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Optical constants of OHARA - TIM (Titanate, medium-index)
S-TIM28
Wavelength:
µm
(0.36 – 2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.5427081λ^2}{λ^2-0.0113925005}+\frac{0.217113891λ^2}{λ^2-0.0579224572}+\frac{1.81904459λ^2}{λ^2-167.697189}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.08e-06 1.07e-08 -3.65e-11 7.81e-07 1.09e-09 0.291
nd: 1.688931
Vd: 31.075450
glass_code: 689311
density: 2.98 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8.2e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.8e-06 K-1
dPgF: 0.0092
climatic_resistance: 1.0
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