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Optical constants of SCHOTT - PK (Phosphate crown)
N-PK52A

Wavelength: µm
 (0.29 – 2.5)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{1.029607λ^2}{λ^2-0.00516800155}+\frac{0.1880506λ^2}{λ^2-0.0166658798}+\frac{0.736488165λ^2}{λ^2-138.964129}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -1.97e-05 -5.5e-09 5.28e-12 3.6e-07 2.45e-10 0.172
nd: 1.497
Vd: 81.61
glass_code: 497816.370
glass_status: standard
density: 3.7 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 1.301e-05 K-1
  - temperature_range: 20 300 °C
    coefficient: 1.5e-05 K-1
dPgF: 0.0311
climatic_resistance: 1.0
stain_resistance: 0.0
acid_resistance: 52.3
alkali_resistance: 3.3
phosphate_resistance: 4.3

Comments

suitable for precision molding

References

SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets

Data

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

INFO

SCHOTT AG

SCHOTT AG is a German glass manufacturer. SCHOTT also publishes a glass catalog (SCHOTT Optical Glass Datasheets), which is a standard reference for the properties of many optical glasses.

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