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Optical constants of SUMITA - SK (Dense crown)
K-SK7

Wavelength: µm
 (0.290–2.000)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula

$$n^2=2.5429277-0.01031719λ^{2}+0.014356944λ^{-2}+0.00031433872λ^{-4}-1.0824341\text{×}10^{-05}λ^{-6}+6.8100892\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 2.39e-07 1.74e-08 -2.81e-10 4.14e-07 1.06e-09 0.188
nd: 1.60729
Vd: 59.5
glass_code: 607595
density: 3.5 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 7.1e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.7e-06 K-1
dPgF: -0.0001
climatic_resistance: 3.0
acid_resistance: 5.0

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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