# 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 2 
    wavelength_range: 0.3 2.4
    coefficients: 0 1.35097 0.007454835 0.2324447 0.02949403 1.179 131.6202
  - type: tabulated k
    data: |
        0.310 5.4451E-06
        0.320 1.9774E-06
        0.330 7.5547E-07
        0.340 3.4587E-07
        0.350 1.5167E-07
        0.360 7.8413E-08
        0.370 4.4500E-08
        0.380 2.7339E-08
        0.390 1.8677E-08
        0.400 1.2758E-08
        0.420 1.0042E-08
        0.440 1.0520E-08
        0.460 7.3285E-09
        0.480 7.6471E-09
        0.500 3.9809E-09
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 5.5732E-09
        0.800 1.2745E-08
        0.900 1.4338E-08
        1.000 1.5931E-08
        1.200 9.5974E-08
        1.400 7.8260E-08
        1.600 1.9243E-07
        1.800 3.9206E-07
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 5.3371e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.622296
    Vd: 53.186644
    glass_code: 622532
    glass_status: preferred
    density: 3.68 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 6.4e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 7.7e-06 K<sup>-1</sup>
    dPgF: -0.0015
    acid_resistance: 51.2
    phosphate_resistance: 2.0
