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Optical constants of HOYA - LaC (Lanthanum crown)
LAC12

Wavelength: µm
 (0.300–1.550)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula

$$n^2=2.7634844-0.011068339λ^{2}+0.018246442λ^{-2}+0.00037697356λ^{-4}-1.7788655\text{×}10^{-05}λ^{-6}+1.5314262\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -1.10512e-06 0.0 0.0 0.0 0.0 0.0
nd: 1.67790
Vd: 55.52
glass_code: 678555
glass_status: special
density: 3.8 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 7.7e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 9e-06 K-1
dPgF: -0.0031
climatic_resistance: 3.0
stain_resistance: 5.0
acid_resistance: 4.0

Comments

Not in a position to accept new order because of discontinuation.

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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