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Penta Prism

Pentaprism is a polyhedral prism with a special optical structure, consisting of two refractive surfaces at a 90° angle and two reflective surfaces at a 45° angle. Light is incident vertically from any 90° plane, undergoes two reflections (non total reflection), and exits from another 90° plane to achieve precise 90° deflection. Specific applications include DSLR camera viewfinder, laser level, rangefinder, high-voltage tower vertical detection, cable conduit calibration, laser cutting/welding equipment optical path adjustment, semiconductor wafer positioning, conveyor belt object detection, etc.

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Specification of Penta Prism


Material

N-BK7

Diameter Tolerance

±0.1mm

Angular Tolerance

≤2''

Flatness

λ/4 @ 632.8nm

Surface Quality

40/20

Clear Aperture

>85%

Bevel

<0.25mm X 45°

Coating

S1&S2-Single layer MgF2 coating

S3&S4

Aluminized and painted black

Dimension(mm)

7x5, 7x6, 10x10, 15x15, 20x20, 30x30


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