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Optical constants of BK7
N-BK7 (SCHOTT)

Wavelength: µm
 (0.3 – 2.5)  
 

Other optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{1.03961212λ^2}{λ^2-0.00600069867}+\frac{0.231792344λ^2}{λ^2-0.0200179144}+\frac{1.01046945λ^2}{λ^2-103.560653}$$

Comments

Refractive index is relative to air at standard conditions; Wavelength in dispersion formula is as measured in air and expressed in micrometers

Data

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

References

1) SCHOTT optical glass data sheets 2012-12-04
2) SCHOTT Zemax catalog 2012-12-04

More info - wiki

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 E-BK7
CDGM H-K9L
HOYA BSC7
SUMITA K-BK7
LZOS K8

External links