# 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/hoya_2017-04-01.agf">HOYA Zemax catalog 2017-04-01</a> (obtained from <a href="http://www.hoya-opticalworld.com/english/datadownload/">http://www.hoya-opticalworld.com</a>)
COMMENTS: |
    Recommended glass type
DATA:
  - type: formula 3
    wavelength_range: 0.36501 1.01398
    coefficients: 3.2756799 -0.014485625 2 0.030780102 -2 0.00078915515 -4 -4.0810229e-06 -6 2.2273965e-06 -8
  - type: tabulated k
    data: |
        0.320 8.6107E-06
        0.330 4.0122E-06
        0.340 2.0718E-06
        0.350 1.1827E-06
        0.360 6.9714E-07
        0.370 4.4408E-07
        0.380 2.9184E-07
        0.390 1.9864E-07
        0.400 1.4656E-07
        0.420 9.1481E-08
        0.440 6.3599E-08
        0.460 4.7899E-08
        0.480 3.4533E-08
        0.500 2.3945E-08
        0.550 1.3150E-08
        0.600 1.4345E-08
        0.650 1.0355E-08
        0.700 1.1152E-08
        0.750 5.9713E-09
        0.780 6.2101E-09
        0.800 6.3694E-09
        0.830 1.3223E-08
        0.850 1.3542E-08
        0.900 1.4338E-08
        0.950 2.2714E-08
        1.000 2.3909E-08
        1.050 2.5105E-08
        1.060 2.5344E-08
        1.100 2.6300E-08
        1.200 2.8691E-08
        1.300 3.1082E-08
        1.400 5.5844E-08
        1.500 8.3850E-08
        1.550 7.4230E-08
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 2.22e-06 9.37e-09 -5.94e-11 8.37e-07 7.86e-10 0.157
    nd: 1.83481
    Vd: 42.72
    glass_code: 835427
    glass_status: standard
    density:
      - value: 4570
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.3e-06
      - temperature_range: 293 573
        value: 7.8e-06
    dPgF: -0.0065
    resistance:
        climatic: 1.0
        stain: 1.0
        acid: 3.0