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Optical constants of CDGM - ZPK (Dense phosphate crown)
D-ZPK7-25

Wavelength: µm
 (0.280 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{0.71411271λ^2}{λ^2-0.0133604289}+\frac{0.713400795λ^2}{λ^2-0.0028939123}+\frac{0.765480668λ^2}{λ^2-134.125223}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -2.47e-05 -2.21e-09 5.2e-12 4.58e-07 5.69e-10 0.082
nd: 1.568540
Vd: 71.235367
glass_code: 569712
density: 4.36 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 1.33e-05 K-1
  - temperature_range: 20 300 ℃
    coefficient: 1.58e-05 K-1
dPgF: 0.0199
climatic_resistance: 1.0

Comments

anneal rate:25℃/h

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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