JP3450793B2 - Optical device, optical device drive unit and camera system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical device such as a zoom lens used in a television camera, a video camera or the like.

[0002]

2. Description of the Related Art Optical devices such as a TV lens and a video lens are provided with optical adjusting means such as a zoom lens optical system, a focus lens optical system, and a light quantity adjusting system, and the drive speed of these optical adjusting means is controlled. There are many things that can be done.

A zoom switch and a zoom demand which are operated to command the driving of the optical adjusting means are proposed in, for example, Japanese Patent Laid-Open No. 40940/51. In the optical device proposed in this publication, servo means including a drive system such as a motor and a control system for controlling the operation of the drive system is provided for a zoom lens optical system such as a television lens or a video lens. A zoom switch or zoom demand is used to give a command signal to the control system in this servo means.

The actual zoom operation can be adjusted from a low speed to a high speed to a zoom speed desired by a photographer according to the operation amount of a zoom switch or a thumb ring for zoom demand.

By the way, in photographing with a television camera or a video camera, various photographing methods are adopted.
One of them is zooming at a constant speed (for example, low speed), and this constant speed zooming may be repeated many times during shooting.

On the other hand, the present applicant drives the zoom lens optical system in a prestored drive direction at a prestored drive speed in order to easily execute such constant speed zooming. An optical device having a function (hereinafter referred to as a speed preset function) is proposed.

Specifically, for example, when the zoom lens optical system is being driven at an arbitrary speed, the driving speed (and the driving direction) is changed by operating the storage instruction operating means (memory switch, etc.). The zoom lens optical system is stored at the drive speed (and direction) corresponding to the stored preset speed information in response to the operation of the preset drive start operation means (preset switch, etc.). It

[0008]

However, although the speed preset function described above makes it possible to easily repeat zooming at a constant speed any number of times, the drive speed of the zoom lens optical system is changed during execution of the speed preset function. There is a problem that adjustment, especially fine adjustment cannot be performed.

In this respect, the operation of stopping the execution of the speed preset function (for example, the re-operation of the preset drive start operation means) is performed to perform a normal zoom operation on the zoom switch or the like to obtain a desired drive speed. Although it is possible to do so, the operation becomes complicated and it becomes difficult to maintain the speed after the change.

[0010]

In order to solve the above problems BRIEF SUMMARY OF THE INVENTION In the present invention, storing lenses and other optical adjusting means
In an optical device or an optical device drive unit that performs preset drive control for driving at a speed corresponding to preset speed information that is the drive speed information stored in the means, in response to operation of a predetermined operation means during preset drive control. The preset speed information is changed and set so that the drive speed of the optical adjusting means can be changed.

That is, the preset speed information which determines the drive speed of the optical adjusting means in the preset drive control is changed and set according to the operation of the predetermined operation means during the preset drive control. This makes it possible to increase or decrease the drive speed of the optical adjustment means while continuing the preset drive control simply by operating the predetermined operation means.

As a method of changing the preset speed information,
A method of setting the change amount of the preset speed information based on the operation amount of the predetermined operation means and the drive speed of the optical adjustment means at the time of this operation may be used, or every time the predetermined operation means is operated once at this operation time. A method of setting the change amount of the preset speed information based on the drive speed of the optical adjusting means may be used. Further, the change amount of the preset speed information may be set according to the operation amount of the predetermined operation means regardless of the drive speed at the time of operation.

The predetermined operating means may be a zoom switch, a zoom demand, or the like that is operated to output a drive command during normal zoom drive control, or the speed during preset drive control. A dedicated operating means for changing may be used.

Further, in the preset drive control, the driving direction information stored in the storage means is stored at a speed corresponding to the preset speed information stored in the storage means of the optical adjusting means.
Direction (or drive position) corresponding to preset direction information that is
(The position corresponding to the preset position information, which is the position information), and when the predetermined operation means has two operation directions corresponding to the two drive directions of the optical adjustment means, the predetermined operation means is The preset speed information may be changed to the speed increasing side when the operation is performed in one of the predetermined two operation directions, and the preset speed information may be changed to the deceleration side when the operation is performed in the other predetermined operation direction.
When the predetermined operation means is operated in the operation direction corresponding to the current drive direction of the optical adjustment means out of the two operation directions, the preset speed information is changed to the speed increasing side, and the current drive direction of the optical adjustment means is defined. The preset speed information may be changed to the deceleration side when operated in the operation direction corresponding to the opposite direction.

Further, preset speed information (and preset speed information or position information) at the end of the preset drive control may be stored and held and set as preset speed information at the start of the next preset drive control. .

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIG. 1 shows the configuration of a lens device (optical device) according to a first embodiment of the present invention. Further, FIG. 2 shows an external view of the upper portion of the lens device.

In these figures, 1 is a zoom switch (predetermined operating means) operated by a photographer, and 2 is a zoom switch.
Is a command signal generator that outputs a command signal for instructing a driving direction and a driving speed (may be a driving amount or a driving position) of the zoom lens optical system (optical adjusting means) 9 in proportion to the operation amount of the zoom switch 1. Is.

Reference numeral 3 denotes a zoom speed variable volume for changing the level of the command signal with respect to the operation amount of the zoom switch 1. Reference numeral 4 denotes a command signal calculation unit that changes the signal level and shift-converts the signal in order to take the command signal into the A / D converter 5. The A / D converter 5 converts the analog signal output from the command signal calculator 4 into a digital signal. A CPU 6 controls the preset drive control operation and other lens device operations.

Reference numeral 7 is a preset switch (preset drive start operation means) which is operated to instruct the start and end of the preset drive control operation, and 8 is a memory switch (storage instruction operation means) which is instructed to store the preset direction and preset speed. ).

Reference numeral 9 is a zoom lens optical system for adjusting the magnification of the lens device, and 10 is a D / which converts a command signal output from the CPU 6 for driving the zoom lens optical system 9 from a digital signal to an analog signal. A converter.

Reference numeral 11 is a C for changing the signal level of the command signal output from the D / A converter 10 and for shifting the signal.
A PU command signal calculation unit 12 is a power amplification unit that drives a motor 13 that is a drive source of the zoom lens optical system 9.

Reference numeral 14 is a speed detector which outputs a speed signal corresponding to the driving speed of the zoom lens optical system 9, and 15 is a signal level and shift conversion for taking the output speed signal into the A / D converter 16. Is a speed signal calculation unit for performing.
The A / D converter 16 converts the analog signal output from the speed signal calculator 15 into a digital signal.

Reference numeral 17 is a position detector which outputs a position signal corresponding to the position of the zoom lens optical system 9, and 18 is a signal level change for taking the position signal into an A / D converter 19.
It is a position signal calculation unit that performs shift conversion of signals. A
The / D converter 19 converts the analog signal output from the position signal calculator 18 into a digital signal. Reference numeral 20 denotes a storage unit (storage means) represented by an EEPROM that stores preset values.

Further, in FIG. 2, reference numeral 100 is a lens device main body in which the zoom lens optical system 9 and optical adjusting means such as a diaphragm device (not shown) are housed, and 200 is the zoom switch 1, the preset switch 7, and the memory switch. 8 and a control circuit including the CPU 6 and the motor 13, and is a drive unit mounted (or connected) to the lens apparatus body 100. The output of the motor 13 is transmitted to the zoom lens optical system 9 of the lens apparatus body 100 via a reduction gear (not shown) or the like. The lens device body 100 is attached to a camera (not shown) to form a camera system.

In the above structure, first the zoom switch 1
The control when the zoom lens optical system 9 is driven will be described below.

When a zoom switch command signal for instructing the drive direction and drive speed of the zoom lens optical system 9 is output in proportion to the operation amount of the zoom switch 1, this zoom switch command signal is generated. , The zoom speed variable volume 3, the command signal calculator 4 and the A / D converter 5 are input to the CPU 6.

The CPU 6 obtains a CPU command signal according to the zoom switch command signal, and the D / A converter 10 and C
Input to the power amplification unit 12 via the PU command signal calculation unit 11. The power amplification unit 12 drives the motor 13 based on the input CPU command signal to drive the zoom lens optical system 9.

The processing of the CPU 6 at this time will be described with reference to FIG. First, the CPU 6 acquires the zoom switch command signal as A from the A / D converter 5 (step 10).
1). Here, the polarity of the zoom switch command signal A, that is, the driving direction of the zoom lens optical system 9 is represented by positive and negative, and the driving in the telephoto direction is positive and the driving in the wide-angle direction is negative.

The driving speed is represented by a value. In particular,
When instructing to stop the zoom lens optical system 9, it is represented by 0. Then, the driving speed of the zoom lens optical system 9 increases as the value increases from 1, and the case where the lens device instructs the driving at the maximum speed at which the zoom lens optical system 9 can be driven is represented by 100.

