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

Half-Penta Prisms

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  • Deviates Line of Sight by 45°
  • Combine with Schmidt Prism to Create Schmidt-Pechan Prism
  • Penta Prisms Also Available

Half-Penta prisms are used to deviate the line of sight by 45° without inverting or reverting the image. The reflecting surface is aluminized and over-coated with Inconel and black paint to increase efficiency. Combining a TECHSPEC® Half-Penta Prism with a corresponding size TECHSPEC® Schmidt Prism creates a Pechan prism pair. The Pechan prism pair will invert or revert the image while not deviating the line of sight. It can be used with converging or diverging light for system size reduction.

Common Specifications

Dimensional Tolerance (mm):
±0.10
Bevel:
Protective bevel as needed
Coating:
VIS 0° & Aluminized
Substrate:
Surface Quality:
40-20
Angle Tolerance (arcmin):
±3
Image Orientation:
Right-Handed
Coating Specification:
Entrance/Exit Faces: Ravg ≤0.4% @ 425 - 675nm
Reflecting Surface: Ravg >85% @ 400 - 700nm w/Black Overpaint
Ray Deviation (°):
45
Wavelength Range (nm):
425 - 675
Power (fringes) @ 632.8nm:
1.00
Irregularity (fringes) @ 632.8nm:
0.25

Products

 Width (mm)   Height (mm)   Coating   Wavelength Range (nm)   Compare   Stock Number   Price  Buy
10.00 14.14 VIS 0° & Aluminized 425 - 675
25.00 35.35 VIS 0° & Aluminized 425 - 675

Technical Information

Half-Penta Prism Tunnel Diagram
Half-Penta Prism Tunnel Diagram
Dimensions
Stock No. A B C D
#65-587 10.00mm 10.82mm 2.07mm 14.14mm
#65-590 25.00mm 27.06mm 5.18mm 35.35mm

Custom

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

  • Custom dimensions, materials, coatings, and more
  • High-precision surface quality and flatness
  • Tight tolerances and complex geometries
  • Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.

 
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