# 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: 2.5602323 -0.0095632018 2 0.021495089 -2 0.00085071191 -4 -3.3535727e-05 -6 4.8953255e-06 -8
  - type: tabulated k
    data: |
        0.330 6.0467E-06
        0.340 2.4123E-06
        0.350 1.1573E-06
        0.360 6.0367E-07
        0.370 3.4312E-07
        0.380 2.0971E-07
        0.390 1.2346E-07
        0.400 7.4066E-08
        0.420 4.0350E-08
        0.440 3.1655E-08
        0.460 2.5714E-08
        0.480 1.9146E-08
        0.500 1.5947E-08
        0.550 1.3150E-08
        0.600 1.4345E-08
        0.650 2.0732E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        0.900 2.1518E-08
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 25.0 °C
    coefficients_of_thermal_dispersion: 7.208e-06 0.0 0.0 0.0 0.0 0.0
    n_d: 1.620451
    V_d: 38.119955
    glass_code: 620381
    glass_status: preferred
    density: 3.56 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 8e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 9.3e-06 K<sup>-1</sup>
    ΔP_gF: -0.001
    acid_resistance: 2.0
    phosphate_resistance: 2.0
