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Optical constants of SUMITA - LaFK
K-LaFK58(M)

Wavelength: µm
 (0.270 – 2.000)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.8101512-0.012726602λ^{2}+0.017535146λ^{-2}+0.00035913422λ^{-4}-8.8851874\text{×}10^{-06}λ^{-6}+6.1852602\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -4.73e-06 9.33e-09 -1.14e-10 4.36e-07 4.83e-10 0.169
n_d: 1.69097
V_d: 58.4
glass_code: 696590
density: 4.56 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.9e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 9.3e-06 K-1
ΔP_gF: -0.0029
climatic_resistance: 1.0
acid_resistance: 4.0

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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