{
  "source": {
    "repository": "https://github.com/polyanskiy/refractiveindex.info-database",
    "commit": "c5c2f188e848453def5970e347399d653df2ffc2",
    "path": "database/data/specs/schott/optical"
  },
  "glasses": [
    {
      "glass": "BAFN6",
      "wavelength_range_um": [
        "0.35",
        "2.325"
      ],
      "coefficients": [
        "1.36719201",
        "0.00882820704",
        "0.10907994",
        "0.0438731646",
        "1.02108011",
        "113.58602"
      ],
      "nd": "1.589",
      "status": "special"
    },
    {
      "glass": "BK7G18",
      "wavelength_range_um": [
        "0.38",
        "2.5"
      ],
      "coefficients": [
        "1.26538542",
        "0.00813104078",
        "0.0144191073",
        "0.0543303226",
        "1.00323028",
        "102.821166"
      ],
      "nd": "1.51975",
      "status": "special"
    },
    {
      "glass": "F2",
      "wavelength_range_um": [
        "0.32",
        "2.5"
      ],
      "coefficients": [
        "1.34533359",
        "0.00997743871",
        "0.209073176",
        "0.0470450767",
        "0.937357162",
        "111.886764"
      ],
      "nd": "1.62004",
      "status": "standard"
    },
    {
      "glass": "F2G12",
      "wavelength_range_um": [
        "0.39",
        "2.5"
      ],
      "coefficients": [
        "1.34702224",
        "0.00980850553",
        "0.210037763",
        "0.0471788018",
        "19.5350768",
        "2279.1547"
      ],
      "nd": "1.62072",
      "status": "special"
    },
    {
      "glass": "F2HT",
      "wavelength_range_um": [
        "0.32",
        "2.5"
      ],
      "coefficients": [
        "1.34533359",
        "0.00997743871",
        "0.209073176",
        "0.0470450767",
        "0.937357162",
        "111.886764"
      ],
      "nd": "1.62004",
      "status": "standard"
    },
    {
      "glass": "F5",
      "wavelength_range_um": [
        "0.32",
        "2.5"
      ],
      "coefficients": [
        "1.3104463",
        "0.00958633048",
        "0.19603426",
        "0.0457627627",
        "0.96612977",
        "115.011883"
      ],
      "nd": "1.60342",
      "status": "standard"
    },
    {
      "glass": "FK3",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "0.973346627",
        "0.00640795469",
        "0.146642231",
        "0.020565293",
        "0.679304225",
        "80.4965389"
      ],
      "nd": "1.4645",
      "status": "special"
    },
    {
      "glass": "FK5HTi",
      "wavelength_range_um": [
        "0.25",
        "2.5"
      ],
      "coefficients": [
        "0.90936218",
        "0.0052014247",
        "0.279077054",
        "0.0158938446",
        "0.891813298",
        "95.9109448"
      ],
      "nd": "1.48748",
      "status": "standard"
    },
    {
      "glass": "K10",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "1.15687082",
        "0.00809424251",
        "0.0642625444",
        "0.0386051284",
        "0.872376139",
        "104.74773"
      ],
      "nd": "1.50137",
      "status": "standard"
    },
    {
      "glass": "K5G20",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.14094396",
        "0.00694945478",
        "0.14500119",
        "0.0310574444",
        "37.4705786",
        "4536.25624"
      ],
      "nd": "1.52344",
      "status": "special"
    },
    {
      "glass": "K7",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.1273555",
        "0.00720341707",
        "0.124412303",
        "0.0269835916",
        "0.827100531",
        "100.384588"
      ],
      "nd": "1.51112",
      "status": "standard"
    },
    {
      "glass": "KZFS12",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.55624873",
        "0.0102012744",
        "0.239769276",
        "0.0469277969",
        "0.947887658",
        "69.8370722"
      ],
      "nd": "1.696",
      "status": "special"
    },
    {
      "glass": "KZFSN4",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.37994218",
        "0.00891159699",
        "0.168496708",
        "0.040533407",
        "0.874885726",
        "69.6628237"
      ],
      "nd": "1.6134",
      "status": "preferred"
    },
    {
      "glass": "LAFN7",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.66842615",
        "0.0103159999",
        "0.298512803",
        "0.0469216348",
        "1.0774376",
        "82.5078509"
      ],
      "nd": "1.7495",
      "status": "standard"
    },
    {
      "glass": "LAK9G15",
      "wavelength_range_um": [
        "0.38",
        "2.5"
      ],
      "coefficients": [
        "1.28773667",
        "0.0055754192",
        "0.518244853",
        "0.0223679524",
        "26.1756109",
        "1892.2533"
      ],
      "nd": "1.69064",
      "status": "special"
    },
    {
      "glass": "LAKL12",
      "wavelength_range_um": [
        "0.32",
        "2.5"
      ],
      "coefficients": [
        "1.28115389",
        "0.00636439821",
        "0.482607607",
        "0.0213764262",
        "1.16553538",
        "93.2771532"
      ],
      "nd": "1.6779",
      "status": "preferred"
    },
    {
      "glass": "LASF35",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "2.45505861",
        "0.0135670404",
        "0.453006077",
        "0.054580302",
        "2.3851308",
        "167.904715"
      ],
      "nd": "2.02204",
      "status": "standard"
    },
    {
      "glass": "LASFN9",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "1.97888194",
        "0.0118537266",
        "0.320435298",
        "0.052738177",
        "1.92900751",
        "166.25654"
      ],
      "nd": "1.85025",
      "status": "preferred"
    },
    {
      "glass": "LF5",
      "wavelength_range_um": [
        "0.32",
        "2.325"
      ],
      "coefficients": [
        "1.28035628",
        "0.00929854416",
        "0.163505973",
