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:
Jan. 07, 1986
Filed:
Jul. 09, 1982
Takao Tagawa, Kashihara, JP;
Toshio Urakawa, Yamatokoriyama, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An optical system adapted for a laser printer is characterized in that a laser generator provides a laser beam having a cross section of an ellipse whose longitudinal axis is defined by a surface of the laser generator for emitting the laser beam, a first lens receives and passes through the laser beam having the elliptic cross section toward a lower reflector, a second lens receives the laser beam having the elliptic cross section such that a laser element of the laser beam along with a direction orthogonal to the surface of the laser generator is incident upon a longitudinal side of the second lens and images the laser beam having a cross section of an approximate circle to a substantially focused spot at a surface of a light sensitive medium. The optical system is to focus the first lens by rotation with screws formed on a body tube. Preferably, the first lens comprises a focus lens of an axial symmetrical lens including a spherical lens and the second lens comprises a cylindrical lens.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile