JP2001124977A - Optical device, optical device drive unit, and camera system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate various troubles caused when the driving speed of a zoom lens in presetting operation is determined by setting of a zoom speed varying variable resistor for varying and setting the driving speed of the zoom lens for the manipulated variable of a zoom control switch 1. SOLUTION: This optical device, which performs preset drive control over a lens and other optical adjusting means 9 by using preset position information stored in a storage means 6a, is able to store arbitrary preset speed information in the storage means as a storage indicating operation means 8 is operated and performs position and speed preset drive control for driving the optical adjustment means to a position, corresponding to the stored preset position information at a speed corresponding to the stored preset speed information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical device and an optical device drive unit used in a television camera, a video camera system, and the like, and more particularly to a zoom lens device and a drive unit used in an ENG camera system and the like.

[0002]

2. Description of the Related Art In photography using a television camera or a video camera, various photography methods are employed, and various functions have been proposed to realize the photography method more simply and accurately. I have.

One of such functions is a position preset drive control function. This is a function in which an arbitrary zoom position is stored in advance as a preset position, and the zoom lens optical system is moved to the preset position by turning on a preset zoom switch during photographing.

[0004] Here, FIG. 13 shows a top external view of a zoom lens for an ENG camera, and FIG. 14 shows a side external view thereof, and this function will be described.

[0005] As shown in FIG. 13 and FIG.
A lens drive unit 31 containing a motor for electrically driving a zoom, a focus, an iris, and the like, a position detector, a control circuit, and the like is attached to a lens barrel (a main body) of the camera zoom lens. I have.

The driving unit 31 includes a zoom control switch 1 for controlling the electric drive of the zoom and a zoom speed for variably setting the driving speed of the zoom lens optical system with respect to the operation amount of the zoom control switch 1. A variable volume 3, a memory switch 8 for instructing storage of a preset position of the zoom lens,
A preset zoom switch 7 for instructing start of a preset operation is also provided.

Next, the setting of the preset position when the preset function is actually used, and the preset operation will be described.

To set the preset position, the photographer moves the zoom lens to a position to be preset in advance,
When the memory switch 8 is turned on, the zoom lens position at that time is stored as a preset position.

The preset operation is performed by turning on the preset zoom switch 7 by the photographer to electrically move the zoom lens to the preset position. The drive speed of the zoom lens at this time is determined by the set position of the zoom speed variable volume 3.

[0010]

However, in the above-described conventional drive unit 31, the drive speed of the zoom lens during the preset operation is controlled by a variable zoom speed for variably setting the drive speed of the zoom lens with respect to the operation amount of the zoom control switch 1. Since it is determined by the setting position of the volume 3, the following inconvenience occurs.

For example, when driving the zoom lens by operating the zoom control switch 1 is to be performed at the highest speed, and driving the zoom lens at the time of the preset operation is to be performed at the medium speed, the operation of the zoom control switch 1 is performed. Sets the zoom speed variable volume 3 to the highest speed, changes the setting of the zoom speed variable volume 3 to the medium speed before starting the preset operation, and again sets the zoom speed variable volume 3 to the highest speed after the end of the preset operation. , The operation becomes complicated, and it is actually very difficult to operate.

If the lower limit set on the low speed side by the zoom speed variable volume 3 is set too low, the operability of the zoom control switch 1 may be impaired. For this reason, there is a limit to the lower limit set on the low speed side of the zoom speed variable volume 3, and there is a disadvantage that the zoom lens driving speed during the preset operation cannot be set too low.

[0013]

In order to solve the above-mentioned problems, in the first invention of the present application, preset drive control is performed on a lens or other optical adjusting means using preset position information stored in a storage means. In the optical device, any preset speed information can be stored in the storage unit in response to the operation of the storage instruction operation unit, and the optical adjustment unit is moved to a position corresponding to the stored preset position information.
Position / speed preset drive control for driving at a speed corresponding to the stored preset speed information can be performed.

Specifically, when the optical adjustment means is driven and the storage instruction operation means is operated, the actual drive speed of the optical adjustment means at the time of operation of the storage instruction operation means is stored as preset speed information. Store it in the means. Alternatively, in the case where there is a drive command operating unit operated to generate a drive speed command of the optical adjustment unit according to the operation amount, when the drive command operating unit is operated and the storage instruction operating unit is operated Then, the drive speed command at the time of operation of the storage instruction operation means is stored in the storage means as preset speed information.

As described above, the driving speed at which the optical adjustment means is driven to the position corresponding to the preset position information is arbitrarily selected by the photographer or the like by operating the storage instruction operation means and stored in advance. By enabling the position / speed preset drive control, the complicated speed change operation required when using the conventional position preset drive control function can be eliminated, and the position preset drive control can be performed. It is possible to eliminate the inconvenience that the drive speed of the optical adjustment means cannot be set to a very low speed at the time of the execution.

Since the preset drive control of the optical adjustment means can be performed at a lower speed, it may be difficult for the photographer to determine whether or not the position / speed preset drive control is being performed. It is preferable to provide a display means for visually determining that the speed preset drive control is being performed.

According to a second aspect of the present invention, in the first aspect, the drive speed of the optical adjustment means is selected from a drive speed corresponding to the preset speed information and a maximum driveable drive speed. Speed operating means for operating the optical adjusting means at a driving speed selected by operating the speed selecting operating means.

As a result, it is possible to widen the range of the photographing method using the position / speed preset drive control, and it is possible to realize a more significant preset drive control function.

[0019]

(First Embodiment) FIG. 1 shows the structure of a lens device (optical device) according to a first embodiment of the present invention. 13 and 14 described above.
13 having the same function as the components of the present embodiment are denoted by the same reference numerals as those in FIGS.

1 is a zoom control switch (drive command operating means) operated by a photographer, and 2 is a zoom control switch for electrically driving a zoom lens optical system (optical adjusting means) 9 for adjusting the magnification of the lens device. A command signal generation circuit for generating a command signal for instructing a drive direction and a drive speed (may be a drive amount or a drive position) proportional to the operation amount of the switch 1.

Reference numeral 3 denotes a zoom speed variable volume for varying the driving speed of the zoom lens optical system 9 with respect to the amount of operation of the zoom control switch 1. Reference numeral 4 denotes a signal level and a shift conversion for inputting a command signal to the A / D conversion circuit 5. This is a command signal operation circuit to be performed. The A / D conversion circuit 5 converts an analog signal output from the command signal calculation circuit 4 into a digital signal.

A CPU 6 controls the operation of the present lens apparatus.
The CPU 6 is provided with a memory (storage means) 6a capable of storing a preset position (preset position information) and a preset speed (preset speed information). In addition, the CPU 6 drives the “memory position preset zoom control” to drive to the preset position stored in the memory 6a at the stored preset speed.
(Position / speed preset drive control).

Reference numeral 8 denotes a memory switch (storage instruction operating means) shared to give the CPU 6 a storage instruction of a preset position and a preset speed used for "memory position preset zoom control".

Reference numeral 7 denotes a position memory execution function for storing a preset position in the memory 6a when the memory switch 8 is turned on or at the same time as the memory switch 8 is turned on. A memory position preset zoom switch (control start operating means) having a function of instructing the start (and stop) of this control operation by being turned on after storage.

Reference numeral 10 denotes a zoom lens optical system 9 from the CPU 6.
A D / A conversion circuit for converting a command signal output to drive the D / A from a digital signal to an analog signal;
Signal level of the command signal output from the A conversion circuit 10,
A CPU command signal operation circuit 12 for performing shift conversion is a command signal changeover switch for switching between driving the zoom lens optical system 9 from the zoom control switch 1 and the CPU 6.

Reference numeral 13 denotes a power amplifier circuit for operating a motor 14 for driving the zoom lens optical system 9, reference numeral 15 denotes a speed detector for outputting a speed signal corresponding to the driving speed of the zoom lens optical system 9, and reference numeral 16 denotes a speed signal. Is a speed signal arithmetic circuit that performs a signal level and shift conversion in order to take the signal into the A / D conversion circuit 17. The A / D conversion circuit 17 converts an analog signal output from the speed signal calculation circuit 16 into a digital signal.

Reference numeral 18 denotes a position signal detector (position detecting means) for outputting a position signal corresponding to the position of the zoom lens optical system 9, and 19 denotes a signal level and shift conversion for taking the position signal into the A / D conversion circuit 20. Is a position signal calculation circuit that performs the following. The A / D conversion circuit 20 includes a position signal operation circuit 19
Is converted into a digital signal.

Reference numeral 21 denotes a preset operation display for performing a display for visually determining whether or not “memory position preset zoom control” is performed.

The memory position preset zoom switch 7 and the memory switch 8 may be provided integrally with a lens device body having a zoom lens optical system 9 or a focus lens optical system (not shown), or a cable may be connected to the lens device body. It may be provided to a zoom demand (external control unit) that is connected via the like and includes a thumb ring or the like instead of the zoom control switch 1.

The components other than the zoom lens optical system 9 in the above configuration, that is, the zoom control switch 1, each circuit such as the CPU 6, the motor 14, the speed detector 1
As shown in FIGS. 13 and 14, the position detector 18, the memory position preset zoom switch 7 and the memory switch 8 are mounted on or connected to a handy type lens device main body. Unit).

In the lens device or the lens driving unit having such a configuration, as a preparatory operation for storing the preset position, the zoom lens optical system 9 is motor-driven to the preset position, or the zoom lens is stored for storing the preset speed. It is necessary to drive the optical system 9 in advance by a motor.

Here, the drive control of the zoom lens optical system 9 from the zoom control switch 1 will be described first. When the zoom control switch 1 is operated, a command signal indicating a drive direction and a drive speed (may be a drive amount or a drive position) proportional to the operation amount is output from the command signal generation circuit 2. This command signal
The power is input to the power amplification circuit 13 via the zoom speed variable volume 3 for varying the drive speed of the zoom lens optical system 9 with respect to the operation amount of the zoom control switch 1 and the A side of the command signal changeover switch 12.
After the signal is amplified to a predetermined level, the signal is input to the motor 14. As a result, the motor 14 operates, and the zoom lens optical system 9 is driven.

The position of the zoom lens optical system 9 necessary for storing the preset position is determined by inputting the output from the position detector 18 to the CPU 6 via the position signal calculation circuit 19 and the A / D conversion circuit 20. Can be detected.

The actual driving speed of the zoom lens optical system 9 required for storing the preset speed is determined by the speed detector 1
3 can be detected by being input to the CPU 6 via the speed signal calculation circuit 16 and the A / D conversion circuit 17.

Further, as will be described later, it is determined whether or not the zoom control switch 1 necessary for storing the preset speed has been operated, by determining whether a command signal proportional to the operation amount of the zoom control switch 1 is provided by a command signal generation circuit. 2
And is input to the CPU 6 via the variable zoom speed volume 3, the command signal calculation circuit 4, and the A / D conversion circuit 5.

Next, a procedure for storing and setting the preset position and preset speed necessary for executing the above-mentioned "memory position preset zoom control" will be described.

