# 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/ohara_2017-11-30.agf">OHARA Zemax catalog 2017-11-30</a> (obtained from <a href="http://www.ohara-inc.co.jp/en/product/optical/list/">http://www.ohara-inc.co.jp</a>)<br>See also <a href="https://refractiveindex.info/download/data/2017/ohara_2017-11-30.pdf">OHARA glass data sheets</a>
COMMENTS: |
    Recommended -The unique relative partial dispersion.
DATA:
  - type: formula 2
    wavelength_range: 0.28 2.4
    coefficients: 0 0.983532327 0.00492234955 0.069568814 0.0193581091 1.11409238 264.275294
  - type: tabulated k
    data: |
        0.280 7.1722E-06
        0.290 4.8930E-06
        0.300 3.0390E-06
        0.310 1.6611E-06
        0.320 8.7214E-07
        0.330 4.2678E-07
        0.340 2.0217E-07
        0.350 9.3463E-08
        0.360 4.3297E-08
        0.370 2.3650E-08
        0.380 1.2120E-08
        0.390 9.3246E-09
        0.400 1.2758E-08
        0.420 1.6753E-08
        0.440 1.7551E-08
        0.460 1.4672E-08
        0.480 1.1476E-08
        0.500 7.9657E-09
        0.550 4.3790E-09
        0.600 9.5589E-09
        0.650 1.5541E-08
        0.700 1.1152E-08
        0.800 1.2745E-08
        0.900 2.1518E-08
        1.000 2.3909E-08
        1.200 1.9118E-08
        1.400 2.2304E-08
        1.600 2.5490E-08
        1.800 2.8677E-08
        2.000 3.1863E-08
        2.200 5.2600E-08
        2.400 3.8235E-08
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -2.22e-05 -1.06e-08 -4.91e-11 2.77e-07 3.92e-10 0.206
    nd: 1.438750
    Vd: 94.946025
    glass_code: 439950
    density:
      - value: 3620
    thermal_expansion:
      - temperature_range: 243 343
        value: 1.45e-05
      - temperature_range: 293 573
        value: 1.69e-05
    dPgF: 0.0461
    resistance:
        climatic: 3.0
        acid: 52.3
        phosphate: 4.3