Invention Grant
- Patent Title: Measuring apparatus and measuring method for measuring axis tilt of shaft of motor for polygon mirror
- Patent Title (中): 用于测量多面镜电机轴轴的倾斜测量装置和测量方法
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Application No.: US12710582Application Date: 2010-02-23
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Publication No.: US08227780B2Publication Date: 2012-07-24
- Inventor: Atsuyuki Isotani , Masami Kajihara
- Applicant: Atsuyuki Isotani , Masami Kajihara
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Brinks Hofer Gilson & Lione
- Priority: JP2009-040799 20090224
- Main IPC: G01N21/86
- IPC: G01N21/86 ; G02B26/08 ; G01B11/14
Abstract:
A measuring apparatus includes a light source emitting a measuring light, a first photo-detection element directly receiving a part of a reflected light of the measuring light reflected from a shaft to be measured to detect a first light receiving position, and a second photo-detection element directly receiving another part of the reflected light to detect a second light receiving position. An axis tilt angle of the shaft is measured on the basis of a signal output from the first photo-detection element and a signal output from the second photo-detection element.
Public/Granted literature
- US20100213359A1 MEASURING APPARATUS AND MEASURING METHOD FOR MEASURING AXIS TILT OF SHAFT OF MOTOR FOR POLYGON MIRROR Public/Granted day:2010-08-26
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