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:
Apr. 22, 2024
Qisda Corporation, Taoyuan City, TW;
Te-Yuan Li, Taoyuan City, TW;
Chih-Wei Cho, Taoyuan City, TW;
Qisda Corporation, Taoyuan City, TW;
Abstract
A projection apparatus configured to project an image frame onto a projected plane is provided. The projection apparatus includes an image source, a projection lens, a time-of-flight ranging sensor (ToF ranging sensor), and a controller. The image source is configured to emit an image beam. The projection lens is configured to project the image beam onto the projected plane to form the image frame. The ToF ranging sensor is configured to measure a distance from the projected plane. The controller is configured to set a sampling range of the ToF ranging sensor and obtain a plurality sets of distance information of measured points on the projected plane by moving the sampling range of the ToF ranging sensor, and adjust a focal distance of the projection lens according to the sets of distance information through the controller. A projecting method is also provided.