# 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="https://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="https://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: 2.8884392 -0.010882671 2 0.026418653 -2 0.0011678492 -4 -5.2245897e-05 -6 6.2881561e-06 -8
  - type: tabulated k
    data: |
        0.340 5.9721E-06
        0.350 2.4833E-06
        0.360 1.1473E-06
        0.370 5.8431E-07
        0.380 3.5239E-07
        0.390 2.0195E-07
        0.400 1.2663E-07
        0.420 6.4114E-08
        0.440 4.5817E-08
        0.460 3.3094E-08
        0.480 2.2987E-08
        0.500 1.5947E-08
        0.550 8.7623E-09
        0.600 1.4345E-08
        0.650 1.5541E-08
        0.700 1.1152E-08
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 8.775e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.723421
    Vd: 38.034270
    glass_code: 723380
    glass_status: preferred
    density:
      - value: 4240
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.9e-06
      - temperature_range: 293 573
        value: 8e-06
    dPgF: -0.0005
    resistance:
        acid: 51.2
        phosphate: 2.2