First, a procedure for storing and setting a preset position will be described. In this storage setting procedure, the photographer moves the zoom lens optical system 9 to a position to be preset in advance, and then turns on the memory switch 8 while turning the memory position preset zoom switch 7 from off to on. The CPU 6 stores the position of the lens optical system 9 (the actual position detected through the position detector 18) as a preset position.

The processing of the CPU 6 at this time will be described with reference to FIG. First, as an initial setting, a predetermined zoom position such as a WIDE end is stored as a preset position in a preset position memory area formed in the memory 6a (step 101). The preset position at the time of the initial setting is the position at which the power of the previous lens device was turned on even at the position of the zoom lens optical system 9 when the power of the lens device was turned on and the position of the zoom lens optical system 9 desired by the photographer. The position of the zoom lens optical system 9 set inside may be used.

Next, the position of the zoom lens optical system 9 is obtained from the A / D conversion circuit 20 (step 102). Subsequently, it is determined whether or not the memory switch 8 is turned on (step 103). If the memory switch 8 is not turned on, the position of the zoom lens optical system 9 is obtained again from the A / D conversion circuit 20. (Step 102).

If the memory switch 8 is on, it is determined whether or not the state of the memory position preset zoom switch 7 has changed from off to on (step 104). If the state has not changed to ON, the process returns to step 102.

If the state of the memory position preset zoom switch 7 has changed from off to on, the position of the zoom lens optical system 9 acquired in step 102 is stored in the preset position memory area as a new preset position. (Step 105).

Next, the procedure for setting and storing the preset speed will be described. In this storage setting procedure, when the photographer operates the zoom control switch 1 to drive the zoom lens optical system 9 at a preset speed in advance and turns the memory switch 8 from off to on when the memory switch 8 is turned on. The CPU 6 stores the drive speed (the actual drive speed of the zoom lens optical system 9 detected through the speed detector 15) as the preset speed.

The processing of the CPU 6 at this time will be described with reference to FIG. First, a predetermined zoom drive speed such as the highest speed is stored as a preset speed in a preset speed memory area configured in the memory 6a as an initial setting (step 201). The preset speed at the time of the initial setting may be the zoom drive speed desired by the photographer or the zoom drive speed set during the previous power-on of the lens device.

Next, the drive speed of the zoom lens optical system 9 is obtained from the A / D conversion circuit 17 (step 202).
Thereafter, the data of the A / D conversion circuit 5 is acquired, and it is determined whether or not the zoom control switch 1 is operated (step 203).
Is not operated, the A / D conversion circuit 17 is again operated.
The zoom speed is obtained from (step 202).

If the zoom control switch 1 has been operated, it is determined whether or not the state of the memory switch 8 has changed from off to on (step 204), and the state of the memory switch 8 has changed from off to on. If not, the process returns to step 202.

If the state of the memory switch 8 has changed from off to on, the speed of the zoom lens optical system 9 obtained in step 202 is stored in the preset speed memory area as a new preset speed (step 2).
05).

Next, the operation of "memory position preset zoom control" (hereinafter simply referred to as "preset operation") will be described. The control of the zoom lens optical system 9 at the time of this preset operation is such that the command signal output from the CPU 6 is a D / A conversion circuit 10, a CPU command signal arithmetic circuit 1
1. By being input to the motor 14 via the B side of the command signal changeover switch 12 and the power amplifier circuit 13,
This is performed by driving the zoom lens optical system 9 to a preset position at a preset speed.

The processing of the CPU 6 at this time is shown in FIGS.
This will be described with reference to FIG. First, it is determined whether or not the zoom control switch 1 is operated (step 40).
1) If the zoom control switch 1 is operated, the command signal switch 12 is switched to the A side in order to control the zoom lens optical system 9 from the zoom control switch 1 (step 402).

Next, it is determined whether or not the preset operation is performed (step 403). If the preset operation is not performed, it is determined whether or not the zoom control switch 1 is operated again (step 403). Return to 401).

If the preset operation is being performed in step 403, the preset operation indicator 21 is turned off (step 404), and then the preset operation is terminated (stopped) (step 405). Then, the process returns to the determination of whether or not the zoom control switch 1 has been operated (step 401).

On the other hand, if the zoom control switch 1 is not operated in step 401, it is determined whether or not a preset operation is being performed (step 40).
6) If the preset operation has not been performed, the process returns to the determination of whether or not the zoom control switch 1 has been operated (step 401).

If the preset operation has been performed in step 406, the speed of the zoom lens optical system 9 is obtained from the A / D conversion circuit 17 (step 407). The position of the optical system 9 is obtained (Step 408).

Next, it is determined whether or not the zoom position obtained in step 408 is equal to the preset position stored in the memory 6a in advance by the flow shown in FIG. 2 (step 409). If the preset position is the same, the command signal changeover switch 12 is switched to the A side (step 410), and the preset operation display 2
1 is turned off (step 411), and the preset operation ends (step 412).

If the zoom position is not equal to the preset position in step 409, the zoom speed acquired in step 407 is equal to the preset speed previously stored in the memory 6a by the flow shown in FIG. It is determined whether or not the zoom speed is within a predetermined allowable range with respect to the preset speed (step 413).

If the zoom speed is not equal to the preset speed, it is determined whether or not the preset speed is faster than the zoom speed (step 414). If the preset speed is faster than the zoom speed, it is determined. , Increase the command signal output to the D / A conversion circuit 10 (step 41)
6). If the preset speed is lower than the zoom speed, the command signal output to the D / A conversion circuit 10 is reduced (step 415).

After the above processes are completed, it is determined whether or not the memory position preset zoom switch 7 (shown as a preset zoom switch 7 in FIGS. 4 and 5) has changed from off to on (step 417). If the memory position preset zoom switch 7 has not changed from off to on, it is determined whether or not the zoom control switch 1 has been operated (step 40).
Return to 1).

