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:
May. 24, 2011
Filed:
Jan. 08, 2008
Applicants:
Hidefumi Sakata, Tatsuno-cho, JP;
Susumu Aruga, Shiojiri, JP;
Takayuki Matsubara, Matsumoto, JP;
Inventors:
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/00 (2006.01); G02B 27/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A display device includes a light source that supplies light, a phase modulator that modulates the phase of the light from the light source to form an image, and an imaging optical system that focuses the image formed through the modulation performed by the phase modulator. The phase modulator produces diffracted light according to a phase modulation pattern while changing the phase of the light so as to form an intermediate image between the phase modulator and the imaging optical system, and the phase modulator also changes the position of the intermediate image.