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. 04, 2001
Filed:
Mar. 17, 2000
Applicant:
Inventor:
Hiroo Iwata, Tsukuba-shi, Ibaraki 305-0821, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 3/700 ; H04N 7/00 ;
U.S. Cl.
CPC ...
G03B 3/700 ; H04N 7/00 ;
Abstract
A projector,is provided for casting light toward the inside of a spherical screen,. A first reflecting mirror,is arranged inside the spherical screen,on the optical axis,of the projector,, and a second reflecting mirror,of a convex mirror on the optical axis,is arranged adjacent to a body tube,of the projector,. The light emitted from the projector,is cast onto the entire surface of the spherical screen,via the first and second reflecting mirrors,. Images with virtual presence can be projected onto the entire surface of the spherical screen by the simple structures using the single projector.