# 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/schott_2017-01-20b.agf\">SCHOTT Zemax catalog 2017-01-20b</a> (obtained from <a href=\"http://www.schott.com/advanced_optics/english/download/\">http://www.schott.com</a>)<br>See also <a href=\"http://refractiveindex.info/download/data/2017/schott_2017-01-20.pdf\">SCHOTT glass data sheets</a>"
COMMENTS: "was replaced by N-LASF46A"
DATA:
  - type: formula 2 
    wavelength_range: 0.38 2.5
    coefficients: 0 2.18073678 0.0125642118 0.298978656 0.056469999 1.62190046 105.662819
  - type: tabulated k
    data: |
        0.380 5.5703E-06
        0.390 3.7189E-06
        0.400 2.5033E-06
        0.405 2.0748E-06
        0.420 1.2588E-06
        0.436 8.2970E-07
        0.460 5.0148E-07
        0.500 2.4004E-07
        0.546 1.0016E-07
        0.580 6.1952E-08
        0.620 4.1885E-08
        0.660 2.9620E-08
        0.700 1.7897E-08
        1.060 1.6913E-08
        1.530 9.3423E-08
        1.970 5.9139E-07
        2.325 3.7805E-06
        2.500 1.1032E-05
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: 3.6e-06 1.2e-08 -2.68e-11 8.42e-07 1.15e-09 0.272
    nd: 1.90138E+00
    Vd: 3.16400E+01
    glass_code: 901316.446
    glass_status: preferred
    density: 4.46 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 6.02e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 7.23e-06 K<sup>-1</sup>
    dPgF: 0.0035
    climatic_resistance: 1.0
    stain_resistance: 0.0
    acid_resistance: 3.3
    alkali_resistance: 1.0
    phosphate_resistance: 1.0
