# 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 
    range: 0.37 2.4
    coefficients: 0 1.61549392 0.0119830897 0.262433239 0.059651024 2.09426189 181.657554
  - type: tabulated k
    data: |
        0.370 7.0899E-06
        0.380 2.6961E-06
        0.390 1.2429E-06
        0.400 6.7075E-07
        0.420 2.3896E-07
        0.440 1.3201E-07
        0.460 9.2677E-08
        0.480 6.9381E-08
        0.500 5.2065E-08
        0.550 2.6340E-08
        0.600 2.3933E-08
        0.650 3.6335E-08
        0.700 3.3523E-08
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 1.5931E-08
        1.200 1.9118E-08
        1.400 6.7046E-08
        1.600 8.9440E-08
        1.800 2.1649E-07
        2.000 3.7033E-07
        2.200 9.5337E-07
        2.400 1.4065E-06
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 25.0 °C
    coefficients_of_thermal_dispersion: -1.13e-06 1.15e-08 -4.29e-11 8.62e-07 1.18e-09 0.295
    n_d: 1.728250
    V_d: 28.460599
    glass_code: 728285
    density: 3.06 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 8e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 9.7e-06 K<sup>-1</sup>
    ΔP_gF: 0.0123
    climatic_resistance: 1.0
    acid_resistance: 1.0
    phosphate_resistance: 1.0
