Porro Prism A refracting optical prism used in optical instruments to modify image orientation, In use, the light enters through the largest rectangular plane in the prism, passes through two total reflections of the inclined plane, and then penetrates the original plane of incidence, Because the light comes in and out normally, the prism does not disperse. But the image that passes through Porro prism will be flipped 180 degrees, and it will travel in the direction it entered, which means it will travel 180 degrees.



Porro Prism

Material BK7, UV Fused Silica, Sapphire, ZnSe,Caf2,Si,Ge,etc.
Size 3mm-300mm
Size tolerance 0.00/-0.05mm or customer request
Clear Aperture 90%
S/D 60-40 40-20 20/10 10/5
Flatness 1/10 1/4lambda at 632.80nm
Chamfer 0.25mmx45
Angle tolerance