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  • Penta Prism
Aug 2004
Photop Technologies Inc.Request Info
Low Price, Ultrahigh Precision
FUZHOU, China, Aug. 10 -- Optics supplier Photop Optics Co. Ltd., a subsidiary of Photop Technologies Inc., has introduced an ultralow-cost, high-precision penta prism.
The prism has a 90-degree beam deviation that does not invert or reverse the image without precise alignment of the prism with respect to the incoming beam or image. The company said it is a widely measurement device in the construction industry.
   Photop Optics' penta prism features a high angle deviation that can reach 10 seconds and even less than 5 seconds for specified products. Photop Optics guarantees excellent performance and consistency for its penta prism, at a very competitive price.

For more information, visit:; e-mail:

Photop Optics Co. Ltd.
7 Jinzhou North Road P.O.Box 206
Fuzhou,Fujian 350002 China
Phone: +86-591-8385-9505
Fax: +86-591-8385-9650

Photop USA
Retail Sales
21949 Plummer Street
Chatsworth, CA 91311
Phone: (818) 678-1999
Fax: (818) 885-6926


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penta prism
A five-sided prism containing two reflecting surfaces at 45° to each other, and two refracting faces perpendicular to the entering and emerging beams. 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 as an end-mirror in a rangefinder and as an "optical square'' in surveying and alignment machinery.  
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