Optical constants of HIKARI - LaK (Lanthanum crown)
J-LAK7
Wavelength:
µm
(0.280 – 2.400)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2=2.6823272-0.0119713031λ^{2}-0.00014372436λ^{4}+0.0164555463λ^{-2}+0.000217295781λ^{-4}+4.69383509\text{×}10^{-06}λ^{-6}+3.49394854\text{×}10^{-08}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 23.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -5.9728e-08 1.1901e-08 -5.8374e-13 5.2507e-07 5.712e-10 0.13665
nd: 1.651600
Vd: 58.571700
density: 3.3 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.6e-06 K-1
dPgF: -0.0045
phosphate_resistance: 4.0
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