JPH0980511A - Vibrationproof camera and vibrationproofing lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a vibrationproof lens compact and to stably transmit vibrationproof information. SOLUTION: A camera is constituted so that a camera body 1 is provided with a shake detection means 3 and a digitizing means 4 and an interchangeable lens 2 is provided with a shake correction means 7 changing an optical axis and a driving means 6 driving it. Besides, it is provided with an interface means 5 for transferring plural digital signals between the body 1 and the lens 2. Based on the plural digital signals transmitted from the body 1, the correction means 7 is driven. Besides, it is provided with a transmission means resolving the plural digital signals every bit, transmitting the high-order bits of the respective digital signals in a time sharing manner first and continuously successively transmitting the low-order bits thereof in a time sharing manner when the plural digital signals for vibrationproof use are transmitted to the lens 2 from the body 1. By transmitting the digital signals, a noise margin is enhanced and the error of transmission timing is prevented from being caused.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration camera and an anti-vibration lens for optically correcting camera shake caused by camera shake or the like.

[0002]

2. Description of the Related Art A conventional anti-vibration camera and anti-vibration lens for optically correcting camera shake due to camera shake and the like have a shake detection means for detecting shake and a correction optical system for correcting shake in a single anti-shake lens. It was configured to be placed in.

Further, Japanese Patent Laid-Open No. 5-66445 discloses that
The shake correction optical system and the driving means are arranged on the interchangeable lens side, and the detection means for detecting shake is arranged on the camera body, respectively, and the shake compensation output is transmitted from the camera body to the interchangeable lens side to perform the shake compensation operation. An anti-vibration camera and a shake detection camera are disclosed.

[0004]

However, in this case, in the structure in which the shake detection means for detecting the shake of the former and the correction optical system for correcting the shake are arranged in one shake-proof lens, the shake-proof function is provided. In order to realize an interchangeable lens system, all interchangeable lenses must have a shake detection unit and a shake correction optical system, which makes it difficult to downsize the vibration-proof lens and raises the cost of the entire system.

Further, the latter proposal by Japanese Patent Laid-Open No. 5-66445 aims to improve these points by disposing the interchangeable lens side and the camera body side separately, but from the camera body side There is a problem that a specific information transmission form to the image stabilizing lens side is not defined.

Further, in order to transmit the image stabilization information for each pitch and yaw between the camera body and the image stabilization lens, it is necessary to dispose a dedicated signal pin, which causes a problem of cost increase.

Accordingly, an object of the present invention is as follows.
By arranging each means required for image stabilization separately on the lens side and camera body, the image stabilization lens can be made compact and the cost of the entire system can be reduced, while stabilizing the transmission of image stabilization information such as signals related to multidirectional image stabilization. The object is to provide an anti-vibration camera that can achieve the desired characteristics.

A second object of the present invention is to provide an image stabilizing camera capable of ensuring high speed of information transmission and speeding up drive for image stabilization.

An object of the invention described in claim 3 is to provide an anti-vibration camera which improves the anti-vibration effect during the exposure period.

An object of the invention described in claim 4 is to provide a vibration-proof lens which can make the vibration-proof lens compact, the stability of the vibration-proof information transmission, and the system developability.

[0011]

In order to achieve the above object, the present invention provides a camera body with a shake detecting means and a digitizing means for digitizing a detection signal, and a shake correcting means and its driving on the interchangeable lens side. A plurality of digital signals as image stabilization information are disassembled bit by bit and the upper bits are transmitted first in a time division manner to an image stabilization camera in which a means is provided and the interchangeable lens is connected to the camera body by an interface means capable of exchanging digital signals. Then, a transmission means for sequentially performing time division transmission toward the lower bits is provided to improve the noise margin and prevent the occurrence of transmission timing error.

