# 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: 2.6360314 -0.0089450876 2 0.025228056 -2 0.0011120943 -4 -3.7887387e-05 -6 6.3760973e-06 -8
  - type: tabulated k
    data: |
        0.330 6.6327E-06
        0.340 2.3471E-06
        0.350 8.7654E-07
        0.360 3.9896E-07
        0.370 2.2001E-07
        0.380 1.4557E-07
        0.390 9.7732E-08
        0.400 6.1061E-08
        0.420 3.6968E-08
        0.440 2.8124E-08
        0.460 2.2030E-08
        0.480 1.5310E-08
        0.500 1.1955E-08
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 1.1152E-08
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 25.0 °C
    coefficients_of_thermal_dispersion: 5.749e-06 0.0 0.0 0.0 0.0 0.0
    n_d: 1.647689
    V_d: 33.802937
    glass_code: 648338
    glass_status: preferred
    density: 3.85 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 8.8e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 9.8e-06 K<sup>-1</sup>
    ΔP_gF: 0.0015
    acid_resistance: 2.2
    phosphate_resistance: 2.0
