Optical constants of OHARA - NSL (Niobosilicate, low-index)
NSL36
Wavelength:
µm
(0.340–0.9)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.266208-0.008895249λ^{2}+0.01260385λ^{-2}+0.0003758541λ^{-4}-1.385868\text{×}10^{-05}λ^{-6}+1.28332\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 8.9983e-07 0.0 0.0 0.0 0.0 0.0
nd: 1.517417
Vd: 52.412251
glass_code: 517524
glass_status: preferred
density: 2.66 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.6e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.7e-06 K-1
dPgF: -0.002
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets