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Optical constants of CDGM - K (Crown)
K4A

Wavelength: µm
 (0.320 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.24187488-0.00891932146λ^{2}+0.0126251741λ^{-2}-0.000298598739λ^{-4}+5.95648836\text{×}10^{-05}λ^{-6}-2.58633231\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 7.37e-06 2.2e-08 -6.81e-12 4.56e-07 4.32e-10 0.199
n_d: 1.508021
V_d: 61.061308
glass_code: 508611
density: 2.43 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 4.7e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 5.2e-06 K-1
ΔP_gF: -0.0045
climatic_resistance: 1.0

References

CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)

Data

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

INFO

CDGM Glass Co., Ltd.

CDGM Glass Co., Ltd. is a leading optical glass supplier in China with a worldwile distribution network.

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