Claims
- 1. A camera, comprising:
- a power source;
- boosting means for boosting a voltage of said power source;
- charging means for accumulating therein energy boosted by said boosting means;
- piezo-electric means;
- driven means including a shutter connected to be actuated by said piezo-electric means;
- driving and controlling means for driving and controlling said piezo-electric means by energy accumulated in said charging means; and
- shutter opening speed controlling means having means for controlling a rate of current flow to be supplied to said piezo-electric means per unit time to control the actuating speed of said piezo-electric means and hence the opening speed of said shutter.
- 2. A camera, comprising:
- a power source;
- boosting means for boosting a voltage of said power source;
- charging means for accumulating therein energy boosted by said boosting means;
- piezo-electric means;
- driven means including a shutter connected to be actuated by said piezo-electric means;
- driving and controlling means for driving an controlling said piezo-electric means by energy accumulated in said charging means;
- a capacitor parallely connected directly to said piezo-electric means to stabilize the speed of displacement of said piezo-electric means; and
- exposure amount controlling means for controlling said driving and controlling means to open said shutter and to close said shutter when an appropriate exposure amount is obtained.
- 3. A camera, comprising:
- a power source;
- boosting means for boosting a voltage of said power source;
- charging means for accumulating therein energy boosted by said boosting means;
- piezo-electric means;
- driven means including a shutter connected to be actuated by said piezo-electric means;
- means for selecting a photographing mode out of a plurality of photographing modes;
- driving and controlling means including shutter speed controlling means for controlling a current which flows to said piezo-electric means in accordance with a select photographing mode; and
- exposure amount controlling means for controlling said driving and controlling means to close said shutter when an appropriate exposure amount is obtained.
- 4. A camera according to claim 3, wherein said photographing mode selecting means is manually operable and selects one of a shutter speed priority automatic exposure mode, an aperture value priority automatic exposure mide and a manual mode.
Priority Claims (1)
Number |
Date |
Country |
Kind |
61-29399 |
Feb 1986 |
JPX |
|
Parent Case Info
This application is a divisional, of application Ser. No. 013,561, filed Feb. 11, 1987 now abandoned.
US Referenced Citations (12)
Foreign Referenced Citations (9)
Number |
Date |
Country |
53-95620 |
Aug 1978 |
JPX |
59-186381 |
Oct 1984 |
JPX |
59-204014 |
Nov 1984 |
JPX |
60-12523 |
Jan 1985 |
JPX |
60-39631 |
Mar 1985 |
JPX |
60-52832 |
Mar 1985 |
JPX |
60-120339 |
Jun 1985 |
JPX |
60-144726 |
Jul 1985 |
JPX |
60-159701 |
Aug 1985 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
13561 |
Feb 1987 |
|