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Optical constants of SUMITA - LaFK
K-LaFK50T

Wavelength: µm
 (0.300 – 2.000)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.0499602-0.012620328λ^{2}+0.023782461λ^{-2}+0.00047558583λ^{-4}+1.3668355\text{×}10^{-05}λ^{-6}-8.9484311\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: 2.67e-06 1.57e-08 -3.04e-10 6.28e-07 3.17e-10 0.192
n_d: 1.76600
V_d: 49.8
glass_code: 766498
density: 4.75 g/cm3
coefficient_of_thermal_expansion_1: 6.3e-06 K-1
coefficient_of_thermal_expansion_2: 8.1e-06 K-1
ΔP_gF: -0.0064
climatic_resistance: 1.0
acid_resistance: 3.0

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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