        "0.0449135769",
        "0.893930112",
        "110.493685"
      ],
      "nd": "1.58144",
      "status": "standard"
    },
    {
      "glass": "LF5G15",
      "wavelength_range_um": [
        "0.38",
        "2.5"
      ],
      "coefficients": [
        "1.28887331",
        "0.0092001566",
        "0.162818811",
        "0.0456954308",
        "10.5579792",
        "1275.44015"
      ],
      "nd": "1.58397",
      "status": "special"
    },
    {
      "glass": "LF5G19",
      "wavelength_range_um": [
        "0.4",
        "2.5"
      ],
      "coefficients": [
        "1.34611327",
        "0.0097174385",
        "0.142428018",
        "0.0501911619",
        "0.900477176",
        "111.959703"
      ],
      "nd": "1.59655",
      "status": "special"
    },
    {
      "glass": "LF5HTi",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.28552924",
        "0.0093988626",
        "0.158357622",
        "0.0452566659",
        "0.892175122",
        "110.544829"
      ],
      "nd": "1.58144",
      "status": "standard"
    },
    {
      "glass": "LLF1",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.21640125",
        "0.00857807248",
        "0.13366454",
        "0.0420143003",
        "0.883399468",
        "107.59306"
      ],
      "nd": "1.54814",
      "status": "standard"
    },
    {
      "glass": "LLF1HTi",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "1.22510445",
        "0.00870432098",
        "0.125155671",
        "0.0427325235",
        "0.892236751",
        "108.049968"
      ],
      "nd": "1.54815",
      "status": "standard"
    },
    {
      "glass": "N-BAF10",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.5851495",
        "0.00926681282",
        "0.143559385",
        "0.0424489805",
        "1.08521269",
        "105.613573"
      ],
      "nd": "1.67003",
      "status": "standard"
    },
    {
      "glass": "N-BAF3",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "1.34859634",
        "0.00871492932",
        "0.10764424",
        "0.0478406436",
        "1.13207084",
        "112.936116"
      ],
      "nd": "1.58272",
      "status": "special"
    },
    {
      "glass": "N-BAF4",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "1.42056328",
        "0.00942015382",
        "0.102721269",
        "0.0531087291",
        "1.14380976",
        "110.278856"
      ],
      "nd": "1.60568",
      "status": "standard"
    },
    {
      "glass": "N-BAF51",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.51503623",
        "0.00942734715",
        "0.153621958",
        "0.04308265",
        "1.15427909",
        "124.889868"
      ],
      "nd": "1.65224",
      "status": "standard"
    },
    {
      "glass": "N-BAF52",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "1.43903433",
        "0.00907800128",
        "0.0967046052",
        "0.050821208",
        "1.09875818",
        "105.691856"
      ],
      "nd": "1.60863",
      "status": "standard"
    },
    {
      "glass": "N-BAK1",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "1.12365662",
        "0.00644742752",
        "0.309276848",
        "0.0222284402",
        "0.881511957",
        "107.297751"
      ],
      "nd": "1.5725",
      "status": "standard"
    },
    {
      "glass": "N-BAK2",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "1.01662154",
        "0.00592383763",
        "0.319903051",
        "0.0203828415",
        "0.937232995",
        "113.118417"
      ],
      "nd": "1.53996",
      "status": "standard"
    },
    {
      "glass": "N-BAK4",
      "wavelength_range_um": [
        "0.334",
        "2.5"
      ],
      "coefficients": [
        "1.28834642",
        "0.00779980626",
        "0.132817724",
        "0.0315631177",
        "0.945395373",
        "105.965875"
      ],
      "nd": "1.56883",
      "status": "standard"
    },
    {
      "glass": "N-BAK4HT",
      "wavelength_range_um": [
        "0.334",
        "2.5"
      ],
      "coefficients": [
        "1.28834642",
        "0.00779980626",
        "0.132817724",
        "0.0315631177",
        "0.945395373",
        "105.965875"
      ],
      "nd": "1.56883",
      "status": "standard"
    },
    {
      "glass": "N-BALF4",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.31004128",
        "0.0079659645",
        "0.142038259",
        "0.0330672072",
        "0.964929351",
        "109.19732"
      ],
      "nd": "1.57956",
      "status": "standard"
    },
    {
      "glass": "N-BALF5",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.28385965",
        "0.00825815975",
        "0.0719300942",
        "0.0441920027",
        "1.05048927",
        "107.097324"
      ],
      "nd": "1.54739",
      "status": "standard"
    },
    {
      "glass": "N-BASF2",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.53652081",
        "0.0108435729",
        "0.156971102",
        "0.0562278762",
        "1.30196815",
        "131.3397"
      ],
      "nd": "1.66446",
      "status": "standard"
    },
    {
      "glass": "N-BASF64",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "1.65554268",
        "0.0104485644",
        "0.17131977",
        "0.0499394756",
        "1.33664448",
        "118.961472"
      ],
      "nd": "1.704",
      "status": "standard"
    },
    {
      "glass": "N-BK10",
      "wavelength_range_um": [
        "0.29",
        "2.5"
      ],
      "coefficients": [
        "0.888308131",
        "0.00516900822",
        "0.328964475",
        "0.0161190045",
        "0.984610769",
        "99.7575331"
      ],
      "nd": "1.49782",
      "status": "standard"
    },
    {
      "glass": "N-BK7",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "1.03961212",
        "0.00600069867",
        "0.231792344",
        "0.0200179144",
        "1.01046945",
        "103.560653"
      ],
      "nd": "1.5168",
      "status": "standard"
    },
    {
      "glass": "N-BK7HT",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "1.03961212",
        "0.00600069867",
        "0.231792344",
        "0.0200179144",
        "1.01046945",
        "103.560653"
      ],
      "nd": "1.5168",
      "status": "standard"
    },
    {
      "glass": "N-BK7HTi",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "1.03961212",
        "0.00600069867",
        "0.231792344",
        "0.0200179144",
        "1.01046945",
        "103.560653"
      ],
      "nd": "1.5168",
      "status": "standard"
    },
    {
      "glass": "N-F2",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "1.39757037",
        "0.00995906143",
        "0.159201403",
        "0.0546931752",
        "1.2686543",
        "119.248346"
      ],
      "nd": "1.62005",
      "status": "standard"
    },
    {
      "glass": "N-FK5",
      "wavelength_range_um": [
        "0.26",
        "2.5"
      ],
      "coefficients": [
        "0.844309338",
        "0.00475111955",
        "0.344147824",
        "0.0149814849",
        "0.910790213",
        "97.8600293"
      ],
      "nd": "1.48749",
      "status": "standard"
    },
    {
      "glass": "N-FK51",
      "wavelength_range_um": [
        "0.29",
        "2.5"
      ],
      "coefficients": [
        "0.971247817",
        "0.00472301995",
        "0.216901417",
        "0.0153575612",
        "0.904651666",
        "168.68133"
      ],
      "nd": "1.48656",
      "status": "preferred"
    },
    {
      "glass": "N-FK51A",
      "wavelength_range_um": [
        "0.29",
        "2.5"
      ],
      "coefficients": [
        "0.971247817",
        "0.00472301995",
        "0.216901417",
        "0.0153575612",
        "0.904651666",
        "168.68133"
      ],
      "nd": "1.48656",
      "status": "standard"
    },
    {
      "glass": "N-FK58",
      "wavelength_range_um": [
        "0.26",
        "2.5"
      ],
      "coefficients": [
        "0.738042712",
        "0.00339065607",
        "0.363371967",
        "0.0117551189",
        "0.989296264",
        "212.842145"
      ],
      "nd": "1.456",
      "status": "standard"
    },
    {
      "glass": "N-K5",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.08511833",
        "0.00661099503",
        "0.199562005",
        "0.024110866",
        "0.930511663",
        "111.982777"
      ],
      "nd": "1.52249",
      "status": "standard"
    },
    {
      "glass": "N-KF9",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.19286778",
        "0.00839154696",
        "0.0893346571",
        "0.0404010786",
        "0.920819805",
        "112.572446"
      ],
      "nd": "1.52346",
      "status": "standard"
    },
    {
      "glass": "N-KZFS11",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.3322245",
        "0.0084029848",
        "0.28924161",
        "0.034423972",
        "1.15161734",
        "88.4310532"
      ],
      "nd": "1.63775",
      "status": "standard"
    },
    {
      "glass": "N-KZFS2",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.23697554",
        "0.00747170505",
        "0.153569376",
        "0.0308053556",
        "0.903976272",
        "70.1731084"
      ],
      "nd": "1.55836",
      "status": "standard"
    },
    {
      "glass": "N-KZFS4",
      "wavelength_range_um": [
        "0.334",
        "2.5"
      ],
      "coefficients": [
        "1.35055424",
        "0.0087628207",
        "0.197575506",
        "0.0371767201",
        "1.09962992",
        "90.3866994"
      ],
      "nd": "1.61336",
      "status": "standard"
    },
    {
      "glass": "N-KZFS4HT",
      "wavelength_range_um": [
        "0.32",
        "2.5"
      ],
      "coefficients": [
        "1.35055424",
        "0.0087628207",
        "0.197575506",
        "0.0371767201",
        "1.09962992",
        "90.3866994"
      ],
      "nd": "1.61336",
      "status": "standard"
    },
    {
      "glass": "N-KZFS5",
      "wavelength_range_um": [
        "0.334",
        "2.5"
      ],
      "coefficients": [
        "1.47460789",
        "0.00986143816",
        "0.193584488",
        "0.0445477583",
        "1.26589974",
        "106.436258"
      ],
      "nd": "1.65412",
      "status": "standard"
    },
    {
      "glass": "N-KZFS8",
      "wavelength_range_um": [
        "0.334",
        "2.5"
      ],
      "coefficients": [
        "1.62693651",
        "0.010880863",
        "0.24369876",
        "0.0494207753",
        "1.62007141",
        "131.009163"
      ],
      "nd": "1.72047",
      "status": "standard"
    },
    {
      "glass": "N-LAF2",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.80984227",
        "0.0101711622",
        "0.15729555",
        "0.0442431765",
        "1.0930037",
        "100.687748"
      ],
      "nd": "1.74397",
      "status": "standard"
    },
    {
      "glass": "N-LAF21",
      "wavelength_range_um": [
        "0.334",
        "2.5"
      ],
      "coefficients": [
        "1.87134529",
        "0.0093332228",
        "0.25078301",
        "0.0345637762",
        "1.22048639",
        "83.2404866"
      ],
      "nd": "1.788",
      "status": "standard"
    },
    {
      "glass": "N-LAF3",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.73155854",
        "0.00953833914",
        "0.150874455",
        "0.0407887211",
        "1.06586596",
        "98.0758545"
      ],
      "nd": "1.717",
      "status": "special"
    },
    {
      "glass": "N-LAF32",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.91731106",
        "0.00978600358",
        "0.224019825",
        "0.0386141473",
        "1.22087075",
        "84.6431265"
      ],
      "nd": "1.79457E+00",
      "status": "preferred"
