JPH0534566A - Zoom camera device - Google Patents

Abstract

PURPOSE:To easily switch the moving speed of a photographing lens in an optical axis direction without complicating mechanical constitution or making the cost of parts expensive. CONSTITUTION:A zoom motor 12 is controlled by a CPU 15 or a pulse generation circuit 16 so that the photographing lens 11 is moved to the telephone side of the optical axis direction thereof at a higher speed than a normal speed when a wide switch 14 is operated simultaneously under a state that a telephone switch 13 is operated. Besides, the motor 12 is controlled by the CPU 15 or the generation circuit 16 so that the lens 11 is moved to the wide side of the optical axis direction at the higher speed than the normal speed when the switch 13 is operated simultaneously under the state that the switch 14 is operated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a zoom camera device equipped with a taking lens having a zooming function.

[0002]

2. Description of the Related Art Generally, a zoom camera device having a photographing lens having a zooming function is provided with a switch for manually operating a zooming operation of the photographing lens by a user. As shown in FIG. 5, switches 4 and 5 for zooming the taking lens 3 in the direction of its optical axis (not shown) are provided on the upper surface 2 of the zoom camera device 1. In the zoom camera device 1 shown in FIG. 5,
When the switch 4 is operated, the taking lens 3 moves to the tele side at a predetermined speed, while when the switch 5 is operated, the taking lens 3 moves to the wide side at a predetermined speed. ing.

Now, in a zoom camera device in which such a zooming operation of a photographing lens can be manually operated by a user, the optical axis of the photographing lens is prevented so as not to miss a momentary shutter opportunity. In many cases, you want to move quickly in the direction and decide the composition. For this reason, conventionally, for example, in the case of the zoom camera device 1 as shown in FIG.
As a step switch or the like, the moving speed of the photographing lens 3 can be switched between high and low levels depending on the difference in the pressing depth of the switches 4 and 5, or the switches 4 and 5 can be changed.
In addition to this, a switch (not shown) for high speed movement is separately provided, and the switch (not shown) and the switch 4,
The photographing lens 3 was moved at a high speed by a combination operation with the lens 5.

[0004]

However, in the conventional zoom camera apparatus 1 as described above, in order to enable the photographing lens 3 to be moved at high speed,
The switches 4 and 5 must be two-stage switches, or a switch for instructing high-speed movement must be additionally provided, which causes a problem that the mechanical structure becomes complicated and the cost of parts increases. The present invention has been made in view of the above problems, and provides a zoom camera device capable of easily switching the moving speed of the taking lens in the optical axis direction without complicating the mechanical structure or increasing the cost of parts. The purpose is to do.

[0005]

In order to achieve the above object, the present invention provides a taking lens having a zooming function, a driving means for moving the taking lens in the optical axis direction thereof, and the taking lens having the optical axis. Tele side movement instruction switch operated when moving to the tele side of the direction, a wide side movement instruction switch operated when moving the photographing lens to the wide side of the optical axis direction, and the tele side movement instruction Based on the operation of the switch and the wide side movement instruction switch,
A zoom camera device comprising: control means for controlling the driving means so that the photographing lens moves to a telephoto side or a wide side in the optical axis direction at a predetermined speed, wherein the control means is the telephoto side. While the movement instruction switch is being operated, when the wide side movement instruction switch is operated in parallel with this, the photographing lens moves to the tele side in the optical axis direction at a speed higher than the predetermined speed. While controlling the drive means so that the wide-side movement instruction switch is operated, when the tele-side movement instruction switch is operated in parallel with the wide-side movement instruction switch, the photographing lens causes the optical axis to move. The driving means is controlled so as to move toward the wide side in the direction at a speed higher than the predetermined speed.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a block diagram showing a main configuration of a zoom camera device according to an embodiment of the present invention, FIG. 2 is a perspective view showing an outer appearance of the zoom camera device of FIG. 1, and FIG. 3 is a teleswitch and a wide switch shown in FIG. FIG. 4 is an explanatory view showing the schematic structure of FIG. 4, and FIG. 4 is a flowchart showing the operation flow of the zoom camera device of FIG. In FIG. 1, 10 is a zoom camera device, and the zoom camera device 10 is
A taking lens 11 having a zooming function, a zoom motor 12 such as a DC motor as a driving means for moving the taking lens 11 in the optical axis L (FIG. 2) direction, and the taking lens 11 in the optical axis L direction. Of the tele switch 13 as a tele side movement instruction switch that is operated when moving to the tele T (FIG. 2) side, and when moving the taking lens 11 to the wide W (FIG. 2) side in the optical axis L direction. And a wide switch 14 as a wide-side movement instruction switch that is operated.

Further, as shown in FIG. 1, the zoom camera device 10 determines the moving direction and moving speed of the taking lens 11 based on the operation of the tele switch 13 and the wide switch 14 to determine the zoom motor. A central processing unit (hereinafter, referred to as a CPU) 15 for controlling the drive of 12;
The zoom motor 1 based on the determination content of the CPU 15.
A pulse generator circuit 16 for generating and outputting a pulse signal for defining the speed of 2 is provided, and the CPU 15 and the pulse generator circuit 16 constitute a control means for controlling the drive of the zoom motor 12. There is. Incidentally, the CPU1
Reference numeral 5 controls the pulse generation circuit 16 according to the moving direction and moving speed of the photographing lens 11 determined based on the operation of the tele switch 13 and the wide switch 14, and sets the determined moving direction of the photographing lens 11. The pulse generation circuit 1 generates a pulse signal having a waveform corresponding to the moving speed.
6 to the zoom motor 12, and based on this pulse signal, the zoom motor 12 moves the taking lens 11 in the optical axis L direction at the moving direction and speed determined by the CPU 15.

As shown in FIG. 2, in the zoom camera device 10 of the present embodiment having the above-mentioned main structure, the taking lens 11 is exposed on the front surface 21 of the housing 20, and the teleswitch 13 is provided. And wide switch 1
4 is disposed on the upper surface 22 of the housing 20.
As shown in FIG. 3, for example, the tele switch 13 and the wide switch 14 include push buttons 13a and 14a, conductive rubber portions 13b and 14b formed on the back surfaces of the push buttons 13a and 14a, and conductive rubber portions 13b and 14b. 14b has a flexible board 13c, 14c disposed at a position facing the electric board, and an electric contact (not shown) formed on the flexible board 13b, 14b when the push button 13a, 14a is pressed. Is the conductive rubber portion 13
It is short-circuited by b and 14b to be turned on.

Then, the CPU 15 controls the substrate 13
It is determined whether or not the tele switch 13 and the wide switch 14 are being pressed by detecting whether or not the contacts (not shown) on b and 14b are short-circuited, and based on the result of the determination, the taking lens The moving direction and the moving speed of 11 are determined, and a pulse signal having a content corresponding to the determined moving direction and moving speed is output from the pulse generating circuit 16 to the zoom motor 12 side.

Next, the operation of the zoom camera device 10 of this embodiment will be described with reference to the flowchart of FIG. For example, when the CPU 15 detects the pressing operation of the tele switch 13 or the wide switch 14 and the operation starts, first in step S1 after the start, whether or not the tele switch 13 is operated and turned on is CP.
If it is determined that U15 is ON, in the next step S2, the CPU 15 determines whether or not the wide switch 14 is operated and is ON. If the wide switch 14 is not turned on here, the tele switch 1
When the CPU 15 determines that only 3 is on, the CPU 15 proceeds to the next step S3 and controls the pulse generation circuit 16 to the zoom motor 12 to move the taking lens 11 in the optical axis L direction. It is moved to the tele-T side at a predetermined standard speed, and the process returns to step S1.

On the other hand, when the CPU 15 determines in step S2 that the wide switch 14 is on, the CPU 15 controls the wide switch 14 in parallel while the tele switch 13 is in the on state. When it is determined that the pressing operation has been performed, the process proceeds to step S4. Then, in step S4, the CPU 15 controls the pulse generation circuit 16 to the zoom motor 12 to move the taking lens 11 to the tele-T side in the optical axis L direction at a speed higher than the predetermined standard speed. , The step S1
Return to.

Subsequently, if the tele switch 13 is not turned on in step S1, the CPU 15 determines in step S5 whether the wide switch 14 is operated and is turned on, and it is turned on. When it is determined, the CPU 15 determines in the next step S6 whether or not the teleswitch 13 is operated and turned on. If the tele switch 13 is not turned on here, the CPU 15 determines that only the wide switch 14 is turned on, and moves to the next step S7 where the CPU 15 controls the pulse generation circuit 16 to the zoom motor 12. Then, the photographing lens 11 is moved to the wide W side in the optical axis L direction at a predetermined standard speed, and the process returns to step S5.

On the other hand, when the CPU 15 determines in step S6 that the wide switch 14 is on, the CPU 15 controls the wide switch 14 in parallel while the tele switch 13 is in the on state. When it is determined that the pressing operation has been performed, the process proceeds to step S8. Then, in step S8, the CPU 15 controls the pulse generation circuit 16 to the zoom motor 12 to move the taking lens 11 to the wide W side in the optical axis L direction at a speed higher than the predetermined standard speed. , The step S
Return to 5. In addition, after the start, or after the return from the step S3 or step S4, the step S
1 when the tele switch 13 is off and the wide switch 14 is off at step S5, and when the wide switch 14 is returned at step S5 after returning from step S7 or step S8.
If is off, the series of operations is ended and the process ends.

