Optical constants of OHARA - TPH
TPH55
Wavelength:
µm
(0.3–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.9569821-0.013856476λ^{2}+0.037265687λ^{-2}+0.0029140249λ^{-4}-0.00020079792λ^{-6}+2.945722\text{×}10^{-05}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 25.0 °C
nd: 1.755502
Vd: 25.066156
glass_code: 756251
glass_status: preferred
density: 3.06 g/cm3
thermal_expansion:
- temperature_range: 20 300 °C
coefficient: 9.4e-06 K-1
dPgF: 0.0197
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets