Rotary body driving apparatus
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United States of America Patent
Stats
-
Dec 6, 2016
Grant Date -
May 26, 2016
app pub date -
Oct 13, 2015
filing date -
Nov 26, 2014
priority date (Note) -
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status (Latency Note)
Importance
Abstract
The rotary body driving apparatus comprises: a rotary body having reflective surfaces; a motor having a rotor shaft; a rotor being attached to one end part of the rotor shaft together with the rotary body; a stator housing having a bearing section, which rotatably holds the rotor shaft; a motor substrate for detecting a rotational position of the rotor, the motor substrate being provided to the stator housing; a magnetized section for frequency generation, the magnetized section being formed into a ring shape and provided to an end surface of the rotary body facing the motor substrate; and a circular frequency generation pattern, which faces the magnetized section, being provided to the motor substrate and disposed close to the magnetized section.
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