# 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 1.91811619 0.0102147684 0.253724399 0.0433176011 1.39473885 101.938021
  - type: tabulated k
    data: |
        0.340 7.6121E-06
        0.350 2.6949E-06
        0.360 1.2341E-06
        0.370 6.5702E-07
        0.380 3.8656E-07
        0.390 2.4196E-07
        0.400 1.7334E-07
        0.420 1.0525E-07
        0.440 7.4313E-08
        0.460 5.5324E-08
        0.480 4.2250E-08
        0.500 2.7950E-08
        0.550 1.7542E-08
        0.600 1.9137E-08
        0.650 1.5541E-08
        0.700 1.1152E-08
        0.800 1.2745E-08
        0.900 7.1656E-09
        1.000 7.9617E-09
        1.200 9.5541E-09
        1.400 3.3473E-08
        1.600 5.1032E-08
        1.800 1.5844E-07
        2.000 5.0119E-07
        2.200 1.5552E-06
        2.400 6.2740E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 5.52e-06 1.63e-08 2.71e-12 8.93e-07 5.67e-10 0.188
    nd: 1.806098
    Vd: 40.925996
    glass_code: 806409
    density:
      - value: 4430
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.9e-06
      - temperature_range: 293 573
        value: 7e-06
    dPgF: -0.0052
    resistance:
        climatic: 1.0
        acid: 4.2
        phosphate: 2.0