Achromatic Lens
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.
Specifications:
Materials:two different optical glass
Diameter:1.5—300mm
Diameter Tolerance:+/-0.02 mm
Thickness Tolerance:0+/-0.02mm
Centring Error<3 Arc minute
Surface Quality:20—10
Surface Figure:λ/10@633nm
Clear Aperture:90%
Coating: Specified by customers
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