# 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=\"http://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=\"http://refractiveindex.info/download/data/2017/ohara_2017-11-30.pdf\">OHARA glass data sheets</a>"
COMMENTS: "Recommended "
DATA:
  - type: formula 2 
    wavelength_range: 0.36 2.4
    coefficients: 0 1.68939052 0.0103598193 0.133081013 0.0533982239 1.41165515 126.515503
  - type: tabulated k
    data: |
        0.360 5.2500E-06
        0.370 2.2231E-06
        0.380 1.0786E-06
        0.390 5.7828E-07
        0.400 3.7094E-07
        0.420 1.5389E-07
        0.440 1.0304E-07
        0.460 7.7690E-08
        0.480 5.7730E-08
        0.500 4.4010E-08
        0.550 2.1939E-08
        0.600 2.8734E-08
        0.650 3.1129E-08
        0.700 2.2326E-08
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 1.5931E-08
        1.200 1.9118E-08
        1.400 7.8260E-08
        1.600 7.6624E-08
        1.800 1.8743E-07
        2.000 4.1928E-07
        2.200 1.4407E-06
        2.400 4.0245E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 2.96e-06 1.33e-08 -3.48e-11 5.66e-07 7.35e-10 0.278
    nd: 1.701536
    Vd: 41.239440
    glass_code: 702412
    density: 3.67 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 6.4e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 7.5e-06 K<sup>-1</sup>
    dPgF: 0.0018
    climatic_resistance: 2.0
    acid_resistance: 4.0
    phosphate_resistance: 1.0