    },
    {
      "glass": "N-LAF33",
      "wavelength_range_um": [
        "0.32",
        "2.5"
      ],
      "coefficients": [
        "1.79653417",
        "0.00927313493",
        "0.311577903",
        "0.0358201181",
        "1.15981863",
        "87.3448712"
      ],
      "nd": "1.78582",
      "status": "standard"
    },
    {
      "glass": "N-LAF34",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.75836958",
        "0.00872810026",
        "0.313537785",
        "0.0293020832",
        "1.18925231",
        "85.1780644"
      ],
      "nd": "1.7725",
      "status": "standard"
    },
    {
      "glass": "N-LAF35",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.51697436",
        "0.00750943203",
        "0.455875464",
        "0.0260046715",
        "1.07469242",
        "80.5945159"
      ],
      "nd": "1.7433",
      "status": "standard"
    },
    {
      "glass": "N-LAF36",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.85744228",
        "0.00982397191",
        "0.294098729",
        "0.0384309138",
        "1.16615417",
        "89.3984634"
      ],
      "nd": "1.79952",
      "status": "special"
    },
    {
      "glass": "N-LAF7",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "1.74028764",
        "0.010792558",
        "0.226710554",
        "0.0538626639",
        "1.32525548",
        "106.268665"
      ],
      "nd": "1.7495",
      "status": "standard"
    },
    {
      "glass": "N-LAK10",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.72878017",
        "0.00886014635",
        "0.169257825",
        "0.0363416509",
        "1.19386956",
        "82.9009069"
      ],
      "nd": "1.72003",
      "status": "standard"
    },
    {
      "glass": "N-LAK12",
      "wavelength_range_um": [
        "0.32",
        "2.5"
      ],
      "coefficients": [
        "1.17365704",
        "0.00577031797",
        "0.588992398",
        "0.0200401678",
        "0.978014394",
        "95.4873482"
      ],
      "nd": "1.6779",
      "status": "standard"
    },
    {
      "glass": "N-LAK14",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.50781212",
        "0.00746098727",
        "0.318866829",
        "0.0242024834",
        "1.14287213",
        "80.9565165"
      ],
      "nd": "1.6968",
      "status": "standard"
    },
    {
      "glass": "N-LAK21",
      "wavelength_range_um": [
        "0.32",
        "2.5"
      ],
      "coefficients": [
        "1.22718116",
        "0.00602075682",
        "0.420783743",
        "0.0196862889",
        "1.01284843",
        "88.4370099"
      ],
      "nd": "1.64049",
      "status": "standard"
    },
    {
      "glass": "N-LAK22",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.14229781",
        "0.00585778594",
        "0.535138441",
        "0.0198546147",
        "1.04088385",
        "100.834017"
      ],
      "nd": "1.65113",
      "status": "standard"
    },
    {
      "glass": "N-LAK33A",
      "wavelength_range_um": [
        "0.32",
        "2.5"
      ],
      "coefficients": [
        "1.44116999",
        "0.00680933877",
        "0.571749501",
        "0.0222291824",
        "1.16605226",
        "80.9379555"
      ],
      "nd": "1.75393",
      "status": "special"
    },
    {
      "glass": "N-LAK33B",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "1.42288601",
        "0.00670283452",
        "0.593661336",
        "0.021941621",
        "1.1613526",
        "80.7407701"
      ],
      "nd": "1.755",
      "status": "standard"
    },
    {
      "glass": "N-LAK34",
      "wavelength_range_um": [
        "0.29",
        "2.5"
      ],
      "coefficients": [
        "1.26661442",
        "0.00589278062",
        "0.665919318",
        "0.0197509041",
        "1.1249612",
        "78.8894174"
      ],
      "nd": "1.72916",
      "status": "standard"
    },
    {
      "glass": "N-LAK7",
      "wavelength_range_um": [
        "0.29",
        "2.5"
      ],
      "coefficients": [
        "1.23679889",
        "0.00610105538",
        "0.445051837",
        "0.0201388334",
        "1.01745888",
        "90.638038"
      ],
      "nd": "1.6516",
      "status": "standard"
    },
    {
      "glass": "N-LAK8",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.33183167",
        "0.00620023871",
        "0.546623206",
        "0.0216465439",
        "1.19084015",
        "82.5827736"
      ],
      "nd": "1.713",
      "status": "standard"
    },
    {
      "glass": "N-LAK9",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "1.46231905",
        "0.00724270156",
        "0.344399589",
        "0.0243353131",
        "1.15508372",
        "85.4686868"
      ],
      "nd": "1.691",
      "status": "standard"
    },
    {
      "glass": "N-LASF31",
      "wavelength_range_um": [
        "0.32",
        "2.5"
      ],
      "coefficients": [
        "1.71317198",
        "0.00819172228",
        "0.718575109",
        "0.0297801704",
        "1.7233247",
        "138.461313"
      ],
      "nd": "1.88067E+00",
      "status": "preferred"
    },
    {
      "glass": "N-LASF31A",
      "wavelength_range_um": [
        "0.25",
        "2.5"
      ],
      "coefficients": [
        "1.96485075",
        "0.00982060155",
        "0.475231259",
        "0.0344713438",
        "1.48360109",
        "110.739863"
      ],
      "nd": "1.883",
      "status": "standard"
    },
    {
      "glass": "N-LASF40",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "1.98550331",
        "0.010958331",
        "0.274057042",
        "0.0474551603",
        "1.28945661",
        "96.9085286"
      ],
      "nd": "1.83404",
      "status": "standard"
    },
    {
      "glass": "N-LASF41",
      "wavelength_range_um": [
        "0.334",
        "2.5"
      ],
      "coefficients": [
        "1.86348331",
        "0.00910368219",
        "0.413307255",
        "0.0339247268",
        "1.35784815",
        "93.3580595"
      ],
      "nd": "1.83501",
      "status": "standard"
    },
    {
      "glass": "N-LASF43",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.93502827",
        "0.0104001413",
        "0.23662935",
        "0.0447505292",
        "1.26291344",
        "87.437569"
      ],
      "nd": "1.8061",
      "status": "standard"
    },
    {
      "glass": "N-LASF44",
      "wavelength_range_um": [
        "0.334",
        "2.5"
      ],
      "coefficients": [
        "1.78897105",
        "0.00872506277",
        "0.38675867",
        "0.0308085023",
        "1.30506243",
        "92.7743824"
      ],
      "nd": "1.8042",
      "status": "standard"
    },
    {
      "glass": "N-LASF45",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "1.87140198",
        "0.011217192",
        "0.267777879",
        "0.0505134972",
        "1.73030008",
        "147.106505"
      ],
      "nd": "1.80107",
      "status": "standard"
    },
    {
      "glass": "N-LASF45HT",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "1.87140198",
        "0.011217192",
        "0.267777879",
        "0.0505134972",
        "1.73030008",
        "147.106505"
      ],
      "nd": "1.80107",
      "status": "standard"
    },
    {
      "glass": "N-LASF46",
      "wavelength_range_um": [
        "0.38",
        "2.5"
      ],
      "coefficients": [
        "2.18073678",
        "0.0125642118",
        "0.298978656",
        "0.056469999",
        "1.62190046",
        "105.662819"
      ],
      "nd": "1.90138E+00",
      "status": "preferred"
    },
    {
      "glass": "N-LASF46A",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "2.16701566",
        "0.0123595524",
        "0.319812761",
        "0.0560610282",
        "1.66004486",
        "107.047718"
      ],
      "nd": "1.90366",
      "status": "standard"
    },
    {
      "glass": "N-LASF46B",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "2.17988922",
        "0.0125805384",
        "0.306495184",
        "0.0567191367",
        "1.56882437",
        "105.316538"
      ],
      "nd": "1.90366",
      "status": "standard"
    },
    {
      "glass": "N-LASF9",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "2.00029547",
        "0.0121426017",
        "0.298926886",
        "0.0538736236",
        "1.80691843",
        "156.530829"
      ],
      "nd": "1.85025",
      "status": "standard"
    },
    {
      "glass": "N-LASF9HT",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "2.00029547",
        "0.0121426017",
        "0.298926886",
        "0.0538736236",
        "1.80691843",
        "156.530829"
      ],
      "nd": "1.85025",
      "status": "standard"
    },
    {
      "glass": "N-PK51",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "1.15610775",
        "0.00585597402",
        "0.153229344",
        "0.0194072416",
        "0.785618966",
        "140.537046"
      ],
      "nd": "1.52855",
      "status": "standard"
    },
    {
      "glass": "N-PK52A",
      "wavelength_range_um": [
        "0.29",
        "2.5"
      ],
      "coefficients": [
        "1.029607",
        "0.00516800155",
        "0.1880506",
        "0.0166658798",
        "0.736488165",
        "138.964129"
      ],
      "nd": "1.497",
      "status": "standard"
    },
    {
      "glass": "N-PSK3",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "0.88727211",
        "0.00469824067",
        "0.489592425",
        "0.0161818463",
        "1.04865296",
        "104.374975"
      ],
      "nd": "1.55232",
      "status": "standard"
    },
    {
      "glass": "N-PSK53",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.3434087",
        "0.00675074317",
        "0.241417935",
        "0.0219910513",
        "0.952896897",
        "103.551457"
      ],
      "nd": "1.62014",
      "status": "special"
    },
    {
      "glass": "N-PSK53A",
      "wavelength_range_um": [
        "0.32",
        "2.5"
      ],
      "coefficients": [
        "1.38121836",
        "0.00706416337",
        "0.196745645",
        "0.0233251345",
        "0.886089205",
        "97.4847345"
      ],
      "nd": "1.618",
      "status": "standard"
    },
    {
      "glass": "N-SF1",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.60865158",
        "0.0119654879",
        "0.237725916",
        "0.0590589722",
        "1.51530653",
        "135.521676"
      ],
      "nd": "1.71736",
      "status": "standard"
    },
    {
      "glass": "N-SF10",
      "wavelength_range_um": [
        "0.38",
        "2.5"
      ],
      "coefficients": [
        "1.62153902",
        "0.0122241457",
        "0.256287842",
        "0.0595736775",
        "1.64447552",
        "147.468793"
      ],
      "nd": "1.72828",
      "status": "standard"
    },
    {
      "glass": "N-SF11",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.73759695",
        "0.013188707",
        "0.313747346",
        "0.0623068142",
        "1.89878101",
        "155.23629"
      ],
      "nd": "1.78472",
      "status": "standard"
    },
    {
      "glass": "N-SF14",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "1.69022361",
        "0.0130512113",
        "0.288870052",
        "0.061369188",
        "1.7045187",
        "149.517689"
      ],
      "nd": "1.76182",
      "status": "standard"
    },
    {
      "glass": "N-SF15",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.57055634",
        "0.0116507014",
        "0.218987094",
        "0.0597856897",
        "1.50824017",
        "132.709339"
      ],
      "nd": "1.69892",
      "status": "standard"
    },
    {
      "glass": "N-SF19",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.52005444",
        "0.01096144",
