Telecom Optics

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Right Angle Prisms

Product Description

Hobbite® Telecom Optics (Right Angle Prisms)

The right angle prisms are often preferable to an inclined mirror in applications involving severe acoustic
or inertial loads, because they are easier to mount, and deform much less than mirror in response to
external mechanical stress. As long as acceptance angle limitations for TIR from the roof faces are not
exceeded, the right angle prisms can serve as a retro reflector, turning beams back to the original direction.

Right-angle prism is the most common type of prisms. It is used to re-direct a beam of light at 90 degrees
from the the incident direction or used as a 180 beam retro-reflector. They are often coated with various
optical coatings to form cubic beam splitters and color separation cubes used in various projection systems.


Material BK7, UVFS
Dimensional tolerances ±0.01mm
Clear aperture  ≥95%@central area
90˚ angle tolerance ±2 arcmin (General type)
±5 arcsec (Precision type)
Pyramidal tolerance ±1 arcmin (General type)
±30 arcsec (Precision type)
Surface quality 40-20 S-D
Surface flatness <λ/4 @ 632.8 nm
Protective chamfers <0.25 mm x 45°
Coatings Call us


You can customise this product to your needs. If you do not find suitable specifications for your application
please contact us for custom solution.

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Example:  0.5*0.5*0.5mm ARcoating…



  • Can work as internal or external reflectors or as retroreflectors