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:
Mar. 27, 2001
Filed:
Dec. 31, 1998
Etsuko Shibata, Toyokawa, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
A scanning optical apparatus constitutes a light source which emits a ray in a wavelength range of 460 to 650 nm, a first lens unit for forming a luminous flux using the ray and having at least one or more positive lens element, a scanner for scanning the luminous flux, a second lens unit for forming an image on a scanned medium using the luminous flux and a holding structure connected the light source to the first lens unit via at least two support members having mutually different linear expansion coefficients. In scanning optical apparatus, the movement of the image forming point on the scanned medium caused by change in the oscillation wavelength of the light source is compensated by the thermal expansion of the support members.