# 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: 3.0705638 -0.013310234 2 0.025280355 -2 0.00021829234 -4 3.2555293e-05 -6 -8.1300421e-07 -8
  - type: tabulated k
    data: |
        0.280 7.8132E-06
        0.290 5.2012E-06
        0.300 3.9027E-06
        0.310 3.7805E-06
        0.320 2.0221E-06
        0.330 1.3811E-06
        0.340 9.2665E-07
        0.350 5.9724E-07
        0.360 3.6296E-07
        0.370 2.3273E-07
        0.380 1.5193E-07
        0.390 1.0414E-07
        0.400 7.7326E-08
        0.420 5.0514E-08
        0.440 3.8729E-08
        0.460 2.9402E-08
        0.480 2.2987E-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
        0.750 1.1949E-08
        0.780 6.2101E-09
        0.800 6.3694E-09
        0.830 1.3223E-08
        0.850 1.3542E-08
        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: 4.74e-06 9.55e-09 -5.15e-11 6.48e-07 3.61e-10 0.166
    nd: 1.77250
    Vd: 49.50
    glass_code: 773495
    glass_status: standard
    density:
      - value: 4620
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.7e-06
      - temperature_range: 293 573
        value: 7e-06
    dPgF: -0.0072
    resistance:
        climatic: 1.0
        stain: 2.0
        acid: 4.0