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Patent Searching and Data


Title:
POSITION DETECTION MECHANISM, IMAGING DEVICE, AND ENDOSCOPE
Document Type and Number:
WIPO Patent Application WO/2019/202669
Kind Code:
A1
Abstract:
The present invention is provided with a fixed frame 30, a movable frame 40 in which at least a part 42 is constituted from a magnetic body, magnets 60a, 60b, a drive coil 21, and a detection coil 22 arranged parallel to the drive coil 21 along the optical axis direction L and positioned in the same position as the drive coil 21 in the radial direction K or further toward the movable frame 40 than the drive coil 21, the detection coil 22 being energized by an alternating electric current, and thereby detecting a change in inductance from the part 42 when the movable frame 40 is moved.

Inventors:
OGAWA KOTA (JP)
MATSUMOTO KAZUHIRO
Application Number:
JP2018/015904
Publication Date:
October 24, 2019
Filing Date:
April 17, 2018
Export Citation:
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Assignee:
OLYMPUS CORP (JP)
International Classes:
G02B7/08; A61B1/00; G02B7/04; G02B23/26
Foreign References:
JP2012177754A2012-09-13
JP2009271204A2009-11-19
JP2006178362A2006-07-06
JPH04212914A1992-08-04
JP2000295832A2000-10-20
JPH0437916U1992-03-31
US20110273789A12011-11-10
Attorney, Agent or Firm:
ITOH Susumu (JP)
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