Penta Prisms

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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.

Micro Penta Prism

Main Specifications
Material BK7 Grade A optical glass or Fused Silica
Dimension Tolerance 0.2mm
90 Deviation Tolerance Standard series: < 30 arc seconds
Precision series: <10 arc seconds
NEW Super precision series: <3 arc seconds
Flatness Standard series: l/2 at 632.8 nm
Precision series: 
l/4 at 632.8 nm
Reflectivity R > 95% per face from 630 to 680 nm
Surface Quality 60-40 scratch and dig

Standard Products
A x h (mm)

Material

3 min. 
deviation

1 min. deviation

30 sec. deviation

7 x 6

BK7

RPP101

RPP201

RPP301

8 x 8

BK7

RPP102

RPP202

RPP302

10 x 10

BK7

RPP103

RPP203

RPP303

12 x 12

BK7

RPP104

RPP204

RPP304

15 x 15
BK7
RPP105
RPP205

RPP305

20 x 20
BK7
RPP106
RPP206

RPP306

Note: customized size and coating are available upon request.

 

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