# 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: 0.36 2.4
    coefficients: 0 1.38531342 0.0104074567 0.122372945 0.0557440088 1.40508326 144.878733
  - type: tabulated k
    data: |
        0.360 4.7576E-06
        0.370 1.5041E-06
        0.380 5.2723E-07
        0.390 2.2189E-07
        0.400 1.2001E-07
        0.420 5.3908E-08
        0.440 3.8729E-08
        0.460 3.3094E-08
        0.480 2.6832E-08
        0.500 1.9944E-08
        0.550 1.3150E-08
        0.600 1.4345E-08
        0.650 1.5541E-08
        0.700 1.6736E-08
        0.800 6.3694E-09
        0.900 1.4338E-08
        1.000 1.5931E-08
        1.200 1.9118E-08
        1.400 6.7046E-08
        1.600 7.6624E-08
        1.800 2.6018E-07
        2.000 5.5054E-07
        2.200 1.4028E-06
        2.400 1.9698E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: -4.74e-07 1.38e-08 -3.81e-11 7.33e-07 9.25e-10 0.264
    nd: 1.603420
    Vd: 38.027347
    glass_code: 603380
    density: 2.63 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 8.3e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 9.6e-06 K<sup>-1</sup>
    dPgF: 0.0036
    climatic_resistance: 1.0
    acid_resistance: 1.0
    phosphate_resistance: 1.2
