## Optix.eXpert

Optix.eXpert is our new website that aims at connecting optical professionals with employers looking to outsource optics related work. Sign up and post a listing now to start offering a service.

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

S-NSL3

Wavelength:
µm

(0.32 – 2.4)

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

n
k
LogX
LogY
eV

### Derived optical constants

### Dispersion formula

$$n^2-1=\frac{0.882514764λ^2}{λ^2-0.00464504582}+\frac{0.389271907λ^2}{λ^2-0.0200551397}+\frac{1.10693448λ^2}{λ^2-136.234339}$$### Conditions & Spec sheet

n_absolute: false wavelength_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -2.94e-06 1.06e-08 -3.57e-11 4.22e-07 5.7e-10 0.249 nd: 1.518229 Vd: 58.902057 glass_code: 518590 density: 2.48 g/cm^{3}thermal_expansion: - temperature_range: -30 70 °C coefficient: 9e-06 K^{-1}- temperature_range: 20 300 °C coefficient: 1.1e-05 K^{-1}dPgF: -0.0005 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