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Optical constants of HIKARI - LaK (Lanthanum crown)
J-LASKH2

Wavelength: µm
 (0.280 – 2.400)  
 

Other optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.01618042-0.0139280117λ^{2}-0.000204284446λ^{4}+0.0227027519λ^{-2}+0.000317846393λ^{-4}+1.01400049\text{×}10^{-05}λ^{-6}+3.63521536\text{×}10^{-08}λ^{-8}$$

Data

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

Additional information

n_is_absolute: false
λ_is_vacuum: false
temperature: 23.0 °C
n_d: 1.755000
V_d: 52.336325
density: 4.29 g/cm3
coefficient_of_thermal_expansion_1: 6.1e-06 K-1
ΔP_gF: -0.009
phosphate_resistance: 2.0

References

1) HIKARI optical glass catalog 2015-04-01
2) HIKARI Zemax catalog

More info - wiki

Hikari Glass Co., Ltd. is a Japanese glass maker, a subsidiary of Nikon Corp.

External links

Latest optical glass catalog