# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

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>
COMMENTS: |
    anneal rate:25°C/h
DATA:
  - type: formula 2
    wavelength_range: 0.302 2.325
    coefficients: 0 0.60236351 3.07499779e-08 1.15823046 0.0158379352 1.30267215 101.976296
  - type: tabulated k
    data: |
        0.280 6.1600E-06
        0.290 4.4563E-06
        0.300 3.1525E-06
        0.310 2.1636E-06
        0.320 1.4181E-06
        0.330 8.6632E-07
        0.340 5.2377E-07
        0.350 2.9965E-07
        0.360 1.7117E-07
        0.370 9.8803E-08
        0.380 6.1092E-08
        0.390 5.0058E-08
        0.400 3.5208E-08
        0.420 2.3478E-08
        0.440 2.4596E-08
        0.460 1.4672E-08
        0.480 1.1476E-08
        0.500 1.1955E-08
        0.550 1.3150E-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 5.1032E-08
        1.800 1.8743E-07
        2.000 5.1762E-07
        2.200 1.6319E-06
        2.400 6.5142E-06
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 1.76e-06 1.72e-08 -6.77e-11 3.92e-07 6.44e-10 0.23
    nd: 1.676860
    Vd: 54.805426
    glass_code: 677548
    density:
      - value: 3370
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.3e-06
      - temperature_range: 293 573
        value: 9.4e-06
    dPgF: -0.0069
    resistance:
        climatic: 1.0