# 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: |
    Improved Transmittance
DATA:
  - type: formula 3
    wavelength_range: 0.3 2.4
    coefficients: 2.9161406 -0.010147718 2 0.035077729 -2 0.0020869984 -4 -0.00011077712 -6 1.7236453e-05 -8
  - type: tabulated k
    data: |
        0.370 9.4775E-06
        0.380 3.3525E-06
        0.390 1.2896E-06
        0.400 5.1731E-07
        0.420 1.2601E-07
        0.440 6.3599E-08
        0.460 4.4192E-08
        0.480 3.0681E-08
        0.500 2.3945E-08
        0.550 1.3150E-08
        0.600 1.4345E-08
        0.650 2.0732E-08
        0.700 1.6736E-08
        0.800 6.3694E-09
        0.900 7.1656E-09
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 1.094e-05 0.0 0.0 0.0 0.0 0.0
    nd: 1.740769
    Vd: 27.793228
    glass_code: 741278
    glass_status: preferred
    density:
      - value: 4440
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.3e-06
      - temperature_range: 293 573
        value: 8.4e-06
    dPgF: 0.0097
    resistance:
        acid: 1.2
        phosphate: 2.0