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:
Jul. 21, 2015
Filed:
Jun. 08, 2012
Akinobu Suga, Tokyo, JP;
Akinobu Suga, Tokyo, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A projector includes: a laser light source that emits laser light; a condensing optical system that collimates the laser light; a holographic recording medium that, when laser light for reproduction is incident thereupon, emits a reproduced holographic optical image on the basis of a holographic image; a light modulation element that modulates the reproduced holographic optical image and emits the result to a projection optical system as an optical image for projection; a projection optical system that projects the optical image for projection; and a focal depth adjustment unit that adjusts a focus depth of the ray bundle projected by the projection optical system.