Next, the multiplication of the zoom switch command signal A obtained in step 1 and the constant K1 is obtained, and this is used as the CPU command signal (step 102). Then, the CPU command signal is output to the D / A converter 10 (step 10).
3). As a result, the zoom lens optical system 9 is driven in a drive direction proportional to the operation amount of the zoom switch 1 and corresponding to the operation direction.

Next, the setting of preset values (preset speed information and preset direction information) indicating the preset speed and direction when using the preset drive control function and the preset drive control operation will be described in order.

First, the setting of preset values representing the preset speed and direction will be described. Zoom lens optical system 9
The speed signal from the speed detector 14 corresponding to the driving speed of is input to the CPU 6 via the speed signal calculation unit 15 and the A / D converter 16. Further, when the zoom switch 1 is operated, a zoom switch command signal proportional to the operation amount is input to the CPU 6, so it is possible to determine whether or not the zoom switch 1 is operated.

The preset speed is set by the photographer operating the zoom switch 1 and turning the memory switch 8 from OFF to ON while driving the zoom lens optical system 9 at the speed and direction desired to be preset. That is, the speed signal (zoom lens optical system 9) from the speed detector 14 at the time when the memory switch 8 is turned on.
Signal corresponding to the driving speed and the driving direction of the CPU 6
Is stored in the storage unit 20 as a preset value B.

The processing of the CPU 6 at this time will be described with reference to FIG. First, as an initial setting, it is determined whether or not the preset value B is stored in the storage unit 20 (step 20
1) If the preset value B is not stored, that is, if the preset value has never been set, a predetermined zoom drive speed such as the maximum speed and a predetermined zoom drive direction such as a telephoto direction and a wide-angle direction. The preset value B representing "and" is stored in the storage unit 20 (step 202).

The preset value B at the initial setting may be the zoom drive speed desired by the photographer as the zoom drive speed, or may be the zoom drive direction desired by the photographer as the zoom drive direction. Also, here, the preset value B
Is represented by a numerical value having a polarity, and the polarity is the driving direction, that is, the driving in the telephoto direction is positive and the driving in the wide-angle direction is negative. In addition, the value is the drive speed. When the stop of zoom drive is set as a preset value, the zoom drive speed increases as the value increases from 0 and 1, and the lens device is preset to drive at the maximum speed at which zoom drive is possible. 100 for the value
Becomes

After the above processing is completed, the drive speed (hereinafter referred to as zoom speed) and the drive direction (hereinafter referred to as zoom direction) of the zoom lens optical system 9 are acquired from the A / D converter 16 (step 203). After that, the data of the A / D converter 5 is acquired, and it is determined whether or not the zoom switch 1 is operated (step 204). When the zoom switch 1 is not operated, the zoom speed and the zoom direction are acquired again from the A / D converter 16 (step 20).
3).

When the zoom switch 1 is operated, it is determined whether the memory switch 8 has changed from OFF to ON (step 205), and the memory switch 8 is changed from OFF to ON. If it has not changed, the zoom speed and zoom direction are acquired from the A / D converter 16 (step 203). When the state of the memory switch 8 has changed from OFF to ON, the zoom speed and the zoom direction acquired in step 203 are stored in the storage unit 20 as a new preset value B (step 206).

Next, the preset drive control operation will be described. In the preset drive control operation, basically, when the preset switch 7 is turned on for the first time, the CPU command signal (CPU command signal corresponding to the preset value B) output from the CPU 6 is transferred to the D / A converter 10 and the CPU. It is started by being input to the power amplification unit 12 via the command signal calculation unit 11. After the preset drive control operation is started, driving of the zoom lens optical system 9 at a preset speed and direction stored in advance reaches or reaches the movable range end of the zoom lens optical system 9 in this lens device. Is repeated until is turned on again.

In the present embodiment, the zoom switch 1 is operated during the preset drive control operation so that the command signal generator 2 causes the zoom speed variable volume 3, the command signal calculator 4 and the A / D converter 5 to operate. When a zoom switch command signal (value of 1 to 100) is input to the CPU 6 via the, the D /
The CPU command signal output to the A converter 10 is increased or decreased.

The processing of the CPU 6 at this time will be described with reference to FIG. First, it is determined whether or not the preset drive control operation is being performed (step 301), and when the preset drive control operation is not being performed, the process proceeds to step 315.

In step 315, it is determined whether or not the preset switch 7 has changed from OFF to ON.
If the preset switch 7 has not changed from OFF to ON, the process returns to step 301. On the other hand, when the preset switch 7 is changing from OFF to ON, it is judged whether or not the preset drive control operation is being performed (step 316), and when the preset drive control operation is not being performed, The preset drive control operation is started (step 317).

In this preset drive control operation,
First, the preset value B stored in advance in the storage unit 20 is acquired as B '(step 318), and the zoom lens optical system 9 is driven at the zoom speed and direction corresponding to the preset value B'. Further, the preset value B is also acquired as a preset value B'old described later.

After the preset drive control operation is started in this way, if it is determined in step 301 that the preset drive control operation is in progress, the zoom switch command signal A is obtained from the A / D converter 5 (step 302). Based on the value of the zoom switch command signal A (value of 0 to 100), it is determined whether or not the zoom switch 1 is operated (step 303).

When the zoom switch 1 is operated (when the zoom switch command signal A is 1 to 100), the process proceeds to a preset speed changing subroutine (step 304), and then the process proceeds to step 305.
On the other hand, when the zoom switch 1 is not operated,
The process proceeds to step 305 as it is.

Here, the preset speed change subroutine will be described with reference to FIG. First, by operating the zoom switch 1 during the preset drive control operation, a new preset value B ′ is calculated using the formula (1) according to the value and polarity of the zoom switch command signal A input to the CPU 6. (Step 401).

B ′ = B′old + (B′old × A) × K2 (1) Note that K2 is a constant. B'old is the preset value acquired at step 318 at the start of the preset drive control operation or the preset value set at the previous execution of this subroutine. That is, the preset value B ′ calculated by the equation (1) is a value obtained by changing the preset value B set by the normal preset value setting operation to the acceleration side or the deceleration side, or the preset value already changed by this subroutine. It becomes the value that B'is changed again to the speed increasing side or the speed reducing side.

Next, the preset value B'calculated in step 401 is multiplied by the preset value B'old before change, and it is determined whether or not the multiplied value is 0 or less (step 402).

If it is 0 or less, it is prevented that the driving direction of the zoom lens optical system 9 is reversed as a result of the calculated preset value B ′ being changed to the deceleration side with respect to the pre-change preset value B′old. In order to set the preset value B'to 0
Set (Stop driving the zoom lens optical system 9) to CP
It is held in U6 (step 404). On the other hand, when the multiplication value is not 0 or less, the calculated preset value B ′ is set as the changed preset value B ′ and held in the CPU 6, and is also held in the CPU 6 as the preset value B′old (step 403). ).

With the above preset value changing subroutine, when the zoom switch 1 is operated in the telephoto direction during the preset drive control operation, the preset value can be changed to the speed increasing side by an amount proportional to the operation amount. . Also,
When the zoom switch 1 is operated in the wide-angle direction, the preset value can be changed to the deceleration side by an amount proportional to the operation amount.

As can be seen from the above equation (1), the amount of change of the preset value is the product of the operation amount of the zoom switch 1 and the preset value (B'old = B ') at that time. The amount of change of the preset value with respect to the same operation amount of the zoom switch 1 becomes larger as the preset value B'old before change becomes higher.

When the preset value change subroutine is completed, the routine proceeds to step 305 in FIG. 5, where the current zoom speed and zoom direction are acquired from the A / D converter 16. Furthermore, in step 306, the current position of the zoom lens optical system 9 (hereinafter referred to as the zoom position) is acquired from the A / D converter 19.

Next, it is judged whether or not the zoom position acquired in step 306 is at the movable range end of the lens device (step 307). If the zoom position is at the movable range end of the lens device, preset drive control is performed. The operation ends (step 312).

When the zoom position is not at the movable range end of the lens device, it is determined whether or not the zoom speed acquired in step 305 corresponds to the preset value B ′ set in step 304 ( Step 30
8).

If the zoom speed is not the speed corresponding to the preset value B ', it is judged whether the speed corresponding to the preset value B'is faster than the zoom speed (step 309), and the speed is slow. In this case, the value of the CPU command signal output to the D / A converter 10 is increased to increase the zoom speed to the speed corresponding to the preset value B '(step 311). On the other hand, when the zoom speed is faster than the speed corresponding to the preset value B ′, the value of the CPU command signal output to the D / A converter 10 is decreased to bring the zoom speed to the speed corresponding to the preset value B ′. The speed is reduced (step 310).

After that, it is judged whether or not the zoom direction acquired in step 305 is equal to the preset direction represented by the preset value B '(step 313). If the directions are not equal, the current zoom direction is determined. The zoom lens optical system 9 is driven in the opposite direction (step 314), and the process proceeds to step 315. If the directions are the same, the process directly proceeds to step 315.

Then, in step 315, it is determined whether or not the preset switch 7 has changed state from OFF to ON. If the preset switch 7 has not changed state from OFF to ON, steps 301 to 314 are executed.
Repeat again. At this time, when the zoom switch 1 is operated again, the preset value B ′ is changed by the product of the operation amount and the preset value (B′old = B ′) at that time, and the zoom speed is changed. It On the other hand, when it is determined that the preset switch 7 has changed from OFF to ON and the preset drive control operation is being performed (step 316), the preset drive control operation is ended (step 320).

As described above, according to this embodiment, the preset value (speed) is set according to the operation of the zoom switch 1 during the preset drive control operation of the zoom lens optical system 9.
Therefore, a lens device capable of increasing or decreasing the zoom speed in the preset drive control operation can be realized.

In this embodiment, when the zoom switch 1 is operated in the telephoto direction regardless of the driving direction of the zoom lens optical system 9 during the preset drive control operation, the zoom drive speed is increased and the zoom switch 1 is moved. The case where the zoom drive speed is decelerated when operated in the wide-angle direction has been described, but the relationship between the operation direction of the zoom switch and the acceleration / deceleration may be reversed. That is, when the zoom switch 1 is operated in the wide-angle direction, the zoom drive speed is increased in proportion to the operation amount, and when the zoom switch 1 is operated in the telephoto direction, the zoom drive speed is reduced in proportion to the operation amount. You may do it. In this case, the equation (1) of step 401 in FIG. 6 may be set as B ′ = B′old + (B′old × (−A)) × K2.

Further, in the present embodiment, the zoom switch 1
The CPU command signal for driving the zoom lens optical system 9 is obtained by multiplying the zoom switch command signal by the constant K1. However, the zoom switch command signal itself is used as the CPU command signal or based on the zoom switch command signal. Alternatively, the CPU command signal may be obtained from the table data.

Further, the CPU command signal for increasing / decreasing the zoom drive speed by operating the zoom switch 1 during the preset drive control operation may be obtained from the table data based on the preset value and the zoom switch command signal. .

(Second Embodiment) In the first embodiment,
The preset value is stored in the storage unit 20 by the photographer turning off the memory switch 8 before starting the preset drive control.
The preset value is changed only when set to N, and the changed preset value is erased at the end of the preset drive control (only the original preset value is stored and held in the storage unit 20). Zoom switch 1 inside
The preset value changed according to the operation may be stored and held in the storage unit 20.

Hereinafter, the changed preset value is stored in the storage unit 20.
An embodiment of storing and holding will be described. The basic configuration of the lens device, the preset value is stored and set according to the operation of the memory switch 8, and the zoom drive speed is increased or decreased according to the preset value changed according to the operation of the zoom switch 1 during the preset drive control operation. The point (main routine shown in the figure) is the same as in the first embodiment.
This embodiment differs from the first embodiment only in the preset value change subroutine.

In the preset value changing subroutine of the present embodiment shown in FIG. 7, first, the zoom switch 1 is operated during the preset drive control operation, and the value and polarity of the zoom switch command signal A input to the CPU 6 are changed. Then, a new preset value B'is calculated using the equation (2) (step 501).

B ′ = B′old + (B′old × A) × K2 (2) The expression (2) is the same as the expression (1) in the first embodiment.

Next, the preset value B'calculated in step 501 is multiplied by the preset value B'old before change, and it is determined whether or not the multiplied value is 0 or less (step 502).

When it is 0 or less, the driving direction of the zoom lens optical system 9 is prevented from being reversed as a result of the calculated preset value B ′ being changed to the deceleration side with respect to the pre-change preset value B′old. In order to set the preset value B'to 0
Set (Stop driving the zoom lens optical system 9) to CP
It is held in U6 (step 504). On the other hand, when the multiplication value is not 0 or less, the calculated preset value B ′ is set as the changed preset value B ′ and held in the CPU 6, and is also held in the CPU 6 as the preset value B′old (step 503). ).

Then, the changed preset value B'is stored in the storage unit 20 as the preset value B (step 50).
5).

According to this embodiment, as in the first embodiment, when the zoom switch 1 is operated in the telephoto direction during the preset drive control operation, the zoom drive speed is increased by an amount proportional to the operation amount. You can change to the fast side. Further, when the zoom switch 1 is operated in the wide-angle direction, the zoom drive speed can be reduced by an amount proportional to the operation amount.

Further, the change amount of the preset value with respect to the same operation amount of the zoom switch 1 also becomes larger as the preset value B'old is on the higher speed side, as in the first embodiment.

Further, according to this embodiment, the preset value is stored and held in the storage unit 25 every time it is changed during the preset drive control operation, and the last changed preset value is stored and held in the storage unit 20. Therefore, it can be used as a preset value when starting the next preset drive control operation after the current preset drive control operation is completed. If a memory such as an EEPROM that retains stored contents even when the power is turned off is used as the storage unit 20, it can be used as a preset value at the start of the preset drive control operation after the power is turned on again.

In the present embodiment, when the zoom switch 1 is operated in the telephoto direction regardless of the driving direction of the zoom lens optical system 9 during the preset drive control operation, the zoom drive speed is increased and the zoom switch 1 is moved. The case where the zoom drive speed is decelerated when operated in the wide-angle direction has been described, but the relationship between the operation direction of the zoom switch and the acceleration / deceleration may be reversed. That is, when the zoom switch 1 is operated in the wide-angle direction, the zoom drive speed is increased in proportion to the operation amount, and when the zoom switch 1 is operated in the telephoto direction, the zoom drive speed is reduced in proportion to the operation amount. You may do it. In this case, the equation (2) of step 501 in FIG. 7 may be set to B ′ = B′old + (B′old × (−A)) × K2.

(Third Embodiment) In the first embodiment, when the zoom switch 1 is operated in one of the telephoto direction and the wide-angle direction regardless of the zoom drive direction (preset direction) during the preset drive control operation. When the zoom drive speed is increased in proportion to the operation amount, and the zoom drive speed is decreased in proportion to the operation amount when the zoom switch 1 is operated in the predetermined other one of the telephoto direction and the wide-angle direction. However, the relationship between the operation direction of the zoom switch 1 and the acceleration / deceleration may be changed according to the zoom drive direction during the preset drive control operation.

An embodiment in which the relationship between the operation direction of the zoom switch 1 and the acceleration / deceleration is changed according to the zoom drive direction during the preset drive control operation will be described below. The basic configuration of the lens device, the preset value is stored and set according to the operation of the memory switch 8, and the zoom drive speed is increased or decreased according to the preset value changed according to the operation of the zoom switch 1 during the preset drive control operation. Points (Fig. 5)
The main routine) is the same as in the first embodiment. This embodiment differs from the first embodiment only in the preset value change subroutine.

In the preset value changing subroutine of this embodiment shown in FIG. 8, first, it is determined whether or not the preset value B ′ is 0 or less, that is, whether the zoom drive direction (preset direction) is the telephoto direction or the wide-angle direction. (Step 60
1) If not less than 0 (in the telephoto direction), depending on the value and polarity of the zoom switch command signal A input to the CPU 6 by operating the zoom switch 1 during the preset drive control operation. Then, a new preset value B ′ is calculated using the equation (3) (step 60).
2).

B ′ = B′old + (B′old × A) × K2 (3) K2 is a constant. B'old is the preset value acquired at step 318 of FIG. 5 at the start of the preset drive control operation or the preset value set at the previous execution of this subroutine. That is, the preset value B ′ calculated by the equation (3) is a value obtained by changing the preset value B set by the normal preset value setting operation to the acceleration side or the deceleration side, or the preset value already changed by this subroutine. It becomes the value that B'is changed again to the speed increasing side or the speed reducing side.

When the zoom switch 1 is operated in the telephoto direction (that is, the operating direction corresponding to the zoom driving direction), the polarity of the zoom switch command signal A is positive, so the preset value B'is B '. It is changed to the acceleration side with respect to old. Further, when the zoom switch 1 is operated in the wide-angle direction (that is, the operation direction opposite to the operation direction corresponding to the zoom drive direction), the polarity of the zoom switch command signal A is negative, and therefore the preset value B ′ is It is changed to the deceleration side with respect to B'old.

On the other hand, if the preset value B ′ is 0 or less in step 601 (in the wide-angle direction), the zoom switch 1 input to the CPU 6 by operating the zoom switch 1 during the preset drive control operation. A new preset value B ′ is calculated according to the value and polarity of the command signal A using the equation (4) (step 60).
3).

[0078] B ′ = B′old− (B′old × A) × K2 (3) Note that K2 is a constant.

When the zoom switch 1 is operated in the wide-angle direction (that is, the operating direction corresponding to the zoom driving direction), the polarity of the zoom switch command signal A is negative, so the preset value B'is B '. It is changed to the acceleration side with respect to old. Further, when the zoom switch 1 is operated in the telephoto direction (that is, the operation direction opposite to the operation direction corresponding to the zoom drive direction), the polarity of the zoom switch command signal A is positive, and therefore the preset value B ′ is It is changed to the deceleration side with respect to B'old.

Next, the preset value B'calculated in steps 602 and 603 is multiplied by the preset value B'old before change, and it is determined whether or not the multiplied value is 0 or less (step 604). ).

When the value is 0 or less, the driving direction of the zoom lens optical system 9 is prevented from being reversed as a result of the calculated preset value B ′ being changed to the deceleration side with respect to the pre-change preset value B′old. In order to set the preset value B'to 0
Set (Stop driving the zoom lens optical system 9) to CP
It is held in U6 (step 606). On the other hand, when the multiplication value is not 0 or less, the calculated preset value B ′ is set as the changed preset value B ′ and held in the CPU 6 and is also held in the CPU 6 as the preset value B′old (step 605). ).

According to this embodiment, when the zoom switch 1 in the preset drive control operation is the telephoto direction and the zoom switch 1 is operated in the telephoto direction, the zoom drive speed is increased by an amount proportional to the operation amount. Can speed up. Further, when the zoom switch 1 is operated in the wide-angle direction, the zoom drive speed can be reduced by an amount proportional to the operation amount.

When the zoom drive direction in the preset drive control operation is the wide angle direction, the zoom switch 1
When is operated in the wide-angle direction, the zoom drive speed can be increased by an amount proportional to the operation amount. Further, when the zoom switch 1 is operated in the telephoto direction, the zoom drive speed can be reduced by an amount proportional to the operation amount.

The amount of change of the preset value with respect to the same operation amount of the zoom switch 1 is the same as in the first embodiment.
The preset value B'old increases as the speed increases.

In this embodiment, when the zoom switch 1 is operated in the operation direction corresponding to the zoom drive direction during the preset drive control operation, the zoom drive speed is increased and the zoom switch 1 is operated in the opposite direction. Although the case where the zoom drive speed is decelerated has been described above, the relationship between the operation direction of the zoom switch and the acceleration / deceleration may be reversed. That is, when the zoom switch 1 is operated in the direction opposite to the direction corresponding to the zoom drive direction, the zoom drive speed is increased in proportion to the operation amount.
When is operated in a direction corresponding to the zoom drive direction, the zoom drive speed may be reduced in proportion to the operation amount. In this case, the equation (3) of step 602 in FIG. 8 is set to B ′ = B′old + (B′old × (−A)) × K2, and the equation (4) of step 603 is changed to B ′ = B′old. It may be set to − (B′old × (−A)) × K2.

(Fourth Embodiment) In the third embodiment,
The preset value is stored in the storage unit 20 by the photographer turning off the memory switch 8 before starting the preset drive control.
The preset value is changed only when set to N, and the changed preset value is erased at the end of the preset drive control (only the original preset value is stored and held in the storage unit 20). Zoom switch 1 inside
The preset value changed according to the operation may be stored and held in the storage unit 20.

Hereinafter, the changed preset value is stored in the storage unit 20.
An embodiment of storing and holding will be described. The basic configuration of the lens device, the preset value is stored and set according to the operation of the memory switch 8, and the zoom drive speed is increased or decreased according to the preset value changed according to the operation of the zoom switch 1 during the preset drive control operation. The point (main routine in FIG. 5) to be performed is the same as in the third (and first) embodiment. This embodiment differs from the third embodiment only in the preset value change subroutine.

For the operation from the zoom switch 1 and the setting of the preset value using the memory switch 8, refer to the first
The description is omitted because it is the same as the embodiment described above. Further, since the preset operation is the same except for the preset value setting, only the preset value setting will be described below.

In the preset value change subroutine of this embodiment shown in FIG. 9, first, it is determined whether or not the preset value B'is 0 or less, that is, whether the zoom drive direction is the telephoto direction or the wide angle direction (step 701). , 0 or less (in the telephoto direction), by operating the zoom switch 1 during the preset drive control operation, C
A new preset value B ′ is calculated using the equation (3) according to the value and polarity of the zoom switch command signal A input to the PU 6 (step 702).

B ′ = B′old + (B′old × A) × K2 (5) The expression (5) is the same as the expression (3) of the third embodiment.

On the other hand, when the preset value B ′ is 0 or less in step 701 (in the wide-angle direction), the zoom switch 1 input to the CPU 6 by operating the zoom switch 1 during the preset drive control operation. A new preset value B ′ is calculated using equation (6) according to the value and polarity of the command signal A (step 70).
3).

B ′ = B′old− (B′old × A) × K2 (3) The expression (6) is the same as the expression (4) of the third embodiment.

Next, the preset value B'calculated in steps 702 and 703 is multiplied by the preset value B'old before change, and it is determined whether or not the multiplied value is 0 or less (step 704). ).

When it is 0 or less, the driving direction of the zoom lens optical system 9 is prevented from being reversed as a result of the calculated preset value B ′ being changed to the deceleration side with respect to the pre-change preset value B′old. In order to set the preset value B'to 0
Set (Stop driving the zoom lens optical system 9) to CP
It is held in U6 (step 706). On the other hand, when the multiplication value is not 0 or less, the calculated preset value B ′ is set as the changed preset value B ′ and held in the CPU 6, and is also held in the CPU 6 as the preset value B′old (step 705). ).

Then, the preset value B ′ held in the CPU 6 is stored in the storage unit 20 as the preset value B (step 707).

According to this embodiment, as in the third embodiment, when the zoom drive direction in the preset drive control operation is the telephoto direction, when the zoom switch 1 is operated in the telephoto direction, the operation amount is changed. The zoom drive speed can be increased by a proportional amount. Also, the zoom switch 1
When is operated in the wide-angle direction, the zoom drive speed can be reduced by an amount proportional to the operation amount.

When the zoom drive direction in the preset drive control operation is the wide angle direction, the zoom switch 1
When is operated in the wide-angle direction, the zoom drive speed can be increased by an amount proportional to the operation amount. Further, when the zoom switch 1 is operated in the telephoto direction, the zoom drive speed can be reduced by an amount proportional to the operation amount.

The change amount of the preset value with respect to the same operation amount of the zoom switch 1 is the same as in the third embodiment.
The preset value B'old increases as the speed increases.

Further, according to the present embodiment, the preset value is stored and held in the storage unit 25 every time it is changed during the preset drive control operation, and the last changed preset value is stored and held in the storage unit 20. Therefore, it can be used as a preset value when starting the next preset drive control operation after the end of this preset drive control operation. If a memory such as an EEPROM that retains stored contents even when the power is turned off is used as the storage unit 20, it can be used as a preset value at the start of the preset drive control operation after the power is turned on again.

Further, in this embodiment, when the zoom switch 1 is operated in the operation direction corresponding to the zoom drive direction during the preset drive control operation, the zoom drive speed is increased and the zoom switch 1 is operated in the opposite direction. Although the case where the zoom drive speed is decelerated has been described above, the relationship between the operation direction of the zoom switch and the acceleration / deceleration may be reversed. That is, when the zoom switch 1 is operated in the direction opposite to the direction corresponding to the zoom drive direction, the zoom drive speed is increased in proportion to the operation amount.
When is operated in a direction corresponding to the zoom drive direction, the zoom drive speed may be reduced in proportion to the operation amount. In this case, the equation (5) of step 702 in FIG. 9 is set to B ′ = B′old + (B′old × (−A)) × K2, and the equation (6) of step 703 is changed to B ′ = B′old. It may be set to − (B′old × (−A)) × K2.

(Fifth Embodiment) In the first to fourth embodiments, the preset value is changed in proportion to the operation amount of the zoom switch 1 during the preset drive control operation (the zoom drive speed is increased or decreased). ), The zoom switch 1 is treated as an on / off switch during the preset drive control operation, and a certain amount is added to the preset value according to the number of times the zoom switch 1 is operated, that is, the number of times the zoom switch 1 is operated in the telephoto direction. Alternatively, the preset amount may be subtracted according to the number of times of operation in the wide-angle direction.

An embodiment in which the zoom drive speed is accelerated or decelerated according to the number of times the zoom switch 1 is operated will be described below. In addition, the basic configuration of the lens device, the preset value is stored and set according to the operation of the memory switch 8,
During the preset drive control operation, the zoom drive speed is increased or decreased by the preset value changed according to the operation of the zoom switch 1 (step 3 in the main routine of FIG. 5).
Parts other than 03 and 304) are the same as those in each of the above embodiments. In this embodiment, steps 303 and 304 in the main routine are replaced with the steps shown in FIG.

First, when the operation proceeds from step 302 in FIG. 5 to step 801, it is determined whether or not the zoom switch 1 is operated. When the zoom switch 1 is not operated, the TELE switch flag is cleared (step 812), the WIDE switch flag is cleared (step 813), and the process proceeds to step 305 in FIG.

On the other hand, in step 801, the zoom switch 1
When it is determined that the zoom switch 1 has been operated, it is determined whether the zoom switch 1 has been operated in the telephoto direction (step 8).
02), when the zoom switch 1 is operated in the telephoto direction, it is determined whether the TELE switch flag is set (step 803). If the TELE switch flag is set, the process proceeds to step 809. If the TELE switch flag is not set, the zoom switch 1 is operated once in the telephoto direction during the preset drive control operation. A new preset value B'is calculated using equation (7) (step 80).
4).

B ′ = B′old + (B′old × K2) (7) K2 is a constant. After that, the TELE switch flag is set (step 805).

In step 804, when the zoom switch 1 is operated once in the telephoto direction, the preset value B'is set to B'old regardless of the operation amount (value of the zoom switch command signal A) at that time. It is changed to speed-up side.

In step 802, the zoom switch 1
If it is determined that is not operated in the telephoto direction, W
It is determined whether the IDE switch flag is set (step 806). If the WIDE switch flag is set, the process proceeds to step 809 and the WID
When the E switch flag is not set, a new preset value B ′ corresponding to the zoom switch 1 being operated once in the wide-angle direction during the preset drive control operation is calculated using the equation (7). (Step 807).

B ′ = B′old− (B′old × K2) (8) K2 is a constant. After that, the WIDE switch flag is set (step 808).

In step 807, when the zoom switch 1 is operated once in the wide-angle direction, the preset value B'is set to B'old regardless of the operation amount (the value of the zoom switch command signal A) at that time. Is changed to the deceleration side.

B'old is the preset value acquired in step 318 of FIG. 5 at the start of the preset drive control operation or the preset value changed in the previous routine. That is, the preset value B ′ calculated by the equations (7) and (8) is a value obtained by changing the preset value B set by the normal preset value setting operation to the speed-up side or the deceleration side, or the preset value already changed. The value B'becomes a value obtained by changing the value to the speed increasing side or the speed reducing side again.

Next, the preset value B'calculated in steps 804 and 807 is multiplied by the preset value B'old before change, and it is determined whether or not the multiplied value is 0 or less (step 809). ).

When it is 0 or less, the driving direction of the zoom lens optical system 9 is prevented from being reversed as a result of the calculated preset value B ′ being changed to the deceleration side with respect to the pre-change preset value B′old. In order to set the preset value B'to 0
Set (Stop driving the zoom lens optical system 9) to CP
It is held in U6 (step 811). On the other hand, when the multiplication value is not 0 or less, the calculated preset value B ′ is set as the changed preset value B ′ and held in the CPU 6, and is also held in the CPU 6 as the preset value B′old (step 810). ). And step 81
From 0, 811, the process proceeds to step 305 in FIG.

According to the present embodiment, when the zoom switch 1 is operated once in the telephoto direction during the preset drive control operation, the zoom drive speed at that time (preset value B'ol
The zoom drive speed can be increased by an amount proportional to d). Further, when the zoom switch 1 is operated once in the wide-angle direction, the zoom drive speed can be reduced by an amount proportional to the zoom drive speed (preset value B'old) at that time.

Then, during the preset drive control operation, the main routine including steps 801 to 811 is repeatedly executed, and if the zoom switch 1 is operated a plurality of times in the telephoto direction during this time, the zoom drive speed is gradually increased for each operation. When the zoom switch 1 is operated in the wide-angle direction a plurality of times, the zoom drive speed is gradually reduced to a small speed for each operation.

In the present embodiment, the zoom drive speed is increased when the zoom switch 1 is operated in the telephoto direction regardless of the drive direction of the zoom lens optical system 9 during the preset drive control operation, and the zoom switch 1 is turned on. The case where the zoom drive speed is decelerated when operated in the wide-angle direction has been described, but the relationship between the operation direction of the zoom switch and the acceleration / deceleration may be reversed. That is, when the zoom switch 1 is operated in the wide-angle direction, the zoom drive speed is increased,
The zoom driving speed may be reduced when the zoom switch 1 is operated in the telephoto direction. In this case,
The equation (7) of step 804 at 0 is set to B ′ = B′old− (B′old × K2), and the equation (8) of step 807 is changed to B ′ = B′old + (B′old × K2). do it.

(Sixth Embodiment) In the fifth embodiment,
The preset value is stored in the storage unit 20 by the photographer turning off the memory switch 8 before starting the preset drive control.
The preset value is changed only when set to N, and the changed preset value is erased at the end of the preset drive control (only the original preset value is stored and held in the storage unit 20). Zoom switch 1 inside
The preset value changed according to the operation may be stored and held in the storage unit 20.

An embodiment in which the changed preset value is stored and held will be described below. The basic configuration of the lens device, the preset value is stored and set according to the operation of the memory switch 8, and the zoom drive speed is increased or decreased according to the preset value changed according to the operation of the zoom switch 1 during the preset drive control operation. The points (portions other than steps 303 and 304 in the main routine of FIG. 5) that are performed are the same as in the above-described embodiments. In this embodiment, steps 303 and 304 in the main routine are executed as shown in FIG.
It is replaced with each step shown in.

First, when the operation proceeds from step 302 to step 851 in FIG. 5, it is determined whether or not the zoom switch 1 has been operated. When the zoom switch 1 is not operated, the TELE switch flag is cleared (step 852), the WIDE switch flag is cleared (step 853), and the process proceeds to step 305 in FIG.

On the other hand, in step 851, the zoom switch 1
When it is determined that the zoom switch 1 has been operated, it is determined whether the zoom switch 1 has been operated in the telephoto direction (step 8).
52) If the zoom switch 1 is operated in the telephoto direction, it is determined whether the TELE switch flag is set (step 853). If the TELE switch flag is set, the process proceeds to step 859, and if the TELE switch flag is not set, the zoom switch 1 is operated once in the telephoto direction during the preset drive control operation. A new preset value B'is calculated using equation (9) (step 85).
4).

B ′ = B′old + (B′old × K2) (9) The expression (9) is the same as the expression (7) of the fifth embodiment. After that, the TELE switch flag is set (step 855).

In step 854, when the zoom switch 1 is operated once in the telephoto direction, the preset value B'is set to B'old regardless of the operation amount (value of the zoom switch command signal A) at that time. It is changed to speed-up side.

In step 852, the zoom switch 1
If it is determined that is not operated in the telephoto direction, W
It is determined whether the IDE switch flag is set (step 856). If the WIDE switch flag is set, the process proceeds to step 859 and the WID
When the E switch flag is not set, a new preset value B ′ corresponding to the zoom switch 1 being operated once in the wide-angle direction during the preset drive control operation is calculated using the equation (10). (Step 857).

B ′ = B′old− (B′old × K2) (10) The expression (10) is the same as the expression (8) of the fifth embodiment. After that, the WIDE switch flag is set (step 858).

In step 857, when the zoom switch 1 is operated once in the wide-angle direction, the preset value B ′ is compared with B′old regardless of the operation amount (value of the zoom switch command signal A) at that time. Is changed to the deceleration side.

Next, the preset value B'calculated in steps 854 and 857 is multiplied by the preset value B'old before change, and it is determined whether or not the multiplied value is 0 or less (step 859). ).

When it is 0 or less, the driving direction of the zoom lens optical system 9 is prevented from being reversed as a result of the calculated preset value B ′ being changed to the deceleration side with respect to the pre-change preset value B′old. In order to set the preset value B'to 0
Set (Stop driving the zoom lens optical system 9) to CP
It is held in U6 (step 861). On the other hand, when the multiplication value is not 0 or less, the calculated preset value B ′ is set as the changed preset value B ′ and held in the CPU 6, and is also held in the CPU 6 as the preset value B′old (step 860). ).

Next, the preset value B ′ held in the CPU 6 is stored in the storage section 20 as the preset value B (step 862). Then, the process proceeds from step 862 to step 305 in FIG.

According to this embodiment, as in the fifth embodiment, the zoom switch 1 is set to 1 during the preset drive control operation.
When operated in the telephoto direction, the zoom drive speed can be increased by an amount proportional to the zoom drive speed (preset value B'old) at that time. Also, the zoom switch 1
When is operated once in the wide-angle direction, the zoom drive speed can be reduced by an amount proportional to the zoom drive speed (preset value B'old) at that time.

Then, the main routine including steps 851 to 861 is repeatedly executed during the preset drive control operation, and if the zoom switch 1 is operated a plurality of times in the telephoto direction during this time, the zoom drive speed is gradually increased for each operation. When the zoom switch 1 is operated in the wide-angle direction a plurality of times, the zoom drive speed is gradually reduced to a small speed for each operation.