On the other hand, if the memory position preset zoom switch 7 has changed from off to on, it is determined whether or not a preset operation has been performed (step 418). Is
The command signal switch 12 is switched to the B side (step 419), and the preset operation display 21 is turned on (step 420). Further, the preset operation is started at the preset speed stored in the memory 6a according to the flow shown in FIG. 3 (step 421).

Thereafter, when the zoom lens optical system 9 reaches the preset position (step 409), the command signal switch 12 is switched to the A side (step 410), and the preset operation display 21 is turned off (step 411).
Ends the preset operation (step 412).

On the other hand, if the preset operation is being performed in step 418, the command signal switch 12
Is switched to the A side (step 422), the preset operation indicator 21 is turned off (step 423), and then the preset operation is terminated (stopped) (step 424).

As described above, according to the present embodiment, the driving speed for driving the zoom lens optical system 9 to the preset position is arbitrarily selected by the photographer or the like by operating the memory switch 8 in advance, and By enabling a preset operation (memory position preset zoom control) with the preset speed stored in the memory 6a, for example, a normal zoom operation can be performed without performing a complicated speed setting operation when using this preset operation function. The drive speed can be changed such that the zoom lens optical system 9 is driven at high speed during drive control, and the zoom lens optical system 9 is driven at medium speed during preset operation.

Further, since the preset speed is set by detecting the actual drive speed of the zoom lens optical system 9, the preset speed can be considerably reduced without affecting the operability of the zoom control switch 1. It is also possible to set a low speed.

Further, according to the present embodiment, the preset operation indicator 21 is turned on when the preset operation is performed. Therefore, even if the preset operation is performed at a low speed, for example, the preset operation can be performed by the photographer. It is possible to clearly recognize whether or not the operation is being performed.

(Second Embodiment) In the first embodiment,
Although the description has been given only of the case of “memory position preset zoom control”, that is, the case where the preset operation is performed at a preset speed at a preset speed, the drive speed of the zoom lens optical system 9 during the preset operation is set at the preset speed. By adding a switching function of whether to perform the operation at the highest speed that can be driven by the lens device or the drive unit, the range of shooting methods when shooting TV and video is further expanded, and a more meaningful preset function is provided. It can be realized.

FIG. 6 shows the configuration of the lens device of the present embodiment. Note that, in the present embodiment, components common to the first embodiment are denoted by the same reference numerals as in the first embodiment.

In the present embodiment, the configuration of the first embodiment is
A preset mode changeover switch (speed selection operating means) 22 for determining whether the driving speed of the zoom lens optical system 9 during the preset operation is to be performed at the preset speed or at the maximum speed is added.

The memory position preset zoom switch 7, the memory switch 8, and the preset mode changeover switch 22 may be provided integrally with the zoom lens optical system 9 or a lens apparatus body having a focus lens optical system (not shown). A zoom demand (external control unit) connected to the lens apparatus body via a cable or the like and provided with a thumb ring or the like instead of the zoom control switch 1.

The components other than the zoom lens optical system 9 in the above configuration, that is, the zoom control switch 1, the respective circuits such as the CPU 6, the motor 14, the speed detector 1
5, a position detector 18, a memory position preset zoom switch 7, a memory switch 8, and a preset mode changeover switch 22, as shown in FIGS. 13 and 14, a lens used by being attached to or connected to a handy type lens device body. It may be provided in a drive unit (optical device drive unit).

In the lens device or the lens driving unit having such a configuration, as a pre-operation for storing the preset position, the zoom lens optical system 9 is motor-driven to the preset position, or the zoom lens is stored for storing the preset speed. It is necessary to drive the optical system 9 in advance by a motor. This is the same as in the first embodiment.

The drive control method of the zoom lens optical system 9 from the zoom control switch 1, the method of detecting the position of the zoom lens optical system 9 necessary for storing the preset position, and the method necessary for storing the preset speed are described. The method of detecting the drive speed of the zoom lens optical system 9 and the method of determining whether or not the zoom control switch 1 necessary for storing the preset speed has been operated are the same as in the first embodiment.

Next, the preset operation in this embodiment will be described. In the control of the zoom lens optical system 9 at the time of the preset operation of the present embodiment, the command signal output from the CPU 6 is the D / A conversion circuit 10, the CPU command signal calculation circuit 11, the B side of the command signal switch 12, and the power. This embodiment is the same as the first embodiment in that the operation is performed by being input to the motor 14 via the amplifier circuit 13.
6, a preset mode for outputting a command signal for driving the zoom lens optical system 9 at a preset preset speed and a maximum speed mode for outputting a command signal for driving at the highest speed are selectively set. This is different from the first embodiment. Regardless of which mode is set, there is the same point of driving to a preset position that is set in advance.

The processing of the CPU 6 at this time is shown in FIGS.
This will be described with reference to FIG. First, it is determined whether or not the zoom control switch 1 has been operated (step 50).
1) If the zoom control switch 1 has been operated, the command signal switch 12 is switched to the A side in order to control the zoom lens optical system 9 from the zoom control switch 1 (step 502).

Next, it is determined whether or not the preset operation is performed (step 503). If the preset operation is not performed, it is determined whether or not the zoom control switch 1 is operated again (step 503). Return to 501).

If the preset operation is being performed in step 503, the preset operation indicator 21 is turned off (step 504), and then the preset operation is terminated (stopped) (step 505). Then, the process returns to the determination of whether or not the zoom control switch 1 has been operated (step 501).

On the other hand, if the zoom control switch 1 is not operated in step 501, it is determined whether or not a preset operation is being performed (step 50).
6) If the preset operation has not been performed, the process returns to the determination of whether or not the zoom control switch 1 has been operated (step 501).

