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Optical constants of SUMITA - PSK (Dense phosphate crown)
K-PSK400

Wavelength: µm
 (0.270 – 2.000)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.5082353-0.0073346094λ^{2}+0.012618342λ^{-2}+0.00023225231λ^{-4}-9.8397157\text{×}10^{-06}λ^{-6}+6.9870981\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: -1.29e-05 6.41e-09 -4.23e-11 4.04e-07 7.68e-10 0.173
n_d: 1.59500
V_d: 67.8
glass_code: 595678
density: 4.05 g/cm3
coefficient_of_thermal_expansion_1: 1.01e-05 K-1
coefficient_of_thermal_expansion_2: 1.29e-05 K-1
ΔP_gF: 0.0129
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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