That is, when only the tele switch 13 is pressed by the operator (not shown), the operations of steps S1 to S3 are performed so that the taking lens 11 is on the tele T side of the optical axis L. When the tele switch 13 is released from the pressing operation, the photographing lens 1
The movement of 1 to the tele-T side stops. On the other hand, when only the wide switch 14 is pressed by the operator (not shown), the operations of steps S1 and S5 to S7 are performed and the taking lens 11 is set to the wide W side of the optical axis L. When the pressing operation of the wide switch 14 is released, the movement of the taking lens 11 to the wide W side is stopped.

When the wide switch 14 is pressed in parallel while the tele switch 13 is being pressed, the steps S1, S2 and S4 are performed and the taking lens 11 is operated. Is the optical axis L
When the wide switch 14 is released from the pressing operation of the tele switch 13, the movement of the taking lens 11 to the tele T side is switched to the standard speed. On the other hand, if the tele switch 13 is pressed in parallel while the wide switch 14 is being pressed, the step S1,
The operations of steps S5, S6, and S8 are performed to move the taking lens 11 to the wide W side of the optical axis L at high speed, and the pressing operation of the teleswitch 13 during the pressing operation of the wide switch 14 is released. Then, the movement of the photographing lens 11 to the wide W side is switched to the movement at the standard speed.

As shown in FIG. 1, the CPU 15 is connected with a position detection sensor 17 for detecting the position of the photographing lens 11 within the zooming operation range. ,
When the control zoom mode used when photographing a size of a subject (not shown) with a fixed size is selected, the CPU 15 determines the moving direction of the photographing lens 11 based on the detection result of the position detection sensor 17. The moving amount is determined, and the CPU 15 controls the pulse generating circuit 16 to the zoom motor 12 on the basis of the moving amount to control the photographing lens 1
1 is moved to the tele-T side or the wide-W side of the optical axis L.

As described above, in the zoom camera apparatus according to the present embodiment, only the pressing operation of the tele switch 13 and the wide switch 14 moves the photographing lens 11 to the tele T side or the wide W side in the optical axis L direction. Since you can switch the speed, you can use a switch with a special structure,
It is not necessary to provide a separate switch for instructing high-speed movement, so that the mechanical structure is not complicated and the cost of parts is not increased.

In this embodiment, the zoom motor 12 is used.
The moving speed of the photographing lens 11 according to the above is changed according to the content of the pulse signal output from the pulse generating circuit 16. For example, a stepping motor is used as the zoom motor 12, and the speed of the stepping motor is It may be controlled by the CPU 15.

[0019]

As described above, according to the zoom camera device of the present invention, when the wide-side movement instruction switch is operated in parallel with the tele-side movement instruction switch being operated, an image is taken. The control means controls the driving means so that the lens moves to the tele side in the optical axis direction at a speed higher than a predetermined speed, while the wide side movement instruction switch is operated in parallel with this. When the tele-side movement instruction switch is operated, the control means controls the driving means so that the photographing lens moves to the wide side in the optical axis direction at a speed higher than the predetermined speed. Therefore, the moving speed of the taking lens in the optical axis direction can be easily switched without complicating the mechanical structure or increasing the cost of parts.

[Brief description of drawings]

FIG. 1 is a block diagram showing a main configuration of a zoom camera device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the external appearance of the zoom camera device of FIG.

FIG. 3 is an explanatory diagram showing a schematic structure of a tele switch and a wide switch shown in FIG.

FIG. 4 is a flowchart showing a flow of operations of the zoom camera device of FIG.

FIG. 5 is a perspective view showing an appearance of a general zoom camera device.

[Explanation of symbols]

 10 Zoom Camera Device 11 Photographic Lens 12 Zoom Motor (Drive Means) 13 Tele Switch (Tele Side Movement Instruction Switch) 14 Wide Switch (Wide Side Movement Instruction Switch) 15 CPU (Control Means) 16 Pulse Generation Circuit (Control Means) L Photography Lens optical axis

Claims (1)

Claim: What is claimed is: 1. A photographic lens having a zooming function, a driving means for moving the photographic lens in the optical axis direction thereof, and a moving means for moving the photographic lens toward the tele side in the optical axis direction. A tele side movement instruction switch operated, a wide side movement instruction switch operated when moving the photographing lens to the wide side in the optical axis direction, and an operation of the tele side movement instruction switch and the wide side movement instruction switch And a control means for controlling the driving means so that the photographing lens moves to the tele side or the wide side in the optical axis direction at a predetermined speed, the zoom camera device comprising: Is a state in which the telephoto side movement instruction switch is operated, and when the wide side movement instruction switch is operated in parallel with this, the photographing lens is While the drive means is controlled to move to the tele side in the axial direction at a speed higher than the predetermined speed, while the wide side movement instruction switch is being operated, the tele side movement instruction is issued in parallel with the operation. A zoom camera device, characterized in that, when a switch is operated, the drive means is controlled so that the photographing lens moves to a wide side in the optical axis direction at a speed higher than the predetermined speed.