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Optical constants of SUMITA - PFK
K-PFK85

Wavelength: µm
 (0.280 – 2.000)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.1858326-0.0050155632λ^{2}+0.0075107775λ^{-2}+0.00017770562λ^{-4}-1.2164148\text{×}10^{-05}λ^{-6}+6.1341005\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: -2.28e-05 -1.71e-09 6.72e-11 3.39e-07 4.74e-10 0.176
n_d: 1.48563
V_d: 85.2
glass_code: 486852
density: 3.97 g/cm3
coefficient_of_thermal_expansion_1: 1.29e-05 K-1
coefficient_of_thermal_expansion_2: 1.63e-05 K-1
ΔP_gF: 0.0381
climatic_resistance: 1.0
acid_resistance: 1.0

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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