        "0.17573947",
        "0.0593248486",
        "1.43623424",
        "126.795151"
      ],
      "nd": "1.66679",
      "status": "special"
    },
    {
      "glass": "N-SF2",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "1.47343127",
        "0.0109019098",
        "0.163681849",
        "0.0585683687",
        "1.36920899",
        "127.404933"
      ],
      "nd": "1.64769",
      "status": "standard"
    },
    {
      "glass": "N-SF4",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "1.67780282",
        "0.012679345",
        "0.282849893",
        "0.0602038419",
        "1.63539276",
        "145.760496"
      ],
      "nd": "1.75513",
      "status": "standard"
    },
    {
      "glass": "N-SF5",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.52481889",
        "0.011254756",
        "0.187085527",
        "0.0588995392",
        "1.42729015",
        "129.141675"
      ],
      "nd": "1.67271",
      "status": "standard"
    },
    {
      "glass": "N-SF56",
      "wavelength_range_um": [
        "0.38",
        "2.5"
      ],
      "coefficients": [
        "1.73562085",
        "0.0129624742",
        "0.317487012",
        "0.0612884288",
        "1.95398203",
        "161.559441"
      ],
      "nd": "1.7847",
      "status": "special"
    },
    {
      "glass": "N-SF57",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.87543831",
        "0.0141749518",
        "0.37375749",
        "0.0640509927",
        "2.30001797",
        "177.389795"
      ],
      "nd": "1.84666",
      "status": "standard"
    },
    {
      "glass": "N-SF57HT",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.87543831",
        "0.0141749518",
        "0.37375749",
        "0.0640509927",
        "2.30001797",
        "177.389795"
      ],
      "nd": "1.84666",
      "status": "standard"
    },
    {
      "glass": "N-SF57HTultra",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.87543831",
        "0.0141749518",
        "0.37375749",
        "0.0640509927",
        "2.30001797",
        "177.389795"
      ],
      "nd": "1.84666",
      "status": "standard"
    },
    {
      "glass": "N-SF6",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.77931763",
        "0.0133714182",
        "0.338149866",
        "0.0617533621",
        "2.08734474",
        "174.01759"
      ],
      "nd": "1.80518",
      "status": "standard"
    },
    {
      "glass": "N-SF64",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.59163762",
        "0.0118623434",
        "0.219908428",
        "0.0594585499",
        "1.46929315",
        "133.310762"
      ],
      "nd": "1.70591",
      "status": "special"
    },
    {
      "glass": "N-SF66",
      "wavelength_range_um": [
        "0.39",
        "2.5"
      ],
      "coefficients": [
        "2.0245976",
        "0.0147053225",
        "0.470187196",
        "0.0692998276",
        "2.59970433",
        "161.817601"
      ],
      "nd": "1.92286",
      "status": "standard"
    },
    {
      "glass": "N-SF6HT",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.77931763",
        "0.0133714182",
        "0.338149866",
        "0.0617533621",
        "2.08734474",
        "174.01759"
      ],
      "nd": "1.80518",
      "status": "standard"
    },
    {
      "glass": "N-SF6HTultra",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.77931763",
        "0.0133714182",
        "0.338149866",
        "0.0617533621",
        "2.08734474",
        "174.01759"
      ],
      "nd": "1.80518",
      "status": "standard"
    },
    {
      "glass": "N-SF8",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.55075812",
        "0.0114338344",
        "0.209816918",
        "0.0582725652",
        "1.46205491",
        "133.24165"
      ],
      "nd": "1.68894",
      "status": "standard"
    },
    {
      "glass": "N-SK10",
      "wavelength_range_um": [
        "0.334",
        "2.5"
      ],
      "coefficients": [
        "1.34972093",
        "0.00736272269",
        "0.238587973",
        "0.0253765327",
        "0.9667336",
        "103.502909"
      ],
      "nd": "1.62278",
      "status": "special"
    },
    {
      "glass": "N-SK11",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "1.17963631",
        "0.00680282081",
        "0.229817295",
        "0.0219737205",
        "0.935789652",
        "101.513232"
      ],
      "nd": "1.56384",
      "status": "standard"
    },
    {
      "glass": "N-SK14",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "0.936155374",
        "0.00461716525",
        "0.594052018",
        "0.016885927",
        "1.04374583",
        "103.736265"
      ],
      "nd": "1.60311",
      "status": "standard"
    },
    {
      "glass": "N-SK15",
      "wavelength_range_um": [
        "0.334",
        "2.5"
      ],
      "coefficients": [
        "1.30417786",
        "0.00695051276",
        "0.28584116",
        "0.0232023703",
        "0.974781572",
        "99.016884"
      ],
      "nd": "1.62296",
      "status": "special"
    },
    {
      "glass": "N-SK16",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.34317774",
        "0.00704687339",
        "0.241144399",
        "0.0229005",
        "0.994317969",
        "92.7508526"
      ],
      "nd": "1.62041",
      "status": "standard"
    },
    {
      "glass": "N-SK2",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.28189012",
        "0.0072719164",
        "0.257738258",
        "0.0242823527",
        "0.96818604",
        "110.377773"
      ],
      "nd": "1.60738",
      "status": "standard"
    },
    {
      "glass": "N-SK2HT",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.28189012",
        "0.0072719164",
        "0.257738258",
        "0.0242823527",
        "0.96818604",
        "110.377773"
      ],
      "nd": "1.60738",
      "status": "standard"
    },
    {
      "glass": "N-SK4",
      "wavelength_range_um": [
        "0.334",
        "2.5"
      ],
      "coefficients": [
        "1.32993741",
        "0.00716874107",
        "0.228542996",
        "0.0246455892",
        "0.988465211",
        "100.886364"
      ],
      "nd": "1.61272",
      "status": "standard"
    },
    {
      "glass": "N-SK5",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "0.991463823",
        "0.00522730467",
        "0.495982121",
        "0.0172733646",
        "0.987393925",
        "98.3594579"
      ],
      "nd": "1.58913",
      "status": "standard"
    },
    {
      "glass": "N-SSK2",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.4306027",
        "0.00823982975",
        "0.153150554",
        "0.0333736841",
        "1.01390904",
        "106.870822"
      ],
      "nd": "1.62229",
      "status": "standard"
    },
    {
      "glass": "N-SSK5",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.59222659",
        "0.00920284626",
        "0.103520774",
        "0.0423530072",
        "1.05174016",
        "106.927374"
      ],
      "nd": "1.65844",
      "status": "standard"
    },
    {
      "glass": "N-SSK8",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.44857867",
        "0.00869310149",
        "0.117965926",
        "0.0421566593",
        "1.06937528",
        "111.300666"
      ],
      "nd": "1.61773",
      "status": "standard"
    },
    {
      "glass": "N-ZK7",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "1.07715032",
        "0.00676601657",
        "0.168079109",
        "0.0230642817",
        "0.851889892",
        "89.0498778"
      ],
      "nd": "1.50847",
      "status": "standard"
    },
    {
      "glass": "N-ZK7A",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "1.07509891",
        "0.00676601657",
        "0.168895044",
        "0.0230642817",
        "0.860503983",
        "89.0498778"
      ],
      "nd": "1.508054",
      "status": "standard"
    },
    {
      "glass": "P-BK7",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.18318503",
        "0.00722141956",
        "0.0871756426",
        "0.0268216805",
        "1.03133701",
        "101.702362"
      ],
      "nd": "1.5164",
      "status": "standard"
    },
    {
      "glass": "P-LAF37",
      "wavelength_range_um": [
        "0.32",
        "2.5"
      ],
      "coefficients": [
        "1.76003244",
        "0.00938006396",
        "0.248286745",
        "0.0360537464",
        "1.15935122",
        "86.4324693"
      ],
      "nd": "1.7555",
      "status": "standard"
    },
    {
      "glass": "P-LAK35",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "1.3932426",
        "0.00715959695",
        "0.418882766",
        "0.0233637446",
        "1.043807",
        "88.3284426"
      ],
      "nd": "1.6935",
      "status": "standard"
    },
    {
      "glass": "P-LASF47",
      "wavelength_range_um": [
        "0.334",
        "2.5"
      ],
      "coefficients": [
        "1.85543101",
        "0.0100328203",
        "0.315854649",
        "0.0387095168",
        "1.28561839",
        "94.5421507"
      ],
      "nd": "1.8061",
      "status": "standard"
    },
    {
      "glass": "P-LASF50",
      "wavelength_range_um": [
        "0.334",
        "2.5"
      ],
      "coefficients": [
        "1.84910553",
        "0.00999234757",
        "0.329828674",
        "0.0387437988",
        "1.30400901",
        "95.8967681"
      ],
      "nd": "1.8086",
      "status": "standard"
    },
    {
      "glass": "P-LASF51",
      "wavelength_range_um": [
        "0.334",
        "2.5"
      ],
      "coefficients": [
        "1.84568806",
        "0.00988495571",
        "0.3390016",
        "0.0378097402",
        "1.32418921",
        "97.841543"
      ],
      "nd": "1.81",
      "status": "standard"
    },
    {
      "glass": "P-PK53",
      "wavelength_range_um": [
        "0.32",
        "2.5"
      ],
      "coefficients": [
        "0.960316767",
        "0.00531032986",
        "0.340437227",
        "0.0175073434",
        "0.777865595",
        "106.87533"
      ],
      "nd": "1.5269",
      "status": "special"
    },
    {
      "glass": "P-SF67",
      "wavelength_range_um": [
        "0.39",
        "2.5"
      ],
      "coefficients": [
        "1.97464225",
        "0.0145772324",
        "0.467095921",
        "0.0669790359",
        "2.43154209",
        "157.444895"
      ],
      "nd": "1.9068",
      "status": "special"
    },
    {
      "glass": "P-SF68",
      "wavelength_range_um": [
        "0.42",
        "2.5"
      ],
      "coefficients": [
        "2.3330067",
        "0.0168838419",
        "0.452961396",
        "0.0716086325",
        "1.25172339",
        "118.707479"
      ],
      "nd": "2.0052",
      "status": "standard"
    },
    {
      "glass": "P-SF69",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "1.62594647",
        "0.0121696677",
        "0.235927609",
        "0.0600710405",
        "1.67434623",
        "145.651908"
      ],
      "nd": "1.7225",
      "status": "standard"
    },
    {
      "glass": "P-SF8",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "1.55370411",
        "0.011658267",
        "0.206332561",
        "0.0582087757",
        "1.39708831",
        "130.748028"
      ],
      "nd": "1.68893",
      "status": "standard"
    },
    {
      "glass": "P-SK57",
      "wavelength_range_um": [
        "0.32",
        "2.5"
      ],
      "coefficients": [
        "1.31053414",
        "0.00740877235",
        "0.169376189",
        "0.0254563489",
        "1.10987714",
        "107.751087"
      ],
      "nd": "1.587",
      "status": "standard"
    },
    {
      "glass": "P-SK57Q1",
      "wavelength_range_um": [
