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:
Dec. 02, 2008
Filed:
Feb. 23, 2005
Daisuke Imafuku, Fujisawa, JP;
Hiroki Yoshikawa, Hiratsuka, JP;
Tetsu Ohishi, Hiratsuka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention provides a technique suitable for making a set more compact by realizing reduction in height and reduction in depth. An image display apparatus of the present invention includes a reflecting mirror () for reflecting the image sent from a projection lens (), and guiding the image to a transmissive screen (). The reflecting-mirror () includes a planar mirror section () for reflecting, of the entire image exiting the projection lens (), only image portions projected onto the upper section of the transmissive screen (), and a Fresnel mirror section () with multiple reflective prisms for reflecting only image portions projected onto the lower section of the screen ().