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Optical constants of SUMITA - PBK
K-PBK40(M)

Wavelength: µm
 (0.280 – 2.000)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.2666695-0.010697246λ^{2}+0.010455014λ^{-2}+0.00024731938λ^{-4}-9.4216199\text{×}10^{-06}λ^{-6}+3.3360125\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 4.91e-06 2.06e-08 1.52e-11 4.18e-07 1.61e-10 0.165
nd: 1.51497
Vd: 63.3
glass_code: 518635
density: 2.39 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 5.4e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.3e-06 K-1
dPgF: -0.0035
climatic_resistance: 2.0
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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