# 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: "Improved Transmittance"
DATA:
  - type: formula 3 
    range: 0.3 2.4
    coefficients: 2.9836628 -0.012013213 2 0.035225183 -2 0.0031766736 -4 -0.000253238 -6 2.7797101e-05 -8
  - type: tabulated k
    data: |
        0.370 1.3559E-05
        0.380 5.3583E-06
        0.390 2.0295E-06
        0.400 7.9088E-07
        0.420 1.7848E-07
        0.440 7.7891E-08
        0.460 4.7899E-08
        0.480 3.4533E-08
        0.500 2.3945E-08
        0.550 1.3150E-08
        0.600 1.4345E-08
        0.650 2.0732E-08
        0.700 1.6736E-08
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 25.0 °C
    coefficients_of_thermal_dispersion: 1.231e-05 0.0 0.0 0.0 0.0 0.0
    n_d: 1.761819
    V_d: 26.553651
    glass_code: 762266
    glass_status: preferred
    density: 4.55 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 7.1e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 8.2e-06 K<sup>-1</sup>
    ΔP_gF: 0.0125
    acid_resistance: 1.2
    phosphate_resistance: 2.0
