Invention Grant
US09121735B2 Encoder, lens apparatus, and camera capable of detecting position of object
有权
能够检测物体位置的编码器，透镜装置和相机
- Patent Title: Encoder, lens apparatus, and camera capable of detecting position of object
- Patent Title (中): 能够检测物体位置的编码器，透镜装置和相机
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Application No.: US13959852Application Date: 2013-08-06
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Publication No.: US09121735B2Publication Date: 2015-09-01
- Inventor: Kazuhiro Noguchi
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP
- Agency: Rossi, Kimms & McDowell LLP
- Priority: JP2012-176385 20120808
- Main IPC: G03B13/00
- IPC: G03B13/00 ; G01D5/347 ; H04N5/225
Abstract:
An encoder includes a base, a cylinder rotatable in a circumferential direction with respect to the base, at least three supporting portions rotatably supporting the cylinder with respect to the base, a connecting portion provided on the cylinder and rotatable within a first range between two supporting portions of the at least three supporting portions, a scale attached to the cylinder, and a detector configured to detect a position of the cylinder with respect to the base by using the scale, and the detector is arranged within a second range different from the first range.
Public/Granted literature
- US20140043526A1 ENCODER, LENS APPARATUS, AND CAMERA CAPABLE OF DETECTING POSITION OF OBJECT Public/Granted day:2014-02-13
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