# 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: 3.5044639 -0.020333833 2 0.0538027 -2 0.0062874192 -4 -0.00056922176 -6 7.3559387e-05 -8
  - type: tabulated k
    data: |
        0.380 9.8103E-06
        0.390 3.2317E-06
        0.400 1.0902E-06
        0.420 2.5696E-07
        0.440 1.3201E-07
        0.460 8.8925E-08
        0.480 6.5494E-08
        0.500 4.4010E-08
        0.550 1.7542E-08
        0.600 9.5589E-09
        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 1.5135E-08
        1.000 1.5931E-08
        1.050 8.3598E-09
        1.060 1.6887E-08
        1.100 8.7579E-09
        1.200 1.9118E-08
        1.300 3.1082E-08
        1.400 1.1197E-07
        1.500 2.0467E-07
        1.550 1.8642E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -4.37e-06 1.1e-08 -2.29e-11 1.06e-06 1.516e-09 0.311
    nd: 1.92286
    Vd: 20.88
    glass_code: 923209
    glass_status: standard
    density:
      - value: 3940
    thermal_expansion:
      - temperature_range: 243 343
        value: 6e-06
      - temperature_range: 293 573
        value: 7.5e-06
    dPgF: 0.0282
    resistance:
        climatic: 1.0
        stain: 2.0
        acid: 1.0