JPH07209688A - Shake correction camera - Google Patents

Shake correction camera

Info

Publication number
JPH07209688A
JPH07209688A JP536394A JP536394A JPH07209688A JP H07209688 A JPH07209688 A JP H07209688A JP 536394 A JP536394 A JP 536394A JP 536394 A JP536394 A JP 536394A JP H07209688 A JPH07209688 A JP H07209688A
Authority
JP
Japan
Prior art keywords
time
shake
step
means
delay mode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP536394A
Other languages
Japanese (ja)
Inventor
Tatsuo Amanuma
Toshiyuki Nakamura
Keiji Urata
敏行 中村
辰男 天沼
圭史 浦田
Original Assignee
Nikon Corp
株式会社ニコン
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nikon Corp, 株式会社ニコン filed Critical Nikon Corp
Priority to JP536394A priority Critical patent/JPH07209688A/en
Priority claimed from US08/377,066 external-priority patent/US5659807A/en
Publication of JPH07209688A publication Critical patent/JPH07209688A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the current consumption of the shake correction camera which has a time-limit delay function. CONSTITUTION:This camera is equipped with a shake correcting means (CPU 1, hand shake detecting circuits 3 and 4, motor driving circuits 5 and 6, motors 7 and 8, and lens position detecting circuits 13 and 14) which moves a shake correcting lens 11 almost at right angles to the optical axis direction so as to correct a shake generated by vibration, a shake detecting means(hand shake detecting circuits 3 and 4) which detects a shake almost perpendicular to the optical axis direction, a delay mode setting means (CPU 1 and self-switch 18) which sets a time-limit delay mode wherein shutter releasing operation is performed a 1st time after releasing operation, a timer means (CPU 1) which measures time, and a control means (CPU 1) which places the timer means in operation at the same time with the release operation and then places the shake detecting means in operation a 2nd time later when the time-limit delay mode is set by the delay mode setting means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera shake correction camera for correcting camera shake and the like generated during photographing.

[0002]

2. Description of the Related Art Conventionally, a shake correction camera having a shake correction function has been proposed in order to correct camera shake during shooting. This is a correction provided in a part of the photographic lens system so as to cancel the shake based on the output of the shake detection sensor while the shutter is open when the shake detection sensor provided in the camera detects the shake. The lens is moved in a direction substantially perpendicular to the optical axis direction to correct the shake.

Since the shake detection sensor consumes a large amount of current, it is uneconomical to always start it. On the other hand, the shake detection sensor has a characteristic that its circuit is not stable and a normal signal cannot be output until a certain time has elapsed after the power is turned on. Since the time required for the circuit to stabilize is generally about 1 to 2 seconds, the shake detection sensor is activated when the half-press switch is turned on and the photographing process is started.

[0004]

However, in the above-described conventional shake correction camera, when the self-timer function of executing shooting after a predetermined time has elapsed from the release operation, the shake detection sensor is activated at the start of shooting processing. In the shooting in the self-timer mode, there is a problem that the circuit of the shake detection sensor remains in the energized state between the release operation and the shooting, and the current consumption of the camera increases.

The present invention has been made to solve the above problems, and an object of the present invention is to reduce the current consumption of the shake correcting means in a shake correcting camera having a time delay function. .

[0006]

In order to achieve the above object, the first solution means of the shake correction camera according to the present invention is as follows.
In order to correct shake generated by vibration, shake correction means for moving a shake correction lens in a direction substantially perpendicular to the optical axis direction, and shake detection means for detecting shake generated in a direction substantially perpendicular to the optical axis direction. A delay mode setting means for setting a timed delay mode for performing a shutter opening operation after a lapse of a first time from the release operation, a time measuring means for measuring time, and the delay mode setting means for setting the timed delay mode. In this case, the control means operates the timing means at the same time as the release operation and operates the shake detection means after a second time has elapsed.

A second solving means is characterized in that, in the first solving means, the second time measured by the time measuring means is shorter than the first time of the delay mode setting means.

A third solving means is the second solving means, wherein the first time of the delay mode setting means is the second time and a third time for stabilizing the shake detecting means. It is characterized by including and.

[0009]

In the solution means of the present invention, the shake detection means does not operate at the same time as the release operation at the time of photographing in the time delay mode, but operates after the elapse of the second time from the release operation. Therefore, it is possible to secure a time until the shake detecting means becomes stable and to reduce current consumption by the shake detecting means.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the shake correction camera according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of a shake correction camera according to the present invention. The taking lens system consists of four lenses 9, 10,
It is composed of 11 and 12. During focusing, the four lenses 9, 10, 11, 12 are collectively driven in the optical axis direction. In addition, at the time of shake correction, the lens 11
Only (hereinafter referred to as "correction lens 11") is driven in a direction substantially perpendicular to the optical axis direction (X-axis (horizontal) direction and Y-axis (vertical) direction).

The CPU 1 is a one-chip microcomputer and controls the entire sequence of the camera. CPU
Reference numeral 1 has a counter function, a timer function for measuring time, an A / D conversion function, and the like. The CPU 1 includes a main switch 15, a half-press switch 16, a release switch 17, a self switch 18, a distance measuring circuit 2,
The photometric circuit 19 is electrically connected.

The main switch 15 is a switch for starting the operation of the camera and has an on position and an off position,
Once set to the on position, the state of the on position is maintained until it is returned to the off position again. Half-push switch 16
Is a switch that is turned on by pressing the release button halfway. The release switch 17 is a switch that is turned on by fully pressing the release button. The self-switch 18 is a switch for selecting a self-timer mode (hereinafter referred to as “self-mode”). Here, whether or not the self mode is selected is displayed on a display unit (not shown) such as an LCD. The distance measuring circuit 2 is a circuit for performing distance measuring processing. The photometric circuit 19 is a circuit for performing photometric processing.

Further, the CPU 1 has a camera shake detection circuit 3,
4, motor drive circuits 5 and 6, and lens position detection circuit 1
3 and 14 are electrically connected. Further, motors 7 and 8 are connected to the motor drive circuits 5 and 6, respectively. The camera shake detection circuits 3 and 4 are sensors that detect the angular velocities in the X-axis and Y-axis directions generated by camera shake, respectively, and output values according to the magnitude of the angular velocities. The CPU 1 A / D-converts this output value, X-axis, Y-axis
Detects the amount of camera shake in the axial direction.

The CPU 1 issues a drive direction signal to indicate the drive direction, and further issues a drive duty signal to indicate the drive speed. The motor drive circuits 5 and 6 duty-drive the motors 7 and 8 in accordance with these signals. The rotations of the motors 7 and 8 are converted into linear motions by a drive mechanical system (not shown), and the correction lens 11 is moved in the X-axis and Y-axis directions so as to cancel the camera shake.

The lens position detection circuits 13 and 14 detect the position (movement amount) of the correction lens 11 in the X-axis and Y-axis directions, and depending on the movement amount of the correction lens 11 in the X-axis and Y-axis directions. Output pulse signal. The CPU 1 reads the position and movement amount of the correction lens 11 in the X-axis and Y-axis directions by counting the number of pulses of this pulse signal. Further, the moving speeds in the X-axis and Y-axis directions are calculated from the moving amount per fixed time.

FIG. 2 is a flow chart showing an embodiment of the operation of the shake correction camera according to the present invention. This flowchart is executed by a program built in the CPU 1. In this embodiment, the stabilization time of the camera shake detection circuits 3 and 4 is 2 seconds, the driving time of the correction lens 11 is 1 second, the distance measurement time is 500 mS, and the photometry time is 200 seconds.
mS, the centering time of the correction lens 11 is 500 m
S, Standby time in self mode is 10 seconds.

When the power is turned on and the main switch 15 is turned on, the process is started in step 200. First, in step 201, the inside of the CPU 1 is initialized.
Next, go through the loop of steps 202, 203 and 204,
Half-press switch 16 is turned on or self-switch 1
Wait for 8 to turn on or main switch 15 to turn off. When the half-push switch 16 is on in step 202, the process proceeds to step 205 and the photographing process is started. When the self switch 18 is turned on in step 203, the process proceeds to step 206 and the self setting process is started. When the main switch 15 is turned off in step 204, the process proceeds to step 207 and the process ends.

FIG. 4 is a flow chart showing an embodiment of the self-setting process in step 206 of FIG. When the self setting process is started in step 400, first, in step 401, it is determined whether or not the self mode is already set. If already set, the routine proceeds to step 402, where the self mode is cleared (released). On the other hand, when the self mode is cleared, the routine proceeds to step 403, where the self mode is set. That is, when the self switch 18 is turned on, the self mode is cleared when the self mode is already set, and the self mode is set when the self mode is released. Next, in step 404, when it is confirmed that the self-switch 18 is turned off, the process returns from step 405 to the flowchart of FIG.

FIG. 3 is a flow chart showing an embodiment of the photographing process in step 205 of FIG. First, when the photographing process is started in step 300, the process proceeds to step 301, and it is determined whether or not the self mode is set. When the self mode is cleared, the routine proceeds to step 302, where the camera shake detection circuits 3 and 4 are activated. Here, the camera-shake detection circuits 3 and 4 are not activated immediately before the camera-shake correction process (step 313) but are activated at this stage in order to stabilize the camera-shake detection circuits 3 and 4 by activating them early. is there. Also, step 301
If the self-mode is set in step 3,
After passing 02, the process proceeds to step 303. Thus, the reason why the camera shake detection circuits 3 and 4 are not activated at this point in the self mode is to reduce the current consumption due to the operation of the camera shake detection circuits 3 and 4.

In the next step 303, the distance measuring circuit 2 executes the distance measuring process, and in the next step 304, the light measuring circuit 19 executes the light measuring process. Then, in step 305, the taking lens systems 9 to 12 are driven to predetermined focus positions based on the distance measurement result of step 303.

Next, the routine proceeds to step 306, where it is determined whether the release switch 17 is on or off, and when it is off, it proceeds to step 307 to determine whether the half-push switch 16 is on or off. Step 30 if on
Returning to step 6, when it is off, the process proceeds to the next step 308, the operations of the camera shake detection circuits 3 and 4 are stopped, and in step 309 the taking lens systems 9 to 12 are returned to the initial positions,
In the next step 310, the process returns to the flowchart of FIG. 2 (no shooting is performed).

When it is judged at step 306 that the release switch 17 is on, the routine proceeds to step 311, where it is judged if the self mode is set. When the release switch 17 is turned on and the self mode is not set, the routine proceeds to step 312, where normal shooting is executed.

In step 312, centering processing of the correction lens 11 is executed. That is, the correction lens 11
Is driven to the reference position at the center of the optical axis. Correction lens 11
Are arranged at positions (ends) deviated from the center of the optical axis in the initial state. This is because 1) the stroke amount when driving the correction lens 11 is secured, 2) the lens position detection circuits 13 and 14 detect only the movement amount of the correction lens 11, and 3) the correction lens 11 is at the end. It is based on the reason such as contacting and keeping it stable.

Then, in the next step 313, the camera shake correction process is started. That is, based on the output results of the camera shake detection circuits 3 and 4, the correction lens 11 is moved in a direction substantially perpendicular to the optical axis direction so as to cancel the shake, and the shake is corrected. When the camera shake correction process is started, the shutter opening / closing operation is performed. In step 314, the shutter is opened, and in the next step 315, the exposure is waited for a predetermined exposure time based on the photometric result of step 304.
The shutter is closed at 6.

Then, in step 317, the camera shake correction process is stopped. Next, in step 318, the operations of the camera shake detection circuits 3 and 4 are stopped, and the process proceeds to step 319. In step 319, the taking lens systems 9 to 12 are returned to the initial positions on the optical axis (return processing), and the correction lens 11
Return to the initial position where it touched the end. Next step 320
When it is confirmed that the half-push switch 16 is off, the process proceeds to step 321 and returns to the flowchart of FIG.

On the other hand, in step 311, if the self mode is set when the release switch 17 is turned on, the process proceeds to step 322, and the self mode photographing is executed. First, the time is measured by the timer function of the CPU 1. First, step 3
At 22, a wait of 8 seconds is performed. When this time measurement ends, the process proceeds to step 323, and the camera shake detection circuits 3 and 4 are activated. Next, the process proceeds to step 324, and a standby for 2 seconds is performed. That is, the total time of steps 322 and 324 becomes the standby time in the self mode. After that, the process proceeds to step 312, and the photographing is started as described above.

In the self mode, from the start of the camera shake detection circuits 3 and 4 to the start of the camera shake correction process (step 313), 2 seconds at step 324, step 3
It took 500 mS for 12 and 2.5 seconds have passed in total.
Further, in the normal photographing, from the activation of the camera shake detection circuits 3 and 4 in step 302 to the start of the camera shake correction processing in step 313, 500 in step 303.
mS, 200 mS in step 304, 1 second in step 305, 500 mS in step 312, 2.2 in total.
Seconds have passed. Therefore, in any mode, the time for stabilizing the camera shake detection circuits 3 and 4 is secured. Furthermore, since the time is not longer than necessary, unnecessary current consumption does not occur.

