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. 19, 2007
Filed:
Feb. 22, 2005
Futoshi Yamasaki, Yokohama, JP;
Nobuo Masuoka, Chigasaki, JP;
Masahiko Yatsu, Fujisawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The image display device is configured to include the light source including a plurality of semiconductor light-emitting elements, a parallelizing unit including a plurality of cell lenses arranged in a one-to-one correspondence with each of the plurality of semiconductor light-emitting elements, an image display element for forming an optical image, a pair of lens-array groups located between the parallelizing unit and the image display element, and a projection unit for enlarging and projecting the optical image formed on the image display element. Moreover, the plurality of semiconductor light-emitting elements are located at substantially focal points of the cell lenses of the parallelizing unit. Furthermore, there exist at least two types of semiconductor light-emitting elements' groups, light beams on optical axes of the semiconductor light-emitting elements belonging to the two types of semiconductor light-emitting elements' groups existing on straight lines which are different from optical axes of the lens-array groups.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile