JPH0611639A - Motor-driven zoom lens camera and motor-driven zoom lens barrel - Google Patents

Abstract

PURPOSE:To improve operability and safety at the time of film exchange by having the motor-driven zoom moved to a shrunken position where the length of the lens barrel is shortest when the rewinding up of the film is carried out. CONSTITUTION:In the motor-driven zoom lens camera provided with a lens barrel 101 with the motor-driven zoom lens 100, a driving means 102 driving the motor-driven zoom lens 100 and a rewinding up means 103 winding up film to a cartridge, a control means 104 is provided to move the motor-driven zoom lens 102 to a shrunken position where the length of the lens barrel 101 is made to be shortest by the driving means 102 when the rewinding up of the film is carried out by the rewinding up means 103. Therefore, if the rewinding up of the film is carried out, the motor-driven zoom lens 100 is moved to the shrunken position where the length of the lens barrel 101 is made to be shortest. Furthermore, when the rewinding up of the film is carried out, the motor-driven zoom lens and an automatic focus lens are moved to the shrunken position where the length of the lens barrel is made to be shortest.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric zoom lens camera and an electric zoom lens barrel, and more particularly to drive control of a zoom lens when rewinding a film.

[0002]

2. Description of the Related Art There is known an electric zoom lens camera in which a driving device drives an electric zoom lens to perform zooming in accordance with an operation signal from an electric zoom button or an electric zoom ring. Further, there is also known an electric zoom lens camera with an autofocus lens, in which an autofocus lens is provided in an electric zoom lens, and a driving device drives the autofocus lens to perform focusing in accordance with a focus adjustment signal from a focus detection device.

Further, these electric zoom lens cameras are equipped with a rewinding device for rewinding the film to the cartridge, and automatically rewind the film by detecting the completion of photographing of the film or press the rewind button. The film is forcibly rewound by the operation.

[0004]

By the way, normally, when a film is to be replaced, the camera is placed on a table with the lens barrel down and the back cover is opened to perform the film replacement work.
However, in the conventional electric zoom lens camera, when film shooting is completed, the film is automatically rewound into the cartridge and the film can be replaced, but at this time, the electric zoom lens remains extended. However, if the camera is placed on a table with the lens barrel down, there is a risk that the camera will fall down and become unstable.

An object of the present invention is to provide an electric zoom lens camera and an electric zoom which move an electric zoom lens or an electric zoom lens with an autofocus lens to a retracted position where the length of the lens barrel is minimized when the film is rewound. To provide a lens barrel.

[0006]

The invention according to claim 1 will be described with reference to FIG. 1 which is a claim correspondence diagram.
Of the invention is a lens barrel 101 having an electric zoom lens 100.
And driving means 102 for driving the electric zoom lens 100
And rewinding means 1 for rewinding the film to the cartridge
When the film is rewound by the rewinding unit 103, the drive unit 102 drives the electric zoom lens 100 to the retracted position where the length of the lens barrel 101 is minimized. The control means 104 for moving is provided, thereby achieving the above object. The invention of claim 2 will be described with reference to FIG. 2, which is a claim correspondence diagram, and the invention of claim 2 is an electric zoom including an electric zoom lens 200 and a drive unit 202 for driving the electric zoom lens 200. When the control signal applied to the lens barrel and receiving the rewinding of the film into the cartridge is received from the camera body, the driving unit 202 moves the electric zoom lens 200 to the retracted position where the length of the lens barrel 201 is minimized. A control means 204 is provided to achieve the above objective. Explaining the invention of claim 3 in association with FIG. 3 which is a claim correspondence diagram,
In the invention of claim 3, a lens barrel 301 having an electric zoom lens 300 with an autofocus lens 305, a first driving unit 302 for driving the electric zoom lens 300, and a second driving unit for driving the autofocus lens 305. It is applied to an electric zoom lens camera provided with 306 and rewinding means 303 for rewinding the film to the cartridge. When the rewinding means 303 rewinds the film, the first driving means 302 moves the lens barrel 301 Electric zoom lens 300 up to the retracted position where the length is minimized
And the control means 304 for moving the autofocus lens 305 to the retracted position where the length of the lens barrel 301 is minimized by the second drive means 306, thereby achieving the above object. Explaining the invention of claim 4 in association with FIG. 4 which is a claim correspondence diagram,
According to a fourth aspect of the present invention, an electric zoom lens 400 with an autofocus lens 405 and the electric zoom lens 400 are provided.
It is applied to an electric zoom lens barrel including a first driving unit 402 for driving a camera and a second driving unit 406 for driving an autofocus lens 405, and a control signal associated with rewinding a film into a cartridge is sent to a camera. When it is received from the main body, the first drive means 402 causes the lens barrel 401
Motorized zoom lens 4 up to the retracted position where the length of the
Control unit 404 for moving the auto focus lens 405 to the retracted position where the length of the lens barrel 401 is minimized by the second drive unit 406, thereby achieving the above object.