Moreover, according to the present embodiment, the preset value is stored and held in the storage unit 25 every time it is changed during the preset drive control operation, and the last changed preset value is stored and held in the storage unit 20. Therefore, it can be used as a preset value when starting the next preset drive control operation after the end of this preset drive control operation. If a memory such as an EEPROM that retains stored contents even when the power is turned off is used as the storage unit 20, it can be used as a preset value at the start of the preset drive control operation after the power is turned on again.

In this embodiment, when the zoom switch 1 is operated in the telephoto direction regardless of the driving direction of the zoom lens optical system 9 during the preset drive control operation, the zoom drive speed is increased and the zoom switch 1 is turned on. The case where the zoom drive speed is decelerated when operated in the wide-angle direction has been described, but the relationship between the operation direction of the zoom switch and the acceleration / deceleration may be reversed. That is, when the zoom switch 1 is operated in the wide-angle direction, the zoom drive speed is increased,
The zoom driving speed may be reduced when the zoom switch 1 is operated in the telephoto direction. In this case,
The equation (9) of step 854 in 1 is set as B ′ = B′old− (B′old × K2), and the equation (10) of step 857 is set as B ′ = B′old + (B′old × K2). do it.

(Seventh Embodiment) In the fifth and sixth embodiments, the zoom switch 1 is set to a predetermined one of the telephoto direction and the wide-angle direction regardless of the zoom drive direction (preset direction) during the preset drive control operation. The case where the zoom drive speed is increased each time the zoom switch 1 is operated and the zoom drive speed is decreased each time the zoom switch 1 is operated in the predetermined other one of the telephoto direction and the wide-angle direction has been described. The relationship between the operation direction of the zoom switch 1 and the acceleration / deceleration may be changed according to the zoom driving direction during operation.

An embodiment in which the relationship between the operating direction of the zoom switch 1 and the acceleration / deceleration is changed according to the zoom driving direction during the preset drive control operation will be described below. The basic configuration of the lens device, the preset value is stored and set according to the operation of the memory switch 8, and the zoom drive speed is increased or decreased according to the preset value changed according to the operation of the zoom switch 1 during the preset drive control operation. Points (Fig. 5)
(Except for steps 303 and 304 of the main routine), it is the same as in the above embodiments. In the present embodiment, steps 303 and 3 of the main routine described above are used.
04 is replaced with each step shown in FIG.

First, when proceeding from step 302 to step 901 of FIG. 5, it is first judged whether or not the zoom switch 1 is operated, and if the zoom switch 1 is not operated, the switch flag is cleared. (Step 910), the process proceeds to step 305 in FIG.

On the other hand, in step 901, the zoom switch 1
If it is determined that the switch flag is operated, it is determined whether or not the switch flag is set (step 90
2) If the switch flag is set, the process proceeds to step 907. If the switch flag is not set, it is determined whether the operation direction of the zoom switch 1 is equal to the preset direction represented by the preset value B '(step 903).

When the operation direction of the zoom switch 1 is equal to the preset direction (zoom drive direction) represented by the preset value B ′, the zoom switch 1 is operated once in the same direction as the preset direction during the preset drive control operation. A new preset value B'according to this is calculated using the equation (11) (step 904).

B ′ = B′old + (B′old × K2) (11) Note that K2 is a constant. Then, in step 906, the switch flag is set.

In step 904, when the zoom switch 1 is operated once in the same direction as the preset direction, the preset value B'is set to B'regardless of the operation amount (the value of the zoom switch command signal A) at that time. It is changed to the acceleration side with respect to old.

In step 903, the zoom switch 1
If the operation direction of No. and the preset direction (zoom drive direction) represented by the preset value B ′ are not equal, the zoom switch 1 is operated once in the direction opposite to the preset direction during the preset drive control operation. A corresponding new preset value B ′ is calculated using equation (12) (step 905).

B ′ = B′old− (B′old × K2) (12) Note that K2 is a constant. Then, in step 906, the switch flag is set.

In step 905, when the zoom switch 1 is operated once in the direction opposite to the preset direction, the preset value B'is set to B regardless of the operation amount at that time (the value of the zoom switch command signal A). It is changed to the deceleration side with respect to'old.

B'old is the preset value acquired in step 318 of FIG. 5 at the start of the preset drive control operation or the preset value changed in the previous routine. That is, the preset value B ′ calculated by the equations (11) and (12) is a value obtained by changing the preset value B set by the normal preset value setting operation to the speed-up side or the deceleration side, or the preset value already changed. Value B '
Becomes a value that is changed again to speed-up side or deceleration side.

Next, the preset value B'calculated in steps 904 and 905 is multiplied by the preset value B'old before change, and it is determined whether or not the multiplied value is 0 or less (step 907). ).

When it is 0 or less, the driving direction of the zoom lens optical system 9 is prevented from being reversed as a result of the calculated preset value B ′ being changed to the deceleration side with respect to the pre-change preset value B′old. In order to set the preset value B'to 0
Set (Stop driving the zoom lens optical system 9) to CP
It is held in U6 (step 909). On the other hand, if the multiplied value is not 0 or less, the calculated preset value B ′ is set as the changed preset value B ′ and held in the CPU 6, and is also held in the CPU 6 as the preset value B′old (step 908). ). And step 90
From 8,909, the process proceeds to step 305 in FIG.

According to this embodiment, when the zoom switch 1 is operated once in the direction corresponding to the zoom drive direction during the preset drive control operation, the zoom drive speed (preset value B'old) at that time is set. The zoom drive speed can be increased by a proportional amount. When the zoom switch 1 is operated once in the direction opposite to the direction corresponding to the zoom drive direction, the zoom drive speed is reduced by an amount proportional to the zoom drive speed (preset value B'old) at that time. be able to.

Then, during the preset drive control operation, the main routine including steps 901 to 910 is repeatedly executed, and if the zoom switch 1 is operated a plurality of times in the direction corresponding to the zoom drive direction during that time, the main switch is operated once. The zoom drive speed is gradually increased greatly, and when the zoom switch 1 is operated a plurality of times in the direction opposite to the direction corresponding to the zoom drive direction, the zoom drive speed is gradually reduced for each operation. Will be done.

In this embodiment, when the zoom switch 1 is operated in the operation direction corresponding to the zoom drive direction during the preset drive control operation, the zoom drive speed is increased and the zoom switch 1 is operated in the opposite direction. Although the case where the zoom drive speed is decelerated has been described above, the relationship between the operation direction of the zoom switch and the acceleration / deceleration may be reversed. That is, when the zoom switch 1 is operated in the direction opposite to the direction corresponding to the zoom driving direction, the zoom driving speed is increased, and when the zoom switch 1 is operated in the direction corresponding to the zoom driving direction, the zoom driving speed is decelerated. You may do it. In this case, the equation (11) of step 904 in FIG. 12 is set to B ′ = B′old− (B′old ×× K2), and the equation (12) of step 905 is changed to B ′ = B′old− (B 'old x K2) should be used.

(Eighth Embodiment) In the seventh embodiment,
The preset value is stored in the storage unit 20 by the photographer turning off the memory switch 8 before starting the preset drive control.
The preset value is changed only when set to N, and the changed preset value is erased at the end of the preset drive control (only the original preset value is stored and held in the storage unit 20). Zoom switch 1 inside
The preset value changed according to the operation may be stored and held in the storage unit 20.

An embodiment in which the changed preset value is stored and held will be described below. The basic configuration of the lens device, the preset value is stored and set according to the operation of the memory switch 8, and the zoom drive speed is increased or decreased according to the preset value changed according to the operation of the zoom switch 1 during the preset drive control operation. The points (portions other than steps 303 and 304 in the main routine of FIG. 5) that are performed are the same as in the above-described embodiments. In this embodiment, steps 303 and 304 in the main routine are executed as shown in FIG.
It is replaced with each step shown in.

First, when proceeding from step 302 to step 951 in FIG. 5, it is judged whether or not the zoom switch 1 is operated. If the zoom switch 1 is not operated, the switch flag is cleared ( Step 96
0), and proceeds to step 305 in FIG.

On the other hand, in step 951, the zoom switch 1
If it is determined that the switch flag is operated, it is determined whether the switch flag is set (step 95).
2) If the switch flag is set, the process proceeds to step 957. If the switch flag is not set, it is determined whether the operation direction of the zoom switch 1 is equal to the preset direction represented by the preset value B '(step 953).

When the operation direction of the zoom switch 1 is equal to the preset direction (zoom drive direction) represented by the preset value B ′, the zoom switch 1 is operated once in the direction equal to the preset direction during the preset drive control operation. A new preset value B'according to this is calculated using the equation (13) (step 954).

B ′ = B′old + (B′old × K2) (13) The expression (13) is the same as the expression (11) of the seventh embodiment. Then, the process proceeds to step 956 and the switch flag is set.

In step 954, when the zoom switch 1 is operated once in the same direction as the preset direction, the preset value B'is set to B'regardless of the operation amount (value of the zoom switch command signal A) at that time. It is changed to the acceleration side with respect to old.

In step 953, the zoom switch 1
If the operation direction of No. and the preset direction (zoom drive direction) represented by the preset value B ′ are not equal, the zoom switch 1 is operated once in the direction opposite to the preset direction during the preset drive control operation. A corresponding new preset value B'is calculated using the equation (14) (step 955).

B ′ = B′old− (B′old × K2) (14) The expression (14) is the same as the expression (12) of the seventh embodiment. Then, the process proceeds to step 956 and the switch flag is set.

In step 955, when the zoom switch 1 is operated once in the direction opposite to the preset direction, the preset value B'is set to B regardless of the operation amount (value of the zoom switch command signal A) at that time. It is changed to the deceleration side with respect to'old.

B'old is the preset value obtained in step 318 of FIG. 5 at the start of the preset drive control operation or the preset value changed in the previous routine. That is, the preset value B ′ calculated by the equations (11) and (12) is a value obtained by changing the preset value B set by the normal preset value setting operation to the speed-up side or the deceleration side, or the preset value already changed. Value B '
Becomes a value that is changed again to speed-up side or deceleration side.

Next, the preset value B'calculated in steps 954 and 955 is multiplied by the preset value B'old before change, and it is determined whether or not the multiplied value is 0 or less (step 957). ).

When it is 0 or less, the driving direction of the zoom lens optical system 9 is prevented from being reversed as a result of the calculated preset value B ′ being changed to the deceleration side with respect to the pre-change preset value B′old. In order to set the preset value B'to 0
Set (Stop driving the zoom lens optical system 9) to CP
It is held in U6 (step 959). On the other hand, when the multiplication value is not 0 or less, the calculated preset value B ′ is set as the changed preset value B ′ and held in the CPU 6, and is also held in the CPU 6 as the preset value B′old (step 958). ).

Next, the preset value B ′ held in the CPU 6 is stored in the storage section 20 as the preset value B (step 960). Then, the process proceeds from step 960 to step 305 in FIG.

According to the present embodiment, as in the seventh embodiment, when the zoom switch 1 is operated once in the direction corresponding to the zoom drive direction during the preset drive control operation, the zoom drive speed at that time is set. The zoom drive speed can be increased by an amount proportional to the (preset value B'old). When the zoom switch 1 is operated once in the direction opposite to the direction corresponding to the zoom drive direction, the zoom drive speed is reduced by an amount proportional to the zoom drive speed (preset value B'old) at that time. be able to.

Then, during the preset drive control operation, the main routine including steps 901 to 910 is repeatedly executed, and if the zoom switch 1 is operated a plurality of times in the direction corresponding to the zoom drive direction during that time, the main routine is executed for each operation. The zoom drive speed is gradually increased greatly, and when the zoom switch 1 is operated a plurality of times in the direction opposite to the direction corresponding to the zoom drive direction, the zoom drive speed is gradually reduced for each operation. Will be done.

Moreover, according to this embodiment, the preset value is stored and held in the storage unit 25 every time it is changed during the preset drive control operation, and the last changed preset value is stored and held in the storage unit 20. Therefore, it can be used as a preset value when starting the next preset drive control operation after the end of this preset drive control operation. If a memory such as an EEPROM that retains stored contents even when the power is turned off is used as the storage unit 20, it can be used as a preset value at the start of the preset drive control operation after the power is turned on again.

In this embodiment, when the zoom switch 1 is operated in the operation direction corresponding to the zoom drive direction during the preset drive control operation, the zoom drive speed is increased and the zoom switch 1 is operated in the opposite direction. Although the case where the zoom drive speed is decelerated has been described above, the relationship between the operation direction of the zoom switch and the acceleration / deceleration may be reversed. That is, when the zoom switch 1 is operated in the direction opposite to the direction corresponding to the zoom driving direction, the zoom driving speed is increased, and when the zoom switch 1 is operated in the direction corresponding to the zoom driving direction, the zoom driving speed is decelerated. You may do it. In this case, the equation (13) of step 954 in FIG. 13 is set to B ′ = B′old− (B′old ×× K2), and the equation (14) of step 955 is changed to B ′ = B′old− (B 'old x K2) should be used.

In each of the above embodiments, the case where the zoom switch 1 is used as the operating means (predetermined operating means) for changing the preset value during the preset drive control operation has been described, but the zoom lens optical system can be remotely operated. A zoom demand thumb ring used for driving may be used as the predetermined operation means, or a switch dedicated to changing the preset speed may be used.

Further, in each of the above embodiments, the case where the preset speed information and the preset direction information are stored as the preset values has been described. However, the preset speed information and the preset position information are stored, and the preset speed information is stored in the preset speed information. The present invention can also be applied to the case of performing preset drive control for driving the zoom lens optical system to a position corresponding to preset position information at a corresponding speed. In this case, the zoom drive speed is increased (or decelerated) by operating the zoom switch in the telephoto direction regardless of the zoom drive direction during preset drive control operation, and the zoom drive speed is decreased (or increased) by operating the wide-angle direction. The zoom switch may be accelerated (or decelerated) when operated in the operating direction corresponding to the zoom driving direction during preset drive control operation, and decelerated (or accelerated) when operated in the opposite operating direction. ).

In the third, fourth, seventh and eighth embodiments, the case where the preset value is increased or decreased is determined from the relationship between the preset direction represented by the preset value and the operation direction of the zoom switch has been described. The increase / decrease of the preset value may be determined based on the relationship between the direction component of the speed signal output from the detector 14 and the operation direction of the zoom switch.

Further, in each of the above-mentioned embodiments, the lens device constructed by mounting the drive unit 200 on the lens device main body 100 shown in FIG. 2 has been described.
The zoom lens optical system and other optical adjusting means and the drive / control system are housed in one exterior, and are attached to the camera as an integrated body to be applied to a lens device constituting a camera system.

Further, in each of the above embodiments, the case where the preset drive control of the zoom lens optical system 9 is performed has been described. It can also be applied to regulatory systems).

[0171]

As described above, according to the present invention,
According to the operation of the predetermined operation means during the preset drive control, the preset speed information that determines the drive speed of the optical adjusting means in the preset drive control is changed and set. The optical device and the optical device capable of increasing or decreasing the drive speed of the optical adjusting means while continuing the preset drive control
A device drive unit can be realized.

[Brief description of drawings]

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

FIG. 2 is an external plan view of the lens device.

FIG. 3 is a processing flowchart when the zoom lens optical system is normally driven by a zoom switch in the lens apparatus.

FIG. 4 is a processing flowchart for setting and storing preset speed and preset direction in the lens device.

FIG. 5 is a main processing flowchart at the time of preset drive control operation in the lens apparatus.

FIG. 6 is a processing flowchart for changing a preset value during a preset drive control operation in the lens apparatus.

FIG. 7 is a processing flowchart for changing a preset value during a preset drive control operation in the lens device according to the second embodiment of the present invention.

FIG. 8 is a processing flowchart for changing a preset value during a preset drive control operation in the lens device according to the third embodiment of the present invention.

FIG. 9 is a processing flowchart for changing a preset value during a preset drive control operation in the lens device according to the fourth embodiment of the present invention.

FIG. 10 is a processing flowchart for changing a preset value during a preset drive control operation in the lens device according to the fifth embodiment of the present invention.

FIG. 11 is a process flowchart for changing a preset value during a preset drive control operation in the lens device according to the sixth embodiment of the present invention.

FIG. 12 is a processing flowchart for changing a preset value during a preset drive control operation in the lens device according to the seventh embodiment of the present invention.

FIG. 13 is a processing flowchart for changing a preset value during a preset drive control operation in the lens device according to the eighth embodiment of the present invention.

