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Optical constants of SUMITA - PFK
K-PFK90

Wavelength: µm
 (0.270 – 2.000)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.1094643-0.0048026812λ^{2}+0.0067645351λ^{-2}+8.3329962\text{×}10^{-05}λ^{-4}+3.4196126\text{×}10^{-07}λ^{-6}-8.4933854\text{×}10^{-08}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: -2.23e-05 -2.13e-09 9.79e-11 2.57e-07 -1.68e-10 0.221
n_d: 1.45880
V_d: 90.0
glass_code: 459900
density: 3.72 g/cm3
coefficient_of_thermal_expansion_1: 1.37e-05 K-1
coefficient_of_thermal_expansion_2: 1.65e-05 K-1
ΔP_gF: 0.0442
climatic_resistance: 1.0
acid_resistance: 2.0

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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