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Optical constants of SUMITA - PSK (Dense phosphate crown)
K-PSK500(M)

Wavelength: µm
 (0.270 – 2.000)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.3725199-0.0067756972λ^{2}+0.01066551λ^{-2}+0.00018548975λ^{-4}-5.7674134\text{×}10^{-06}λ^{-6}+3.2946743\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -1.34e-05 6.83e-09 1.81e-11 3.74e-07 5.55e-10 0.195
n_d: 1.55000
V_d: 71.9
glass_code: 552720
density: 3.76 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 1.08e-05 K-1
  - temperature_range: 20 300 °C
    coefficient: 1.29e-05 K-1
ΔP_gF: 0.0178
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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