# 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: 2.761638 -0.01132633 2 0.02865346 -2 0.001529038 -4 -8.743577e-05 -6 1.496579e-05 -8
  - type: tabulated k
    data: |
        0.360 1.0347E-05
        0.370 4.5534E-06
        0.380 1.9600E-06
        0.390 9.5131E-07
        0.400 5.7018E-07
        0.420 3.1154E-07
        0.440 2.1293E-07
        0.460 1.6089E-07
        0.480 1.2423E-07
        0.500 9.6658E-08
        0.550 4.3988E-08
        0.600 2.8734E-08
        0.650 3.1129E-08
        0.700 3.3523E-08
        0.750 2.3921E-08
        0.780 2.4878E-08
        0.800 2.5516E-08
        0.830 1.3223E-08
        0.850 1.3542E-08
        0.900 1.4338E-08
        0.950 2.2714E-08
        1.000 2.3909E-08
        1.050 1.6728E-08
        1.060 1.6887E-08
        1.100 1.7525E-08
        1.200 1.9118E-08
        1.300 3.1082E-08
        1.400 1.1197E-07
        1.500 7.1835E-08
        1.550 7.4230E-08
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -8.15303e-06 0.0 0.0 0.0 0.0 0.0
    nd: 1.68893
    Vd: 31.16
    glass_code: 689312
    glass_status: standard
    density:
      - value: 3260
    thermal_expansion:
      - temperature_range: 243 343
        value: 1.15e-05
      - temperature_range: 293 573
        value: 1.43e-05
    dPgF: 0.0115
    resistance:
        climatic: 3.0
        stain: 3.0
        acid: 3.0