JPH1127702A - Lens control device for 3D imaging device - Google Patents

Abstract

[PROBLEMS] To easily and accurately link the angles of view and focal lengths of two 3D image pickup apparatuses to which interchangeable zoom lenses are attached by zoom operation. A position control input signal input from an instruction input unit is input to a position control unit.
A position control signal for the drive motor 2a for driving the position of the lens system La via the operation ring 1a such that the difference between the position control input signal and the position detection signal of the operation ring 1a detected by the potentiometer 3a becomes zero. Is output. The output buffer 5a inputs the position detection signal from the potentiometer 3a as a position control input signal to the position control unit 4b that controls the position of the lens system Lb via the connection line LL. As a result, the positions of the lens systems La and Lb as the two 3D lenses are controlled to be the same, and the respective lens systems La and Lb are controlled.
The angle of view taken by Lb is set the same.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens control device for a 3D image pickup apparatus that obtains a 3D image using two interchangeable image pickup lenses, for example, a zoom of two image pickup lenses in a broadcast television camera. The present invention relates to a 3D lens control device capable of performing an interlocking control for making an angle of view the same using a function.

[0002]

2. Description of the Related Art Conventionally, when a 3D (three-dimensional) image is obtained, two image pickup devices installed at a predetermined interval between eyes are used.

For example, FIG. 4 is a block diagram showing a configuration of one of two imaging devices constituting a conventional 3D imaging device. In the imaging apparatus shown in FIG. 4, an operation ring 41 in a lens system L4, which is a zoom lens, is rotationally driven by a drive motor 42, and zooming is performed by this rotational drive. The image via the lens system L4 is
An image is captured by an image sensor C4 such as a CCD. The position control unit 44 switches based on a position detection signal from the potentiometer 43 for detecting the rotational position of the operation ring 41 and a control input signal from the instruction input unit 46 for indicating a predetermined position of the lens system L4. The position of the drive motor 42 is controlled via the switch SW1. The output from the position control unit 44 is also input to a speed control input unit 47, and the speed control input unit 47
A speed control signal for zooming speed control is input to the speed control unit 48, and the speed control unit 48 controls the speed of the drive motor 42 via the switch SW1. The switch SW1 is connected to the input from the position control unit 44 and the speed control unit 4
8 is selectively transmitted to the drive motor 42 and transmitted to the drive motor 42. The position control unit 44 controls the drive motor 42 by position control, and the speed control controls the drive motor 42 by speed control. The connection is switched to the control unit 48.

Here, the drive motor 42 is controlled by speed control.
, The zooming can always be performed at a constant speed even when the torque of the drive motor 42 with respect to the operation ring 41 fluctuates, and smooth zooming can be performed. On the other hand, when the drive control of the drive motor 42 is performed by the position control, the stop position of the lens system L4 can be accurately determined, and thus is used for focusing or the like.

If an attempt is made to obtain a 3D image by using two imaging devices shown in FIG. 4, in the case of speed control, the zoom lens of one of the imaging devices for the left eye or the right eye is zoomed. Then, while referring to the monitor screen to be imaged, the zoom lever of the other one imaging device is operated in small increments, and the angle of view of the other one imaging device is changed. The angle of view is set to be the same as the angle of view captured by this one imaging device.

On the other hand, when the position control is performed, if the position control system 40 is not built in, the position control is performed after the position control system 40 is mounted outside the image pickup apparatus. However, in this position control, as in the case of the speed control, after the zooming to a predetermined position is set by one imaging device, the predetermined position control is performed independently from the instruction input unit 46 in the other one imaging device. The signal is applied to the position controller 44,
While referring to the monitor screen in the same manner as the speed control,
The angle of view of one imaging device is set to be the same as the angle of view captured by one imaging device whose position is already controlled.

When a 3D image is obtained without performing zooming, each image pickup device is mounted on, for example, a moving device on a rail, so that the angle of view to be taken is the same.

