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.:

US 10197761 B1

Date of Patent:

Feb. 05, 2019

Filed:

Nov. 27, 2017

Annular optical spacer, imaging lens module, imaging apparatus and electronic device

Applicant:

Largan Precision Co., Ltd., Taichung, TW;

Inventors:

Cheng-Feng Lin, Taichung, TW;

Wei-Che Tung, Taichung, TW;

Ming-Ta Chou, Taichung, TW;

Assignee:

LARGAN PRECISION CO., LTD., Taichung, TW;

Attorney:

McClure, Qualey & Rodack, LLP

Primary Examiner:

Alicia M Harrington

Int. Cl.

CPC ...

G02B 9/00 (2006.01); G02B 9/08 (2006.01); G02B 7/02 (2006.01); G02B 27/00 (2006.01); G02B 13/00 (2006.01);

U.S. Cl.

CPC ...

G02B 7/026 (2013.01); G02B 7/021 (2013.01); G02B 27/0018 (2013.01); G02B 13/001 (2013.01);

Abstract

An annular optical spacer includes a first side portion, a second side portion, an outer annular portion and an inner annular portion. The second side portion is disposed opposite to the first side portion. The outer annular portion connects the first side portion and the second side portion. The inner annular portion connects the first side portion and the second side portion, wherein the inner annular portion is closer to a central axis of the annular optical spacer than the outer annular portion. The inner annular portion includes a plurality of annular grooves, wherein the annular grooves are disposed coaxially to the central axis, and each of the annular grooves includes a plurality of stepped surfaces.

Find Patent Forward Citations