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:
Sep. 01, 2026
Filed:
Feb. 28, 2022
Nec Platforms, Ltd., Kawasaki, JP;
Fujio Okumura, Kanagawa, JP;
NEC Platforms, Ltd., Kanagawa, JP;
Abstract
A projection device includes a light source, spatial light modulator, a control unit, and a shield. The spatial light modulator has a modulation part that modulates the phase of light emitted from the light source. The control unit divides the modulation part of the spatial light modulator into at least two regions and sets phase images of the target image in these regions. The light source is controlled to emit light onto the modulation parts with the phase images. The shield allows light from the image region for the desired image to pass through as projection light while blocking light from an unnecessary region, including ghost images.