ALEXANDRIA, Va., May 12 -- United States Patent no. 12,625,346, issued on May 12, was assigned to BENQ Corp. (Taipei City, Taiwan).
"Projection apparatus and auto-focus method" was invented by Chia-Nan Shih (Taipei City, Taiwan) and Ming-Sheng Tai (Taipei City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A projection apparatus including a projection module, a projection lens, an actuator, a distance sensor and a controller is provided. The projection module is adapted to project an image beam onto a projection surface to generate a projection image. The projection lens is disposed on a transmission path of the image beam. The actuator is connected to the projection lens and configured to adjust a f...