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Optical wedge or Wedge prisms.

An optical wedge (wedge prism) is identical to an optical window except that the two plane surfaces are inclined with respect to each other at some specified angle. Common names for a wedge include wedged window and thick or thin prisms. Used as a wedged window, an optical wedge can control the direction of back-reflected light at each surface.

Alkor Technologies provide optical wedge made out of BK7, Fused Silica, BaF2, KBr, Silicon, Germanium and ZnSe according customer's specifications. We can make any angle. Please contact us for quotation.

1. BaF2 wedge

Cat # Diameter Center thickness
in mm in mm
BF-ww-12.7-2 0.5 12.7 0.079 2.0
BF-ww-25.4-4 1.0 25.4 0.157 4.0
BF-ww-38.1-5 1.5 38.1 0.197 5.0
BF-ww-50.8-6 2.0 50.8 0.236 6.0
Any other custom wedges are available upon request

2. CaF2 wedge

Cat # Diameter Center thickness
in mm in mm
CF-ww-12.7-2 0.5 12.7 0.079 2.0
CF-ww-25.4-4 1.0 25.4 0.157 4.0
CF-ww-38.1-5 1.5 38.1 0.197 5.0
CF-ww-50.8-6 2.0 50.8 0.236 6.0
Any other custom wedges are available upon request

3. Germanium wedge

Cat # Diameter Center thickness
in mm in mm
GE-ww-12.7-2 0.5 12.7 0.079 2.0
GE-ww-25.4-4 1.0 25.4 0.157 4.0
GE-ww-38.1-5 1.5 38.1 0.197 5.0
GE-ww-50.8-6 2.0 50.8 0.236 6.0
Any other custom wedges are available upon request

4. MgF2 wedge

Cat # Diameter Center thickness
in mm in mm
MF-ww-12.7-2 0.5 12.7 0.079 2.0
MF-ww-25.4-4 1.0 25.4 0.157 4.0
MF-ww-38.1-5 1.5 38.1 0.197 5.0
Any other custom wedges are available upon request

5. Silicon wedge  

Cat # Diameter Center thickness
in mm in mm
Si-ww-12.7-2 0.5 12.7 0.079 2.0
Si-ww-25.4-4 1.0 25.4 0.157 4.0
Si-ww-38.1-5 1.5 38.1 0.197 5.0
Si-ww-50.8-6 2.0 50.8 0.236 6.0
Any other custom wedges are available upon request

Standard specifications
Diameter tolerance +0/-0.1mm Angle 30+/-15min or any other angle by request
Thickness tolerance +/-0.1mm Flatness 2 waves per inch at 633nm
Clear Aperture 85% Surface finish 60/40

See also: optical lenses, optical prisms