# 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: 2.7934634 -0.011916323 2 0.027252732 -2 0.0026477261 -4 -0.00022721609 -6 2.0411942e-05 -8
  - type: tabulated k
    data: |
        0.370 6.4990E-06
        0.380 2.4826E-06
        0.390 9.7671E-07
        0.400 4.0691E-07
        0.420 1.0525E-07
        0.440 5.2919E-08
        0.460 3.3094E-08
        0.480 2.2987E-08
        0.500 1.9944E-08
        0.550 1.3150E-08
        0.600 1.9137E-08
        0.650 2.0732E-08
        0.700 1.1152E-08
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 25.0 °C
    coefficients_of_thermal_dispersion: 9.239e-06 0.0 0.0 0.0 0.0 0.0
    n_d: 1.698947
    V_d: 30.121211
    glass_code: 699301
    glass_status: preferred
    density: 4.1 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 7.4e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 8.2e-06 K<sup>-1</sup>
    ΔP_gF: 0.0063
    acid_resistance: 1.0
    phosphate_resistance: 1.0
