发明名称 |
ROTARY ENCODER, ROTARY MOTOR, ROTARY MOTOR SYSTEM, DISK, AND METHOD OF MANUFACTURING ROTARY ENCODER |
摘要 |
An encoder includes a disc-shaped disk disposed so as to be rotatable about a rotation axis and having at least one ring-shaped track in which a rotating grating is formed and at least one fixed grating which is fixedly disposed opposed to the disk so that the fixed grating and the rotating grating construct a diffraction interference optical system. Each of a plurality of slits included in the at least one rotating grating is formed along a curved line obtained by making each of a plurality of radial lines using the rotation axis as a center curved in the circumferential direction at a predetermined curve degree so that a pitch of the slits can be set to a predetermined value.
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申请公布号 |
US2011069390(A1) |
申请公布日期 |
2011.03.24 |
申请号 |
US20100882211 |
申请日期 |
2010.09.15 |
申请人 |
KABUSHIKI KAISHA YASKAWA DENKI |
发明人 |
YOSHIDA YASUSHI;ARINAGA YUJI;YOSHIDOMI SHIROU;YAMAGUCHI YOSUKE;MURAOKA JIRO |
分类号 |
G02B27/44;B05D5/06 |
主分类号 |
G02B27/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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