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:
Jun. 03, 2008
Filed:
Jul. 11, 2005
Akira Shinbo, Shiojiri, JP;
Shunji Kamijima, Hara-mura, JP;
Kazuhisa Mizusako, Fujimi-machi, JP;
Nobuo Shimizu, Suwa, JP;
Akira Shinbo, Shiojiri, JP;
Shunji Kamijima, Hara-mura, JP;
Kazuhisa Mizusako, Fujimi-machi, JP;
Nobuo Shimizu, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A screen includes a lens array having a plurality of spherical lens elements. A first length of the spherical lens elements, along a first direction at substantially a center of each of respective spherical lens elements, and a second length of the spherical lens elements, along a second direction at substantially the center of each of the respective lens elements and substantially orthogonal to the first direction, are set such that the second length is larger than the first length. A curvature center position of any one of the plurality of spherical lens elements is arranged to be at substantially a half of the first length along the first direction, with respect to a curvature center position of another spherical lens element adjacent to the lens element in the second direction.