Aspherical lenses
Aspheric lenses are any lenses whose surface angles and profiles are neither part of a sphere nor part of a cylinder. Conventional or non-asphericlenses have the same curve across their entire surface, like a ping-pong ball.Asphericlenses accomplish the same amount of refraction but are flatter and slimmer.

Material:                        BK7 Optical glasses,Fused Silica

Diameter Tolerance:     +0.0/-0.02mm

Thickness Tolerance:    ± 0.01mm

Surface Accuracy:        λ/4 @632.8nm

Surface Quality:           40-20

Clear Aperture:            > 90%

Bevel:                          0.2mm×45°

Coating:                      user-defined