Optical constants of HIKARI - LaK (Lanthanum crown)
Q-LAK52S
Wavelength:
µm
(0.280–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.76405609-0.0126400636λ^{2}-0.000160322951λ^{4}+0.0184903089λ^{-2}+0.000267778201λ^{-4}+5.29803264\text{×}10^{-06}λ^{-6}+1.21335917\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 23.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 4.069e-06 1.2323e-08 -1.158e-12 5.3706e-07 5.061e-10 0.17754
nd: 1.677980
Vd: 54.893431
density: 3.55 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.9e-06 K-1
dPgF: -0.0074
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