US Patent Issued to APPOTRONICS on March 11 for "Projection screen" (Chinese Inventors)

ALEXANDRIA, Va., March 12 -- United States Patent no. 12,248,157, issued on March 11, was assigned to APPOTRONICS CORPORATION LIMITED (Guangdong, China).

"Projection screen" was invented by Lin Wang (Guangdong, China), Xiaofeng Tang (Guangdong, China), Wei Sun (Guangdong, China) and Yi Li (Guangdong, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A projection screen, with a design in which the apexes of multiple triangular pyramidal units of the projection screen in an array arrangement change gradually according to a predetermined relation, an image light shone from a projector is reflected by a microstructure layer having the triangular pyramidal units and then converged in a range centered around th...