[Explanation of symbols]

1 ... Zoom switch 2 ... Command signal generator 3 ... Zoom speed variable volume 4 ... Command signal calculator 5, 16, 19 ... A / D converter 6 ... CPU 7 ... Preset switch 8 ... Memory switch 9 ... Zoom lens optical system 10 ... D / A converter 11 ... CPU command signal calculation unit 12 ... Power amplifier 13 ... Motor 14 ... Speed detector 15 ... Speed signal calculation unit 17 ... Position detector 18 ... Position signal calculation unit 20 ... storage unit

Continuation of the front page (56) References JP 2000-13646 (JP, A) JP 6-276421 (JP, A) JP 7-58989 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G02B ⁷ /02-7/16 H04N 5/222-5/257

Claims (35)

(57) [Claims] 1. A lens and other optical adjustment means are stored in the storage means.
An optical device that performs preset drive control to drive at a speed corresponding to preset speed information that is information on drive speed stored in the preset drive control, wherein a preset operation means is operated during preset drive control. An optical device characterized by changing and setting speed information to change a driving speed of the optical adjusting means. 2. The optical device according to claim 1, wherein a change amount of the preset speed information is set according to an operation amount of the predetermined operation means. 3. The optical device according to claim 2, wherein the change amount of the preset speed information is set according to the operation amount of the predetermined operation means and the drive speed of the optical adjustment means at the time of this operation. . 4. Each time the predetermined operation means is operated,
The optical device according to claim 1, wherein the change amount of the preset speed information is set according to the drive speed of the optical adjusting means at the time of this operation, regardless of the operation amount. Wherein said preset drive control, said optical adjusting means at a speed corresponding to the preset speed information stored in the storage means, the stored driving direction in the storage means
The predetermined operating means has two operating directions corresponding to the two driving directions of the optical adjusting means, and the predetermined operating means is driven in a direction corresponding to preset direction information. Is changed to one of the two operating directions in a predetermined direction, the preset speed information is changed to a speed increasing side, and when the other is operated to a predetermined other direction, the preset speed information is changed to a decelerating side. The optical device according to any one of claims 1 to 4, which is characterized in that. Wherein said preset drive control, said optical adjusting means at a speed corresponding to the preset speed information stored in the storage means, the stored driving direction in the storage means
The predetermined operating means has two operating directions corresponding to the two driving directions of the optical adjusting means, and the predetermined operating means is driven in a direction corresponding to preset direction information. Is operated in one of the two operating directions corresponding to the current driving direction of the optical adjusting means, the preset speed information is changed to the speed increasing side, which is opposite to the current driving direction of the optical adjusting means. The optical device according to any one of claims 1 to 4, wherein the preset speed information is changed to a deceleration side when operated in an operation direction corresponding to the direction. 7. The drive position stored in the storage means at a speed corresponding to preset speed information stored in the storage means by the preset drive control.
The predetermined operating means has two operating directions corresponding to the two driving directions of the optical adjusting means, and the predetermined operating means is driven to a position corresponding to preset position information which is information of Is changed to one of the two operating directions in a predetermined direction, the preset speed information is changed to a speed increasing side, and when the other is operated to a predetermined other direction, the preset speed information is changed to a decelerating side. The optical device according to any one of claims 1 to 4, which is characterized in that. Wherein said preset drive control, said optical adjusting means at a speed corresponding to the preset speed information stored in the storage means, has been driving position stored in the storage means
The predetermined operating means has two operating directions corresponding to the two driving directions of the optical adjusting means, and the predetermined operating means is driven to a position corresponding to preset position information which is information of Is operated in one of the two operating directions corresponding to the current driving direction of the optical adjusting means, the preset speed information is changed to the speed increasing side, which is opposite to the current driving direction of the optical adjusting means. The optical device according to any one of claims 1 to 4, wherein the preset speed information is changed to a deceleration side when operated in an operation direction corresponding to the direction. 9. The preset speed information at the end of the preset drive control is stored in the storage means and set as the preset speed information at the start of the next preset drive control.
The optical device according to any one of 1. 10. Before the preset speed information and the preset direction information at the end of the preset drive control
7. The storage means stores and holds the preset speed information and preset direction information at the start of the next preset drive control.
The optical device according to. 11. The preset speed information and the preset position information at the end of the preset drive control are set in advance.
9. The storage means holds the information and sets it as preset speed information and preset position information at the start of the next preset drive control.
The optical device according to. 12. The optical device according to claim 1, wherein the optical adjusting unit is a zoom lens optical system that performs variable power adjustment. 13. The operation means, wherein the predetermined operation means is an operation means operated for instructing the drive of the optical adjusting means during drive control other than during the preset drive control. The optical device according to any one of 1. 14. The predetermined operation means is a dedicated operation means that is operated to change the drive speed of the optical adjusting means during the preset drive control. The optical device according to item 1. 15. Before starting the preset drive control,
The preset speed information corresponding to the driving speed at the time of operation is stored in the storage unit in response to the storage instruction operating unit being operated while the optical adjusting unit is being driven at an arbitrary speed. Item 15. The optical device according to any one of items 1 to 14. 16. The optical device according to claim 15, wherein after the preset speed information is stored, the preset drive control is started in response to an operation of a preset drive start operation means. 17. The optical adjusting means is mounted or connected to an optical device body having a lens and other optical adjusting means.
An optical device drive unit for performing preset drive control for driving at a speed corresponding to preset speed information which is information on drive speed stored in a storage means , wherein a predetermined operation means is operated during the preset drive control. Accordingly, the drive speed of the optical adjusting means is changed by changing and setting the preset speed information. 18. The optical device drive unit according to claim 17, wherein a change amount of the preset speed information is set according to an operation amount of the predetermined operation means. 19. The optical apparatus according to claim 17, wherein the change amount of the preset speed information is set according to the operation amount of the predetermined operation unit and the drive speed of the optical adjustment unit at the time of this operation. Device drive unit. 20. Each time the predetermined operation means is operated, the change amount of the preset speed information is set according to the drive speed of the optical adjustment means at the time of operation, regardless of the operation amount. The optical device drive unit according to claim 17. 21. the preset drive control, at a speed corresponding to the optical modulating means to the preset speed information stored in said storage means, driving direction stored in said storage means
Direction information corresponding to preset direction information, and the predetermined operation means has two operation directions corresponding to two drive directions of the optical adjustment means. When the means is operated in one of the predetermined two operation directions, the preset speed information is changed to the speed increasing side, and when the means is operated in the other predetermined direction, the preset speed information is changed to the decelerating side. The optical device drive unit according to any one of claims 17 to 20, wherein: 22. The driving method stored in the storage means at a speed corresponding to preset speed information stored in the storage means in the preset drive control.
Direction information corresponding to preset direction information, and the predetermined operation means has two operation directions corresponding to two drive directions of the optical adjustment means. When the means is operated in one of the two operation directions corresponding to the current drive direction of the optical adjusting means, the preset speed information is changed to the speed increasing side, and the current drive direction of the optical adjusting means is 21. The optical device drive unit according to claim 17, wherein the preset speed information is changed to a deceleration side when operated in an operation direction corresponding to a reverse direction. 23. the preset drive control, said optical adjusting means at a speed corresponding to the preset speed information stored in said storage means, said storage means the stored driven position
The predetermined operation means has two operation directions corresponding to two drive directions of the optical adjusting means, and the predetermined operation information is driven to a position corresponding to preset position information which is position information. When the means is operated in one of the predetermined two operation directions, the preset speed information is changed to the speed increasing side, and when the means is operated in the other predetermined direction, the preset speed information is changed to the decelerating side. The optical device drive unit according to any one of claims 17 to 20, wherein: 24. the preset drive control, said optical adjusting means at a speed corresponding to the preset speed information stored in said storage means, said storage means the stored driven position
The predetermined operation means has two operation directions corresponding to two drive directions of the optical adjusting means, and the predetermined operation information is driven to a position corresponding to preset position information which is position information. When the means is operated in one of the two operation directions corresponding to the current drive direction of the optical adjusting means, the preset speed information is changed to the speed increasing side, and the current drive direction of the optical adjusting means is 21. The optical device drive unit according to claim 17, wherein the preset speed information is changed to a deceleration side when operated in an operation direction corresponding to a reverse direction. 25. The preset speed information at the end of the preset drive control is stored and held in the storage means ,
The optical device drive unit according to any one of claims 17 to 24, which is set as preset speed information at the start of the next preset drive control. 26. Before the preset speed information and the preset direction information at the end of the preset drive control
23. The optical device drive unit according to claim 21 or 22, wherein the optical device drive unit is stored and held in the storage means and set as preset speed information and preset direction information at the time of starting the next preset drive control. 27. Before the preset speed information and preset position information at the end of the preset drive control
25. The optical device drive unit according to claim 23 or 24, wherein the optical device drive unit is stored and held in the storage means and set as preset speed information and preset position information at the start of the next preset drive control. 28. The optical device drive unit according to claim 17, which drives a zoom lens optical system as the optical adjustment means for performing variable power adjustment. 29. The predetermined operation means is an operation means operated to instruct the drive of the optical adjusting means during drive control other than the preset drive control. An optical device drive unit according to any one of 1. 30. Any one of claims 17 to 28, wherein the predetermined operation means is a dedicated operation means that is operated to change the drive speed of the optical adjustment means during the preset drive control. An optical device drive unit according to item 1. 31. Before the preset drive control is started,
The preset speed information corresponding to the driving speed at the time of operation is stored in the storage unit in response to the storage instruction operating unit being operated while the optical adjusting unit is being driven at an arbitrary speed. Item 31. The optical device drive unit according to any one of items 17 to 30. 32. The optical device drive unit according to claim 31, wherein after the preset speed information is stored, the preset drive control is started in response to an operation of a preset drive start operation means. 33. A camera system, comprising: the optical device according to claim 1; and a camera to which the optical device is attached. 34. An optical device, comprising: the optical device drive unit according to claim 17; and an optical device body to which the drive unit is attached or connected. 35. An optical device drive unit according to claim 17, an optical device main body to which this drive unit is attached or connected, and a camera to which this optical device main body is attached. A camera system characterized by being configured.