Optical constants of OHARA - NSL (Niobosilicate, low-index)
NSL2
Wavelength:
µm
(0.340–0.9)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.264123-0.008475121λ^{2}+0.01223501λ^{-2}+0.0001944071λ^{-4}+3.353212\text{×}10^{-07}λ^{-6}+3.831994\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 3.4466e-06 0.0 0.0 0.0 0.0 0.0 nd: 1.516016 Vd: 56.800755 glass_code: 516568 glass_status: preferred density: 2.59 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 7.6e-06 K-1 - temperature_range: 20 300 °C coefficient: 9e-06 K-1 dPgF: -0.0033
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets