ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,327, issued on April 21.
"Starry sky projection device with nebula lens and starry sky generation method" was invented by Guihua Zhang (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a starry sky projection device with a nebula lens and a starry sky generation method, which comprises a nebula lens with a light-emitting area, wherein a variation part is added on the nebula lens, and the variation part defines a variation area, and the variation area generates image variation different from the light-emitting area; and a varied nebula and accompanying stars are generated by adding a light source and a ...