# 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: 3.2126997 -0.01535137 2 0.028440374 -2 0.00079180171 -4 -1.7032771e-05 -6 2.6219094e-06 -8
  - type: tabulated k
    data: |
        0.320 1.1727E-05
        0.330 5.3577E-06
        0.340 2.7642E-06
        0.350 1.6149E-06
        0.360 9.4109E-07
        0.370 5.8431E-07
        0.380 3.8656E-07
        0.390 2.3860E-07
        0.400 1.6998E-07
        0.420 1.0525E-07
        0.440 8.1473E-08
        0.460 5.9043E-08
        0.480 4.2250E-08
        0.500 2.7950E-08
        0.550 1.7542E-08
        0.600 2.3933E-08
        0.650 2.5928E-08
        0.700 1.6736E-08
        0.800 1.9127E-08
        0.900 2.1518E-08
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 25.0 °C
    coefficients_of_thermal_dispersion: 4.815e-06 0.0 0.0 0.0 0.0 0.0
    n_d: 1.815543
    V_d: 44.361146
    glass_code: 816444
    glass_status: preferred
    density: 4.54 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 5.9e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 7.1e-06 K<sup>-1</sup>
    ΔP_gF: -0.0084
    acid_resistance: 4.2
    phosphate_resistance: 1.0
