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Optical constants of SUMITA - LaFK
K-LaFK60(M)

Wavelength: µm
 (0.270–2.000)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula

$$n^2=2.6117274-0.01021392λ^{2}+0.014472638λ^{-2}+0.00020938021λ^{-4}+2.8785693\text{×}10^{-06}λ^{-6}-9.063171\text{×}10^{-08}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -9.6e-06 1.03e-08 -7.48e-11 3.87e-07 1.56e-10 0.188
nd: 1.62848
Vd: 63.2
glass_code: 632638
density: 4.29 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 9.3e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 1.14e-05 K-1
dPgF: 0.0031
climatic_resistance: 1.0
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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