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penta optical prism

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Product description:

Penta Prism is a five-sided prism containing two reflecting surfaces at 45° to each other, and two refracting faces perpendicular to the entering and emerging beams.

Penta prism can deviate an incident beam without inverting or reversing to 90°.The deviation angle of 90° is independent of any rotation of the prism about an axis parallel to the line of intersection of the two reflecting faces. It is commonly used in Plumb Level, Surveying, Alignment, Range finding and Optical Tooling. The reflecting surfaces of this Prism must be coated with a metallic or dielectric coating. The standard Penta Prism reflecting surfaces are coated with aluminum or enhanced aluminum.

Standard Precision Penta Prism

Material:------------------------- N-BK7 Grade A optical glass 
Dimension Tolerance:--------±0.2mm 
90° Deviation Tolerance:---according to the table 
Flatness: ------------------------ l/2(Standard), l/4(High Precision)@633nm 
Reflectivity:--------------------- R > 95% per face @400-700 nm 
Surface Quality: --------------60-40 scratch and dig 
Coating on input and output sides:-------Uncoated

tandard Precision Penta Prism

Material:------------------------- N-BK7 Grade A optical glass 
Dimension Tolerance:--------±0.2mm 
90° Deviation Tolerance:---according to the table 
Flatness: ------------------------ l/2(Standard), l/4(High Precision)@633nm 
Reflectivity:--------------------- R > 95% per face @400-700 nm 
Surface Quality: --------------60-40 scratch and dig 
Coating on input and output sides:-------Uncoated

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