# 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: "Recommended - Lightweight "
DATA:
  - type: formula 2 
    range: 0.37 2.4
    coefficients: 0 1.66755531 0.0122052137 0.294411865 0.0597775329 2.49422119 214.869618
  - type: tabulated k
    data: |
        0.370 6.2428E-06
        0.380 2.4146E-06
        0.390 1.1069E-06
        0.400 6.3169E-07
        0.420 2.4615E-07
        0.440 1.3565E-07
        0.460 1.0019E-07
        0.480 7.7169E-08
        0.500 5.6098E-08
        0.550 2.1939E-08
        0.600 2.8734E-08
        0.650 3.6335E-08
        0.700 2.7922E-08
        0.800 6.3694E-09
        0.900 7.1656E-09
        1.000 7.9617E-09
        1.200 2.8691E-08
        1.400 5.5844E-08
        1.600 7.6624E-08
        1.800 1.8743E-07
        2.000 3.0530E-07
        2.200 6.9645E-07
        2.400 1.1411E-06
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 25.0 °C
    coefficients_of_thermal_dispersion: -2.51e-06 1.06e-08 -3.89e-11 8.33e-07 1.27e-09 0.305
    n_d: 1.755199
    V_d: 27.512089
    glass_code: 755275
    density: 3.15 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 8.5e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 1e-05 K<sup>-1</sup>
    ΔP_gF: 0.0133
    climatic_resistance: 1.0
    acid_resistance: 1.0
    phosphate_resistance: 1.0
