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Products & Services  >  Prisms  >  Half Penta Prism
Half Penta Prism

Half Penta Prism is used to deflect a straight light 135 degree,it is exactly an half cut from penta prism,it is widely used in telescope systems.

Specifications:

Material.........................................N-BK7 glass grade A

Dimension Tolerance......................................±0.1mm

Clear Aperture..................................................>90%

Deviation Tolerance.........................................see table

Surface Quality..................................................60~40

Flatness..............................................<λ/4@632.8nm

Chamfer.................................................<0.5mm×45°

Coating:

①I/O Surfaces: AR coating,Ravg<0.5% @450~650nm

②Reflecting Surface: Enhanced Alumium with black paint,Ravg>85% @400~700nm

P/NA×hDeviation
2041010×10<1'
2041110×10<3'
2041215×15<1'
2041315×15<3'
2041418×18<1'
2041518×18<3'
●Unit:mm
●Other sizes and coatings are available upon request.