Right-Angle Prism

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Right-Angle Prism

These prisms are used to direct beams at 90 degrees by using hypotenuse face in total internal reflection (TIR).

Clear Aperture, %	>80%
90 deg Angle Tolerance, arcmin	±2 (general type); ±0.1 (precision type)
Dimension Tolerances, mm	+0/-0.2
Protective chamfers	<0.25 mm x 45°
Pyramidal tolerance, arcmin	±1 (general type); ±0.5 (precision type)
Surface Flatness	λ/4 @ 633 nm
Surface Quality, S-D	40/20 S/D

Description

Details

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.

Features

Can work as internal or external reflectors or as retroreflectors

Name	Angle Tolerance, arcmin	Dimensions, mm	Material	Price	Quantity
1-PR-1-0127	General type	12.7 x 12.7 x 12.7	BK7	US$23.00
1-PR-1-0200	General type	20.0 x 20.0 x 20.0	BK7	US$38.00
1-PR-1-0254	General type	25.4 x 25.4 x 25.4	BK7	US$46.00
1-PR-2-0127	General type	12.7 x 12.7 x 12.7	UVFS	US$41.00
1-PR-2-0200	General type	20.0 x 20.0 x 20.0	UVFS	US$66.00
1-PR-2-0254	General type	25.4 x 25.4 x 25.4	UVFS	US$84.00
1-PR-2-1127	Precision type	12.7 x 12.7 x 12.7	UVFS	US$75.00
1-PR-2-1200	Precision type	20.0 x 20.0 x 20.0	UVFS	US$130.00
1-PR-2-1254	Precision type	25.4 x 25.4 x 25.4	UVFS	US$131.00