Penta Prism & Half Penta Prism

Penta prism has five sides, four of them polished. Two reflective sides are coated with metal or dielectric HR coating and these two sides can be blackened. The deviation angle of 90deg will not be changed if the penta prism is slightly adjusted, this will be convenient to install it.

Penta prism widely used in laser level, alignment and optical tooling.

The reflecting surfaces of this prism must be coated with a metallic or dielectric reflective coating.


Specifications

Material

BK7, UV Fused Silica

Dimension Tolerance

±0.1mm

90°Deviation Tolerance

30 arc seconds or better

Flatness

λ/4 @ 632.8nm or better

Surface Quality

60/40 scratch and dig or better

Coating

HR coating and AR coating

Clear Aperture

>90%

Chamfer

Protective



Half Penta Prism is exactly an half cut from Penta Prism which deviate the beam by 135°. The reflecting surface must be coated with reflective coating.


Specifications

Material

BK7, UV Fused Silica

Dimension Tolerance

±0.1mm

135°Deviation Tolerance

3 arc minutes to 10 arc seconds

Flatness

λ/4 @ 632.8nm or better

Surface Quality

60/40 scratch and dig or better

Coating

HR coating and AR coating

Clear Aperture

>90%

Chamfer

Protective

 




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