ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,091, issued on Dec. 16.
"Monolithic natural light homogenization lighting device and method based on lens and sawtooth grating" was invented by Jian Liu (Harbin, China), Xumin Ding (Harbin, China), Xinwei Wang (Harbin, China) and Chenguang Liu (Harbin, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention discloses a monolithic natural light homogenization lighting device and method based on lens and sawtooth grating, and the device can be used as lighting curtains, indoor shutters, window glasses and the like. The device includes a front surface and a rear surface in an array form, the first surface is a lens array, and the sec...