Title:
レンズ装置およびそれを有する撮像装置
Document Type and Number:
Japanese Patent JP6781592
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a lens device that enables performing drive control at a stable constant speed even when driving voltage is lacking.SOLUTION: A lens device that comprises a movable optical member and driving means driving the movable optical member, in which the maximum voltage that can be applied to the driving means is dependent on power supply voltage, comprises setting means that sets the maximum speed which can drive the movable optical member in a whole region of a drive range except for acceleration time in beginning of movement and deceleration time before stopping on the basis of at least one of the power supply voltage, driving current of the driving means, and driving voltage of the driving means, and control means that performs speed control of driving the movable optical member by the driving means using the maximum speed as upper limit speed.SELECTED DRAWING: Figure 1
Inventors:
Kasayama Masaomi
Application Number:
JP2016169515A
Publication Date:
November 04, 2020
Filing Date:
August 31, 2016
Export Citation:
Assignee:
Canon Inc
International Classes:
G02B7/08; G02B7/04; G03B13/34; G03B17/02; G03B17/14; H04N5/225
Domestic Patent References:
| JP2006215399A | ||||
| JP2007033737A | ||||
| JP2000171875A |
Attorney, Agent or Firm:
Okabe
Takao Ochi
Koji Yoshizawa
Masami Saito
Takao Ochi
Koji Yoshizawa
Masami Saito