Title:
CONTROLLING DEVICE OF OBJECT
Document Type and Number:
Japanese Patent JPH0552592
Kind Code:
A
Abstract:
PURPOSE:To obtain a controlling device of an object which enables precise controlling of movement of the object body to be controlled, along with the movement of the object body to be controlled. CONSTITUTION:Cycle time from rise to fall of detection signal A of a detection device 203 is getting shorter according as speed of a rotation ring 101 is getting faster. A micro-computer 110 calculates the cycle time in order to set forth waiting time of the fourth lens group 106 before its halt, to be longer to appropriate amount than the cycle time, and then, when the rise and fall of the detection signal A are not detected, the fourth lens group 106 is stopped.
Inventors:
HIRASAWA KATAHIDE
Application Number:
JP23402991A
Publication Date:
March 02, 1993
Filing Date:
August 21, 1991
Export Citation:
Assignee:
CANON KK
International Classes:
G01D5/26; (IPC1-7): G01D5/26
Attorney, Agent or Firm:
Toshihiko Watanabe
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