JPH07295043A - Image pickup device provided with image blurring correcting function - Google Patents

Abstract

PURPOSE:To actuate a shake correcting mechanism so that the operation of a film loading motor and a lens driving motor is not hindered by inhibiting the operation of a correcting device at the time of driving the film loading motor. CONSTITUTION:In the case a specified mode is set, a shake amount detecting means 1 is started by turning on an SW1, and shake correcting operation is performed based on the detected result by the means 1 by turning on an SW2. When a film driving signal (outputted at the time of winding and rewinding the film) is outputted, the state of a vibration-proof(shake correction) driving signal is confirmed before driving the film, and the film is driven in the case the vibration-proof (shake correction) driving signal is off, and the film is driven by temporarily stopping vibration-proof(shake correction) driving in the case the vibration-proof(shake correction) driving signal is on. The vibration-proof(shake correction) driving signal is not received in the midst of driving the film. When driving the film is finished, the state of the vibration-proof(shake correction) driving signal is confirmed again, and the vibration- proof(shake correction) driving is started when the vibration-proof(shake correction) driving signal is on.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image pickup device such as a camera incorporating a shake prevention device for correcting image shake caused by camera shake.

[0002]

2. Description of the Related Art Conventionally, in a photographing apparatus typified by a camera, an AF apparatus has been generally used, and it has been proposed to add a shake correcting apparatus for correcting an image shake during photographing. Japanese Patent Laid-Open No. 2-66535 (an example of a single-lens optical system) is known as a device for detecting a camera shake caused by camera shake and the like, and correcting a movement of an image by driving a correction optical system. ing.

[0003]

In such an image pickup apparatus, when a film load (feed) motor is driven (when film is wound or rewound) or when a lens drive motor is operated (when a focusing lens is driven, an electric zoom is performed). [Variable magnification] When driving the shake correction drive mechanism (when driving the lens), the drive current may increase, and the film winding and rewinding speed may decrease, or the AF drive speed and electric zoom drive speed may decrease. .

In order to operate the film load motor and the lens drive motor normally, the electric power that can be supplied from the battery must be increased. Therefore, there is a drawback that the battery becomes large. The present invention has been made in view of the above problems,
An object of the present invention is to provide an image pickup device capable of operating a shake correction drive mechanism so as not to hinder the operations of a film load motor and a lens drive motor.

[0005]

The image pickup apparatus according to the present invention has the following configuration. An image pickup apparatus according to claim 1, a detection apparatus for detecting shake, a correction apparatus for correcting shake based on a detection result of the detection apparatus at least during exposure, a feeding apparatus for feeding a film, and a feeding apparatus. And a control device for inhibiting the operation of the correction device while the device is operating.

In the image pickup apparatus according to the second aspect, the prohibition of the operation of the correction apparatus is canceled as the feeding apparatus finishes the operation,
The correction device can be re-operated. The image pickup device according to claim 3 includes a switch that outputs an operation start signal for operating the correction device, and accepts the operation start signal even if the switch outputs the operation start signal while the feeding device is operating. Absent.

According to a fourth aspect of the present invention, there is provided an image pickup device which detects a shake, a correction device which corrects a shake based on a detection result of the detector at least during exposure, and a focusing operation and a zooming operation. It includes an operating device that performs one and a control device that prohibits the operation of the correction device while the operating device is operating.

[0008]

According to the present invention, the following actions are exhibited. Claim 1
According to this, since the operation of the correction device is prohibited when the film load motor is driven (when the film feeding device is operating), the respective operations are not performed in parallel, and there is no need to drive the film load motor. There will be no trouble. Moreover, since it is not necessary to increase the power supplied to the battery, the battery does not become large.

According to the second aspect of the present invention, the prohibition of the operation of the correction device is released when the driving of the film load motor is completed, and the operation of the correction device is enabled.
No special operation for N / OFF is required. According to claim 3, a switch for outputting an operation start signal for operating the correction device is included, and the operation start signal is output by the switch when the film load motor is driven (while the feeding device is operating). Even if so, since the signal is not accepted, each operation is not performed in parallel,
There is no problem in driving the film load motor. Moreover, since it is not necessary to increase the power supplied to the battery, the battery does not become large.

According to a fourth aspect of the present invention, a detecting device for detecting shake, a correcting device for correcting shake based on a detection result by the detecting device, and an operating device for performing either focusing operation or zooming operation. Since the operation of the correction device is prohibited while the operating device is operating, the respective operations are not performed in parallel, and the operation of the operating device (lens driving) may be hindered. Absent. Further, since it is not necessary to increase the power supplied to the battery, the battery does not become large.

[0011]

Embodiments will be described in more detail below with reference to the drawings. 1 to 5 are views showing an embodiment of an image stabilization (shake correction) device according to the present invention.
FIG. 1 shows a schematic diagram of a camera provided with an image stabilization (shake correction) drive switch. In this embodiment, the anti-vibration (shake correction) drive switch: 21 is provided on the lens barrel of the camera: 22, but this is not the only option. Image stabilization (shake correction) drive switch: 21
By turning on, the image stabilization (shake correction) drive start signal is output. The image stabilization (shake correction) drive start signal is taken in by the CPU: 23 provided in the lens and sent to the CPU: 24 provided in the camera.

FIG. 2 shows an embodiment of an image pickup apparatus having an image blur correction function according to the present invention.
First, the outline of the internal structure of a suitable still camera to which the present invention is applied will be briefly described. In the figure, reference numeral 1 is a shake amount detecting means which is a shake detecting means for detecting a shake situation associated with camera shake or the like, and is an operation member such as the camera 31.
Shutter release button (not shown) provided on the upper end of the
The half-push switch SW1 is turned on by the half-push operation of, the CPU 2 provided in the camera activates the shake amount detecting means 1, and after a predetermined time elapses, the shake amount detecting means 1 becomes the camera body. It is designed to detect the amount of shake.

Here, the CPU 2 is used as shake detection control means together with the half-push switch SW1 of the release button. Reference numeral 3 in the drawing denotes a film sensitivity detecting means for detecting the ISO sensitivity of the film loaded in the camera. Reference numeral 4 denotes shake correction means provided in the camera, and by fully pressing a release button (not shown), the full-press switch SW2 is turned on, and the CPU 2 causes the shake amount detecting means 1 to operate.
Correction by the detection (amount of shake) of the image pickup device is instructed to the shake correction unit 4, and the shake correction unit 4 drives the drive system 5 of a part of the optical system (shake correction optical system L3) of the photographing optical system L1. It is well known that the shake correction optical system L3 can be shifted in the vertical direction (direction perpendicular to the optical axis) in the figure, and the drive can correct the shake of the subject image on the film surface of the entire photographing optical system. Is.

Reference numerals 6 and 7 are known distance measuring means and light measuring means for measuring the distance to the object and the brightness of the object. The CPU 2 causes the distance measuring means to be operated by half-pressing the release button (SW1 ON). 6 and the photometric means 7 are activated,
Upon activation thereof, the respective means 6 and 7 perform distance measurement and photometry. Reference numeral 8 is a focusing control means, and the CPU 2 instructs the focusing control means 8 to perform auto-focusing (automatic focusing) in response to the output (distance measurement result) signal of the distance measuring means 6, and the focusing control means 8 receives this instruction. Driving system 9 for focusing optical system L2 (focusing means)
It is also well known that the optical system L2 is driven via the, and auto-focusing is performed by this driving.

Reference numeral 10 is an exposure control means, and the CPU 2 instructs the exposure control means 10 to control the aperture corresponding to the aperture value in response to the output (photometry result) signal of the photometry means 7. The exposure control means 10 is a diaphragm member 11.
The exposure is controlled by driving and controlling. The general operation flow of the device having the above-described configuration is as follows. Here, it is assumed that the image stabilization (shake correction) drive switch 21 is turned on. First, when the SW1 is turned on, the shake amount detecting means is activated, and sampling of the sensor signal is executed. Subsequently, after the photometry / distance measurement operation, the exposure calculation process, and the focusing lens drive amount calculation, when SW2 is turned on, the focusing drive and the sampling of the sensor signal are finished, and the shake correction is started based on the sampling result. After this, the shutter is opened and the exposure operation is started, and the shutter is closed after waiting a predetermined time. Then, after that, the film is wound by one frame. As will be described later, shake correction is not performed in parallel during focusing driving and film winding / rewinding. If the image stabilization (shake correction) drive switch 21 is off, the shake amount detecting means and shake correction operation are not performed.

Incidentally, the "shake correction operation" in the present invention can include any of the following two embodiments. [1] Anti-vibration (shake correction) drive switch: A device that outputs an anti-shake (shake correction) drive start signal only while 21 is continuously turned on, and performs the shake correction based on the signal.
[2] Anti-vibration (shake correction) drive switch: 21 is turned on once
By doing so, the shake correction operation can be set as a mode. In this case, if the mode is set, SW1
When the switch is turned on, the shake amount detecting means is activated, and when the switch SW2 is turned on, the shake correction operation is performed based on the detection result. The image stabilization (shake correction) drive start signal corresponds to the signal output when the SW2 is turned on.

FIG. 3 shows a flow chart of the image stabilization (shake correction) drive when the film is driven in this embodiment. It is assumed that this flow starts as the film feeding (winding / rewinding) operation is executed. In FIG. 3, when the film drive signal (outputted at the time of film winding and rewinding) is output in step S1, the state of the image stabilization (shake correction) drive signal is confirmed before driving the film in step S2. Here, when the image stabilization (shake correction) drive signal is OFF, the film is driven, but when the image stabilization (shake correction) drive signal is ON, the image stabilization (shake correction) drive is temporarily stopped,
The film is driven in step S4. The image stabilization (shake correction) drive signal is not accepted while the film is being driven. When the film driving is completed in step S4, step S5
Check the state of the image stabilization (shake correction) drive signal again.
If the image stabilization (shake correction) drive signal is ON, the image stabilization (shake correction) drive is started in step S6.

As described above, since the image stabilization (shake correction) drive signal is received again after the film is driven,
Even when shooting with the anti-shake (shake correction) drive switch turned on, the anti-shake (shake correction) operation is stopped only while the film is being driven, and when the film drive is complete, the anti-shake (shake correction) is automatically performed again. ) The operation can be started. Since the image stabilization (shake correction) drive drives the image stabilization (shake correction) optical system according to the size of the camera shake, when an excessive camera shake is detected, a large amount of power is required for the drive mechanism. When further film drive is performed during image stabilization (shake correction) drive, if excessive camera shake is detected, the film drive speed becomes slower or the image stabilization (shake correction) drive mechanism does not operate normally. There is.

Since it is unthinkable to take a picture while the film is being driven, it is better not to perform the image stabilization (shake correction) operation while the film is being driven, as shown in this embodiment. By the way, when the image stabilization (shake correction) operation is not performed, it is not limited to during film driving. FIG. 4 shows a flowchart when the autofocus drive is in progress, and FIG. 5 shows a flowchart when the electric zooming drive is in progress.

In FIG. 4, the CPU 2 commands the focusing control means 8 to perform autofocus (automatic focusing) in accordance with the output (distance measurement result) signal of the distance measuring means 6,
It is assumed that this flow starts as the focusing control unit 8 drives the optical system L2 via the drive system 9 (focusing unit) of the focusing optical system L2 by this command. In this case, it is the same as when the film load motor is being driven.
In step S14, it is judged whether or not the focusing optical system L2 is driven [out of focus]. If it is driven [out of focus], the interruption of the image stabilization drive signal (that is, the Even if a vibration drive signal is output, anti-vibration drive is prohibited.)
Then, when the autofocus drive is completed, this image stabilization drive signal is accepted. Therefore, the operations of the autofocus drive and the image stabilization drive are not performed in parallel, and the autofocus drive is not hindered at all. In the above-described embodiment, the auto focus drive is targeted, but the lens drive by manual focus (manipulating the manual focusing ring from the outside) based on the manual operation of the photographer is also the target of the present invention.

