Title:
OPTICAL DEVICE, OPTICAL DEVICE DRIVING UNIT AND CAMERA SYSTEM
Document Type and Number:
Japanese Patent JP3673774
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To maintain zooming speed constant, by keeping the manipulated variable of a zooming control switch or the like constant during zooming drive.
SOLUTION: This device is provided with a storing means 6a for storing actual driving speed and actual driving direction of an optical adjusting means 9, at the point of operation time when the optical adjusting means 9 is previously driven, before starting preset drive control and also a storing instruction operation means 8 is operated, as preset speed and direction information and an arithmetic processing circuit 6 for conducting speed and direction preset drive control by which the optical adjusting means is driven at speed, corresponding to the preset speed information stored in the storing means and in a direction, corresponding to the preset direction information stored in the storage means, according to the operation of a control start operation means 7 different form the storage instruction operation means when a drive command operation means 1 is not being operated.
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Inventors:
Kichi Ichikatsu Kawa
Kenshi Natsume
Kenshi Natsume
Application Number:
JP2002182132A
Publication Date:
July 20, 2005
Filing Date:
October 28, 1999
Export Citation:
Assignee:
Canon Inc
International Classes:
G02B7/08; G02B7/02; G02B7/10; H04N5/232; (IPC1-7): G02B7/08; G02B7/02; G02B7/10; H04N5/232
Domestic Patent References:
| JP2859298B2 | ||||
| JP11084212A | ||||
| JP11101932A | ||||
| JP3125569U | ||||
| JP11160604A | ||||
| JP8234080A | ||||
| JP11023943A |
Attorney, Agent or Firm:
Masayuki Kishida
Atsushi Mizumoto
Hiroji Obana
Atsushi Mizumoto
Hiroji Obana