The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 2020
Filed:
Jun. 01, 2018
Shanghai Blue Lake Lighting Tech. Co., Ltd., Shanghai, CN;
Yi Yang, Shanghai, CN;
SHANGHAI BLUE LAKE LIGHTING TECH. CO., LTD., Shanghai, CN;
Abstract
A lamp is provided that includes a light source (), having a laser diode () and a fluorescent sheet (). The laser () emitted from the laser diode () is focused on the fluorescent sheet () and excites the fluorescent sheet () to emit fluorescent light (). The fluorescent sheet () has a transparent thermally conductive substrate () and a fluorescent coating () attached to the substrate, and has a diaphragm plate () disposed at a rear end of an optical path of the fluorescent sheet () and attached to the fluorescent sheet (), the diaphragm plate () having a light-transmitting zone () and a light-shading zone () closely adjacent to each other. The diaphragm plate () can at least partially block light around a light-emission spot.