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Optical constants of OHARA - TIL (Titanate, low-index)
S-TIL27
Wavelength:
µm
(0.35 – 2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.31433154λ^2}{λ^2-0.00950404477}+\frac{0.112300168λ^2}{λ^2-0.0524112772}+\frac{1.413901λ^2}{λ^2-148.429972}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 1.72e-06 1.09e-08 -4.25e-11 5.94e-07 5.57e-10 0.276
nd: 1.575006
Vd: 41.505207
glass_code: 575415
density: 2.58 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.4e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.9e-06 K-1
dPgF: 0.0024
climatic_resistance: 2.0
acid_resistance: 1.0
phosphate_resistance: 1.0
Comments
Recommended - Lightweight
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets