# 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: 2.56958 -0.0086466584 2 0.016903144 -2 7.624944e-05 -4 2.6138532e-05 -6 -7.4670354e-07 -8
  - type: tabulated k
    data: |
        0.320 8.9294E-06
        0.330 4.2265E-06
        0.340 2.1605E-06
        0.350 1.1573E-06
        0.360 6.3926E-07
        0.370 3.4312E-07
        0.380 2.0647E-07
        0.390 1.3641E-07
        0.400 8.0589E-08
        0.420 4.3734E-08
        0.440 3.8729E-08
        0.460 2.9402E-08
        0.480 2.2987E-08
        0.500 1.9944E-08
        0.550 1.3150E-08
        0.600 1.9137E-08
        0.650 2.5928E-08
        0.700 2.7922E-08
        0.800 3.8312E-08
        0.900 5.7526E-08
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 25.0 °C
    coefficients_of_thermal_dispersion: 5.26e-06 0.0 0.0 0.0 0.0 0.0
    n_d: 1.617646
    V_d: 55.049782
    glass_code: 618551
    glass_status: preferred
    density: 3.63 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 6.5e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 7.6e-06 K<sup>-1</sup>
    ΔP_gF: -0.0021
    acid_resistance: 51.2
    phosphate_resistance: 2.2