If the preset operation has been performed in step 506, the speed of the zoom lens optical system 9 is obtained from the A / D conversion circuit 17 (step 507). The position of the optical system 9 is obtained (Step 508).

Next, it is determined whether or not the zoom position obtained in step 508 is equal to the preset position previously stored in the memory 6a by the flow shown in FIG. 2 described in the first embodiment. (Step 509) If the zoom position is equal to the preset position, the command signal switch 12 is switched to the A side (Step 51).
0), the preset operation indicator 21 is turned off (step 511), and the preset operation ends (step 51).
2).

If the zoom position is not equal to the preset position in step 509, it is determined whether or not the preset mode is selected by the preset mode switch 22 (step 513).

If the preset mode has been selected, the zoom speed obtained in step 507 and the flow shown in FIG. 3 described in the first embodiment and stored in the memory 6a in advance. It is determined whether or not the preset speed is equal (for example, whether or not the zoom speed falls within a predetermined allowable range with respect to the preset speed) (step 514).

If the zoom speed is not equal to the preset speed, it is determined whether or not the preset speed is faster than the zoom speed (step 515). If the preset speed is faster than the zoom speed, it is determined. , Increase the command signal output to the D / A conversion circuit 10 (step 51).
7). If the preset speed is slower than the zoom speed, the command signal output to the D / A conversion circuit 10 is reduced (step 516).

When the preset mode is not selected and when the zoom speed is equal to the preset speed, the process proceeds to the next step 518.

After the above processes are completed, it is determined whether or not the memory position preset zoom switch 7 (shown as a preset zoom switch 7 in FIGS. 7 and 8) has changed from off to on (step 518). If the memory position preset zoom switch 7 has not changed from off to on, it is determined whether the zoom control switch 1 has been operated (step 50).
Return to 1).

On the other hand, if the memory position preset zoom switch 7 has changed from off to on, it is determined whether or not a preset operation has been performed (step 519). Is
The command signal changeover switch 12 is switched to the B side (step 523), and the preset operation display 21 is turned on (step 524). Then, it is determined whether or not the preset mode has been selected by the preset mode changeover switch 22 (step 525). If the preset mode has not been selected, the preset operation is started at the highest drivable speed (step 526). If the preset mode is selected, a preset operation is started at a preset speed (step 527).

Thereafter, when the zoom lens optical system 9 reaches the preset position (step 509), the command signal switch 12 is switched to the A side (step 510), and the preset operation display 21 is turned off (step 51).
1), the preset operation ends (step 512).

On the other hand, if the preset operation is being performed in step 519, the command signal switch 12
Is switched to the A side (step 520), the preset operation indicator 21 is turned off (step 521), and then the preset operation is terminated (stopped) (step 522).

As described above, according to the present embodiment, in addition to the effects obtained by the first embodiment, whether the preset operation is performed at the preset speed or the maximum speed at which the lens device or the like can be driven is performed. Can be arbitrarily selected by the photographer, so that the range of photographing techniques for photographing using a television camera or a video camera can be further expanded, and a more meaningful preset function can be realized.

In the first and second embodiments,
The case where the preset speed used for the preset operation is obtained from the actual driving speed of the zoom lens optical system 9 has been described. However, the preset speed may be obtained from a speed command signal proportional to the operation of the zoom control switch 1. .

In the first and second embodiments,
The speed detector 1 detects the driving speed of the zoom lens optical system 9.
Although the description has been given of the case where the operation is performed using the speed signal output from the position detector 5, the drive speed may be detected by acquiring the position signal output from the position detector at regular intervals.

(Third Embodiment) In the first embodiment described above, the "memory position preset zoom control", that is, the preset speed used for the preset operation is obtained from the actual driving speed of the zoom lens optical system 9, and the zoom lens optical system 9 is used. The case has been described where the acceleration / deceleration control of the zoom lens optical system 9 is performed so that the actual drive speed of the system 9 is equal to the preset speed. And the above-described acceleration / deceleration control may not be performed, so that simple control with a simple circuit configuration may be performed. This eliminates the need for the speed detector 15, the speed signal operation circuit 16, and the A / D conversion circuit 17, which are required in the first embodiment.

FIG. 9 shows the configuration of the lens device of the present embodiment. Note that, in the present embodiment, components common to the first embodiment are denoted by the same reference numerals as in the first embodiment.

In the present embodiment, the speed detector 15, the speed signal operation circuit 16 and the A /
It has a configuration in which the D conversion circuit 17 is removed.

Note that the memory position preset zoom switch 7 and the memory switch 8 may be provided integrally with a lens device body having a zoom lens optical system 9 or a focus lens optical system (not shown), or a cable may be connected to the lens device body. It may be provided to a zoom demand (external control unit) that is connected via the like and includes a thumb ring or the like instead of the zoom control switch 1.

The components of the above configuration except for the zoom lens optical system 9, ie, the zoom control switch 1, each circuit such as the CPU 6, the motor 14, and the position detector 1
8, the memory position preset zoom switch 7 and the memory switch 8 are provided on a lens driving unit (optical device driving unit) which is used by being attached to or connected to a handy type lens device main body, as shown in FIGS. Is also good.

In the lens apparatus or lens driving unit having such a configuration, as a preparatory operation for storing the preset position, the zoom lens optical system 9 is driven by a motor to the preset position, and the zoom control is performed for storing the preset speed. It is necessary to operate the switch 1 in advance.

The drive control method of the zoom lens optical system 9 from the zoom control switch 1 and the method of detecting the position of the zoom lens optical system 9 necessary for storing the preset position are the same as in the first embodiment. .

The detection of the speed command signal output from the command signal generating circuit 2 in proportion to the amount of operation of the zoom control switch 1 required for storing the preset speed is performed by detecting the speed command signal by using a zoom speed variable volume. 3. CP via command signal operation circuit 4 and A / D conversion circuit 5
This is possible by inputting to U6. Similarly, it is possible to determine whether or not the zoom control switch 1 has been operated.

Here, the procedure for storing the preset speed (processing of the CPU 6) in the present embodiment will be described with reference to FIG.
Explanation will be made using 0. First, as an initial setting, the memory 6a
A predetermined zoom drive speed such as the highest speed is stored as a preset speed command in a preset speed command memory area configured in the step (601).

Next, a speed command signal is obtained from the A / D conversion circuit 5 (step 602), and thereafter it is determined whether or not the zoom control switch 1 is operated (step 603). If the zoom control switch 1 has not been operated, the speed command signal is obtained again from the A / D conversion circuit 5 (step 602).

If the zoom control switch 1 has been operated, it is determined whether or not the state of the memory switch 8 has changed from off to on (step 604), and the state of the memory switch 8 has changed from off to on. If not, the process returns to step 602 again.

If the state of the memory switch 8 has changed from off to on, the speed command signal acquired in step 602 is stored in the preset speed command memory area as a new preset speed command (step 605).

Next, the preset operation in this embodiment will be described. In the control of the zoom lens optical system 9 at the time of the preset operation of the present embodiment, the command signal output from the CPU 6 is the D / A conversion circuit 10, the CPU command signal calculation circuit 11, the B side of the command signal switch 12, and the power. This is performed by being input to the motor 14 via the amplifier circuit 13 and driving the zoom lens optical system 9 to the preset position at a speed corresponding to the preset speed command.

The processing of the CPU 6 during the preset operation will be described with reference to FIGS. First, it is determined whether or not the zoom control switch 1 has been operated (step 701). If the zoom control switch 1 has been operated, control of the zoom lens optical system 9 is performed from the zoom control switch 1. The command signal switch 12 is switched to the A side (step 7).
02). Then, it is determined whether or not the preset operation has been performed (step 703). If the preset operation has not been performed, the zoom control switch 1 is again activated.
The process returns to the determination of whether or not has been operated (step 701).

On the other hand, if the preset operation is being performed in step 703, the preset operation display 21 is turned off (step 704), and then the preset operation is terminated (stopped) (step 705). Then, the process returns to the determination of whether or not the zoom control switch 1 has been operated (step 701).

If it is determined in step 701 that the zoom control switch 1 has not been operated, it is determined whether or not the preset operation has been performed (step 706). The process returns to the determination of whether the control switch 1 has been operated (step 701).

If the preset operation has been performed in step 706, the position of the zoom lens optical system 9 is obtained from the A / D conversion circuit 20 (step 707).

Next, it is determined whether or not the zoom position obtained in step 707 is equal to the preset position stored in advance by the flow shown in FIG. 2 described in the first embodiment (step 708). If the zoom position is equal to the preset position, the command signal changeover switch 12 is switched to the A side (step 709), the preset operation display circuit 21 is turned off (step 710), and the preset operation ends (step 711). ).

If the zoom position is not equal to the preset position, the process directly proceeds to step 712.

After the above processes are completed, it is determined whether or not the memory position preset zoom switch 7 has changed from off to on (step 712), and the memory position preset zoom switch 7 has changed from off to on. If not, the process returns to the determination of whether or not the zoom control switch 1 has been operated (step 701).

If the memory position preset zoom switch 7 has changed from off to on, it is determined whether or not a preset operation is being performed (step 71).
3) If the preset operation has not been performed, the command signal changeover switch 12 is switched to the B side (step 7).
14), the preset operation display 21 is turned on (step 715). Thereafter, the preset speed command stored and set in advance is output to the D / A conversion circuit 10 according to the flow shown in FIG. 8, and the preset operation is started at a speed corresponding to the preset speed command (step 716).

Thereafter, when the zoom lens optical system 9 reaches the preset position (step 708), the command signal switch 12 is switched to the A side (step 709), and the preset operation display 21 is turned off (step 71).
0), the preset operation ends (step 711).

If the preset operation is being performed in step 713, the command signal changeover switch 12 is switched to the A side (step 717), the preset operation display 21 is turned off (step 718), and then the preset operation is started. End (stop) (step 719).

As described above, according to the present embodiment, the driving speed for driving the zoom lens optical system 9 to the preset position is arbitrarily selected by the photographer or the like in advance by operating the memory switch 8 and the memory is selected. By enabling a preset operation (memory position preset zoom control) with the preset speed stored in the memory 6a, for example, a normal zoom operation can be performed without performing a complicated speed setting operation when using this preset operation function. The drive speed can be changed such that the zoom lens optical system 9 is driven at high speed during drive control, and the zoom lens optical system 9 is driven at medium speed during preset operation.

Further, since the preset speed is set by detecting a speed command signal generated in proportion to the operation of the zoom control switch 1, the operability of the zoom control switch 1 is not affected. Instead, the preset speed can be set to a considerably low speed.

Further, according to the present embodiment, the preset operation indicator 21 is turned on when performing the preset operation. Therefore, even when the preset operation is performed at a low speed, for example, the photographer can be preset. It is possible to clearly recognize whether or not the operation is being performed.

In each of the above embodiments, the case where the preset speed is stored after determining that the zoom control switch 1 has been operated has been described, but the change in the position signal output from the position detector and the like are described. The preset speed may be stored after determining that the zoom lens optical system 9 is being driven.

