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:
Aug. 06, 2019
Filed:
Jun. 18, 2015
Sony Corporation, Tokyo, JP;
Koji Miura, Kanagawa, JP;
SONY CORPORATION, Tokyo, JP;
Abstract
A projection display apparatus of the disclosure includes: a light valve () that modulates illuminating light (L) on the basis of image data to output the modulated light; an illuminating unit () including a light source, and a plurality of optical members for illumination that generate the illuminating light (L) on the basis of light from the light source to guide the illuminating light (L) to the light valve (); a projection lens () that projects the modulated light from the light valve () on a projection surface (A), and allows detection light to enter from a direction opposite to a travelling direction of the modulated light; and an imaging device () that is disposed at a location optically conjugated with the light valve (), and allows the detection light to enter through the projection lens. One or more of the plurality of optical members for illumination have optical property of reducing a noise component that affects the detection light and arises inside the illuminating unit ().