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Optical constants of CDGM - QK (Light crown)
H-QK1

Wavelength: µm
 (0.280–2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{0.841944073λ^2}{λ^2-93.2638704}+\frac{0.991785467λ^2}{λ^2-0.0103998728}+\frac{0.146213376λ^2}{λ^2+0.00820300741}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -4.33e-06 2.75e-08 -4.55e-11 2.96e-07 -7.4e-10 0.257
nd: 1.470470
Vd: 66.876032
glass_code: 470669
density: 2.3 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 7.3e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 8.5e-06 K-1
dPgF: 0.0005
climatic_resistance: 3.0

References

CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets

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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