# 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=\"http://refractiveindex.info/download/data/2017/nikon_2017-11.agf\">NIKON Zemax catalog 2017-11</a> (obtained from <a href=\"http://www.nikon.com/products/glass/lineup/materials/optical/\">http://www.nikon.com</a>)<br>See also <a href=\"http://refractiveindex.info/download/data/2017/hikari_2017-04-01.pdf\">HIKARI glass data sheets</a>"
COMMENTS: ""
DATA:
  - type: formula 3 
    wavelength_range: 0.4 0.7
    coefficients: 2.440824 -0.02002119 2 0.01089699 -2 0.002343396 -4 -0.0002198222 -6 1.221823e-05 -8
  - type: tabulated k
    data: |
        0.310 1.1361E-05
        0.320 2.7472E-06
        0.330 7.9072E-07
        0.340 2.6410E-07
        0.350 1.1080E-07
        0.360 7.2530E-08
        0.370 4.7491E-08
        0.380 3.9569E-08
        0.390 2.8058E-08
        0.400 2.2360E-08
        0.420 1.6753E-08
        0.440 1.7551E-08
        0.460 1.4672E-08
        0.480 7.6471E-09
        0.500 3.9809E-09
        0.550 4.3790E-09
        0.600 4.7770E-09
        0.650 5.1751E-09
        0.700 5.5705E-11
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    nd: 1.575010
    Vd: 41.536400
    glass_code: 575415
    glass_status: preferred
    density: 3.2 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 9.5e-06 K<sup>-1</sup>
    dPgF: -0.0013
