# 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: 2.9271459 -0.011970157 2 0.031922538 -2 0.0015457537 -4 -6.3507309e-05 -6 9.6835139e-06 -8
  - type: tabulated k
    data: |
        0.350 7.0347E-06
        0.360 4.2103E-06
        0.370 2.6252E-06
        0.380 1.6472E-06
        0.390 9.7671E-07
        0.400 5.9311E-07
        0.420 2.1036E-07
        0.440 8.5059E-08
        0.460 4.0489E-08
        0.480 2.2987E-08
        0.500 1.5947E-08
        0.550 1.3150E-08
        0.600 1.4345E-08
        0.650 1.0355E-08
        0.700 1.1152E-08
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 1.335e-05 0.0 0.0 0.0 0.0 0.0
    nd: 1.739997
    Vd: 31.710001
    glass_code: 740317
    glass_status: preferred
    density:
      - value: 4480
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.6e-06
      - temperature_range: 293 573
        value: 6.5e-06
    resistance:
        acid: 52.2
        phosphate: 4.2