# 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: |
    Recommended 
DATA:
  - type: formula 2
    wavelength_range: 0.34 2.4
    coefficients: 0 1.64258713 0.0086824602 0.23963461 0.0351226242 1.22483026 116.604369
  - type: tabulated k
    data: |
        0.340 6.2300E-06
        0.350 2.4833E-06
        0.360 1.0630E-06
        0.370 5.4862E-07
        0.380 2.6532E-07
        0.390 1.5592E-07
        0.400 1.0352E-07
        0.420 6.0709E-08
        0.440 4.5817E-08
        0.460 3.6790E-08
        0.480 2.6832E-08
        0.500 1.9944E-08
        0.550 1.3150E-08
        0.600 1.9137E-08
        0.650 2.0732E-08
        0.700 1.6736E-08
        0.800 6.3694E-09
        0.900 2.1518E-08
        1.000 2.3909E-08
        1.200 3.8274E-08
        1.400 6.7046E-08
        1.600 1.0227E-07
        1.800 2.4560E-07
        2.000 5.5054E-07
        2.200 1.4598E-06
        2.400 4.9917E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -4.66e-06 9.34e-09 -3.89e-11 4.57e-07 5.81e-10 0.266
    nd: 1.717004
    Vd: 47.927969
    glass_code: 717479
    density:
      - value: 4250
    thermal_expansion:
      - temperature_range: 243 343
        value: 8e-06
      - temperature_range: 293 573
        value: 9.4e-06
    dPgF: -0.0034
    resistance:
        climatic: 2.0
        acid: 53.2
        phosphate: 4.2