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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

18mm VIS 0° Coated Dove Prism

Stock #49-427
Qty 1-5
Qty 6+
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Height (mm):
Length (mm):
VIS 0° (425-675nm)
Angle Tolerance (arcmin):
Protective bevel as needed
Coating Specification:
Ravg ≤0.4% @ 425 - 675nm
Dimensional Tolerance (mm):
±0.13 Legs, ±0.25 Length
Image Orientation:
Ray Deviation (°):
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Flatness:
λ/8 (Entrance and Exit Faces)
Surface Quality:
Dove Prism
Typical Energy Density Limit:
5 J/cm2 @ 532nm, 10ns
Wavelength Range (nm):
425 - 675

Regulatory Compliance

RoHS 2015:
Reach 219:

Product Family Description

  • Image Rotation of 180°
  • Left Handed Image
  • Ideal for Rotation or Displaced Retroreflection

Dove prisms have an unusual and very interesting characteristic — if you look through the prism and rotate it around a longitudinal axis, the image rotates through twice the angle through which the dove prism itself rotates. For optimal peformance, use dove prisms with collimated light. The top surface of each TECHSPEC® Dove Prism is ground and the longest length (specified by dimension B) features an unbeveled sharp edge.

TECHSPEC® Dove Prisms are offered uncoated, with anti-reflection coated diagonal faces, or with aluminized diagonal faces. Aluminized dove prisms feature a protected aluminum coating with black Krylon paint on the diagonal faces and are ideal for displaced retroreflection. They provide a u-turn for incident laser beam light.

Reflection is displaced 49mm (in 15mm sizes) or 75mm (in 25mm sizes) when incident rays are centered on the diagonal face. Aluminized TECHSPEC® Dove Prisms can be used in imaging systems (with fields of view less than dimension A/ dimension C) to view areas behind the camera or around corners. They can also provide a split image, where one scene is displaced relative to the other.

Technical Information

Stock No. A B C D
#32-998 5.00mm 20.64mm 5.00mm 7.07mm
#32-999 10.0mm 43.56mm 10.0mm 14.14mm
#32-553 15.00mm 62.50mm 15.00mm 21.21mm
#49-427 18.00mm 76.10mm 18.00mm 25.45mm
#32-554 20.00mm 79.80mm 20.00mm 28.28mm
#45-403 25.00mm 103.18mm 25.00mm 35.36mm
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