发明授权
US07582995B2 Stepping motor, lens device using the same, and imaging device using the same
失效
步进电机，使用其的镜头装置，以及使用其的成像装置
- 专利标题： Stepping motor, lens device using the same, and imaging device using the same
- 专利标题（中）： 步进电机，使用其的镜头装置，以及使用其的成像装置
-
申请号： US11231905申请日： 2005-09-22
-
公开(公告)号： US07582995B2公开(公告)日： 2009-09-01
- 发明人: Yoshihiro Ito , Yoji Naka , Takehiko Senba , Haruo Onozuka , Mitsuo Manabe
- 申请人： Yoshihiro Ito , Yoji Naka , Takehiko Senba , Haruo Onozuka , Mitsuo Manabe
- 申请人地址： JP Saitama JP Tokyo
- 专利权人： Fujinon Corporation,FUJIFILM Corporation
- 当前专利权人： Fujinon Corporation,FUJIFILM Corporation
- 当前专利权人地址： JP Saitama JP Tokyo
- 代理机构： Sughrue Mion, PLLC
- 优先权： JP2004-275780 20040922; JP2004-275782 20040922; JP2005-051504 20050225
- 主分类号： H02K7/06
- IPC分类号： H02K7/06 ; H02K37/12 ; H02K7/20 ; H02K16/00
摘要：
A stepping motor comprises first to third coil portions and first to second rotors. The first rotor has a cylindrical shape and a circumferential surface thereof is magnetically-polarized so as to alternately arrange south poles and north poles. The first rotor is disposed inside the first and second coil portions, and is rotated by magnetic fields generated at a time when the first and second coil portions are energized. The second rotor has a disk shape and a surface thereof is magnetically polarized so as to alternately arrange south poles and north poles. The second rotor is disposed such that edge areas of both surfaces thereof are interposed between the second and third coil portions. The second rotor is rotated by magnetic fields generated at a time when the second and third coil portions are energized.
公开/授权文献
信息查询
