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Optical constants of HIKARI - LaF (Lanthanum flint)
J-LAF2

Wavelength: µm
 (0.340 – 2.400)  
 

Other optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.96796358-0.0119454184λ^{2}-0.000121022641λ^{4}+0.0250950364λ^{-2}+0.00059199783λ^{-4}-3.88364981\text{×}10^{-06}λ^{-6}+2.08885425\text{×}10^{-06}λ^{-8}$$

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: 1.744000
V_d: 44.804167
density: 4.16 g/cm3
coefficient_of_thermal_expansion_1: 5.8e-06 K-1
ΔP_gF: -0.0056
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