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STANDA in Lithuania
STANDA  P.O. Box 2684, 03001 Vilnius, Lithuania
Phone +370 5 2651474, Fax +370 5 2651483
E-mail: sales@standa.LT
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Home > Prisms > 14PP - Penta Prisms
Penta Prisms
High precision
Custom size available
Various dielectric coatings can be deposited upon request

Penta prism's function is to deviate the direction of the light beam by 90 degrees. Penta prism will neither invert nor reverse the image. Penta prisms are extremely useful in alignment systems as they define a right angle very precisely and independently of angle of incidence. Rays entering one face emerge from the adjacent face at precisely 90 deg after they have undergone two reflections inside the prism for a total of 270 deg. The penta prism acts as a turning mirror which is insensitive to alignment.

Standard Specifications
Dimension Tolerances+0.0, -0.2 mm
Surface Flatness<λ/4 @ 632.8 nm
Surface Quality40-20 scratch & dig
90° Deviation Tolerance< 30 arcsec (down to 5 arcsec available!)
  BK7 Penta Prisms
Dimensions A x B, mmCoatingOrdering Code
7.0 x 7.0Uncoated14PP-1
12.7 x 12.7Uncoated14PP-2
25.4 x 25.4Uncoated14PP-3