bainaben

Prism

Roof prism

Roof prism

Roof prism is combined with a right angle prism and a totally internally reflecting roof and they are attached by them largest square surfaces. It can invert and reverse an image, also, deflect the image 90° . Therefore, it is often used in terrestrial telescopes, viewing systems and rangefinders. 

Roof prism
Roof prism

Specifications

Material:  BK7 Grade A Optical Glass 
Dimension Tolerance:  +0.0, -0.2 mm 
Clear Aperture:  >80%
Angle Tolerance:  ± 3arcmin
Flatness:  l/2 @632.8 nm
Surface Quality:  60-40 scratch and dig