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. 18, 2004
Filed:
Jul. 23, 2002
Koichi Hara, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides a reflection- or transmission-type liquid crystal display method enabling color synthesis without employing a dichroic prism or a polarizing beam splitter. Reflection-type display devices are formed on a reflective substrate. Each reflection type display device is composed of a barrier element consisting of a group of small liquid crystal shutters arranged two-dimensionally, microlens elements two-dimensionally arranged corresponding to the liquid crystal shutters, and a reflective surface of the reflective substrate, wherein the reflective surface is positioned on the focal plane of the microlenses. Parallel light beams of red, green and blue colors introduced obliquely respectively enter the reflection-type display devices exclusive for the respective colors and are mutually superposed on a plane distant from the display devices to achieve color synthesis. A projection lens is focused on the plane and projects an image on a screen provided in a distant position.