# 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: 2.6124109 -0.0087316589 2 0.024857782 -2 0.00088778616 -4 -9.2640255e-06 -6 4.5028723e-06 -8
  - type: tabulated k
    data: |
        0.330 4.8125E-06
        0.340 1.6175E-06
        0.350 6.5654E-07
        0.360 3.3384E-07
        0.370 1.6656E-07
        0.380 1.0460E-07
        0.390 5.9534E-08
        0.400 3.1991E-08
        0.420 2.0114E-08
        0.440 1.7551E-08
        0.460 1.4672E-08
        0.480 1.1476E-08
        0.500 7.9657E-09
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 1.1152E-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: 5.245e-06 0.0 0.0 0.0 0.0 0.0
    n_d: 1.639799
    V_d: 34.477127
    glass_code: 640345
    glass_status: preferred
    density: 3.78 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: 0.0018
    acid_resistance: 1.0
    phosphate_resistance: 2.0
