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## Optical constants of OHARA - NSL (Niobosilicate, low-index)

S-NSL36

Wavelength:
µm

(0.34 – 2.4)

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

n
k
LogX
LogY
eV

### Derived optical constants

### Dispersion formula

$$n^2-1=\frac{1.09666153λ^2}{λ^2-0.00667491123}+\frac{0.168990073λ^2}{λ^2-0.033609545}+\frac{1.20580827λ^2}{λ^2-141.668738}$$### Conditions & Spec sheet

n_absolute: false wavelength_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 6.73e-07 1.17e-08 -4.11e-11 5.17e-07 5.13e-10 0.241 nd: 1.517417 Vd: 52.430903 glass_code: 517524 density: 2.46 g/cm^{3}thermal_expansion: - temperature_range: -30 70 °C coefficient: 8e-06 K^{-1}- temperature_range: 20 300 °C coefficient: 9.3e-06 K^{-1}dPgF: -0.0002 climatic_resistance: 1.0 acid_resistance: 1.0 phosphate_resistance: 1.0

### Comments

Recommended

### References

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

See also OHARA glass data sheets