Spherical Lens Jan 9, 2008

Protruding lens can assemble input wave. Focus is positive and makes two images, a real and virtual, a focused and a enlarged images. Concave lens can disperse wave. Focus is negative and makes a virtual image.

Diameter(mm) Tc(mm) R(mm) Surface Figure（λ=632.8nm）surface Quality

12.7 3 28.34 λ/4 40/20
25.4 3 51.83 λ/4 40/20
50.8 5 89.23 λ/4 40/20
76.2 6 182.56 λ/2 40/20

SPECIFICATIONS:

Material Ge, Si, ZnS, ZnSe
Diameter Tolerance +0.0/-0.1mm
Central Thickness Tolerance ±0.1mm
Clear Aperture ≥90% Diameter
Centration ≤3 Arc Min
Focal Length Tolerance ±1%
Bevel 0.2mmx45º

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