# 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: 2.3876453 -0.0097564209 2 0.01254688 -2 0.00038108489 -4 -2.3656347e-05 -6 1.5068491e-06 -8
  - type: tabulated k
    data: |
        0.300 7.6845E-06
        0.310 3.1403E-06
        0.320 1.4314E-06
        0.330 6.8636E-07
        0.340 3.4587E-07
        0.350 1.8719E-07
        0.360 1.0503E-07
        0.370 6.8511E-08
        0.380 5.4927E-08
        0.390 3.1191E-08
        0.400 1.9156E-08
        0.420 1.6753E-08
        0.440 2.1072E-08
        0.460 1.8349E-08
        0.480 1.5310E-08
        0.500 1.5947E-08
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.5541E-08
        0.700 1.1152E-08
        0.800 1.2745E-08
        0.900 2.1518E-08
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 3.255e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.556711
    Vd: 58.689461
    glass_code: 557587
    glass_status: preferred
    density:
      - value: 2920
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.4e-06
      - temperature_range: 293 573
        value: 8.5e-06
    dPgF: -0.0023
    resistance:
        acid: 2.2
        phosphate: 2.0