Optical constants of OHARA - NSL (Niobosilicate, low-index)
NSL7
Wavelength:
µm
(0.3–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.2524157-0.008626195λ^{2}+0.011155352λ^{-2}+0.00020721565λ^{-4}-2.6893015\text{×}10^{-07}λ^{-6}+3.8724966\text{×}10^{-08}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -1.541e-07 0.0 0.0 0.0 0.0 0.0 nd: 1.511121 Vd: 60.485793 glass_code: 511605 glass_status: preferred density: 2.49 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 9e-06 K-1 - temperature_range: 20 300 °C coefficient: 1.02e-05 K-1 acid_resistance: 1.0 phosphate_resistance: 1.0
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets