Light pressure rotator and light pressure rotating device
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United States of America Patent
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Jun 21, 2011
Grant Date -
Feb 7, 2008
app pub date -
Jul 21, 2005
filing date -
Jul 22, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The light pressure rotator (1) is the light pressure rotator being light pressure trapped by irradiation with light and light pressure rotating about the central axis O of rotation, characterized in that a reverse torque generating section generating a torque for rotating the rotator in the direction reverse to the predetermined direction is removed from a section arranged with three blades (2) each having a first side face (3) extending in the radial direction from the central axis O of rotation, a second side face (4) facing the central axis O of rotation, a third side face (5) facing the first side face (3), a lower surface (6) intersecting the central axis O of the rotation, and an upper surface (7) facing the lower surface (6). The light pressure rotating device comprises the light pressure rotator (1), a light source (C), and an objective (condenser) lens D.
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