Optical constants of SCHOTT - BK (Borosilicate crown)
P-BK7
Wavelength:
µm
(0.31–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.18318503λ^2}{λ^2-0.00722141956}+\frac{0.0871756426λ^2}{λ^2-0.0268216805}+\frac{1.03133701λ^2}{λ^2-101.702362}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
nd: 1.5164
Vd: 64.06
glass_code: 516641.243
glass_status: standard
density: 2.433 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.99e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.32e-06 K-1
dPgF: -0.0025
climatic_resistance: 1.0
stain_resistance: 0.0
acid_resistance: 1.0
alkali_resistance: 2.3
phosphate_resistance: 2.3
Comments
suitable for precision molding
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets