# 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: 2.6957457 -0.010264221 2 0.025940795 -2 0.0014263975 -4 -6.8645974e-05 -6 8.2048945e-06 -8
  - type: tabulated k
    data: |
        0.330 1.2093E-05
        0.340 4.3545E-06
        0.350 1.7683E-06
        0.360 9.0158E-07
        0.370 5.1336E-07
        0.380 3.1189E-07
        0.390 1.9864E-07
        0.400 1.2994E-07
        0.420 6.7523E-08
        0.440 4.5817E-08
        0.460 3.3094E-08
        0.480 2.6832E-08
        0.500 1.9944E-08
        0.550 8.7623E-09
        0.600 1.4345E-08
        0.650 2.0732E-08
        0.700 1.6736E-08
        0.800 6.3694E-09
        0.900 7.1656E-09
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 25.0 °C
    coefficients_of_thermal_dispersion: 9.676e-06 0.0 0.0 0.0 0.0 0.0
    n_d: 1.666799
    V_d: 33.046816
    glass_code: 667331
    glass_status: preferred
    density: 4.02 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 7.6e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 8.6e-06 K<sup>-1</sup>
    ΔP_gF: 0.0014
    acid_resistance: 1.2
    phosphate_resistance: 2.0
