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Optical constants of CDGM - ZPK (Dense phosphate crown)
D-ZPK1A

Wavelength: µm
 (0.300 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.5865056-0.00836488456λ^{2}+0.014712994λ^{-2}+6.50980579\text{×}10^{-05}λ^{-4}+2.0373089\text{×}10^{-05}λ^{-6}-9.57408813\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -1.22e-05 9.71e-09 -6.2e-11 2.18e-07 2.15e-10 0.311
nd: 1.620867
Vd: 63.876075
glass_code: 621638
density: 3.69 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 1.05e-05 K-1
  - temperature_range: 20 300 °C
    coefficient: 1.28e-05 K-1
dPgF: 0.0048

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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