# 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 2
    wavelength_range: 0.3 2.4
    coefficients: 0 1.59323023 0.0103458172 0.277775516 0.0474089271 1.04070526 81.2863792
  - type: tabulated k
    data: |
        0.330 1.2093E-05
        0.340 5.5201E-06
        0.350 3.1736E-06
        0.360 1.9290E-06
        0.370 1.1792E-06
        0.380 7.1281E-07
        0.390 4.3220E-07
        0.400 2.5505E-07
        0.420 1.1216E-07
        0.440 5.6476E-08
        0.460 3.3094E-08
        0.480 1.9146E-08
        0.500 1.1955E-08
        0.550 8.7623E-09
        0.600 1.4345E-08
        0.650 1.5541E-08
        0.700 1.1152E-08
        0.800 1.9127E-08
        0.900 2.1518E-08
        1.000 3.1895E-08
        1.200 3.8274E-08
        1.400 2.7064E-07
        1.600 2.4424E-07
        1.800 4.6586E-07
        2.000 1.1550E-06
        2.200 4.5757E-06
        2.400 1.1418E-05
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 1.003e-05 0.0 0.0 0.0 0.0 0.0
    nd: 1.720467
    Vd: 34.716156
    glass_code: 720347
    glass_status: preferred
    density:
      - value: 4200
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.4e-06
      - temperature_range: 293 573
        value: 6.7e-06
    dPgF: -0.0027
    resistance:
        acid: 53.2
        phosphate: 4.2