Achromatic scanning system

Details Achromatic scanning system Achromatic scanning system

G - Physics

02

B

88/96

G02B 26/10 (2006.01)

Patent

CA 1322680

ABSTRACT OF THE DISCLOSURE An achromatic scanning system subjects an incoming beam of light to reflection off four successive mirrors. The mirrors at the input and output are pre- ferably plane mirrors and are referred to as the scanning mirrors. They are movable and provide the desired beam displacement when appropriately driven. They face away generally from each other and are rotatable about respec- tive axes. Each axis lies in the plane of its respective mirror and the two axes are non-parallel (preferably perpendicular) to each other. The two intermediate mirrors are concave mirrors that face each other and define an afocal assembly that transfers the light reflected from the first scanning mirror to the second scanning mirror.

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