Wedge window (Wedge prism)
Wedge window (Wedge prism) is a wedge shaped piece of glass which refracts light rays, thus establishing a critical angle. By selecting the appropriate wedge it is simple to create a precise beam deviation without affecting other beam parameters. If two wedges are used together with the sloping surfaces in close proximity it is possible to produce a continuous variation of beam deviation by counter - rotating the wedges.
Material: BK7 and Fused silica typically. Other optical materials are also available.
Diameter Tolerance: +0.0, -0.1mm
Thickness Tolerance: +/- 0.2mm
Clear Aperture: >85%
Wedge angle: By request
Wedge angle tolerance: +/-3'
Surface Quality: 40-20 scratch and dig
Flatness: l/4 @632.8nm
Protective Bevel
AR coating is available by request.
R<0.2%@single wavelength
Ravg<0.5%@broadband wavelength range

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