# 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-LASF31A"
DATA:
  - type: formula 2 
    range: 0.32 2.5
    coefficients: 0 1.71317198 0.00819172228 0.718575109 0.0297801704 1.7233247 138.461313
  - type: tabulated k
    data: |
        0.320 3.9848E-06
        0.334 3.4222E-06
        0.350 1.7387E-06
        0.365 9.0220E-07
        0.370 7.4773E-07
        0.380 5.2107E-07
        0.390 3.5713E-07
        0.400 2.5268E-07
        0.405 2.2477E-07
        0.420 1.7090E-07
        0.436 1.3089E-07
        0.460 9.0600E-08
        0.500 4.3563E-08
        0.546 1.7467E-08
        0.580 1.2969E-08
        0.620 1.3863E-08
        0.660 1.2643E-08
        0.700 1.3409E-08
        1.060 2.3702E-08
        1.530 3.9118E-08
        1.970 2.5598E-07
        2.325 1.5595E-06
        2.500 4.9035E-06
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: 2.29e-06 8.93e-09 -1.59e-11 6.52e-07 8.09e-10 0.236
    n_d: 1.88067E+00
    V_d: 4.10100E+01
    glass_code: 881410.541
    glass_status: preferred
    density: 5.41 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 6.8e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 7.7e-06 K<sup>-1</sup>
    ΔP_gF: -0.0084
    climatic_resistance: 1.0
    stain_resistance: 0.0
    acid_resistance: 2.0
    alkali_resistance: 1.0
    phosphate_resistance: 1.0
