Optical constants of SCHOTT - K (Crown)
K7
Wavelength:
µm
(0.31–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.1273555λ^2}{λ^2-0.00720341707}+\frac{0.124412303λ^2}{λ^2-0.0269835916}+\frac{0.827100531λ^2}{λ^2-100.384588}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.67e-06 8.8e-09 -2.86e-11 5.42e-07 7.81e-10 0.172
nd: 1.51112
Vd: 60.41
glass_code: 511604.253
glass_status: standard
density: 2.53 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8.4e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.7e-06 K-1
climatic_resistance: 3.0
stain_resistance: 0.0
acid_resistance: 2.0
alkali_resistance: 1.0
phosphate_resistance: 2.3
Comments
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets