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## Optical constants of OHARA - TIM (Titanate, medium-index)

S-TIM5

Wavelength:
µm

(0.36 – 2.4)

### Complex refractive index (*n+ik)*

n
k
LogX
LogY
eV

### Derived optical constants

### Dispersion formula

$$n^2-1=\frac{1.38531342λ^2}{λ^2-0.0104074567}+\frac{0.122372945λ^2}{λ^2-0.0557440088}+\frac{1.40508326λ^2}{λ^2-144.878733}$$### Conditions & Spec sheet

n_absolute: false wavelength_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -4.74e-07 1.38e-08 -3.81e-11 7.33e-07 9.25e-10 0.264 nd: 1.603420 Vd: 38.027347 glass_code: 603380 density: 2.63 g/cm^{3}thermal_expansion: - temperature_range: -30 70 °C coefficient: 8.3e-06 K^{-1}- temperature_range: 20 300 °C coefficient: 9.6e-06 K^{-1}dPgF: 0.0036 climatic_resistance: 1.0 acid_resistance: 1.0 phosphate_resistance: 1.2

### Comments

Recommended - Lightweight

### References

OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)

See also OHARA glass data sheets