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12° Nom. 12.5mm Dia. Uncoated, N-BK7 Wedge Prism

Stock #35-741
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Qty 1-5
Qty 6+
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Angle Tolerance (arcsec):
Protective bevel as needed
Coefficient of Thermal Expansion CTE (10-6/°C):
Design Wavelength DWL (nm):
Diameter (mm):
12.50 +0.00/-0.10
Edge Thickness ET (mm):
Image Orientation:
Beam Deviation
Power (diopters):
Ray Deviation @ 633nm (°):
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Flatness (P-V):
Surface Quality:
Thickness (mm):
Wedge Prism
Wavelength Range (nm):
350 - 2200
Wedge Angle:
21° 10'

Regulatory Compliance

RoHS 2015:
Reach 219:
Certificate of Conformance:

Product Family Description

  • Ideal for Beam Steering
  • 0.5° - 15° Beam Deviation Options
  • Available Uncoated or Anti-Reflection Coated
  • Anamorphic Prism Pair Also Available

Wedge prisms can be used individually to deviate a laser beam a set angle, or two wedge prisms can be used together for beam steering applications. A single wedge prism's ability to deviate the angle of an incident beam is measured in Diopters with 1 diopter deviating the beam 1cm at a 1m working distance.

Two wedge prisms can be used as an anamorphic pair for beam shaping (to correct the elliptical shape of diode outputs). Or, a pair of wedge prisms can steer a beam anywhere within a circle described by the full angle 4θ, where θ is the deviation from a single prism. This beam steering is accomplished by rotating the two wedge prisms independently of each other, and is typically used to scan a beam to different locations in imaging applications.

Note: Beam deviation is shown in degrees and diopters. One diopter is 1cm of deviation at a distance of 1m from the prism.

Laser Optics

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