# 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:4°C/h
DATA:
  - type: formula 2
    wavelength_range: 0.365 2.325
    coefficients: 0 0.638690484 0.0319257637 1.69998504 0.00791790668 1.45547394 112.179157
  - type: tabulated k
    data: |
        0.340 6.4556E-06
        0.350 2.6083E-06
        0.360 1.2078E-06
        0.370 6.4600E-07
        0.380 3.8656E-07
        0.390 2.5204E-07
        0.400 1.8344E-07
        0.420 1.1561E-07
        0.440 9.2241E-08
        0.460 6.2765E-08
        0.480 4.9982E-08
        0.500 3.5972E-08
        0.550 2.1939E-08
        0.600 1.9137E-08
        0.650 2.0732E-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 2.2304E-08
        1.600 2.5490E-08
        1.800 8.6203E-08
        2.000 3.5405E-07
        2.200 9.1643E-07
        2.400 3.8601E-06
CONDITIONS:
    temperature: 293
PROPERTIES:
    nd: 1.854500
    Vd: 40.593546
    glass_code: 855406
    density:
      - value: 5290
    thermal_expansion:
      - temperature_range: 293 573
        value: 8.1e-06
    dPgF: -0.008