Optical scanning apparatus
AssigneeCanon Kabushiki Kaisha
InventorHiroshi Nakahata
Life of this patent
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Abstract
An optical scanning apparatus includes a rotatable polygonal mirror for deflecting first and second laser beams, which are incident on the polygonal mirror at diff(rent positions with respect to a rotational direction of the polygonal mirror; a first optical member for transmitting the first laser beam; a second optical member for transmitting the second laser beam; a laser beam blocking member, disposed between the first optical member and the second optical member, for blocking the first laser beam reflected by the first optical member to prevent the first laser beam reflected by the first optical member from being incident on the second optical member.
Claims11
An optical scanning apparatus comprising:
- a rotatable polygonal mirror for deflecting first and second laser beams, which are incident on said polygonal mirror at different positions with respect to a rotational direction of said polygonal mirror;
- a first optical member for transmitting the first laser beam;
- a second optical member for transmitting the second laser beam;
- and
- a first laser beam blocking member, disposed between said first optical member and said second optical member, for blocking the first laser beam reflected by said first optical member to prevent the first laser beam reflected by said first optical member from being incident on said second optical member.
Dependencies are inferred from the claim text.