# 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: 2.961379 -0.0098262329 2 0.036779565 -2 0.0020712902 -4 -9.3348652e-05 -6 1.5491439e-05 -8
  - type: tabulated k
    data: |
        0.350 8.3437E-06
        0.360 3.3552E-06
        0.370 1.5535E-06
        0.380 8.2988E-07
        0.390 5.0438E-07
        0.400 2.9321E-07
        0.420 1.3296E-07
        0.440 7.4313E-08
        0.460 5.1610E-08
        0.480 3.4533E-08
        0.500 2.3945E-08
        0.550 8.7623E-09
        0.600 1.4345E-08
        0.650 2.5928E-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: 1.208e-05 0.0 0.0 0.0 0.0 0.0
    n_d: 1.755199
    V_d: 27.512146
    glass_code: 755275
    glass_status: preferred
    density: 4.78 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 7.9e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 8.9e-06 K<sup>-1</sup>
    ΔP_gF: 0.0074
    acid_resistance: 4.2
    phosphate_resistance: 1.0
