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:
Jul. 06, 2021
Filed:
Sep. 06, 2019
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Ya-Lan Feng, New Taipei, TW;
Chun-Cheng Ko, New Taipei, TW;
HON HAI PRECISION INDUSTRY CO., LTD., New Taipei, TW;
Abstract
A retaining ring for retaining lenses in a lens module carries an internal shape reducing the incidence of stray reflected light. The through hole in the retaining ring allows light to pass and a prismatic protrusion is disposed on a wall of the through hole. The protrusion has first and second inclined surfaces each at a specific angle. Acute angle θ1 is formed between the first inclined surface and end surface of ring, and acute angle θ2 is formed between the second inclined surface and other end surface of ring. Relationship between the acute angles are θ1>θ2, and 60°≤θ1+θ2≤80°. A lens module using such a retaining ring is also provided.