# 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 - Lightweight "
DATA:
  - type: formula 2 
    wavelength_range: 0.35 2.4
    coefficients: 0 1.37262713 0.0103220068 0.112636276 0.0550195044 1.39786421 147.735609
  - type: tabulated k
    data: |
        0.350 1.0896E-05
        0.360 3.7510E-06
        0.370 1.3140E-06
        0.380 5.2723E-07
        0.390 2.3191E-07
        0.400 1.2332E-07
        0.420 6.0709E-08
        0.440 4.2271E-08
        0.460 3.6790E-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 1.2745E-08
        0.900 2.1518E-08
        1.000 3.1895E-08
        1.200 3.8274E-08
        1.400 6.7046E-08
        1.600 8.9440E-08
        1.800 2.4560E-07
        2.000 5.1762E-07
        2.200 1.1766E-06
        2.400 1.6966E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: -7.53e-07 1.17e-08 -3.62e-11 5.72e-07 6.09e-10 0.291
    nd: 1.595509
    Vd: 39.242273
    glass_code: 596392
    density: 2.63 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 8.4e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 1.04e-05 K<sup>-1</sup>
    dPgF: 0.0023
    climatic_resistance: 2.0
    acid_resistance: 1.0
    phosphate_resistance: 1.0
