# 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: 2.7229077 -0.0099369888 2 0.02092378 -2 0.00065136672 -4 -1.9388233e-05 -6 3.1119561e-06 -8
  - type: tabulated k
    data: |
        0.350 6.1477E-06
        0.360 2.6250E-06
        0.370 1.2684E-06
        0.380 6.3721E-07
        0.390 3.6167E-07
        0.400 2.1734E-07
        0.420 1.0180E-07
        0.440 6.7167E-08
        0.460 5.1610E-08
        0.480 3.8389E-08
        0.500 2.3945E-08
        0.550 1.7542E-08
        0.600 1.9137E-08
        0.650 2.5928E-08
        0.700 2.2326E-08
        0.800 1.9127E-08
        0.900 2.8705E-08
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 2.589e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.668921
    Vd: 44.987354
    glass_code: 669450
    glass_status: preferred
    density:
      - value: 4000
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.6e-06
      - temperature_range: 293 573
        value: 8.8e-06
    dPgF: 0.0005
    resistance:
        acid: 53.2
        phosphate: 3.2