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:
May. 04, 1999
Filed:
Nov. 06, 1996
Takashi Iizuka, Tokyo, JP;
Ryota Ogawa, Tokyo, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A scanning optical system for scanning an object surface includes a light emitting device for emitting a beam of light and a deflection mirror rotatable to deflect the beam emitted by the light emitting device, and to scan within a predetermined scanning angle zone along a main scanning plane. The beam incident to the deflection mirror is inclined in a direction of an auxiliary scanning, a direction of incidence of the beam onto the deflection mirror intersects a rotational axis of said deflection mirror, and the direction of the beam is orthogonal to a reflection surface of the deflection mirror, when viewed in the main scanning plane as the beam reaches the center of the predetermined scanning angle zone. A curved mirror having power at least in the main scanning plane, and a toric lens positioned between the curved mirror and the object surface and having power at least in the auxiliary scanning direction are also provided.