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. 31, 2019
Filed:
Nov. 16, 2015
Sony Corporation, Tokyo, JP;
Hajime Ishihara, Ibaraki, JP;
SONY CORPORATION, Tokyo, JP;
Abstract
A projection display unit includes, in a housing, a visible light illuminator, a light valve that modulates a first polarized component included in light outputted from the visible light illuminator, on a basis of an image signal, a projection lens that projects light modulated by the light valve onto a projection plane, a detection light-source section that outputs invisible light for detection, and an imaging device that receives a second polarized component included in light that is based on the invisible light. The detection light-source section is movable relative to the housing, and outputs the invisible light in a direction parallel to or a direction forming a fixed angle with respect to the projection plane.