# 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: "inquiry glass        "
DATA:
  - type: formula 2 
    wavelength_range: 0.38 2.5
    coefficients: 0 1.73562085 0.0129624742 0.317487012 0.0612884288 1.95398203 161.559441
  - type: tabulated k
    data: |
        0.380 2.4678E-06
        0.390 1.2343E-06
        0.400 7.1571E-07
        0.405 5.7533E-07
        0.420 3.3217E-07
        0.436 2.0932E-07
        0.460 1.3809E-07
        0.500 8.1636E-08
        0.546 4.2220E-08
        0.580 3.1655E-08
        0.620 3.7858E-08
        0.660 4.0300E-08
        0.700 3.1415E-08
        1.060 1.3523E-08
        1.530 9.3423E-08
        1.970 6.6068E-07
        2.325 2.8542E-06
        2.500 4.1988E-06
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: -4.13e-06 7.65e-09 -1.12e-11 9.9e-07 1.57e-09 0.287
    nd: 1.7847
    Vd: 26.1
    glass_code: 785261.328
    glass_status: special
    density: 3.28 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 8.7e-06 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 1e-05 K<sup>-1</sup>
    dPgF: 0.014
    climatic_resistance: 1.0
    stain_resistance: 0.0
    acid_resistance: 1.0
    alkali_resistance: 1.3
    phosphate_resistance: 1.0
