# 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 2
    wavelength_range: 0.32 2.4
    coefficients: 0 1.68191258 0.0077668425 0.493779818 0.0288916181 1.45682822 99.2574356
  - type: tabulated k
    data: |
        0.320 6.4317E-06
        0.330 3.3429E-06
        0.340 1.8754E-06
        0.350 1.1573E-06
        0.360 7.1179E-07
        0.370 4.4408E-07
        0.380 2.6532E-07
        0.390 1.6901E-07
        0.400 1.1671E-07
        0.420 6.7523E-08
        0.440 4.2271E-08
        0.460 2.9402E-08
        0.480 1.9146E-08
        0.500 1.5947E-08
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 1.1152E-08
        0.800 1.2745E-08
        0.900 2.1518E-08
        1.000 2.3909E-08
        1.200 2.8691E-08
        1.400 6.7046E-08
        1.600 8.9440E-08
        1.800 2.4560E-07
        2.000 6.6629E-07
        2.200 2.0402E-06
        2.400 7.9358E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 3.21e-06 1.28e-08 -3.45e-11 4.22e-07 5.14e-10 0.275
    nd: 1.804000
    Vd: 46.570373
    glass_code: 804466
    glass_status: preferred
    density:
      - value: 4760
    thermal_expansion:
      - temperature_range: 243 343
        value: 6e-06
      - temperature_range: 293 573
        value: 7.3e-06
    dPgF: -0.009
    resistance:
        acid: 4.1
        phosphate: 1.0