Next, an embodiment for remote control shooting will be described. First, referring to FIG.
A receiver for receiving the information transmitted from the transmitter of the remote controller is electrically connected. When the receiving unit receives the information, remote control shooting is executed. Here, it is assumed that the standby time in the self mode in the remote control shooting of the embodiment is 3 seconds.

In FIG. 3, when the remote control photographing process is started in step 300, the same step 301 as described above is executed.
The processes up to 305 are performed, and then the process proceeds to step 311. If it is determined in step 311 that the mode is not the self mode, normal shooting is executed in step 312 and subsequent steps as described above. On the other hand, if it is determined in step 311 that the mode is the self mode, the process proceeds to step 322, and standby is performed for about 1 second. After this time has elapsed, step 32
In step 3, the image stabilization circuits 3 and 4 are activated, and the next step 3
At 24, a standby for 2 seconds is performed, and the process proceeds to step 312.
In this way, even in remote control shooting, 2.5 seconds are provided from the activation of the camera shake detection circuits 3 and 4 to the start of the camera shake correction processing (step 313) to stabilize the camera shake detection circuits 3 and 4. There is.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment,
Various modifications are possible without departing from the spirit of the invention. For example, although 2.2 seconds or 2.5 seconds is provided as the time until the camera shake detection circuits 3 and 4 are stabilized in the embodiment, the time is not necessarily limited to this value.
It differs depending on the characteristics of the camera shake detection circuits 3 and 4. Also,
The values of 10 seconds, which is the standby time in the self mode, and 3 seconds, which is the standby time in the self mode during remote control shooting, are mere examples and are not limited to these values.

[0031]

According to the shake correction camera of the present invention,
Since the shake detecting means is activated after the second time has elapsed from the release operation, it is possible to secure the time until the shake detecting means stabilizes and to reduce the current consumption by the shake detecting means.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of a shake correction camera according to the present invention.

FIG. 2 is a flowchart showing an embodiment of the operation of the shake correction camera according to the present invention.

FIG. 3 is a flowchart showing an embodiment of a photographing process in step 205 of FIG.

FIG. 4 is a flowchart showing an example of self-setting processing in step 206 of FIG.

[Explanation of symbols]

1 CPU 2 Distance measuring circuit 3,4 Camera shake detection circuit (X axis, Y axis) 5,6 Motor drive circuit (X axis, Y axis) 7,8 Motor (X axis, Y axis) 9, 10, 11, 12 Shooting lens system (11 correction lens) 13,14 Lens position detection circuit (X axis, Y axis) 15 Main switch 16 Half-press switch 17 Release switch 18 Self switch 19 Photometric circuit

Claims (3)

[Claims]
1. A shake correction unit for moving a shake correction lens in a direction substantially perpendicular to the optical axis direction to correct shake generated by vibration, and a shake generated in a direction substantially perpendicular to the optical axis direction. Shake detection means for detecting, delay mode setting means for setting a timed delay mode for performing a shutter opening operation after a lapse of a first time from the release operation, time measuring means for measuring time, and the delay mode setting means for the time limit A shake correction camera, comprising: a control unit that activates the timing unit at the same time as the release operation when the delay mode is set, and activates the shake detection unit after a lapse of a second time.
2. The shake correction camera according to claim 1, wherein the second time measured by the time measuring means is shorter than the first time of the delay mode setting means.
3. The method according to claim 2, wherein the first time of the delay mode setting means is the second time.
And a third time period for stabilizing the shake detecting means.
JP536394A 1994-01-21 1994-01-21 Shake correction camera Pending JPH07209688A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP536394A JPH07209688A (en) 1994-01-21 1994-01-21 Shake correction camera

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP536394A JPH07209688A (en) 1994-01-21 1994-01-21 Shake correction camera
US08/377,066 US5659807A (en) 1994-01-21 1995-01-23 Vibration compensation camera having reduced power consumption in a self-timer mode and a bulb mode

Publications (1)

Publication Number Publication Date
JPH07209688A true JPH07209688A (en) 1995-08-11

Family

ID=11609092

Family Applications (1)

Application Number Title Priority Date Filing Date
JP536394A Pending JPH07209688A (en) 1994-01-21 1994-01-21 Shake correction camera

Country Status (1)

Country Link
JP (1) JPH07209688A (en)

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