Further, the interface means is configured to be common to the signal pin for performing other information between the lens and the camera, and during the exposure period, the time for occupying a plurality of digital signal / signal pins for image stabilization is set to be shorter than that for other periods. A transmission control means for increasing the length is provided so that a particularly high image stabilizing effect can be obtained during exposure.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION A structure for realizing the object of the invention according to the present application is, as described in claim 1, a shake detecting means for detecting a plurality of directions of shake in a camera body and a plurality of directions from the shake detecting means. Is provided with a digitizing means for converting the output signal of the digital signal into a plurality of digital signals, a shake correcting means for changing the optical axis in a plurality of directions on the interchangeable lens side, and a driving means for driving the shake correcting means, and the camera body and the interchangeable lens. Between the plurality of digital signals, the lens-interchangeable image stabilizing camera is configured to drive the shake correction unit based on the plurality of digital signals sent from the camera body. When transmitting a digital signal from the camera body to the interchangeable lens, multiple digital signals are decomposed bit by bit, and the upper bits of each digital signal In antivibration camera, characterized in that it comprises a transmission means and subsequently to split the transmission and sequentially time-division transmission toward the lower bits.

According to this configuration, the transmission end timing error of a plurality of digital signals is reduced and the stability of the image stabilization information is obtained.

A specific configuration for realizing the object of the invention according to the present application is, as described in claim 2, in claim 1, wherein the driving means on the interchangeable lens side is a high-order bit of a transmitted digital signal. In the anti-vibration camera, driving of an amount corresponding to is started without waiting for transmission of lower bits.

According to this structure, the speed of correction driving can be increased.

Another configuration for achieving the object of the invention according to the present application is, as described in claim 3, a shake detecting means for detecting a plurality of directions of shake in the camera body and a plurality of outputs from the shake detecting means. Between the camera body and the interchangeable lens, a digitalizing means for converting the signal into a plurality of digital signals is provided, a shake correcting means for changing the optical axis in a plurality of directions on the interchangeable lens side, and a driving means for driving the shake correcting means are provided. In the anti-vibration camera with interchangeable lenses, which has an interface unit capable of transmitting and receiving the plurality of digital signals and is configured to drive the shake correction unit based on the plurality of digital signals sent from the camera body, Other interface means for transmitting other information, and the plurality of digital signals for image stabilization occupy the signal pins during the exposure period. In antivibration camera, characterized in that it comprises a transmission control means for longer than the other period time.

According to this structure, the image stabilizing effect during the exposure period can be improved.

Another structure for achieving the object of the invention according to the present application is, as described in claim 4, in a vibration-proof lens mounted on a camera body, a shake correcting means for changing an optical axis, and a camera body. An anti-vibration lens having interface means for transmitting and receiving a digital signal in combination with the driving means, and driving means for driving the shake correcting means by a digital signal sent from the camera body via the interface means.

According to this structure, it is possible to achieve the downsizing of the vibration proof lens and obtain the stability of the vibration proof information transmission.

[0021]

【Example】

(First Embodiment) An embodiment of the present invention will be described below with reference to the drawings. 1 to 5 show the first embodiment. FIG. 1 is a block diagram showing the main configuration of an image stabilization camera according to the first embodiment of the present invention. FIG. 2 is a perspective view showing a main part of the image stabilization camera shown in FIG. FIG. 3 is a block diagram of the digitized transmission circuit shown in FIG. FIG. 4 is a timing chart of the digitized transmission circuit shown in FIG. FIG. 5 is a waveform diagram of the angular displacement signal shown in FIG.

In FIG. 1, reference numeral 1 is a camera body, 2 is an interchangeable lens configured to be attachable to and detachable from the camera body 1, and the camera body 1 and the interchangeable lens 2 are coupled by an interface means 5 so that digital signals can be exchanged. . Reference numeral 3 denotes a shake detection unit that detects shake of the camera body 1 and outputs a signal indicating the shake as an analog signal. Numeral 4 is a digitizing means for digitizing the output signal of the shake detecting means 3.

The signal output from the digitizing means 4 and indicating the shake which is digitized is the interface means 5.
Is transmitted to the interchangeable lens 2 via. 6 is a drive means, 7
Is a shake correction unit, and the drive unit 6 drives the shake correction unit 7 to cancel the shake based on the signal indicating the shake received from the interface unit 5.

Next, the basic operation of the above configuration will be described. When the camera shakes due to camera shake or the like, the shake detecting means 3 built in the camera body 1 outputs an analog signal indicating the shake. This analog signal is A / D converted by the digitizing means 4 and sent to the interchangeable lens 1 via the interface means 5 as a digitized signal indicating a shake. The drive unit 6 in the interchangeable lens 2 drives the shake correction unit 7 based on the digitized signal so as to cancel the shake.

The shake correction operation is performed in this way. In this case, however, since the interchangeable lens 2 is configured to be detachable, the signal passing through the interface means 5 which tends to be unstable is digitized. The noise margin is improved, high-precision transmission of the reference voltage is not required, the influence of contact resistance is reduced, and stable operation can be maintained.

Further, the shake correction operation will be described in detail with reference to an actual example using a combination of a specific AF single lens reflex camera and an interchangeable lens shown in FIG.

In FIG. 2, reference numeral 8 denotes a camera body corresponding to the camera body 1 of FIG. 1, and 9 denotes an image stabilizing lens having a built-in shake correction optical system 31 corresponding to the interchangeable lens 2 of FIG.

First, in the construction on the camera body 8 side, the angular displacement detecting devices 10p and 10y are shake detecting means, and the camera body pitch direction (arrow A in FIG. 2) and yaw direction (arrow B in FIG. 2). ), The angular displacement detection device 10p detects the pitch direction and the angular displacement detection device 10y detects the yaw direction.

The angular displacement detectors 10p and 10y have an angular velocity sensor and an integrator, and the output signal is an analog signal indicating the angular displacement obtained by integrating the shake velocity. A vibrating gyro is used as the angular velocity sensor (the vibrating gyro and the integrator are well-known circuits, so the description thereof is omitted here). The reason why the angular displacement detectors 10p and 10y are composed of a vibration gyro and an integrator is that they have excellent detection characteristics in the low range of vibration. It should be noted that the angular displacement detection devices 10p and 10y may of course have other configurations. For example, the angular displacement detection device using a floating body disclosed in Japanese Patent Laid-Open No. 5-66445 does not require an integrator. There are advantages. Such an angular displacement detection device 10p, 10
From y, a pitch direction angular displacement signal 11p and a yaw direction angular displacement signal 11y are output, respectively.

A digital transmission circuit 12 corresponds to the digitizing means of FIG. 1 and constitutes a transmitting means. This digitized transmission circuit 12 has a pitch direction angular displacement signal 11p.
And A / D conversion of the yaw direction angular displacement signal 11y,
The digitalized set of angular displacement signals is sent to the output line 13 in a time division manner.

The detailed structure of the digital transmission circuit 12 will be described with reference to the block diagram of FIG. 3 and the timing chart of FIG.

In FIG. 3, 13p is an A / D converter for pitch,
Reference numeral 13y denotes an A / D converter for yaw, which has a 16-bit configuration and has a value of "φφφφ to FFFF". Since the angular displacement signal has positive and negative values, a constant offset voltage is set as the reference voltage of the angular displacement signal, and “FFFF to 8φ” is set.
“φφ” represents positive, and “7FFF to φφφφ” represents negative.

Reference numerals 14p and 14y in FIG. 3 denote parallel-serial converters which convert parallel signal outputs from the A / D converters 13p and 13y into serial signals. Reference numeral 15 is a data selector for selecting which signal of the parallel-serial converters 14p and 14y is output as data. 16 is a data controller (CTRL), which is an A / D
It has functions of conversion timing instruction (hereinafter referred to as sampling), parallel-serial conversion timing instruction, output data selection instruction, and data ready signal output described later. Reference numeral 17 is a master clock for setting the timing of the entire digitization transmission circuit 12.

FIG. 4 is a timing chart of the circuit of FIG. 3, in which 18 is a clock signal of the master clock 17,
It is a reference clock for timing control of the digitized transmission circuit 12, and is input to the data controller 16. The data controller 16 frequency-divides the clock signal 18 by a predetermined amount and outputs sampling pulses 19 at predetermined intervals. The sampling pulses 19 are input to the A / D converters 13p and 13y. When the sampling pulse 19 is input, the A / D converter starts A / D conversion and ends the A / D conversion operation within a predetermined time.

After A / D conversion, the data controller 16 sets the select signal 20 to the H level, and the data selector 1
5 is switched to the pitch side signal. Reference numerals 21 and 22 denote serialized signals. The serialized signal 21 is sent to the parallel-serial converter 14p and the serialized signal 22 is sent to the parallel-serial converter 14y.

A timing clock 24 is used to set the timing of data transfer to the image stabilizing lens 9. Reference numeral 25 is a data ready signal, which is H during the data transmission period to the image stabilizing lens 9.
Level. Reference numeral 23 is a data signal, which alternately sends a pitch side signal and a yaw side signal in synchronization with the timing clock 24.

When the serialized signals 21 and 22 are input to the parallel-serial converters 14p and 14y, the parallel-serial converters
The serial converters 14p and 14y are A / D converted 1
The 6-bit data is sequentially transmitted from the upper bit in synchronization with the UP trigger of the serialization signal. The signal thus sent out is selected as pitch or yaw by the data selector 15 and output as the data signal 23.

The above sequence is alternately performed for the pitch side and the yaw side, and all data (32b including pitch and yaw) is combined.
When the transmission of (it) is completed, the data ready signal 25 is set low and the sequence is completed. With the above configuration, as the angular displacement signal 26, the pitch side signal and the yaw side signal are alternately transmitted, as shown in the lowermost stage of FIG. In this case, the signal corresponding to the output line 13 shown in FIG. 2 is a set of the data signal 23, the timing clock 24, and the data ready signal 25.

In this embodiment, in order to simplify the circuit and stabilize the signal, the output line 13 is composed of the above three signals.
However, it is of course possible to form a single signal line. In order to form a single signal line, there are problems of discrimination between data transmission and non-transmission, and data timing setting at the time of transmission, but the following means can be considered as a solution.

1. Example of data timing setting Predetermine the transmission rate on the camera side and the lens side.

Alternatively, before the actual image stabilization operation, the camera transmits a pulse at a transmission rate to be used for a predetermined period, and thereafter, the lens side receives a signal at that transmission rate.

The former can simplify the circuit, but the latter is more preferable because the flexibility of the combination of the camera lens is increased. Various other methods are possible.

2. Example of discriminating between data transmission and non-transmission: A predetermined prefix signal is output before data transmission.

Alternatively, the signal line is made into three states, and the time of use is discriminated from the following states, for example.

1 2 3 4 H 5V 5V 5V 5V L 0V −5V 0V 0V Not used High Impedance 0V −5V 12V Dance (for positive theory) Of the above, the one that outputs the front signal is the front signal analysis. Although a circuit is required, it is possible to process only ordinary digital signals. On the other hand, the three-state type requires a circuit for discriminating between a normal digital signal and a non-digital signal state, but since all sent digital signals are data, the data transmission rate is improved and the front signal analysis circuit is unnecessary. There are advantages such as. These selections can be made based on each situation and advantages and disadvantages so as to configure an optimal system.

Next, regarding the constitution on the side of the image stabilizing lens shown in FIG. 2, reference numeral 27 is a contact for electrically connecting the camera body 8 and the image stabilizing lens 9. In this embodiment, the signal contact 27 is provided in addition to the contact normally provided in the AF single-lens reflex camera widely used in recent years. Incidentally, the power supply line and the ground line conventionally share a contact.

Reference numeral 28 is a signal line, and 29 is a drive controller. The angular displacement signal 26 sent from the camera body 8 through the contact 27 is input to the drive controller 29 through the signal line 28. The drive controller 29 separates the angular displacement signal 26 into pitch and yaw by a process reverse to that of the digitization transmission circuit 12 so as to start driving the amount corresponding to the upper bit without waiting for the transmission of the lower bit, The pitch side drive signal 30p and the yaw side drive signal 30y are output.

Reference numeral 31 denotes a correction optical system, which has the effect of tilting the photographing optical axis of the image stabilizing lens 9 by displacing it in the direction perpendicular to the optical axis. Reference numeral 32p is a pitch direction drive means, which displaces the correction optical system 31 in the direction of arrow C in FIG. 2 based on the pitch side drive signal 30p. Reference numeral 32y denotes a yaw direction drive means which displaces the correction optical system 31 in the direction of arrow D in FIG. 2 based on the yaw side drive signal 30y.

In the structure of the anti-vibration lens 9 of FIG. 2, the contact 27 is the interface means 5 of FIG. 1, the drive controller 29 is the drive means 6 of FIG. 1, the pitch direction drive means 32p and the yaw direction drive means 32y. And correction optical system 31
3 correspond to the shake correction means 7, respectively.

Regarding the overall shake correction operation of the image stabilization system on the camera body side and the image stabilization lens side configured as described above, when the camera body 8 is shaken due to camera shake or the like, the angular displacement detecting device 10p is used. , 10y as angular displacement components corresponding to the pitch direction and the yaw direction,
Pitch direction angular displacement signal 11p and yaw direction angular displacement signal 1
1y is output. Each angular displacement signal is digitized transmission circuit 1
2, and the digitized transmission circuit 12 samples the pitch direction angular displacement signal 11p and the yaw direction angular displacement signal 11y at predetermined intervals (Δt) and performs A / D conversion, and outputs the angle variation signal 26 as an output line 13 Send on top in time division.

The angular displacement signal 26 is transmitted to the vibration proof lens 9 side through the contact 27, and is input to the drive controller 29 through the signal line 28. The drive controller 29 separates the input angular displacement signal 26 into a pitch side drive signal 30p and a yaw side drive signal 30y, and inputs them to the pitch direction drive means 32p and the yaw direction drive means 32y to drive the correction optical system 31. Perform shake correction.

In this way, the shake correction operation is performed. Regarding the effect of digitized transmission in the correction operation,
Further verification with reference to the angular displacement signal waveform diagram of FIG. 5 shows that in FIG. 5, 33 is the pitch angle displacement signal waveform (same in the yaw direction), 34 is a digital signal sampled at Δt intervals (16 bit data), Reference numeral 35 indicates a noise component during transmission (external noise, temperature drift, etc.), 36 indicates an H level range during digital transmission, and 37 indicates an L level range.

As is apparent from FIG. 5, in the case of the conventional analog transmission, the noise component 35 and the angular displacement signal waveform 33 are actually driven by the added waveform 38, so that a drive error corresponding to the noise component 35 is generated. Will occur,
In the digital transmission of this embodiment, since the transmission is performed only by the binary judgment of the H level and the L level, the digital data 34 of the drive signal can be surely reproduced without being affected by the noise component 35.

As described above, according to the present embodiment, the digitized time division transmission improves the noise margin, reduces the number of signal pins by the time division transmission of the pitch and yaw signals, and provides the dedicated signal pin 27. By improving the transmission speed and digitizing the signal, it is possible to change the image stabilization characteristics very easily from the camera side, and the drive of the correction optical system can be used for applications other than image stabilization (e.g. There are many advantages such as the fact that it can be used for software, etc., and the high-precision reference voltage transmission mechanism required for analog signal transmission is unnecessary. (Second Embodiment) Next, a second embodiment of the present invention will be described. In the second embodiment, the contact 2 is used as the interface means.
This is an example in which the conventional contact is also used without providing 7. FIG. 6 is a block diagram showing the configuration of the image stabilization camera according to the second embodiment of the present invention.

In FIG. 6, reference numeral 48 is a camera body, and 49 is a vibration-proof lens. A microcomputer 52 for controlling the sequence of the entire camera is built in the camera body 48. Reference numeral 50 denotes a shake detecting means having the same configuration as that of the first embodiment. Reference numeral 51 is a digitizing means, which digitizes the analog signal input from the shake detecting means and inputs it to the microcomputer 52. At this time, although serial data is used in the first embodiment, the input to the microcomputer 52 can be configured as serial or parallel.

Reference numeral 53 is an interface means, which is a conventional A
It is a contact that is usually provided in the F camera. Reference numeral 54 is a microcomputer on the side of the image stabilizing lens, which controls the entire image stabilizing lens. Reference numeral 55 is a drive unit that drives the shake correction unit 56.
FIG. 7 is a diagram showing a communication sequence during shooting standby of the second embodiment shown in FIG. FIG. 8 is a diagram showing a communication sequence at the time of exposure of the second embodiment shown in FIG.

Next, the image stabilization operation will be described with reference to the drawings. First, during shooting standby, the communication sequence shown in FIG. 7 is executed, and the communication of the image stabilization information is interrupted during the conventional communication such as “AF” between the camera and the lens, “lens information”. Done in.

When the shutter is pressed to start the actual exposure operation, the image stabilization information is continuously communicated during the exposure period as in the communication sequence of FIG. Continuous communication of image stabilization information in this case is performed with a margin of Δt ₁ and Δt ₂ before and after the exposure period to ensure reliable image stabilization operation.

Since it is necessary to transmit a large amount of data at high speed to transmit the image stabilization information, it is possible to increase the transmission clock during the transmission of the image stabilization information to perform high speed transmission.

As described above, according to the second embodiment, the interface means is also used as the conventional contact, and continuous communication of the image stabilization information is performed for a long time during the exposure. Along with the similar improvement in noise margin, the dedicated signal pin 27 is not required, and a high vibration isolation effect can be obtained during exposure.

[0061]

According to the first aspect of the present invention, the shake detecting means for detecting a plurality of shake directions in the camera body and the digitizing means for converting a plurality of output signals from the shake detecting means into a plurality of digital signals. The interchangeable lens side is provided with a shake correcting means for changing the optical axis in a plurality of directions and a driving means for driving the shake correcting means, and an interface means capable of exchanging a plurality of digital signals between the camera body and the interchangeable lens is provided. In a lens-exchangeable anti-vibration camera that drives the shake correction means based on multiple digital signals from the camera body, when transmitting multiple digital signals from the camera body to the interchangeable lens, the digital signals are decomposed bit by bit. Since it has a transmission means for transmitting the upper bits of each digital signal first in a time division manner and then sequentially transmitting the lower bits in a time division manner. Upon transmission of digital signals according to a plurality of vibration-proof to the interchangeable lens from the camera body, the stability of the anti-vibration information transmission can be obtained by reduction of the transmission end timing error.

According to the second aspect of the present invention, the driving means on the interchangeable lens side starts driving the amount corresponding to the upper bits of the transmitted digital signal without waiting for the transmission of the lower bits. Therefore, it is possible to speed up the drive for vibration isolation.

According to the third aspect of the present invention, the camera body is provided with the shake detecting means for detecting a plurality of shake directions and the digitizing means for converting a plurality of output signals from the shake detecting means into a plurality of digital signals. The interchangeable lens side is provided with shake correction means for changing the optical axis in a plurality of directions and drive means for driving the shake correction means, and has interface means capable of exchanging a plurality of digital signals between the camera body and the interchangeable lens. In an anti-vibration camera that drives a shake correction means based on a plurality of digital signals from the camera body, an interface means common to a signal pin for transmitting other information between the lens and the camera, and a plurality of anti-vibration means for exposure during the exposure period. Since it has a transmission control means for making the digital signal of occupy the signal pin longer than other period, it improves the anti-vibration effect during exposure, and Data communication is possible.

According to the fourth aspect of the present invention, in the image stabilizing lens mounted on the camera body, shake correcting means for changing the optical axis, and interface means for transmitting and receiving digital signals in combination with the camera body, Since it has drive means for driving the shake correction means by a digital signal sent from the camera body via the interface means, it is possible to achieve compactness of the vibration-proof lens and stability of the vibration-proof information transmission, as well as system development. It will be possible to obtain.

[Brief description of drawings]

FIG. 1 is a block diagram showing a main configuration of an image stabilization camera according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of the image stabilization camera shown in FIG.

FIG. 3 is a block diagram of the digitizing transmission circuit shown in FIG.

FIG. 4 is a timing chart of the digitized transmission circuit shown in FIG.

5 is a waveform diagram of the angular displacement signal shown in FIG.

FIG. 6 is a block diagram showing a main configuration of an image stabilization camera according to a second embodiment of the present invention.

7 is a diagram showing a communication sequence when the image stabilization camera shown in FIG. 6 is in a shooting standby state.

8 is a diagram showing a communication sequence at the time of exposure of the image stabilization camera shown in FIG.

[Explanation of symbols]

 1,48 Camera body 2,49 Interchangeable lens 3,50 Shake detection means 4,51 Digitization means 5,53 Interface means 6,55 Drive means 7,56 Shake correction means 8 Camera body 9 Anti-vibration lens 10 Angular displacement detection device 11 Angular Displacement Signal 12 Digitized Transmission Circuit 13 Output Line 14 Parallel-Serial Converter 15 Data Selector 16 Data Controller 27 Signal Contact 28 Signal Line 29 Drive Controller 30 Drive Signal 31 Correction Optical System 32 Pitch, Yaw Direction Drive Means 52, 54 Microcomputer

Claims (4)

[Claims] 1. A camera body is provided with shake detecting means for detecting a plurality of directions of shake and digitizing means for converting output signals from the shake detecting means in a plurality of directions into a plurality of digital signals. A plurality of units which are sent from the camera body are provided with shake correction means for changing the optical axis, drive means for driving the shake correction means, and interface means capable of exchanging the plurality of digital signals between the camera body and the interchangeable lens. In an image stabilization camera with interchangeable lenses, which is configured to drive the shake correction unit based on the digital signal of, when transmitting the plurality of digital signals from the camera body to the interchangeable lens, the plurality of digital signals are decomposed bit by bit. Transmission means for transmitting the upper bits of each digital signal first in a time-division manner and then sequentially transmitting the lower bits in a time-division manner. Anti-vibration camera that characterized the door. 2. The protection according to claim 1, wherein the driving means on the interchangeable lens side starts driving an amount corresponding to an upper bit of the transmitted digital signal without waiting for transmission of a lower bit. Shake camera. 3. A camera body is provided with shake detecting means for detecting a plurality of directions of shake and digitizing means for converting output signals from the shake detecting means in a plurality of directions into a plurality of digital signals. A plurality of shake correction means for changing the optical axis and a driving means for driving the shake correction means are provided, and an interface means capable of exchanging the plurality of digital signals between the camera body and the interchangeable lens is provided. In the anti-vibration camera with interchangeable lenses, which is configured to drive the shake correction means based on the digital signal of, the interface means common to the signal pin for transmitting other information between the lens and the camera, and the anti-vibration means during the exposure period. Transmission control means for increasing the time for which the plurality of digital signals for occupying the signal pin are longer than other periods. Anti-vibration camera. 4. An anti-vibration lens attached to a camera body, a shake correction means for changing an optical axis, an interface means for connecting and receiving a digital signal in combination with the camera body, and a transmission from the camera body via the interface means. An anti-vibration lens, comprising drive means for driving the shake correction means by means of a received digital signal.