# 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: 0.28 2.4
    coefficients: 2.7037498 -0.011741892 2 0.0158996 -2 0.00061265364 -4 -4.6676845e-05 -6 2.6544952e-06 -8
  - type: tabulated k
    data: |
        0.280 1.0261E-05
        0.290 6.4926E-06
        0.300 4.2302E-06
        0.310 2.7350E-06
        0.320 1.7651E-06
        0.330 1.1313E-06
        0.340 7.0716E-07
        0.350 4.2007E-07
        0.360 2.3887E-07
        0.370 1.4793E-07
        0.380 9.5226E-08
        0.390 6.9040E-08
        0.400 5.1341E-08
        0.420 3.6968E-08
        0.440 3.5190E-08
        0.460 2.9402E-08
        0.480 1.9146E-08
        0.500 1.5947E-08
        0.550 8.7623E-09
        0.600 1.4345E-08
        0.650 1.5541E-08
        0.700 1.1152E-08
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 25.0 °C
    coefficients_of_thermal_dispersion: -6.19e-07 1.33e-08 -4.63e-11 6.45e-07 4.57e-10 0.178
    n_d: 1.658296
    V_d: 57.332589
    glass_code: 658573
    glass_status: special
    density: 3.9 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 7.3e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 8.4e-06 K<sup>-1</sup>
    ΔP_gF: -0.0037
    climatic_resistance: 4.0
    acid_resistance: 53.0
    phosphate_resistance: 4.2
