# 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: "Recommended "
DATA:
  - type: formula 2 
    wavelength_range: 0.35 2.4
    coefficients: 0 1.41059317 0.00963312192 0.111201306 0.049877821 1.34148939 152.237696
  - type: tabulated k
    data: |
        0.350 7.8359E-06
        0.360 2.5542E-06
        0.370 9.6724E-07
        0.380 4.2112E-07
        0.390 1.9864E-07
        0.400 1.1340E-07
        0.420 4.7122E-08
        0.440 3.1655E-08
        0.460 3.3094E-08
        0.480 2.6832E-08
        0.500 1.9944E-08
        0.550 8.7623E-09
        0.600 1.4345E-08
        0.650 2.0732E-08
        0.700 1.6736E-08
        0.800 6.3694E-09
        0.900 1.4338E-08
        1.000 1.5931E-08
        1.200 1.9118E-08
        1.400 5.5844E-08
        1.600 7.6624E-08
        1.800 2.8938E-07
        2.000 6.1658E-07
        2.200 1.4788E-06
        2.400 2.2256E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: -1.96e-06 1.25e-08 -3.24e-11 5e-07 6.02e-10 0.288
    nd: 1.605620
    Vd: 43.706978
    glass_code: 606437
    density: 2.91 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 8.4e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 9.7e-06 K<sup>-1</sup>
    dPgF: 0.0013
    climatic_resistance: 1.0
    acid_resistance: 1.0
    phosphate_resistance: 1.0