[0008]

However, in the conventional 3D image pickup apparatus, in either case of speed control or position control, it is necessary to match the angle of view or the like of the two 3D image pickup apparatuses by zooming. Since the zoom operation of another one imaging device is performed with reference to the monitor screen, considerable skill is required, and there is a problem that it is generally difficult.

[0009] In addition, when the two 3D image pickup devices simultaneously match the angle of view and the like by zooming, there is a problem that at least two operators are required.

Further, when the performance of an interchangeable zoom lens attached to each 3D image pickup device differs,
If the size of the imaging device in the imaging device for D is different,
Even if a skilled operator performs a zoom operation, it is not easy in operation to match the angle of view and the focal length by this zooming.

On the other hand, in order to obtain a 3D image without performing zooming, a device such as a rail and a moving device on the rail is required, and there is a problem that an imaging range is limited.

Accordingly, the present invention eliminates such a problem, and provides two sets of three interchangeable zoom lenses.
It is an object of the present invention to provide a lens control device for a 3D imaging device that can easily and accurately link the angle of view and the focal length by a zoom operation of the imaging device for D.

[0013]

According to one aspect of the present invention, a first lens for projecting an object field and a second lens for projecting an object field are provided.
And a control means for interlocking each drive of the first and second projection lenses to make the angles of view of the field projected by the first and second projection lenses substantially the same. A lens controller for a 3D imaging device is provided. With such a configuration, the position of the second projection lens can be automatically controlled to a position having the same angle of view as that of the first projection lens only by instructing the position control of the first projection lens. Therefore, the projections can be easily, reliably, accurately, and simultaneously performed without individually inputting the same angle of view to the first and second lenses as in the related art. The lenses are automatically set to the same angle of view.

In this case, the control means controls the first and second projection lenses at the same first angle of view at a first point in time and the first angle of view at a second point in time. It may be configured to drive to a different second angle of view. With such a configuration, it is possible to align the first and second projection lenses at an angle of view different from the angle of view at the previous time point at each time point, thereby greatly improving the operability of 3D imaging. it can.

Further, in the lens control device for a 3D image pickup device, a first image pickup element for picking up an image of a field projected by the first projection lens, and an object projected by the second projection lens. A second image pickup element for picking up an image of the field, wherein the control means includes: an angle of view of a field that the first projection lens projects onto an image pickup range of the first image pickup element; The angle of view of the object field projected by the second projection lens onto the imaging range of the second imaging element can be made substantially the same. With such a configuration, the first and second
Are automatically set to have the same angle of view of the field of view projected on the respective image pickup ranges of the image pickup devices, and 3D imaging is automatically performed appropriately in accordance with the image pickup device used.

Further, in the lens control device for a 3D image pickup device according to claim 1, the control means controls the focal lengths of the first and second projection lenses to thereby control the first and second projection lenses. The angle of view of the two projection lenses can be the same. By controlling the focal lengths of the first and second projection lenses to make the angle of view the same, it is not necessary to adjust the distance of each of the image pickup devices constituting the 3D image pickup device from the field, and the like. It is possible to accurately perform imaging at the same angle of view on the left and right.

Further, in the lens control device for the 3D image pickup device, there is further provided position detecting means for detecting a driving position of the first projection lens and outputting a position detection signal,
The control means may control the second control based on the position detection signal.
It is convenient to drive and control the projection lens. By driving and controlling the second projection lens based on the driving position of the first projection lens, the first and second projection lenses can be accurately controlled with a simple configuration.
Of the projection lens can be adjusted.

In the lens control device for a 3D image pickup device, the control means may be arranged so that the first and second image pickup devices have substantially the same size.
Can be configured so that the respective focal lengths of the projection lenses are controlled to be substantially the same. When the sizes of the first and second imaging elements are substantially the same, the focal length of each projection lens is controlled to be substantially the same, so that the angle of view of the field of view by each projection lens is accurately and substantially the same in a simple procedure. Can be controlled.

In the lens control apparatus for a 3D image pickup apparatus, there is further provided an instructing means for instructing and inputting a target position of the first projection lens, wherein the control means controls the target position based on the driving position. Alternatively, the first projection lens can be driven. By driving the first projection lens to the target position of the first projection lens input by the instruction input means based on the driving position, the first projection lens can be accurately driven to a desired target position. Will be possible.

Further, in the lens control device for a 3D image pickup device, a conversion means for converting a control characteristic of the first projection lens into a control characteristic of the second projection lens may be provided. Thus, even when the control characteristics of the first and second projection lenses are different, the automatic setting is performed so as to ensure the same angle of view. That is, even when the correspondence between the control positions of the projection lenses is different, the interlocking control can be performed reliably and accurately.

In this case, there is further provided a position detecting means for detecting a driving position of the first projection lens and outputting a position detecting signal, wherein the converting means detects the first projection lens based on the position detecting signal. It may be configured to convert the control characteristics of the lens into the control characteristics of the second projection lens. With such a configuration, even if the control characteristics of each projection lens are different from the position detection signal corresponding to the driving position of the first projection lens, the second projection lens can be driven accurately, and the same image can be reliably obtained. It can be controlled to be a corner.

Also, the first conversion characteristic, which is the conversion characteristic of the conversion means when the first and second projection lenses are at the first angle of view, and the first and second projection lenses are A conversion characteristic acquisition unit configured to acquire a second conversion characteristic that is a conversion characteristic of the conversion unit when the second and third conversion characteristics are at a second angle of view different from the first angle of view; The first and second projection lenses are based on the first
Calculating means for calculating a third conversion characteristic which is a conversion characteristic of the conversion means when the angle of view is a third angle of view different from the second angle of view. Thereby, when obtaining the conversion characteristics of the first and second projection lenses, the conversion characteristics at a representative angle of view are obtained, and the conversion characteristics at another angle of view are obtained by the calculating means. it can. Therefore, the conversion characteristics can be easily obtained, and the angle of view can be controlled accurately.

In this case, the conversion means may have a plurality of sets of the first, second, and third conversion characteristics. By providing the conversion means with a plurality of sets of the first and second conversion characteristics and the third conversion characteristic calculated from the first and second conversion characteristics, a large number of conversion characteristics can be obtained in advance. In addition, the angle of view can be accurately controlled over a wide angle of view of each projection lens.

According to another aspect of the present invention, there is provided a correction circuit for a 3D imaging device connectable to a first projection lens and a second projection lens, wherein the correction circuit adjusts a control characteristic of the first projection lens. A conversion for converting the control characteristic of the corresponding second projection lens such that the angle of view of the field of view of the first projection lens and the angle of view of the field of view of the second projection lens are substantially the same. It is characterized by having means. With such a configuration, the correction circuit for the 3D image pickup apparatus can be realized as an independent unit. Even if the control characteristics of the first and second projection lenses are different due to the correction circuit, both of them can be realized. It becomes possible to flexibly and accurately perform interlocking control for equalizing the angle of view of the field by the projection lens.

In this case, the first projection lens has position detecting means for detecting a driving position and outputting a position detection signal, and the correction circuit for the 3D image pickup device receives the position detection signal. A converting unit configured to convert the control characteristic of the first projection lens into the control characteristic of the second projection lens based on the position detection signal. With such a configuration, in the 3D imaging device correction circuit, it is possible to accurately control the drive position of the second projection lens according to the drive position of the first projection lens. Therefore, even if the control characteristics of the first and second projection lenses are different, the drive positions of the first and second projection lenses can be accurately controlled such that the angles of view of the two become substantially the same.

In the correction circuit for a 3D image pickup apparatus, a first conversion characteristic which is a conversion characteristic of the conversion means when the first and second projection lenses are at a first angle of view; A conversion characteristic acquisition unit that acquires a second conversion characteristic that is a conversion characteristic of the conversion unit when the first and second projection lenses are at a second angle of view different from the first angle of view; Based on the first and second conversion characteristics, wherein the first and second projection lenses are at a third angle of view different from the first angle of view and the second angle of view. Calculation means for calculating a third conversion characteristic, which is a conversion characteristic, may be further provided. With such a configuration, for example, it is possible to acquire the respective conversion characteristics at two angles of view and calculate the third conversion characteristic based on these conversion characteristics, and to obtain the conversion characteristics at any desired angle of view. Is accurately calculated, and the interlocking control of the first and second projection lenses at the angle of view can be accurately performed.

