Patent ID: 7436563
Filing Date: 2008-10-14
Classification: G02B

Abstract:
1. An optical scanning apparatus comprising: a light source; a deflection scanner for scanningly deflecting a laser beam emitted by said light source; a deflection member for deflecting a part of the laser beam emitted by said light source, said deflection member being disposed between said light source and said deflection scanner; a common sensor for receiving the laser beam emitted by said light source; and a lens for collimating the laser beam emitted by said light source, wherein said lens is a composite member integral with said deflection member, wherein said common sensor receives both of the laser beam deflected by said deflection member before it is incident on said deflection scanner and the laser beam scanningly deflected by said deflection scanner; wherein said deflection member reflects a part of the laser beam emitted by said light source and converges the part of the laser beam; and wherein said lens of said composite member is disposed at such a position as to transmit a central part of the laser beam emitted by said light source and to collimate the laser beam, and said composite member further comprising a reflection and convergence member disposed at such a position as to reflect a marginal part of the laser beam which is around the central part.