Small Porro Prism

Small Porro Prism is very good design for laser cavity aligment, it works much better than a cavity mirror

Right Angle Prism

BK7, UVFS Right angle prism is deviating or deflecting a beam of light with 90 deg or 180 deg

Penta Prism

BK7 Penta prism can deflect an incident beam without inverting or reversing to 90 deg

Retroreflector Prism

Light entering through the hypotenuse is reflected by each of the three surfaces in turn and will output throug the input surface

Roof Prism

A roof prism works like a 90 or 180 degree mirror, but the image is reversed