In this case, the conversion means may have a plurality of sets of the first, second, and third conversion characteristics. As a result, the conversion characteristics can be accurately obtained at various angles of view, and the interlocking control of the first and second projection lenses can be performed accurately and accurately over a wide angle of view.

[0028]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration of a 3D lens control device according to a first embodiment of the present invention. In FIG. 1, the 3D lens control device is mainly composed of two 3D lens control units 1A and 1B, which correspond to a left-eye imaging device and a right-eye imaging device, respectively.

Each of the 3D lens control units 1A and 1B has interchangeable zoom lens systems La and Lb composed of at least two or more lens systems. The lens systems La and Lb move the respective groups in the lens system partially or entirely on the optical axis by rotating the operation rings 1a and 1b, respectively, thereby changing the focal length and changing the entire lens system. To change the angle of view. Each of the lens systems La and Lb projects an image of a field of view on the light receiving surfaces of the imaging elements Ca and Cb, respectively. In this sense, each lens system L
a and Lb can be referred to as projection lenses.

The drive motors 2a, 2b are provided with operating rings 1a, 1
b is rotated. Drive motors 2a, 2b and operating rings 1a,
The operation rings 1a and 1b rotate in accordance with the rotation of the drive motors 2a and 2b. This operation ring 1a,
Potentiometers 3a and 3b for detecting the rotational positions of the operation rings 1a and 1b are similarly mounted on the outer periphery of the 1b. The potentiometers 3a and 3b detect the positions of the lens systems La and Lb as voltages.

The position detection signals as voltages from the potentiometers 3a and 3b are output to an output buffer 5 for output.
a and 5b, and are input to the position controllers 4a and 4b, respectively.

The position control unit 4a receives an instruction from the instruction input unit 6
A position control instruction signal for changing the lens system La to a predetermined position is also input.

The position control section 4b receives a position detection signal from the output buffer 5a via a connection line LL.

The position control unit 4a includes a potentiometer 3a
A position control signal for reducing the difference between the detected position indicated by the position detection signal and the indicated position indicated by the position control instruction signal to zero based on the position detection signal from the controller and the position control instruction signal from the instruction input unit 6. 2a to rotate the operation ring 1a.

On the other hand, the position control section 4b outputs to the drive motor 2b a position detection signal for reducing the difference between the position detection signal from the potentiometer 3b and the position detection signal input from the output buffer 5a to the drive motor 2b. Is rotated to make the position of the lens system Lb coincide with the position of the lens system La.

With such a simple configuration in which the output buffer 5a and the position control section 4b are connected by the connection line LL, the lens system is controlled by inputting a position control instruction signal from the instruction input section 6 to the 3D lens control section 1A. The position of La can be changed, and other lens systems Lb
Can be changed in conjunction with the same position as the position of the lens system La. Then, the images input via the lens systems La and Lb have the same angle of view or, if the size of the imaging elements Ca and Cb, that is, the size of the imaging range, is the same as the same angle of view. The image is captured by the imaging elements Ca and Cb at the focal length, and the captured image is recorded in a recording unit (not shown).

Since the position controllers 4a and 4b have the same configuration and function, the movement from one lens system position to the next lens system position is performed within the same time. Become. Therefore, in this case, the same angle of view can be set at the second point in time from the same angle of view at the first point in time.

Further, since the lens system can be moved to a predetermined position within the same time, a change in position from a position of one lens system to a position of the next lens system, that is, a change in speed is performed almost in the same manner.

