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Optical constants of SUMITA - LaFK
K-LaFK65(M)

Wavelength: µm
 (0.270 – 2.000)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.6875081-0.011599607λ^{2}+0.015290297λ^{-2}+0.00024225647λ^{-4}+4.1061121\text{×}10^{-06}λ^{-6}-2.0740076\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: -7.58e-06 9.42e-09 -3.47e-11 3.97e-07 4.24e-10 0.182
n_d: 1.65224
V_d: 62.2
glass_code: 657623
density: 4.36 g/cm3
coefficient_of_thermal_expansion_1: 8.1e-06 K-1
coefficient_of_thermal_expansion_2: 1.03e-05 K-1
ΔP_gF: 0.0025
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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