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. 17, 2006
Filed:
Apr. 04, 2003
Hitoshi Tamada, Kanagawa, JP;
Ayumu Taguchi, Tokyo, JP;
Hitoshi Tamada, Kanagawa, JP;
Ayumu Taguchi, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A light reflection and diffraction element for enhancing the contrast of an image display device. In an off state of the element, a portion exhibiting a cyclic structure for diffracting incident light in a region where reflective members having reflection surfaces are aligned is reduced by preventing the generation of unrequired diffracted light. For example, by covering connection regions of the ribbon reflective members by light shielding masks, incident light is shielded. Preferably, any uneven state of the reflection surfaces of the ribbon reflective members is controlled, and a correlation length is made small.