# 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 
    wavelength_range: 0.3 2.4
    coefficients: 2.2739528 -0.0091160058 2 0.01226882 -2 -0.00031677862 -4 6.0075221e-05 -6 -2.8098187e-06 -8
  - type: tabulated k
    data: |
        0.300 4.2302E-06
        0.310 2.1400E-06
        0.320 1.0970E-06
        0.330 5.8599E-07
        0.340 3.1530E-07
        0.350 1.6937E-07
        0.360 9.3172E-08
        0.370 6.2490E-08
        0.380 6.1092E-08
        0.390 3.1191E-08
        0.400 1.9156E-08
        0.420 2.0114E-08
        0.440 2.1072E-08
        0.460 1.8349E-08
        0.480 1.5310E-08
        0.500 1.5947E-08
        0.550 1.3150E-08
        0.600 1.9137E-08
        0.650 2.0732E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        0.900 2.1518E-08
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 25.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 3.313e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.518206
    Vd: 65.039654
    glass_code: 518650
    glass_status: preferred
    density: 2.52 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 7.1e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 8.2e-06 K<sup>-1</sup>
    dPgF: -0.0036
    acid_resistance: 1.0
    phosphate_resistance: 1.0
