Aspherical lenses have a more complex surface different from sphercial lens.It's employed to correct sphercial and optical aberration.For imaging applications,It reduce or eliminate distortion at wide angles.As a replacement of complex multi-lens system,this kind of lenses are smaller,lighter and mostly cheaper.The aspherical lens is wide-ranging used in Magnifier,LED lens,Glasses,DVD pick up,Zoom lens,high power laser collimator,astronomical telescopy and other various applications.

 
Specifications:
Material: BK7 grade A optical glass,Fused Silica,sapphire,znse
Dimension Tolerance: +/-0.2mm
Centration: 3 arc minutes
Irregularity:lambda/4
Surface Figure: x: lambda/4; y: lambda/2
Clear Aperture: >85% of diameter
Bevel: 0.25mmx45deg
Coating:Upon requirement
Center thickness:0.8-200mm+/-0.01mm
Radius tolerance+/-0.3%