mage rotating Object and its inverted image lie on common axis
A form of prism invented by H.W. Dove
The prism is used as an image rotator. It must be used in parallel light.
The exit light propagates along the same direction an the entrance but the image rotates at twice the angular rate as the prism.
Manufacturing Tolerance
Attribute |
Commercial standard |
Precision Standard |
Material |
BK7, fine annealed |
BK7, fine annealed |
Dimensional |
±0.25mm |
±0.15mm |
Angles |
90°±5',90°±3' |
90°±1',90°±30”,90°±5” |
Flatness |
λ/2 |
λ/4,λ/8 |
Cosmetics (Scratch-dig) |
80-50,60-40 |
20-10,10-5 |
edges |
Fine ground and beveled |
Fine ground and beveled Sharp edges |
Clear Aperture |
85%Reflecting |
90%Reflecting |
Coating |
See attached coating chapter |
See attached coating chapter |
 |
 All dimensions are in mm unless otherwise specified.
Different material, sizes, tolerance and coating are available upon request. |
