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20mm Uncoated, Fused Silica Penta Prism

Stock #49-018 Clearance 3-5 days
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Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Fused Silica (Corning 7980)
Surface Quality:
Penta Prism
Dimensional Tolerance (mm):
Angle Tolerance (arcmin):
Protective bevel as needed
Image Orientation:
Ray Deviation (°):
Wavelength Range (nm):
200 - 2200
Surface Flatness (P-V):

Regulatory Compliance

Certificate of Conformance:

Product Family Description

  • Ray Deviation of 90°
  • Right Handed Image
  • Optical Tool for Defining a Right Angle
  • Additional Penta Prism Options Available

Penta prisms are five-sided prisms featuring a ray deviation of 90° and a right handed image. The UV-AR coated options also have aluminized reflecting surfaces for increased efficiency. Slight movement of the prism does not affect the true right angle at which light rays are reflected, making a penta prism the ideal optical tool for defining a right angle in an optical system. TECHSPEC® UV Fused Silica Penta Prisms are made from UV fused silica which features low thermal expansion and excellent transmission throughout the UV, VIS, and NIR spectral ranges.

UV FS Transmission Curve
UV FS Transmission Curve

Technical Information


Stock No. A B
#49-016 5.00mm 6.10mm
#49-017 10.00mm 11.95mm
#49-018 20.00mm 21.65mm
#49-019 25.00mm 27.90mm