# 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: 2.48951 -0.01224496 2 0.01294262 -2 0.0003490449 -4 -1.777228e-05 -6 9.113719e-07 -8
  - type: tabulated k
    data: |
        0.280 7.3459E-06
        0.290 5.2233E-06
        0.300 3.4777E-06
        0.310 2.2115E-06
        0.320 1.3008E-06
        0.330 7.5547E-07
        0.340 4.0493E-07
        0.350 2.3526E-07
        0.360 1.0206E-07
        0.370 5.9484E-08
        0.380 3.6507E-08
        0.390 2.4928E-08
        0.400 1.5955E-08
        0.420 1.6753E-08
        0.440 1.0520E-08
        0.460 7.3285E-09
        0.480 1.1476E-08
        0.500 1.1955E-08
        0.550 1.3150E-08
        0.600 1.4345E-08
        0.650 1.5541E-08
        0.700 1.6736E-08
        0.750 2.3921E-08
        0.780 3.7354E-08
        0.800 4.4720E-08
        0.830 5.3052E-08
        0.850 5.4330E-08
        0.900 5.7526E-08
        0.950 6.8347E-08
        1.000 7.1944E-08
        1.050 7.5541E-08
        1.060 8.4777E-08
        1.100 7.9138E-08
        1.200 7.6702E-08
        1.300 8.3093E-08
        1.400 2.1371E-07
        1.500 1.3203E-07
        1.550 1.2397E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 3.33e-06 1.01e-08 -4.77e-11 6.07e-07 6.78e-10 8.15e-09
    nd: 1.58913
    Vd: 61.25
    glass_code: 589613
    glass_status: standard
    density:
      - value: 2820
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.6e-06
      - temperature_range: 293 573
        value: 8.8e-06
    dPgF: -0.0007
    resistance:
        climatic: 2.0
        stain: 2.0
        acid: 4.0