# 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 0.71411271 0.0133604289 0.713400795 0.0028939123 0.765480668 134.125223
  - type: tabulated k
    data: |
        0.280 4.4291E-06
        0.290 3.5580E-06
        0.300 2.3801E-06
        0.310 1.6037E-06
        0.320 8.6856E-07
        0.330 4.7669E-07
        0.340 2.4627E-07
        0.350 1.3116E-07
        0.360 6.6660E-08
        0.370 3.8528E-08
        0.380 1.8198E-08
        0.390 1.2439E-08
        0.400 1.2758E-08
        0.420 1.3396E-08
        0.440 1.4034E-08
        0.460 1.4672E-08
        0.480 1.5310E-08
        0.500 1.5947E-08
        0.550 1.7542E-08
        0.600 1.9137E-08
        0.650 2.0732E-08
        0.700 2.2326E-08
        0.800 2.5516E-08
        0.850 2.7111E-08
        0.900 2.8705E-08
        0.950 3.0300E-08
        1.000 2.3909E-08
        1.060 1.6887E-08
        1.200 1.9118E-08
        1.400 2.2304E-08
        1.600 2.5490E-08
        1.800 2.8677E-08
        2.000 3.1863E-08
        2.200 5.2600E-08
        2.400 9.5732E-08
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -2.47e-05 -2.21e-09 5.2e-12 4.58e-07 5.69e-10 0.082
    nd: 1.568540
    Vd: 71.235367
    glass_code: 569712
    density:
      - value: 4360
    thermal_expansion:
      - temperature_range: 243 343
        value: 1.33e-05
      - temperature_range: 293 573
        value: 1.58e-05
    dPgF: 0.0199
    resistance:
        climatic: 1.0