[0007]

In the electric zoom lens camera of the first aspect, when the film is rewound, the electric zoom lens 100 is moved to the retracted position where the length of the lens barrel 101 is minimized. In the electric zoom lens barrel according to the second aspect, when the control signal associated with the film rewinding is received from the camera body, the electric zoom lens 200 is moved to the retracted position where the length of the lens barrel 201 is minimized. In the electric zoom lens camera according to claim 3, when the film is rewound, the electric zoom lens 300 and the autofocus lens 30 are brought to the retracted position where the length of the lens barrel 301 is minimized.
Move 5 In the electric zoom lens barrel according to claim 4, when the control signal accompanying the rewinding of the film into the cartridge is received from the camera body, the electric zoom lens 400 and the auto focus are moved to the retraction position where the length of the lens barrel 401 becomes the minimum. The lens 405 is moved.

[0008]

【Example】

First Embodiment With reference to FIGS. 5 to 8, a first embodiment of the present invention will be described in which a driving device for an electric zoom lens and its control circuit are built in a camera body. FIG. 5 is a top view of the electric zoom lens camera including a partial sectional view, and FIG. 6 is a block diagram showing the configuration of the first embodiment. A lens barrel 2 having an electric zoom lens 6 is attached to the camera body 1, and a rewind button 3 for forcibly rewinding the film is mounted on the upper surface of the camera body 1.
Is provided. Further, the camera body 1 has a built-in rewind switch SW1, and when the rewind button 3 is operated, the rewind switch SW1 is turned on. Further, the camera body 1 includes a rotating plate 4 and a photo interrupter 5.
The film movement amount detection switch SW2 composed of The rotating plate 4 rotates in association with the film winding device 7 and the film rewinding device 8, and the photo interrupter 5
Converts the light interrupted by the slit 4a with the rotation of the rotary plate 4 into an electric signal. That is, the switch S
W2 generates a pulse signal for each predetermined movement amount of the film.

The electric zoom lens camera of the first embodiment comprises a zoom lens driving device 9 and a focal length detecting device 10 in the camera body 1. The zoom lens drive device 9
The electric zoom lens 6 of the lens barrel 2 is moved via a power transmission mechanism (not shown). The focal length detection device 10 is composed of an encoder (not shown) that rotates following the zoom lens driving device 9, and detects the focal length X of the electric zoom lens 6. The control circuit 11 is composed of a microcomputer and its peripheral parts, and controls the film winding device 7, the film rewinding device 8 and the zoom lens driving device 9 based on the control signals from the switches SW1 and SW2 and the focal length detection device 10. To do.

FIG. 7 is a flow chart showing a control program executed by the control circuit 11. The operation of the first embodiment will be described with reference to this flowchart. First, in step S1, it is determined whether or not the end of the film is detected. If the end is detected, the process proceeds to step S3, and if not, the process proceeds to step S2. The end of the film is detected as the end of the film if a pulse signal is not output from the movement amount detection switch SW2 for a certain period of time when one frame of the film after filming is wound. In step S2, it is determined whether or not the film rewind button 3 is operated by the rewind switch SW1, and as shown in FIG. 8, when the film rewind button 3 is operated and the switch SW1 is turned on, the process proceeds to step S3. Otherwise, the program execution ends. When the end of the film is detected, or when the forced rewinding operation of the film is performed, the film rewinding device 8 rewinds the film to the cartridge in step S3.

After the film is rewound, it is determined in step S4 whether or not the electric zoom lens 6 is attached. If the electric zoom lens 6 is attached, the process proceeds to step S5. If not, the execution of the program is terminated. The electric zoom lens 6
Whether the lens is attached or not is determined by a lens RO (not shown) built in the lens barrel 2.
Judge by reading the information from M. Electric zoom lens 6
Is attached, the current focal length X of the electric zoom lens 6 is detected by the focal length detection device 10 in step S5, and the detected current focal length X and the lens barrel 2 are detected in subsequent step S6. The difference L with the focal length A when is the minimum length is calculated. Then, in step S7, it is determined whether or not the difference L is 0, that is, whether or not the length of the lens barrel 2 is minimum. If the difference is the minimum length, the process proceeds to step S9, and the minimum length is still reached. If not, the process proceeds to step S8. In step S8, as shown in FIG. 8, the zoom lens driving device 9 retracts the electric zoom lens 6 to a position where the length of the lens barrel 2 is minimized. On the other hand, if the length of the lens barrel 2 has already reached the minimum position, the driving of the electric zoom lens 6 by the zoom lens driving device 9 is stopped in step S9,
Terminates program execution.

When the film is rewound by detecting the end of the film or forcibly rewinding the film, the electric zoom lens 6 is moved to a position where the length of the lens barrel 2 is minimized. Therefore, the film exchange work becomes easy.

Second Embodiment Next, a second embodiment of the present invention in which a zoom lens driving device and its control circuit are built in a lens barrel will be described with reference to FIGS. FIG. 9 is a block diagram showing the configuration of the second embodiment. The same components as those in FIGS. 5 and 6 showing the configuration of the first embodiment are designated by the same reference numerals, and different points will be mainly described. The electric zoom lens camera of the second embodiment is provided with a zoom lens driving device 9A, a focal length detection device 10A and a lens control circuit 11 in a lens barrel 2A. The zoom lens driving device 9A is composed of a motor, a gear and the like (not shown), and is an electric zoom lens 6A of the lens barrel 2A.
To move. The focal length detection device 10A includes an encoder (not shown) that rotates following the zoom lens driving device 9A, and detects the focal length X of the electric zoom lens 6A. The lens control circuit 12 is composed of a microcomputer and its peripheral parts, exchanges various information with the control circuit 11A of the camera body 1A, and receives the information and the focal length X from the focal length detection device 10A.
The zoom lens driving device 9A is controlled based on the above. Although illustration is omitted, the zoom lens driving device 9A of the lens barrel 2A from the battery of the camera body 1A via the contacts,
Electric power is supplied to each of the focal length detection device 10A and the lens control circuit 12.

FIG. 10 shows the control circuit 11A of the camera body 1A.
11 is a flowchart showing a control program executed by the lens control circuit 12 of the lens barrel 2A, and FIG. 11 is a flowchart showing a control program executed by the lens control circuit 12 of the lens barrel 2A. The operation of the second embodiment will be described with reference to these flowcharts. In step S11 of FIG. 10, the control circuit 11A of the camera body 1A determines whether or not the end of the film has been detected as described above. If the end is detected, the process proceeds to step S13, and if not, step S12. Go to. In step S12, it is determined whether or not the film rewind button 3 has been used to forcibly rewind the film. When the forced rewind operation is performed, step S13 is performed.
Otherwise, terminate the program execution.
In step S13, the film rewinding device 8 rewinds the film, and when the rewinding is completed, a lens retraction signal is output to the lens control circuit 12 of the lens barrel 2A in step S14.

The lens control circuit 12 of the lens barrel 2A is shown in FIG.
In step S21 of, the control circuit 11A of the camera body 1A
It is determined whether or not a lens retraction signal associated with film rewinding is received from step S22, and if it is received, the process proceeds to step S22, where the focal length detection device 10A detects the current focal length X of the electric zoom lens 6A, and then step S23.
Then, the difference L between the detected current focal length X and the focal length A when the lens barrel 2A has the minimum length is calculated. Then, in step S24, it is determined whether or not the difference L is 0, that is, whether or not the length of the lens barrel 2A is minimized. If the difference is the minimum length, the process proceeds to step S26, and the minimum length is still reached. If not, the process proceeds to step S25. In step S25, the electric zoom lens 6A is retracted by the zoom lens driving device 9A to a position where the length of the lens barrel 2A is minimized. on the other hand,
If the length of the lens barrel 2A has already reached the minimum position, the driving of the electric zoom lens 6A by the zoom lens driving device 9A is stopped in step S26, and the execution of the program ends.

As described above, in the camera equipped with the electric zoom lens barrel having the zoom lens driving device 9A, the focal length detecting device 10A and the lens control circuit 12 built in the barrel 2A, the film can be rewound into the cartridge. When the accompanying control signal is received from the control circuit 11A of the camera body 1A, the electric zoom lens 6A is moved to the retracted position where the length of the lens barrel 2A is minimized, so that the film can be easily replaced.

Third Embodiment With reference to FIGS. 12 to 14, a third embodiment of the present invention will be described in which a driving device for an electric zoom lens with an autofocus lens and its control circuit are built in a camera body. FIG. 12 is a block diagram showing the configuration of the third embodiment. The same components as those in FIGS. 5, 6 and 9 showing the configurations of the first and second embodiments are designated by the same reference numerals, and different points will be mainly described. In the electric zoom lens camera of the third embodiment, the autofocus lens 13 is attached to the camera body 1B.
A lens barrel 2B having an attached electric zoom lens 6B is attached. Further, this camera has a zoom lens driving device 9B, a focal length detecting device 10B, an autofocus lens driving device 14 and a lens position detecting device 1 in a camera body 1B.
5 is provided.

The zoom lens driving device 9B is composed of a motor, a gear, and the like (not shown), and moves the electric zoom lens 6B of the lens barrel 2B via a power transmission mechanism (not shown).
The focal length detection device 10B is composed of an encoder (not shown) that rotates following the zoom lens driving device 9B, and detects the focal length X of the electric zoom lens 6B. The autofocus lens driving device 14 is composed of a motor, a gear, and the like (not shown), and moves the autofocus lens 13 of the lens barrel 2B via a power transmission mechanism (not shown). The lens position detection device 15 is composed of an encoder (not shown) that rotates following the autofocus lens driving device 14, and detects the position Y of the autofocus lens 13. The control circuit 11B is composed of a microcomputer and its peripheral parts, and includes a switch SW.
1, SW2, the focal length detecting device 10B, and the lens position detecting device 15 are used to control the film winding device 7, the film rewinding device 8, the zoom lens driving device 9B, and the autofocus lens driving device 14.

FIG. 13 is a flow chart showing a control program executed by the control circuit 11B. The operation of the third embodiment will be described with reference to this flowchart. First, in step S31, it is determined whether or not the end of the film is detected. If the end is detected, the process proceeds to step S33, and if not, the process proceeds to step S32. Step S
In 32, it is determined whether or not the film rewind button 3 is operated by the rewind switch SW1, and when the film rewind button 3 is operated and the switch SW1 is turned on, the process proceeds to step S33, and if not, the execution of the program ends. To do. When the end of the film is detected or when the forced rewinding operation of the film is performed, the film rewinding device 8 rewinds the film to the cartridge in step S33.

After rewinding the film, it is determined in step S34 whether or not the electric zoom lens 6B with the autofocus lens 13 is attached. If it is attached, the process proceeds to step S35, and if not, the program is executed. finish. When the electric zoom lens 6B with the autofocus lens 13 is attached, in step S35,
The current focal length X of the electric zoom lens 6B is detected by the focal length detection device 10B, and in the subsequent step S36, the detected current focal length X and the focal length A when the lens barrel 2B has the minimum length are calculated. Calculate the difference L. Then, in step S37, it is determined whether or not the difference L is 0, that is, whether or not the length of the lens barrel 2B is minimized. If the difference is the minimum length, the process proceeds to step S39, and the minimum length is still reached. If not, the process proceeds to step S38. In step S38, the zoom lens driving device 9B retracts the electric zoom lens 6B to a position where the length of the lens barrel 2B is minimized. On the other hand, if the length of the lens barrel 2B has already reached the minimum position, driving of the electric zoom lens 6B by the zoom lens driving device 9B is stopped in step S39, and the process proceeds to step S40 in FIG.

In step S40 of FIG. 14, the lens position detecting device 15 detects the current position Y of the autofocus lens 13, and in the following step S41, the detected current position Y and the lens barrel 2B become the minimum length. The difference K from the lens position B is calculated. Then, in step S42, the difference K
Is 0, that is, whether or not the length of the lens barrel 2B has become the minimum, and if it has reached the minimum length, step S44.
Otherwise go to step S43. In step S43, the autofocus lens driving device 14 retracts the autofocus lens 13 to the position B where the length of the lens barrel 2B is minimized. On the other hand, if the length of the lens barrel 2B has already reached the minimum position B, the drive of the autofocus lens 13 by the autofocus lens driving device 14 is stopped in step S44, and the execution of the program ends.

As described above, when the film is rewound by detecting the end of the film or forcibly rewinding the film, the electric zoom lens 6B and the autofocus lens 13 are moved to a position where the length of the lens barrel 2B is minimized.
Since it has been moved, the film exchange work becomes easier.

Fourth Embodiment With reference to FIGS. 15 to 17, a fourth embodiment of the present invention will be described in which a driving device for an electric zoom lens with an autofocus lens and its control circuit are built in a lens barrel. FIG. 15 is a block diagram showing the configuration of the fourth embodiment. The first to third
5, 6, 9 and 12 showing the configuration of the embodiment of FIG. In the electric zoom lens camera of the fourth embodiment, the lens barrel 2C includes a zoom lens driving device 9C, a focal length detecting device 10C, and an autofocus lens driving device 14.
A, lens position detection device 15A and lens control circuit 1
With 2A. Although not shown, the camera body 1
The zoom lens driving device 9C, the focal length detecting device 10C, the autofocus lens driving device 14A, the lens position detecting device 15 of the lens barrel 2C from the battery of C through the contact points.
Electric power is supplied to each of A and the lens control circuit 12A.

The zoom lens driving device 9C is composed of a motor, a gear and the like (not shown), and moves the electric zoom lens 6C of the lens barrel 2C. Also, the focal length detection device 10C
Is composed of an encoder (not shown) and the like which is rotated by being driven by the zoom lens driving device 9C.
The focal length X of C is detected. The autofocus lens driving device 14A is composed of a motor, a gear, and the like (not shown), and moves the autofocus lens 13A. The lens position detection device 15A includes an encoder (not shown) that rotates following the autofocus lens drive device 14A, and the position Y of the autofocus lens 13A.
To detect. The lens control circuit 12A is composed of a microcomputer and its peripheral parts, and includes a camera body 1
Various kinds of information are exchanged with the C control circuit 11C, and the zoom lens drive is performed based on the control signal from the control circuit 11C, the focal length X from the focal length detection device 10C, and the current position Y from the lens position detection device 15A. The device 9C and the autofocus lens driving device 14A are controlled.

FIG. 16 shows the control circuit 11C of the camera body 1C.
17 is a flowchart showing a control program executed by the lens control circuit 12A of the lens barrel 2C, and FIG. 17 is a flowchart showing a control program executed by the lens control circuit 12A of the lens barrel 2C. The operation of the fourth embodiment will be described with reference to these flowcharts. The control circuit 11C of the camera body 1C determines in step S51 of FIG. 16 whether or not the end of the film is detected as described above. When the end is detected, the process proceeds to step S53, and if not, step S52. Go to. In step S52, it is determined whether or not the film rewind button 3 has been used to forcibly rewind the film. When the forced rewind operation is performed, step S53 is performed.
Otherwise, terminate the program execution.
In step S53, the film rewinding device 8 rewinds the film, and when the rewinding is completed, a lens retraction signal is output to the lens control circuit 12A of the lens barrel 2C in step S54.

The lens control circuit 12A of the lens barrel 2C is shown in FIG.
In step S61 of 7, the control circuit 11 of the camera body 1C
It is determined whether or not the lens retraction signal associated with the film rewinding is received from C, and if it is received, step S62 is performed.
Then, the present focal length X of the electric zoom lens 6C is detected by the focal length detection device 10C, and the subsequent step S6
At 3, the difference L between the detected current focal length X and the focal length A when the lens barrel 2C has the minimum length is calculated. And
In step S64, it is determined whether or not the difference L is 0, that is, whether or not the length of the lens barrel 2C has become the minimum. If the difference has reached the minimum length, the process proceeds to step S66, and the minimum length has not yet been reached. If so, the process proceeds to step S65. In step S65,
The zoom lens driving device 9C retracts the electric zoom lens 6C to a position where the length of the lens barrel 2C is minimized. On the other hand, if the length of the lens barrel 2C has already reached the minimum position, driving of the electric zoom lens 6C by the zoom lens driving device 9C is stopped in step S66, and step S67 is performed.
Go to.

In step S67, the current position Y of the autofocus lens 13A is detected by the lens position detecting device 15A, and in the following step S68, the detected current position Y and the lens position B at which the lens barrel 2C has the minimum length. Calculate the difference K from Then, in step S69, the difference K is 0.
Whether or not, that is, whether or not the length of the lens barrel 2C has become the minimum, it proceeds to step S71 if it has reached the minimum length, otherwise proceeds to step S70. Step S
At 70, the autofocus lens driving device 14A retracts the autofocus lens 13A to the position B where the length of the lens barrel 2C is minimized. On the other hand, if the length of the lens barrel 2C has already reached the minimum position B, the drive of the autofocus lens 13A by the autofocus lens driving device 14A is stopped in step S71, and the execution of the program ends.

As described above, the electric zoom lens barrel having the zoom lens driving device 9C, the focal length detecting device 10C, the autofocus lens driving device 14A, the lens position detecting device 15A and the lens control circuit 12A built in the lens barrel 2C is provided. When the mounted camera receives a control signal associated with the rewinding of the film into the cartridge from the control circuit 11C of the camera body 1C, the electric zoom lens 6C and the autofocus lens 13A are brought to the retracted position where the length of the lens barrel 2C is minimized. Since it has been moved, the film can be easily replaced.

In the structure of the above embodiment, the zoom lens driving devices 9 and 9A serve as driving means, the zoom lens driving devices 9B and 9C serve as first driving means, and the autofocus lens driving devices 14 and 14A serve as second driving means. The film rewinding device 8 controls the driving means and the rewinding means by the control circuits 11 to 1
1C, 12, and 12A respectively constitute control means.

[0030]

As described above, according to the present invention, when the film is rewound, the electric zoom lens is moved to the retracted position where the length of the lens barrel is minimized. At this time, the length of the lens barrel is minimized to facilitate the replacement work, and the camera is not damaged when the film replacement work is performed with the lens barrel extended. Also, in the case of an electric zoom lens with an autofocus lens, when the film is rewound, the electric zoom lens and the autofocus lens are moved to the retracted position where the length of the lens barrel is minimized. Can be obtained.

[Brief description of drawings]

FIG. 1 is a complaint correspondence diagram.

FIG. 2 is a complaint correspondence diagram.

FIG. 3 is a complaint correspondence diagram.

FIG. 4 is a complaint correspondence diagram.

FIG. 5 is a top view of the electric zoom lens camera.

FIG. 6 is a block diagram showing the configuration of the first embodiment.

FIG. 7 is a flowchart showing an example of a control program of the first embodiment.

FIG. 8 is a diagram showing how the electric zoom lens is retracted when a film rewind button is operated.

FIG. 9 is a block diagram showing the configuration of a second embodiment.

FIG. 10 is a flowchart showing an example of a control program executed by the microcomputer of the camera body of the second embodiment.

FIG. 11 is a flowchart showing an example of a control program executed by the microcomputer in the lens barrel of the second embodiment.

FIG. 12 is a block diagram showing the configuration of a third embodiment.

FIG. 13 is a flowchart showing an example of a control program of the third embodiment.

FIG. 14 is a flowchart showing an example of a control program of the third embodiment.

FIG. 15 is a block diagram showing the configuration of a fourth embodiment.

FIG. 16 is a flowchart showing an example of a control program executed by the microcomputer of the camera body of the fourth embodiment.

FIG. 17 is a flowchart showing an example of a control program executed by the microcomputer in the lens barrel of the fourth embodiment.

[Explanation of symbols]

1, 1A, 1B, 1C Camera body 2, 2A, 2B, 2C, 101, 201, 301, 40
1 lens barrel 3 film rewind button 4 rotary plate 4a slit 5 photo interrupter 6, 6A, 6B, 6C, 100, 200, 300, 40
0 electric zoom lens 7 film winding device 8 film rewinding device 9, 9A, 9B, 9C zoom lens driving device 10, 10A, 10B, 10C focal length detection device 11, 11A, 11B, 11C control circuit 12, 12A lens control circuit 13, 13A, 305, 405 Autofocus lens 14, 14A Autofocus lens driving device 15, 15A Lens position detecting device 102, 202 Driving means 103, 303 Rewinding means 104, 204, 304, 404 Control means 302, 402 1st Driving means 306, 406 Second driving means SW1, SW2 switch

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical indication G03B 13/34

Claims (4)

[Claims] 1. An electric zoom lens camera comprising: a lens barrel having an electric zoom lens; drive means for driving the electric zoom lens; and rewinding means for rewinding a film into a cartridge. An electric zoom lens camera, comprising: a control unit that moves the electric zoom lens to a retracted position where the length of the lens barrel is minimized when the film is rewound. 2. An electric zoom lens barrel comprising an electric zoom lens and a driving means for driving the electric zoom lens, wherein when a control signal for rewinding a film into a cartridge is received from a camera body, the driving is performed. An electric zoom lens barrel comprising: control means for moving the electric zoom lens to a retracted position where the length of the lens barrel is minimized. 3. A lens barrel having an electric zoom lens with an autofocus lens, a first driving means for driving the electric zoom lens, a second driving means for driving the autofocus lens, and a film for a cartridge. In an electric zoom lens camera provided with a rewinding unit, a rewinding position in which the length of the lens barrel is minimized by the first driving unit when the film is rewound by the rewinding unit. The electric zoom lens is provided with a control means for moving the autofocus lens to a retracted position where the length of the lens barrel is minimized by the second drive means. camera. 4. An electric zoom lens barrel comprising: an electric zoom lens with an autofocus lens; a first driving means for driving the electric zoom lens; and a second driving means for driving the autofocus lens. When a control signal for rewinding the film into the cartridge is received from the camera body, the first drive unit moves the electric zoom lens to the retraction position where the length of the lens barrel is minimized. An electric zoom lens barrel comprising: a control unit that moves the autofocus lens to a retracted position where the length of the barrel is minimized by a second driving unit.