Optical constants of HIKARI - LaK (Lanthanum crown)
Q-LAK13S
Wavelength:
µm
(0.280 – 2.400)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2=2.82409056-0.0116215301λ^{2}-0.000136188911λ^{4}+0.0199712048λ^{-2}+0.000284067118λ^{-4}+7.76179707\text{×}10^{-06}λ^{-6}+6.22423374\text{×}10^{-08}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 23.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 2.4813e-06 1.5502e-08 -1.8528e-12 8.5107e-07 7.0734e-10 0.17132
nd: 1.697200
Vd: 53.288704
glass_status: preferred
density: 3.74 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.1e-06 K-1
dPgF: -0.0067
phosphate_resistance: 4.0
Comments
For mold lens
References
NIKON Zemax catalog 2017-11 (obtained from http://www.nikon.com)
See also HIKARI glass data sheets
Data
INFO
Hikari Glass Co., Ltd.
Hikari Glass Co., Ltd. is a Japanese glass maker, a subsidiary of Nikon Corp.External links
- Hikari Glass Co., Ltd. (in Japanese)
- Nikon