Optical constants of SCHOTT - PK (Phosphate crown)
N-PK52A
Wavelength:
µm
(0.29–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.029607λ^2}{λ^2-0.00516800155}+\frac{0.1880506λ^2}{λ^2-0.0166658798}+\frac{0.736488165λ^2}{λ^2-138.964129}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_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