Optical constants of OHARA - FPL (Fluorophosphate, low-index)
S-FPL51
Wavelength:
µm
(0.28–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.17010505λ^2}{λ^2-0.00616203924}+\frac{0.0475710783λ^2}{λ^2-0.0263372876}+\frac{0.763832445λ^2}{λ^2-141.882642}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.91e-05 -4.44e-09 -4.62e-11 3.74e-07 4.39e-10 0.163
nd: 1.496999
Vd: 81.545888
glass_code: 497816
density: 3.62 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 1.31e-05 K-1
- temperature_range: 20 300 °C
coefficient: 1.55e-05 K-1
dPgF: 0.028
climatic_resistance: 1.0
acid_resistance: 52.1
phosphate_resistance: 4.0
Comments
Recommended - The unique relative partial dispersion.
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets