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Optical constants of SUMITA - LaFK
K-LaFK55

Wavelength: µm
 (0.280–2.000)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula

$$n^2=2.8185206-0.013230603λ^{2}+0.018037587λ^{-2}+0.00045589602λ^{-4}-2.131672\text{×}10^{-05}λ^{-6}+1.5724724\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -2.43e-06 1.08e-08 -8.1e-11 5.36e-07 6.73e-10 0.111
nd: 1.69400
Vd: 56.3
glass_code: 694563
density: 4.34 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 7.3e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 9.1e-06 K-1
dPgF: -0.0045
climatic_resistance: 1.0
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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