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Optical constants of HIKARI - LaK (Lanthanum crown)
J-LAK10

Wavelength: µm
 (0.300 – 2.400)  
 

Other optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.89571408-0.0120013315λ^{2}-0.000136916169λ^{4}+0.0219522159λ^{-2}+0.000357973143λ^{-4}+8.26304425\text{×}10^{-06}λ^{-6}+2.7388172\text{×}10^{-07}λ^{-8}$$

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: 1.719990
V_d: 50.267183
density: 3.74 g/cm3
coefficient_of_thermal_expansion_1: 6.5e-06 K-1
ΔP_gF: 0.0016
phosphate_resistance: 3.0

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