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Optical constants of HOYA - LaC (Lanthanum crown)
LAC7

Wavelength: µm
 (0.290 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.6876223-0.014375187λ^{2}+0.012545954λ^{-2}+0.0014642295λ^{-4}-0.00016982461λ^{-6}+8.8048639\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 9.52599e-07 0.0 0.0 0.0 0.0 0.0
nd: 1.65160
Vd: 58.40
glass_code: 652584
glass_status: special
density: 3.62 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.9e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.3e-06 K-1
dPgF: -0.0035
climatic_resistance: 4.0
acid_resistance: 5.0

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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