In each of the above embodiments, the preset position is stored by turning the memory position preset switch 7 from OFF to ON while the memory switch 8 is ON, but the memory switch 8 and the memory position preset are stored. The preset position may be stored when the switch 7 and the switch 7 are simultaneously turned on.

Further, in the above embodiment, the case where the memory switch 8 is constituted by a single switch has been described. However, in order to prevent an erroneous operation or the like, a set of two or more memory switches is provided, and both memory switches are provided. Preset information may be stored according to the operation of the switch.

In each of the above embodiments, the case where the preset drive control regarding the zoom lens optical system is performed has been described. However, the present invention relates to the optical adjustment means other than the zoom lens optical system, such as the preset lens optical system and the iris preset. The present invention can be applied to a case where drive control is performed.

[0118]

As described above, according to the first aspect of the present invention, the driving speed when driving the optical adjustment means to the position corresponding to the preset position information is determined in advance by the photographer or the like by the storage instruction operation means. Position / speed preset drive control, which can be arbitrarily selected by operation and stored as a speed, is possible, eliminating the need for complicated speed change operations required when using the conventional position preset drive control function. In addition, the inconvenience that the drive speed of the optical adjustment means cannot be set too low when the position preset drive control is executed can be eliminated.

If display means for visually determining that the position / speed preset drive control is being performed is provided, the present optical device or the present optical device which can perform preset drive control of the optical adjustment means at a lower speed can be provided. The photographer using the drive unit can be made to clearly recognize that the position / speed preset drive control is being performed.

According to the second aspect of the present invention, the first aspect
In the invention of the above, since the drive speed of the optical adjustment means can be selected to be a drive speed corresponding to the preset speed information or a driveable maximum drive speed,
It is possible to widen the range of the shooting method using the position / speed preset drive control, and to realize a more significant preset drive control function.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a lens device according to a first embodiment of the present invention.

FIG. 2 is a storage setting flowchart of a preset position used for a memory position preset zoom control in the lens device.

FIG. 3 is a flowchart for storing and setting a preset speed used for memory position preset zoom control in the lens apparatus.

FIG. 4 is a processing flowchart of memory position preset zoom control in the lens device.

FIG. 5 is a processing flowchart of memory position preset zoom control in the lens device.

FIG. 6 is a configuration diagram of a lens device according to a second embodiment of the present invention.

FIG. 7 is a processing flowchart of memory position preset zoom control in the lens device of the second embodiment.

FIG. 8 is a processing flowchart of memory position preset zoom control in the lens device of the second embodiment.

FIG. 9 is a configuration diagram of a lens device according to a third embodiment of the present invention.

FIG. 10 is a storage setting flowchart of a preset speed used for memory position preset zoom control in the lens device of the third embodiment.

FIG. 11 is a processing flowchart of memory position preset zoom control in the lens device of the third embodiment.

FIG. 12 is a processing flowchart of memory position preset zoom control in the lens device of the third embodiment.

FIG. 13 is a plan view of a conventional lens drive unit.

FIG. 14 is a side view of a conventional lens drive unit.

[Description of Signs] 1 ... Zoom control switch 2 ... Command signal generation circuit 3 ... Variable zoom speed control 4 ... Command signal calculation circuit 5,17,20 A / D conversion circuit 6 ... CPU 6a ... Memory 7 ... Memory position preset Zoom switch 8 ... Memory switch 9 ... Zoom lens optical system 10 ... D / A conversion circuit 11 ... CPU command signal calculation circuit 12 ... Command signal changeover switch 13 ... Power amplification circuit 14 ... Motor 15 ... Speed detector 16 ... Speed signal calculation Circuit 18 ... Position detector 19 ... Position signal calculation circuit 21 ... Preset operation display 22 ... Preset mode changeover switch 31 ... Lens drive unit

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[Procedure amendment]

[Submission date] April 28, 2000 (200.4.2
8)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0051

[Correction method] Change

[Correction contents]

On the other hand, if the zoom control switch 1 is not operated in step 401, it is determined whether or not a preset operation is being performed (step 40).
6), when the preset operation is not performed, stearyl
Proceed to step 417 .

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name]

[Correction method] Change

[Correction contents]

On the other hand, if the zoom control switch 1 is not operated in step 501, it is determined whether or not a preset operation is being performed (step 50).
6), when the preset operation is not performed, stearyl
Proceed to step 518 .

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0103

[Correction method] Change

[Correction contents]

[0103] When the zoom control switch 1 is not operated at step 701, it is determined whether the preset operation is being performed (step 706), if the preset operation is not being performed, step 71
Proceed to 2 .

[Procedure amendment 4]

[Document name to be amended] Drawing

[Correction target item name] Fig. 4

[Correction method] Change

[Correction contents]

FIG. 4

[Procedure amendment 5]

[Document name to be amended] Drawing

[Correction target item name] Fig. 7

[Correction method] Change

[Correction contents]

FIG. 7

[Procedure amendment 6]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG. 11

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H044 AF01 DA02 DB02 DC01 DC06 DC08 DE04 DE06 5C022 AA00 AB66 AC13 AC14 AC32 AC54 AC69 AC74

Claims (26)

