# 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: 2.2187568 -0.010447185 2 0.0095904498 -2 0.00028540943 -4 -1.9183741e-05 -6 9.7004548e-07 -8
  - type: tabulated k
    data: |
        0.300 2.6467E-06
        0.310 1.3016E-06
        0.320 6.3270E-07
        0.330 3.3570E-07
        0.340 1.6454E-07
        0.350 9.0584E-08
        0.360 4.9120E-08
        0.370 3.5546E-08
        0.380 4.2634E-08
        0.390 1.8677E-08
        0.400 1.5955E-08
        0.420 2.0114E-08
        0.440 1.4034E-08
        0.460 1.0998E-08
        0.480 7.6471E-09
        0.500 7.9657E-09
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 5.5732E-09
        0.800 6.3694E-09
        0.900 7.1656E-09
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 4.431e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.498308
    Vd: 65.026785
    glass_code: 498650
    glass_status: preferred
    density:
      - value: 2360
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.8e-06
      - temperature_range: 293 573
        value: 6.5e-06
    dPgF: -0.004
    resistance:
        acid: 3.0
        phosphate: 2.0