# 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: |
    Preforms for Precision molding
DATA:
  - type: formula 3
    wavelength_range: 0.36501 1.01398
    coefficients: 2.813412 -0.01332448 2 0.01927865 -2 0.0004124452 -4 -9.940432e-06 -6 9.622024e-07 -8
  - type: tabulated k
    data: |
        0.290 7.3714E-06
        0.300 5.1427E-06
        0.310 3.7240E-06
        0.320 2.4841E-06
        0.330 1.5747E-06
        0.340 9.7277E-07
        0.350 5.8347E-07
        0.360 3.1140E-07
        0.370 1.7280E-07
        0.380 1.0460E-07
        0.390 6.2700E-08
        0.400 4.1652E-08
        0.420 3.0216E-08
        0.440 2.1072E-08
        0.460 1.4672E-08
        0.480 1.1476E-08
        0.500 3.9809E-09
        0.550 4.3790E-09
        0.600 9.5589E-09
        0.650 5.1751E-09
        0.700 5.5732E-09
        0.750 5.9713E-09
        0.780 1.2427E-08
        0.800 6.3694E-09
        0.830 1.3223E-08
        0.850 6.7675E-09
        0.900 7.1656E-09
        0.950 7.5636E-09
        1.000 7.9617E-09
        1.050 8.3598E-09
        1.060 8.4394E-09
        1.100 8.7579E-09
        1.200 9.5541E-09
        1.300 1.0350E-08
        1.400 3.3473E-08
        1.500 3.5864E-08
        1.550 3.7059E-08
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 3.06e-06 7.53e-09 -3.42e-11 7.88e-07 1.05e-09 4.45e-10
    nd: 1.69350
    Vd: 53.20
    glass_code: 694532
    glass_status: standard
    density:
      - value: 3520
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.5e-06
      - temperature_range: 293 573
        value: 8.6e-06
    dPgF: -0.0059
    resistance:
        climatic: 1.0
        stain: 4.0
        acid: 4.0