[Claims] An optical apparatus for performing a preset drive control using preset position information stored in a storage means for a lens or other optical adjustment means, wherein an arbitrary preset is performed in response to an operation of a storage instruction operation means. Speed information can be stored in a storage means, and a position / speed preset drive control for driving the optical adjustment means to a position corresponding to the stored preset position information at a speed corresponding to the stored preset speed information is performed. An optical device characterized by the above-mentioned. 2. When the optical adjustment means is driven and the storage instruction operation means is operated, the actual drive speed of the optical adjustment means at the time of operation of the storage instruction operation means is set as preset speed information. The optical device according to claim 1, wherein the optical device is stored in a storage unit. 3. A drive command operating means which is operated to generate a drive speed command of said optical adjusting means according to an operation amount, wherein said drive command operating means is operated, and said storage instruction operation is performed. 2. The optical device according to claim 1, wherein when the device is operated, the drive speed command at the time of operation of the storage instruction operation device is stored in the storage device as preset speed information. 4. When the position / speed preset drive control is being performed, an actual drive speed of the optical adjustment means is compared with a drive speed corresponding to preset speed information, and these two drive speeds are made to substantially match. 4. The optical device according to claim 1, further comprising controlling the actual driving speed of the optical adjustment means. 5. The optical device according to claim 1, further comprising a display unit for displaying that the position / speed preset drive control is being performed. 6. A speed selection operation means operated to select whether the drive speed of the optical adjustment means is set to a drive speed corresponding to preset speed information or to a maximum drivable drive speed. The optical device according to any one of claims 1 to 5, wherein the optical adjustment unit is driven at a drive speed selected by operating the speed selection operation unit. 7. The optical device according to claim 1, further comprising a control start operation unit operated to start the position / speed preset drive control. 8. The control according to claim 7, wherein the preset drive control is stopped when the control start operation means is operated while the position / speed preset drive control is being performed. Optical device. 9. A drive command operating means operated to generate a drive speed command of the optical adjustment means according to an operation amount, wherein the position / speed preset drive control is performed. In response to the drive command operating means being operated,
9. The optical device according to claim 1, wherein the preset drive control is stopped. 10. A position detecting means for detecting an actual driving position of the optical adjustment means, wherein the storage means detects the position by the position detecting means in response to the operation of the storage instruction operating means. The stored actual driving position of the optical adjustment unit is stored as preset position information in the storage unit.
The optical device according to any one of the above. 11. A control start operation means operated to start preset drive control, wherein the storage instruction operation means is operated and the control start operation means is operated, 11. The optical device according to claim 10, wherein an actual drive position of the optical adjustment unit detected by the position detection unit is stored in the storage unit as preset position information. 12. The method according to claim 11, wherein the control start operation means is operated in a state where the storage instruction operation means is operated or simultaneously with the operation of the storage instruction operation means. 12. The optical device according to claim 11, wherein an actual driving position of the optical adjustment unit is stored as preset position information in the storage unit. 13. An optical apparatus mounted or connected to a main body of an optical device having a lens or other optical adjusting means and performing preset drive control using preset position information stored in a storage means for the optical adjusting means. In response to the operation of the instruction operation means, any preset speed information can be stored in the storage means, and the optical adjustment means is stored at the position corresponding to the stored preset position information, and the stored preset speed information is stored in the storage means. An optical device drive unit for performing position / speed preset drive control for driving at a corresponding speed. 14. When the optical adjustment means is driven and the storage instruction operation means is operated, an actual drive speed of the optical adjustment means at the time of operation of the storage instruction operation means is set as preset speed information. 14. The optical device driving unit according to claim 13, wherein the unit is stored in a storage unit. 15. A driving command operating means which is operated to generate a driving speed command of said optical adjusting means according to an operation amount, wherein said driving command operating means is operated, and said storage instruction operation is performed. 14. The optical device drive unit according to claim 13, wherein when the device is operated, the drive speed command at the time of operation of the storage instruction operation device is stored in the storage device as preset speed information. 16. When the position / speed preset drive control is being performed, an actual drive speed of the optical adjustment means is compared with a drive speed corresponding to preset speed information, and these two speeds are made to substantially match. The optical device driving unit according to claim 13, wherein the optical driving unit controls the actual driving speed of the optical adjustment unit. 17. The optical device drive unit according to claim 13, further comprising a display unit for displaying that the position / speed preset drive control is being performed. 18. A speed selection operation means operated to select whether the drive speed of the optical adjustment means is set to a drive speed corresponding to preset speed information or a maximum drive speed capable of being driven. 18. The optical device drive unit according to claim 13, wherein the optical adjustment unit is driven at a drive speed selected by operating the speed selection operation unit. 19. The optical device drive unit according to claim 13, further comprising control start operation means operated to start said position / speed preset drive control. 20. The apparatus according to claim 19, wherein when the position / speed preset drive control is being performed, the preset drive control is stopped in response to the operation of the control start operating means. Optical device. 21. A drive command operating means operated to generate a drive speed command of the optical adjustment means according to an operation amount, wherein the position / speed preset drive control is performed. In response to the drive command operating means being operated,
21. The optical device drive unit according to claim 13, wherein the preset drive control is stopped. 22. A control device comprising: a position detection unit for detecting an actual driving position of the optical adjustment unit; wherein the storage unit detects the position by the position detection unit in response to an operation of the storage instruction operation unit 22. The optical device driving unit according to claim 13, wherein the actual driving position of the optical adjustment unit is stored as preset position information in the storage unit. 23. Control start operation means operated to start preset drive control, wherein the storage instruction operation means is operated and the control start operation means is operated, 23. The optical device drive unit according to claim 22, wherein an actual drive position of the optical adjustment unit detected by the position detection unit is stored as preset position information in the storage unit. 24. The control apparatus according to claim 23, wherein the control start operation means is operated while the storage instruction operation means is being operated or simultaneously with the operation of the storage instruction operation means. 24. The optical device drive unit according to claim 23, wherein an actual drive position of the optical adjustment unit is stored in the storage unit as preset position information. 25. A camera system, comprising: the optical device according to claim 1; and a camera to which the optical device is attached. 26. An optical device driving unit according to claim 13, comprising: an optical device main body to which the driving unit is mounted or connected; and a camera to which the optical device main body is mounted. A camera system comprising: