Patent ID: 11914139
Assignee: CANON KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A scanning optical apparatus comprising:
a first light source unit provided with a first light source emitting a first laser beam and a cylindrical first holding member for holding said first light source;
a second light source unit provided with a second light source emitting a second laser beam and a cylindrical second holding member for holding said second light source;
a deflection unit provided with a rotary polygon mirror for deflecting the first and second laser beams emitted from said first light source and said second light source; and
a casing supporting said first light source unit, said second light source unit, and said deflection unit, said casing includes a first supporting portion for supporting said cylindrical first holding member of said first light source unit and a second supporting portion for supporting said cylindrical second holding member of said second light source unit,
wherein said first light source unit and said second light source unit are mounted to the first supporting portion and the second supporting portion corresponding to said first light source unit and said second light source unit in the same direction along the rotational axis direction,
wherein said second light source unit is disposed at a position different from a position of said first light source unit with respect to a rotational axis direction of said rotary polygon mirror,
wherein said cylindrical first holding member includes a concave first notched portion recessed in a radial direction of said cylindrical first holding member and extends along the rotational axis direction,
wherein when said first light source unit is mounted to said first supporting portion along the rotational axis direction, said second supporting portion is inserted into said concave first notched portion, and
wherein said second light source unit is mounted to said second supporting portion after said first light source unit is mounted to said first supporting portion.