The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 08, 1993
Filed:
Sep. 14, 1990
Masaaki Aoyama, Tokyo, JP;
Akira Morimoto, Tokyo, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A scanning optical apparatus has a laser beam source for emitting a laser beam, a scanning deflector for deflecting and scanning the laser beam in a principal scanning plane, a scanning lens for imaging the deflected laser beam on a scanning surface to form a spot thereon, an imaging lens for forming the laser beam from the laser beam source into a line spread function image in an auxiliary scanning plane that is perpendicular to the principal scanning plane before the laser beam is made incident to the scanning deflector, a static deflector which is located on the line spread function image and which is adapted to guide the beam from the light source to the scanning deflector and guide the reflected beam from the scanning deflector to the scanning lens, and a holding member for holding at least the laser beam source, the imaging lens and the static deflector separately from other optical elements.