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Optical constants of SUMITA - CSK
K-CSK120

Wavelength: µm
 (0.310 – 2.000)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.4804566-0.01071977λ^{2}+0.0135632λ^{-2}+0.00034918608λ^{-4}-2.3041786\text{×}10^{-05}λ^{-6}+1.5937217\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 1.46e-06 1.54e-08 -2.77e-11 5.04e-07 3.24e-10 0.172
nd: 1.58700
Vd: 59.6
glass_code: 587596
density: 3.0 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 7.2e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 9.1e-06 K-1
dPgF: -0.0031
climatic_resistance: 2.0
acid_resistance: 4.0

References

SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book

Data

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

INFO

SUMITA Optical Glass, Inc.

SUMITA Optical Glass, Inc. is a Japanese glass manufacturer

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