ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,675, issued on Dec. 16, was assigned to CASIO COMPUTER Co. LTD. (Tokyo).
"Detection device and timepiece" was invented by Tomoyasu Kurokawa (Kokubunji, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A detection device including a device main body provided with a light receiving hole corresponding to a light receiving element and a light emitting hole corresponding to a light emitting element, and a waterproof member arranged between an outer circumferential surface of a cover arranged in the light receiving hole or the light emitting hole and an inner circumferential surface of the light receiving hole or the light emitting hole."
The patent ...