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Optical constants of HOYA - LaC (Lanthanum crown)
LAC8

Wavelength: µm
 (0.280 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.8778537-0.013832906λ^{2}+0.020301185λ^{-2}+0.00027759871λ^{-4}+5.905983\text{×}10^{-06}λ^{-6}+1.7747647\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: 4.58776e-06 0.0 0.0 0.0 0.0 0.0
n_d: 1.71300
V_d: 53.94
glass_code: 713539
glass_status: standard
density: 3.81 g/cm3
coefficient_of_thermal_expansion_1: 5.9e-06 K-1
coefficient_of_thermal_expansion_2: 7.2e-06 K-1
ΔP_gF: -0.007
climatic_resistance: 1.0
stain_resistance: 3.0
acid_resistance: 4.0

Comments

Recommended glass type

References

HOYA Zemax catalog 2017-04-01 (obtained from http://www.hoya-opticalworld.com)

Data

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

INFO

HOYA Corporation

Hoya Corporation is a Japanese company manufacturing optical products.

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