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Optical constants of SUMITA - LaFK
K-LaFK65

Wavelength: µm
 (0.270 – 2.000)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.7016579-0.011617767λ^{2}+0.015597681λ^{-2}+0.00019111207λ^{-4}+1.132323\text{×}10^{-05}λ^{-6}-5.9630893\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -7.58e-06 9.42e-09 -3.47e-11 3.97e-07 4.24e-10 0.182
n_d: 1.65670
V_d: 62.3
glass_code: 657623
density: 4.36 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 8.1e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 1.03e-05 K-1
ΔP_gF: 0.0026
climatic_resistance: 1.0
acid_resistance: 5.0

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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