ALEXANDRIA, Va., June 9 -- United States Patent no. 12,287,608, issued on April 29, was assigned to LENOVO (BEIJING) Ltd. (Beijing).

"Image projection method and system" was invented by Jiangtao Gong (Beijing) and Liuxin Zhang (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "An image cast system includes: a transparent holographic display screen; a first diffraction grating superimposed at a first display surface of the transparent holographic display screen; a second diffraction grating superimposed at a second display surface of the transparent holographic display screen; a plurality of cast light sources including a cast light source disposed outside and facing towards the transparent holographic d...