Optical constants of OHARA - FTM
S-FTM16
Wavelength:
µm
(0.35–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.32940907λ^2}{λ^2-0.0102377287}+\frac{0.141512125λ^2}{λ^2-0.0578081956}+\frac{1.44299068λ^2}{λ^2-150.597139}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -5.29e-06 1.4e-08 -4.19e-11 6.9e-07 8.13e-10 0.287
nd: 1.592701
Vd: 35.310075
glass_code: 593353
density: 2.64 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 9e-06 K-1
- temperature_range: 20 300 °C
coefficient: 1e-05 K-1
dPgF: 0.009
climatic_resistance: 1.0
acid_resistance: 1.0
phosphate_resistance: 2.0
Comments
Recommended
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets