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:
Apr. 11, 1978
Filed:
Feb. 25, 1977
Gary K Starkweather, Saratoga, CA (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A flying spot scanning system is provided by utilizing reflected light from a multifaceted rotating polygon which is then directed to the scanned medium. A light source illuminates at least one of the facets of the polygon during each scanning cycle to provide a scanning beam of light. In each scanning cycle, information is transmitted to the scanned medium by modulating the light from the light source in accordance with a video signal. A first cylindrical lens is employed in convolution with other optical elements to focus the scanning beam to a spot in a focal plane at the surface of the medium. Start of scan detection is provided for the synchronization of the scanning cycles by means apart from the scan width on the medium. A portion of the beam at the start of scan position is deflected to impinge upon a second cylindrical lens which focuses the deflected beam to a spot received by a detector element.