# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
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REFERENCES: |
    <a href="https://refractiveindex.info/download/data/2022/CDGM-ZEMAX202206new.AGF">CDGM Zemax catalog 2022-06</a> (obtained from <a href="http://www.cdgmgd.com/go.htm?k=Download&url=downList">http://www.cdgmgd.com</a>)<br>See also <a href="https://refractiveindex.info/download/data/2022/CDGM202206.pdf">CDGM optical glass data sheets</a>
DATA:
  - type: formula 2
    wavelength_range: 0.302 2.325
    coefficients: 0 0.402312889 -0.00267679247 1.24575177 0.013171611 1.28904431 93.3654804
  - type: tabulated k
    data: |
        0.280 1.0261E-05
        0.290 7.4283E-06
        0.300 6.0297E-06
        0.310 4.3712E-06
        0.320 2.9824E-06
        0.330 1.9827E-06
        0.340 1.2501E-06
        0.350 7.6436E-07
        0.360 4.7571E-07
        0.370 2.8416E-07
        0.380 1.7747E-07
        0.390 1.1701E-07
        0.400 8.3855E-08
        0.420 5.3908E-08
        0.440 4.2271E-08
        0.460 3.3094E-08
        0.480 2.2987E-08
        0.500 1.9944E-08
        0.550 1.7542E-08
        0.600 1.4345E-08
        0.650 1.5541E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        0.850 1.3542E-08
        0.900 1.4338E-08
        0.950 1.5135E-08
        1.000 1.5931E-08
        1.060 1.6887E-08
        1.200 1.9118E-08
        1.400 4.4653E-08
        1.600 1.1511E-07
        1.800 2.8938E-07
        2.000 7.9961E-07
        2.200 3.0108E-06
        2.400 1.0404E-05
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 1.06e-06 1.84e-08 -7.4e-11 2.79e-07 6.19e-10 0.275
    nd: 1.640000
    Vd: 60.202769
    glass_code: 640602
    density:
      - value: 2990
    thermal_expansion:
      - temperature_range: 243 343
        value: 6e-06
      - temperature_range: 293 573
        value: 7.8e-06
    dPgF: -0.006
    resistance:
        climatic: 3.0