# this file is part of refractiveindex.info database
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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: 0.313 2.325
    coefficients: 0 0.053461546 0.0456429986 1.5837823 0.00912260162 0.918196297 89.3234474
  - type: tabulated k
    data: |
        0.330 8.9581E-06
        0.340 3.7508E-06
        0.350 1.5172E-06
        0.360 6.7529E-07
        0.370 3.2334E-07
        0.380 1.7107E-07
        0.390 1.0736E-07
        0.400 6.7557E-08
        0.420 3.6968E-08
        0.440 3.5190E-08
        0.460 2.9402E-08
        0.480 2.2987E-08
        0.500 1.9944E-08
        0.550 1.7542E-08
        0.600 2.3933E-08
        0.650 2.0732E-08
        0.700 2.2326E-08
        0.800 1.9127E-08
        0.850 1.3542E-08
        0.900 1.4338E-08
        0.950 2.2714E-08
        1.000 2.3909E-08
        1.060 2.5344E-08
        1.200 2.8691E-08
        1.400 1.3450E-07
        1.600 1.1511E-07
        1.800 3.0401E-07
        2.000 6.6629E-07
        2.200 2.1982E-06
        2.400 5.1161E-06
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -1.64e-06 1.58e-08 -3.17e-11 4.74e-07 3.85e-10 0.203
    nd: 1.638540
    Vd: 55.446553
    glass_code: 639555
    glass_status: standard
    density:
      - value: 3690
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.9e-06
      - temperature_range: 293 573
        value: 8.2e-06
    dPgF: -0.0013
    resistance:
        climatic: 3.0