Title:
走査光学装置及びマルチビーム走査光学装置
Document Type and Number:
Japanese Patent JP3559711
Kind Code:
B2
Abstract:
A scanning optical device used for a laser beam printer, a digital copying apparatus or the like, includes a light source for emitting light beam, deflector for deflecting light beam emitted from the light source toward a surface to be scanned, and a scanning optical system for forming a spot of the light beam deflected by the deflector on the surface to be scanned. The scanning optical system has a plurality of optical elements. A diffraction optical element is formed on a curved surface of at least one of the plurality of optical elements.
Inventors:
Koji Toyoda
Application Number:
JP18169998A
Publication Date:
September 02, 2004
Filing Date:
June 12, 1998
Export Citation:
Assignee:
Canon Inc
International Classes:
G02B5/18; G02B26/10; G02B26/12; H04N1/113; B41J2/44; (IPC1-7): G02B26/10; B41J2/44; G02B5/18; H04N1/113
Attorney, Agent or Firm:
Yukio Takanashi