In FIG. 5, a zooming control means (not shown) is instructed to perform zooming (magnification), and this command causes the zooming control means to drive the zooming optical system via a drive system (zooming drive means) of the same optical system. Along with driving
This flow starts. In this case, the image stabilization (shake correction) drive is temporarily stopped only during the electric zooming drive, and the image stabilization (shake correction) drive is automatically started again after the electric zooming drive. Therefore, the zooming drive and the anti-vibration drive are not performed in parallel, and the zooming drive will not be hindered. In the above-described embodiment, the electric zooming (lens driving by the motor) is targeted, but the lens driving by manual zooming based on the manual operation of the photographer is also a target of the present invention.

[0022]

As described in detail above, according to the present invention, the following effects are achieved. According to the first aspect, since the operation of the correction device is prohibited when the film load motor is driven (when the film feeding device is operating), the respective operations are not performed in parallel, and the film load motor is driven. There will be no trouble with. Moreover, since it is not necessary to increase the power supplied to the battery, the battery does not become large.

According to the second aspect of the present invention, the prohibition of the operation of the correction device is released when the driving of the film load motor is finished, and the operation of the correction device is enabled again.
No special operation for N / OFF is required. According to claim 3, a switch for outputting an operation start signal for operating the correction device is included, and the operation start signal is output by the switch when the film load motor is driven (while the feeding device is operating). Even if so, since the signal is not accepted, each operation is not performed in parallel,
There is no problem in driving the film load motor. Moreover, since it is not necessary to increase the power supplied to the battery, the battery does not become large.

According to a fourth aspect of the present invention, there is provided a detecting device for detecting shake, a correcting device for correcting shake based on a detection result of the detecting device at least during exposure, and any one of focusing operation and zooming operation. Since the operation device that performs the operation and the operation of the correction device are prohibited while the operation device is operating, the operations are not performed in parallel, and there is no hindrance to the operation of the operation device (lens drive). Never come Also,
Since it is not necessary to increase the power supplied to the battery, the battery does not become large.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a camera with a shake correction function according to the present invention.

FIG. 2 is a diagram showing an internal structure of an image pickup apparatus having an image blur correction function according to the present invention.

FIG. 3 shows a flowchart of image stabilization (shake correction) driving when driving a film according to the present invention.

FIG. 4 shows a flow chart of image stabilization (shake correction) drive during autofocus drive according to the present invention.

FIG. 5 shows a flowchart of image stabilization (shake correction) drive during electric zooming drive according to the present invention.

[Explanation of symbols]

 1 shake amount detection means (shake detection means) 2 CPU (control means) 3 film sensitivity detection means 4 shake correction means 5 shake correction drive system 6 distance measuring means 7 photometry means 8 focusing control means 9 focusing (focusing) drive system 10 Exposure control means L1 Photographic optical system L2 Focusing optical system L3 Shake correction optical system (Shake correction lens)

Claims (4)

[Claims] 1. A detection device for detecting a shake, a correction device for correcting a shake based on a detection result of the detection device at least during exposure, a feeding device for feeding a film, and the feeding device. An image pickup apparatus having an image blur correction function, comprising: a control device that prohibits the operation of the correction device while the image pickup device is operating. 2. The control device releases the prohibition of the operation of the correction device as the feeding device ends the operation, and enables the operation of the correction device again. An image pickup apparatus having the image blur correction function described in 1. 3. A switch for outputting an operation start signal for operating the correction device, wherein the control device outputs the operation start signal by the switch while the feeding device is operating. The image pickup apparatus having the image blur correction function according to claim 1, characterized in that the signal is not accepted. 4. A detector for detecting shake, a corrector for correcting shake based on a detection result of the detector at least during exposure, and an operating device for performing either focusing operation or zooming operation. An image pickup apparatus having an image blur correction function, comprising: and a control device that prohibits the operation of the correction device while the operation device is operating.