Optical constants of OHARA - FTL
FTL10
Wavelength:
µm
(0.365–0.9)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.222325-0.008576053λ^{2}+0.0109677λ^{-2}+0.0004169366λ^{-4}-2.746341\text{×}10^{-05}λ^{-6}+2.170253\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -5.4465e-06 0.0 0.0 0.0 0.0 0.0
nd: 1.501372
Vd: 56.399833
glass_code: 501564
glass_status: preferred
density: 2.53 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 9.2e-06 K-1
- temperature_range: 20 300 °C
coefficient: 1.04e-05 K-1
dPgF: 0.0035
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets