Invention Grant
- Patent Title: Annular optical spacer, imaging lens module, imaging apparatus and electronic device
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Application No.: US15823405Application Date: 2017-11-27
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Publication No.: US10197761B2Publication Date: 2019-02-05
- Inventor: Cheng-Feng Lin , Wei-Che Tung , Ming-Ta Chou
- Applicant: LARGAN PRECISION CO., LTD.
- Applicant Address: TW Taichung
- Assignee: LARGAN PRECISION CO., LTD.
- Current Assignee: LARGAN PRECISION CO., LTD.
- Current Assignee Address: TW Taichung
- Agency: McClure, Qualey & Rodack, LLP
- Priority: TW104208271 20150527
- Main IPC: G02B9/00
- IPC: G02B9/00 ; G02B9/08 ; G02B7/02 ; G02B27/00 ; G02B13/00
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.
Public/Granted literature
- US20180081144A1 ANNULAR OPTICAL SPACER, IMAGING LENS MODULE, IMAGING APPARATUS AND ELECTRONIC DEVICE Public/Granted day:2018-03-22
Information query
