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Optical Bk7 Zf5 Glass Achromatic Lens

20 Mar 2023

An achromatic lens is alens that is designed to limit the effects of chromatic and spherical aberration,and is corrected to bring two wavelengths (typically red and blue) into focus in the same plane.The most common type of achromat is the achromatic doublet, the commonly used materials are composed of flint glass and crown glass.

 specification:

Material BK7, Fused Silica,Ge,Si, CaF2.
Diameter 5-300mm
Surface Figure λ/2
Diameter Tolerance +0.01, -0.01 mm
Thickness Tolerance ±0.1 mm
Paraxial Focal Length ±2%
Centration <3 arc minutes
Clear Aperture >85%
Surface Quality 60-40 scratch and dig or better
Protective Bevel 0.25 mm x 45°
Coating:  Specified by customers 

CONTACT DETAILS
Changchun Yutai Optics Co., Ltd.
NO.1688
changshen road
qiche zone
Changchun
Jilin
130000
China
Tel: 86-431-87911611
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