# 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: |
    General 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: |
        0.390 6.5290E-06
        0.400 3.1136E-06
        0.420 1.0199E-06
        0.440 4.9567E-07
        0.460 3.0920E-07
        0.480 2.2013E-07
        0.500 1.6243E-07
        0.550 7.5045E-08
        0.600 3.3540E-08
        0.650 2.0732E-08
        0.700 1.6736E-08
        0.750 1.7932E-08
        0.780 1.8649E-08
        0.800 2.5516E-08
        0.830 1.9845E-08
        0.850 2.7111E-08
        0.900 2.8705E-08
        0.950 3.0300E-08
        1.000 3.1895E-08
        1.050 2.5105E-08
        1.060 8.4394E-09
        1.100 2.6300E-08
        1.200 1.9118E-08
        1.300 2.0711E-08
        1.400 5.5844E-08
        1.500 9.5877E-08
        1.550 8.6645E-08
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
    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