Optical constants of HIKARI - BK (Borosilicate crown)
E-BK7
Wavelength:
µm
(0.280–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.271192-0.00966126763λ^{2}+0.0110306969λ^{-2}+7.00379964\text{×}10^{-05}λ^{-4}+1.39658544\text{×}10^{-05}λ^{-6}-7.62560454\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 23.0 °C nd: 1.516800 Vd: 64.108694 glass_code: 517641 glass_status: preferred density: 2.51 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 8.8e-06 K-1 dPgF: -0.0011
References
NIKON Zemax catalog 2017-11 (obtained from http://www.nikon.com)
See also HIKARI glass data sheets
Data
INFO
BK7 optical glass
BK7 is a very popular crown glass. Most glass makers produce this glass under slightly different names.Analogs of BK7 glass produced by different makers
Maker | Glass |
---|---|
SCHOTT | N-BK7 |
OHARA | S-BSL7 |
HIKARI | J-BK7A |
CDGM | H-K9L |
HOYA | BSC7 |
SUMITA | K-BK7 |
LZOS | K8 |
External links
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