# 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/2017/ohara_2017-11-30.agf">OHARA Zemax catalog 2017-11-30</a> (obtained from <a href="http://www.ohara-inc.co.jp/en/product/optical/list/">http://www.ohara-inc.co.jp</a>)<br>See also <a href="https://refractiveindex.info/download/data/2017/ohara_2017-11-30.pdf">OHARA glass data sheets</a>
COMMENTS: |
    
DATA:
  - type: formula 3
    wavelength_range: 0.3 2.4
    coefficients: 2.583052 -0.0098044767 2 0.017999796 -2 0.00062560828 -4 -3.0382771e-05 -6 3.0639765e-06 -8
  - type: tabulated k
    data: |
        0.330 5.7964E-06
        0.340 2.4791E-06
        0.350 1.1998E-06
        0.360 6.3926E-07
        0.370 3.7639E-07
        0.380 2.1620E-07
        0.390 1.4290E-07
        0.400 8.7125E-08
        0.420 4.7122E-08
        0.440 3.5190E-08
        0.460 2.5714E-08
        0.480 1.9146E-08
        0.500 1.5947E-08
        0.550 1.3150E-08
        0.600 1.4345E-08
        0.650 2.0732E-08
        0.700 1.6736E-08
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 7.771e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.623740
    Vd: 47.097220
    glass_code: 624471
    glass_status: preferred
    density:
      - value: 3620
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.3e-06
      - temperature_range: 293 573
        value: 7.4e-06
    dPgF: -0.0019
    resistance:
        acid: 52.2
        phosphate: 2.2