# 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/schott_2017-01-20b.agf">SCHOTT Zemax catalog 2017-01-20b</a> (obtained from <a href="https://www.schott.com/en-us/products/optical-glass-p1000267/downloads/">http://www.schott.com</a>)<br>See also <a href="https://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
    wavelength_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
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 2.29e-06 8.93e-09 -1.59e-11 6.52e-07 8.09e-10 0.236
    nd: 1.88067E+00
    Vd: 4.10100E+01
    glass_code: 881410.541
    glass_status: preferred
    density:
      - value: 5410
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.8e-06
      - temperature_range: 293 573
        value: 7.7e-06
    dPgF: -0.0084
    resistance:
        climatic: 1.0
        stain: 0.0
        acid: 2.0
        alkali: 1.0
        phosphate: 1.0