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. 06, 2022
Filed:
Apr. 01, 2022
Shenzhen Qiaohua Industries Limited, Shenzhen, CN;
Ruishi Yang, Shenzhen, CN;
SHENZHEN QIAOHUA INDUSTRIES LIMITED, Shenzhen, CN;
Abstract
A projection device includes a light beam generator including an incoherent light source assembly, a reflecting mirror arranged on one side of the light beam generator, an interference structure arranged on a reflecting light path of the reflecting mirror and generating a pattern effect, a first gear structure arranged on an outer side of the interference structure, a convex lens arranged on an exit light path of the interference structure; and a motor. A light beam generated by the light beam generator irradiates on one surface of the reflecting mirror along an incident light path of the reflecting mirror and reflects to a side surface of the interference structure. The light beam passes through the interference structure and the convex lens in sequence to form a patterned projection. A second gear structure engaged with the first gear structure is arranged on an output shaft of the motor.