        "0.31",
        "2.5"
      ],
      "coefficients": [
        "1.30536483",
        "0.00736408831",
        "0.171434328",
        "0.0255786047",
        "1.10117219",
        "106.72606"
      ],
      "nd": "1.586",
      "status": "standard"
    },
    {
      "glass": "P-SK58A",
      "wavelength_range_um": [
        "0.32",
        "2.5"
      ],
      "coefficients": [
        "1.3167841",
        "0.00720717498",
        "0.171154756",
        "0.0245659595",
        "1.12501473",
        "102.739728"
      ],
      "nd": "1.58913",
      "status": "standard"
    },
    {
      "glass": "P-SK60",
      "wavelength_range_um": [
        "0.3",
        "2.5"
      ],
      "coefficients": [
        "1.40790442",
        "0.00784382378",
        "0.143381417",
        "0.0287769365",
        "1.16513947",
        "105.373397"
      ],
      "nd": "1.61035",
      "status": "standard"
    },
    {
      "glass": "SF1",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.55912923",
        "0.0121481001",
        "0.284246288",
        "0.0534549042",
        "0.968842926",
        "112.174809"
      ],
      "nd": "1.71736",
      "status": "standard"
    },
    {
      "glass": "SF10",
      "wavelength_range_um": [
        "0.38",
        "2.5"
      ],
      "coefficients": [
        "1.61625977",
        "0.0127534559",
        "0.259229334",
        "0.0581983954",
        "1.07762317",
        "116.60768"
      ],
      "nd": "1.72825",
      "status": "standard"
    },
    {
      "glass": "SF11",
      "wavelength_range_um": [
        "0.39",
        "2.5"
      ],
      "coefficients": [
        "1.73848403",
        "0.0136068604",
        "0.311168974",
        "0.0615960463",
        "1.17490871",
        "121.922711"
      ],
      "nd": "1.78472",
      "status": "standard"
    },
    {
      "glass": "SF14",
      "wavelength_range_um": [
        "0.39",
        "2.5"
      ],
      "coefficients": [
        "1.69182538",
        "0.0133151542",
        "0.285919934",
        "0.0612647445",
        "1.12595145",
        "118.405242"
      ],
      "nd": "1.76182",
      "status": "preferred"
    },
    {
      "glass": "SF15",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.53925927",
        "0.0119307961",
        "0.247620926",
        "0.0556077536",
        "1.03816409",
        "116.416747"
      ],
      "nd": "1.69895",
      "status": "preferred"
    },
    {
      "glass": "SF2",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.40301821",
        "0.0105795466",
        "0.231767504",
        "0.0493226978",
        "0.939056586",
        "112.405955"
      ],
      "nd": "1.64769",
      "status": "standard"
    },
    {
      "glass": "SF4",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "1.61957826",
        "0.0125502104",
        "0.339493189",
        "0.0544559822",
        "1.02566931",
        "117.652222"
      ],
      "nd": "1.7552",
      "status": "standard"
    },
    {
      "glass": "SF5",
      "wavelength_range_um": [
        "0.35",
        "2.5"
      ],
      "coefficients": [
        "1.46141885",
        "0.0111826126",
        "0.247713019",
        "0.0508594669",
        "0.949995832",
        "112.041888"
      ],
      "nd": "1.6727",
      "status": "standard"
    },
    {
      "glass": "SF56A",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.70579259",
        "0.0133874699",
        "0.344223052",
        "0.0579561608",
        "1.09601828",
        "121.616024"
      ],
      "nd": "1.7847",
      "status": "standard"
    },
    {
      "glass": "SF57",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.81651371",
        "0.0143704198",
        "0.428893641",
        "0.0592801172",
        "1.07186278",
        "121.419942"
      ],
      "nd": "1.84666",
      "status": "standard"
    },
    {
      "glass": "SF57HTultra",
      "wavelength_range_um": [
        "0.37",
        "2.5"
      ],
      "coefficients": [
        "1.81651371",
        "0.0143704198",
        "0.428893641",
        "0.0592801172",
        "1.07186278",
        "121.419942"
      ],
      "nd": "1.84666",
      "status": "standard"
    },
    {
      "glass": "SF6",
      "wavelength_range_um": [
        "0.365",
        "2.5"
      ],
      "coefficients": [
        "1.72448482",
        "0.0134871947",
        "0.390104889",
        "0.0569318095",
        "1.04572858",
        "118.557185"
      ],
      "nd": "1.80518",
      "status": "standard"
    },
    {
      "glass": "SF66",
      "wavelength_range_um": [
        "0.39",
        "2.5"
      ],
      "coefficients": [
        "2.07842233",
        "0.0180875134",
        "0.407120032",
        "0.0679493572",
        "1.76711292",
        "215.266127"
      ],
      "nd": "1.92286",
      "status": "preferred"
    },
    {
      "glass": "SF6G05",
      "wavelength_range_um": [
        "0.46",
        "2.5"
      ],
      "coefficients": [
        "1.62113942",
        "0.0113478992",
        "0.506586092",
        "0.0535840223",
        "10.4032298",
        "1118.83658"
      ],
      "nd": "1.80906",
      "status": "special"
    },
    {
      "glass": "SFL57",
      "wavelength_range_um": [
        "0.39",
        "2.5"
      ],
      "coefficients": [
        "1.88742326",
        "0.0145939341",
        "0.360534025",
        "0.0648198946",
        "2.26189313",
        "176.062211"
      ],
      "nd": "1.84666",
      "status": "special"
    },
    {
      "glass": "SFL6",
      "wavelength_range_um": [
        "0.37",
        "2.325"
      ],
      "coefficients": [
        "1.78922056",
        "0.0135163537",
        "0.328427448",
        "0.0622729599",
        "2.01639441",
        "168.014713"
      ],
      "nd": "1.80518",
      "status": "special"
    }
  ]
}
