# 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: "Improved Transmittance"
DATA:
  - type: formula 3 
    range: 0.3 2.4
    coefficients: 3.120642 -0.011286328 2 0.040543249 -2 0.0033876996 -4 -0.00024180036 -6 2.7440285e-05 -8
  - type: tabulated k
    data: |
        0.350 1.2826E-05
        0.360 5.4348E-06
        0.370 2.3511E-06
        0.380 1.1662E-06
        0.390 6.5398E-07
        0.400 3.7094E-07
        0.420 1.4690E-07
        0.440 6.7167E-08
        0.460 3.6790E-08
        0.480 2.2987E-08
        0.500 1.5947E-08
        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: 1.501e-05 0.0 0.0 0.0 0.0 0.0
    n_d: 1.805177
    V_d: 25.435012
    glass_code: 805254
    glass_status: preferred
    density: 5.19 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 8.1e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 9e-06 K<sup>-1</sup>
    ΔP_gF: 0.0097
    acid_resistance: 51.2
    phosphate_resistance: 3.2
