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Penta  Prisms
Standard Penta Prisms  
High Precision Penta Prisms  
Nonstandard Penta Prisms  
Penta Prisms change the direction of an incident beam by 90 without inverting or reversing it; they are insensitive to angle of incidence and alignment.

In order to be effective, two faces of the prism must have a reflective coating; we coat our prisms with a metallic or dielectric coating. The standard Penta Prism reflecting surfaces are coated with aluminum or enhanced aluminum. Sometimes, reflecting coating surfaces are with black painting, and we coat the entrance and exit faces with an anti-reflection coating from 630 to 680nm.

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Penta Prisms