# 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: ""
DATA:
  - type: formula 3 
    range: 0.3 2.4
    coefficients: 2.9223334 -0.015268924 2 0.020070735 -2 0.00049690538 -4 -1.5326299e-05 -6 1.0772354e-06 -8
  - type: tabulated k
    data: |
        0.310 7.9406E-06
        0.320 5.3992E-06
        0.330 3.6405E-06
        0.340 2.4123E-06
        0.350 1.4696E-06
        0.360 9.0158E-07
        0.370 5.4862E-07
        0.380 3.5239E-07
        0.390 2.1856E-07
        0.400 1.4656E-07
        0.420 8.1192E-08
        0.440 6.0036E-08
        0.460 4.7899E-08
        0.480 3.4533E-08
        0.500 2.7950E-08
        0.550 2.1939E-08
        0.600 2.3933E-08
        0.650 2.0732E-08
        0.700 2.2326E-08
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 25.0 °C
    coefficients_of_thermal_dispersion: 3.3e-06 1.19e-08 -1.31e-12 4.87e-07 4.79e-10 0.196
    n_d: 1.725999
    V_d: 53.565698
    glass_code: 726536
    glass_status: preferred
    density: 3.91 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 5.6e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 7e-06 K<sup>-1</sup>
    ΔP_gF: -0.0091
    climatic_resistance: 2.0
    acid_resistance: 52.0
    phosphate_resistance: 3.0
