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Penta prisms deviate an input beam by 270 degrees (-90 degrees) independently of the angle of incidence on the first surface. They are therefore useful as precise right angle mirrors which are insensitive to alignment. These penta prisms find many metrological applications.

◦These penta prisms are Anti-Reflection coated on the entrance and exit faces as well as being coated with an aluminum coating and black paint on the internal reflection faces.

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Attention

▶Caution should be taken with cleaning to not use strong solvents on the black painted surface.
▶There is a loss with Aluminum coating of about 12% in the single side, and 23% in both side internal reflection of prism resulting in input and output efficiency of about 77%.

Common Specifications
Material BK7
Surface flatness of substrateλ/4
Angle tolerance±3′
Surface Quality
(Scratch-Dig)
40-20
CoatingAluminum coating +Black Paint
MgF2 Singlelayer Antireflection Coating
Clear apertureCircle that inscribed in a square of 90% of the dimensions A
Outline Drawing

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Schematic

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Part Number

Catalog PDF

dxf

STP

IGS

SAT

Zemax

PPB-10-4

PPB-15-4

PPB-20-4

PPB-25-4

Spec
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Part Number
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    JP Yen Stock Qty
PPB-10-4
PPB-15-4
PPB-20-4
PPB-25-4

10mm

10.8mm

15mm

16mm

20mm

23mm

25mm

27.1mm

RoHS  

¥30,800

IN STOCK
RoHS  

¥37,650

IN STOCK
RoHS  

¥39,350

LOW
RoHS  

¥45,350

LOW