US Patent Issued to Nippon Sheet Glass on March 11 for "Film, liquid composition, optical element, and imaging apparatus" (Japanese Inventors)

ALEXANDRIA, Va., March 12 -- United States Patent no. 12,247,135, issued on March 11, was assigned to Nippon Sheet Glass Co. Ltd. (Tokyo).

"Film, liquid composition, optical element, and imaging apparatus" was invented by Koichiro Nakamura (Kanagawa, Japan) and Satoru Kusaka (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A film (1) includes hollow particles (10) and a binder (20). The hollow particles are made of a material having a refractive index of 1.15 to 2.70. The binder (20) is formed of at least a polysilsesquioxane and binds the hollow particles (10). The film (1) satisfies at least one of requirements Ib/Ialess than=0.7 and Ib/Icless than=0.3. Ia is an absorbance derived from a hydrocarbon g...