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Optical constants of SUMITA - SK (Dense crown)
K-SK5

Wavelength: µm
 (0.280 – 2.000)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.4895419-0.011359477λ^{2}+0.012448401λ^{-2}+0.00055781133λ^{-4}-5.0555753\text{×}10^{-05}λ^{-6}+2.8679508\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 2.52e-06 1.71e-08 -2.45e-10 3.45e-07 4.68e-10 0.211
n_d: 1.58913
V_d: 61.2
glass_code: 589612
density: 3.32 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 5.4e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 6.7e-06 K-1
ΔP_gF: -0.0012
acid_resistance: 2.0

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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