| 摘要 |
A scanning apparatus comprises two rotatable bodies ( 1, 10 or 40 ) arranged to rotate in opposite directions. The first body being a polarizer ( 10 ) and the second being a mirror ( 1 ) or a second polarizer ( 40 ). The apparatus is arranged to define an optical path for a polarized beam, wherein the optical path passes through the first body ( 10 ), is reflected at the second body ( 1 or 40 ), and is reflected by the first body ( 10 ) back to the second body ( 1 or 40 ) from where it is transmitted or reflected to produce a linear scan. There is also disclosed a scanning system comprising a reflector ( 1 ) and an optical wedge ( 42 ) containing refractive materials, arranged to counter rotate and arranged so that a beam passing through the optical wedge ( 42 ), is reflected by the reflector ( 1 ) and passes back through the optical wedge ( 42 ) to produce a linear scan.
|
