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:
Nov. 14, 1989
Filed:
Jul. 22, 1988
Hitoshi Kageyama, Osaka, JP;
Toshikazu Suzuki, Osaka, JP;
Keijiro Sakamoto, Osaka, JP;
Tetsuo Kyogoku, Osaka, JP;
Masayuki Nino, Osaka, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
A light-transmission viewing screen for displaying an optical image from a beam of light projected thereon along a predetermined path of light provided rearwardly of the screen, the viewing screen having a virtual center axis extending toward a viewer's viewing position, the light-transmission viewing screen comprising a transparent or translucent transmission screen plate through which to transmit the beam of light, and a transmission grating located on at least a portion of one of the surfaces of the transmission screen plate for diffracting the beam of light toward a location substantially aligned with the virtual center axis of the viewing screen when the beam of light is transmitted through the transmission grating.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile