JP2526917B2 - Camera control device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an operating device for a camera, which is capable of switching between an image-capable state and a non-image-capable state and has a switch means for switching the state.

"Prior Art" Conventionally, as an operation device for a camera of this type, there is, for example, one shown in Figs. 6 to 8.

That is, the main switch 3 which is a slide switch
To the ON position by sliding to the left (as shown in FIG. 7, the lens barrel 2 is extended
Wide state) and slide to the right to the OFF position to disable shooting (the lens barrel 2 retracts into the camera body 1 and the barrier 5 closes, as shown in FIG. 6). ), And the main switch 3
Corresponding to the ON position of the main switch 3
The main switch 3 is provided with a display function so that the OFF positions correspond to each other, and by pressing the T / W switch 4, the lens barrel 2 is in the Wide position and the Tele position (the shooting shown in FIG. 8). It is configured such that it can be switched to each other.

On the other hand, when the automatic rewinding device detects all film windings and automatically rewinds the film, it is configured to switch the camera from the ready-to-shoot state to the ready-to-shoot state to prevent shooting due to erroneous operation. Things are being considered.

[Problems to be Solved by the Invention] However, in such a conventional camera operating device, when the automatic rewinding device is simply used in combination, the film is automatically rewound by the automatic rewinding device. At this time, the lens barrel 2 is retracted into the camera body 1 and the camera becomes incapable of photographing, but the main switch 3 is set to OF
There is a problem that the main switch 3 does not switch to the F position and the ON position is displayed, so the camera mistakenly recognizes that the camera is ready to shoot, and the lens barrel 2 is in the Wide position. And Tele position to move from one position to the other and try to shoot in the desired shooting state. T / W switch 4
However, it is necessary to confirm that the lens barrel 2 is not extended even if the T / W switch 4 is operated, and then realize that the camera is in an uncapable state and restart the operation from the beginning. At the same time, there is a problem that the operation is very troublesome.

According to the present invention, the switch means is not provided with the display function of the photographing possible state and the photographing impossible state of the camera, and the camera is switched between the photographing possible state and the photographing impossible state when the switch means is operated. It is an object of the present invention to provide an operating device for a camera, which is very easy to operate without causing an erroneous operation.

"Means for Solving Problems" The gist of the present invention for achieving such an object is to provide a camera that can switch between a photographable state and a photographable state and that has a switch means for switching the state. In the operating device of the above, the camera includes a lens barrel that switches between a photographing enabled state and a photographing disabled state in accordance with the switching between the photographing possible state and the photographing impossible state of the switch means, and the switch means is operated by an operation. A camera operating device is characterized in that it is constituted by a switch that emits a signal only when the operation is performed and switches the state alternately according to the state of the lens barrel.

[Operation] If the switch means is operated when the camera is in the shooting disabled state, an operation signal is issued to switch from the shooting disabled status to the shooting enabled status, while the switch means is operated when the camera is in the shooting enabled status. When an operation is applied to the camera, an operation signal is issued, and the camera can be switched from the image-capable state to the image-capable state without fail, so that the camera can be brought into a desired state by a simple operation without erroneously operating the switch means. Is.

[Example] An example of the present invention will be described below with reference to the drawings.

 1 to 5 show an embodiment of the present invention.

As shown in FIGS. 3 to 5, a lens barrel 11 is attached to the camera body 10 so as to be movable in the optical axis direction of a taking lens (not shown). , The most retracted and retracted position (imaging disabled state with the barrier 14 closed as shown in FIG. 3), the extended Wide position (imaging enabled state shown in FIG. 4) and the further extended Te
It takes three positions each of le position (shooting possible state shown in FIG. 5). In addition, in the camera body 10,
A movable auxiliary lens 12 is attached to the rear position of the lens barrel 11 in the Tele position.

On the upper surface 13 of the lens barrel 11, a T / W switch 21 is provided on the front side and a main switch 22 is provided on the rear side. T /
The W switch 21 is for switching the lens barrel 11 between the Wide position and the Tele position, while the main switch 22
Is for switching the lens barrel 11 between the wide position and the retracted position. That is, the main switch 22 serves as a switch means.

Here, the main switch 22 is a self-reset type switch (also called a momentary type switch), and the switch operates only while operating force is applied. If the operating force is removed, the switch returns to the state before operating. It is something that will be restored. The T / W switch 21 also has the same configuration as the main switch 22.

As shown in FIG. 1, one end of the main switch 22 is connected to the CPU 30, which is a control unit, and the other end of the main switch 22 is connected to one terminal of the power supply 21. The switch is closed by pushing the main switch 22 against the urging force, and the signal is input to the CPU 30. If the main switch 22 is not pushed, it is lifted by the urging force and the switch is opened.

Two encoders 32 and 33 are connected to the CPU 30,
The encoder 32 is a limit switch for detecting the lens barrel 11 in the collapsed position and inputting a detection signal to the CPU 30 by closing the encoder 32. Meanwhile, the encoder 33
Detects the lens barrel 11 in the Wide position and outputs the detection signal.
This is a limit switch for inputting to the CPU 30. Further, the encoders 32 and 33 are both opened to input a detection signal indicating that the lens barrel 11 is in the Tele position to the CPU 30.

The state in which the camera cannot take a picture is such that the lens barrel 11 does not collapse and the barrier 14 is simply closed.In that case, the encoder may be configured to be able to detect the opening and closing of the barrier 14, and , There is a state in which the camera cannot be photographed and is in a release lock state (the state in which the camera does not start even if the shutter button is pressed). In this case, if the state signal of the release lock state is input to the CPU 30, Good.

A motor drive unit 34 is connected to the CPU 30, and a drive motor 35 for extending and retracting the lens barrel 11 is connected to the motor drive unit 34.

 Next, the operation will be described.

In the following description, the camera is ready for shooting,
It is assumed that the lens barrel 11 is in the Wide position.

As shown in FIG. 2, when the main switch 22 is operated in step 1, it is determined in step 2 whether the main switch 22 is ON or OFF. If it is ON, the process proceeds to step 3.

In step 3, the encoders 32 and 33 respectively detect the position of the lens barrel 11, and the process proceeds to step 4.

In step 4, when it is detected that the encoder 32 is closed and the lens barrel 11 is in the retracted position, that is, the reset position, the process proceeds to step 5, and in step 5, the lens barrel 11 is extended by the drive motor 35 and In step 6, the position of the lens barrel 11 is continuously detected.

In step 7, it is constantly detected whether or not the lens barrel 11 is extended to the Wide position, and if it does not reach the Wide position, the process returns to step 5 and the lens barrel 11 is continuously extended. Then, the encoder 33 is closed and the lens barrel 11 is
When it is extended to the Wide position, the process proceeds to step 8.

In step 8, the extension of the lens barrel 11 is stopped, and the process proceeds to step 9.

Whether the main switch 22 is ON in step 9
Whether the main switch 22 is OFF is constantly determined, and if the main switch 22 is OFF, the process proceeds to step 10 to end the switch operation.

When shooting with the lens barrel 11 in the Wide position, you can shoot as it is. To shoot with the lens barrel 11 in the Tele position, press the T / W switch 21 to switch from the Wide position to Tel.
The lens barrel 11 may be extended to the position e before shooting.

On the other hand, in step 4, the encoder 32 is opened,
When the encoder 33 is closed and it is detected that the lens barrel 11 is in the Wide position, the process proceeds to step 11, the drive motor 35 retracts the lens barrel 11 in step 11, and the lens barrel 11 moves in step 12. Continue to detect position.

In step 13, whether or not the lens barrel 11 has been retracted to the reset position is constantly detected. If the lens barrel 11 has not reached the reset position, the process returns to step 11 and the lens barrel 11 is continuously retracted. When the encoder 32 is closed and the lens barrel 11 is moved to the reset position, the process proceeds to step 14.

In step 14, the retraction of the lens barrel 11 is stopped, the process proceeds to step 9, and the switch operation is ended in step 10.

According to the camera operation device of the above-described embodiment, when the operation of the main switch 22 is applied, the lens barrel 11 is set to the Wide.
Position, or whether the lens barrel 11 is in the reset position (initial position; the position where the lens barrel 11 is retracted most and retracted), and from the determined one position to the other position. Since the lens barrel 11 is surely moved, for example, even if the lens barrel 11 is retracted before the film rewinding operation by the automatic rewinding device, no inconvenience is caused in the switch operation.

[Advantages of the Invention] According to the camera operation device of the present invention, the switch means itself is not provided with a display function as to whether or not the camera is in an image-capable state. It is possible to easily and surely switch the camera to a desired state by the switch means.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention.
FIG. 3 is a conceptual circuit diagram in which switch means is provided, FIG. 2 is a flow chart showing operation of switch means, and FIG.
FIG. 5 is a plan view of the camera, and FIGS. 6 to 8 are explanatory views of the operation of the conventional camera operating device. 10 …… Camera body, 11 …… Lens barrel 21 …… T / W switch 22 …… Main switch (switch means) 30 …… CPU, 32,33 …… Encoder 34 …… Motor drive part, 35 …… Drive motor

Claims (3)

(57) [Claims] 1. An operating device for a camera, which is switchable between an image-capable state and an image-capable state and has a switch means for switching the state, wherein the camera has an image-capable state and an image-capable state of the switch means. A lens barrel that switches between an image-capable state and a non-image-capable state in accordance with the above-mentioned switching, and the switch means emits a signal only when an operation is applied, and the lens barrel is input each time the state is operated. An operating device for a camera, which is configured by a switch that is alternately switched according to the state of. 2. The lens barrel has at least two positions: a retracted position in which the lens barrel is retracted into the camera to be in an uncapable state and a projecting position in which the lens barrel is extended to the subject side to be in an imageable state. The camera operating device according to claim 1, wherein the operating device is movable to the camera. 3. The camera comprises an automatic rewinding device for automatically rewinding a film; and a lens barrel control device for automatically moving the lens barrel to a retracted position in accordance with the operation of the automatic rewinding device. The operating device for a camera according to claim 2, further comprising;