Here, the angle of view of an image picked up by the 3D image pickup device will be described with reference to FIG. In FIG. 2, first, the 3D lens control units 1A and 1B perform the display field, that is, the imaging target E at the same angle of view β1
1 is imaged. Here, since the angles of view β1 and β2 are position control, they are automatically set to the same angle of view via the connection line LL. The angle of view in FIG. 2 shows the angle of view only in the horizontal direction for convenience of explanation.

Next, when the angle of view of the 3D lens controller 1A is changed from β1 to α1 via the instruction input unit 6, that is, when the variator or the like of the lens system is moved from the wide end to the tele end, the angle of view becomes small. The show scene, that is, the imaging object is E
It becomes 2. At the same time, the position detection signal from the 3D lens control unit 1A is input to the 3D lens control unit 1B via the connection line LL as a position control input signal. With this position control input signal, the angle of view of the 3D lens controller 1B is also controlled from β2 to α2, and the angle of view β2 is set to the same angle of view as the angle of view β1.

Next, a second embodiment will be described with reference to FIG. In the first embodiment, the configuration in the case where the interchangeable 3D lenses are the same, that is, the case where the zoom magnification and the like are the same has been described, but in the second embodiment,
Even when interchangeable 3D lenses have different specifications such as different zoom magnifications, the same angle of view, the same focal length, and the like can be obtained.

For example, in FIG. 3, when the voltage indicating the position of the lens system L1a at a certain angle of view is 0.5 volt, the voltage indicating the position of the lens system L1b at this certain angle of view is 0.55 volts. In the case of bolts, the same angle of view cannot be obtained with the same configuration as in the first embodiment in which the output buffer 5a and the position control unit 4b are simply connected by the connection line LL.

For this reason, as shown in FIG. 3, in the second embodiment, a correction circuit CP for converting the correspondence of the position control signals between the 3D lens control units 11A and 11B is provided with the output buffer 15a and the position control signal. It is provided between the portion 14b.
Other configurations are the same as those of the first embodiment.

In FIG. 3, the correction circuit CP has a switch SW, a conversion table 17, a setting volume 18, a correction setting unit 19, and a calculation unit 20.

The switch SW converts the position detection signal from the output buffer 15a into the conversion table 17 or the correction setting unit 1.
Switch the output to 9.

The correction setting section 19 switches the switch SW to the correction setting section 19 side, and the 3D lens control section 11A
The discrete correspondence between the detection voltage indicated by the position detection signal from the CPU and the control voltage to the 3D lens control unit 11B set by the setting volume 18 is set. The setting by the setting volume 18 adjusts the images taken out from the imaging elements C1a and C1b by looking at a monitor (not shown), and associates the detection voltage and the control voltage when the angles of view and the like match. For example, the lens system L1 whose position is controlled by the instruction input unit 16 and has a predetermined angle of view
If the detected voltage of a is 0.5 volt, the control voltage is output by adjusting the setting volume 18 so that the angle of view becomes the same as the predetermined angle of view. As a result, when the angle of view of the lens system L1b becomes the same as the predetermined angle of view, the control voltage is set to 0.1.
In the case of 55 volts, the 0.5 volt and the 0.55 volt are associated. Similarly, the lens system L1a
Is changed discretely from the telephoto end to the wide end, and the position change of the lens system L1b corresponding to this position change is set as the correspondence between the detected voltage value change and the control voltage value change. This correspondence is sent to the calculation unit 20.

The calculating unit 20 calculates a continuous correspondence based on the input discrete correspondence. For example, a continuous correspondence as an approximate curve passing through discrete values is calculated. After that, the calculating unit 20 outputs the continuous correspondence to the conversion table 17 and stores the same in the conversion table 17. Here, since the lens systems L1a and L1b are interchangeable 3D lenses, the lens systems L1a and L1b
An identifier that can identify b may be added to the continuous correspondence. When this identifier is added, a plurality of continuous correspondences can be stored, and various interchangeable 3D lenses can be handled.
However, a configuration that can recognize the identifier or a configuration that switches various correspondences is required. Alternatively, a configuration may be employed in which a plurality of conversion tables are provided, and each of the conversion tables is switched by the switch SW.

When the continuous correspondence is stored in the conversion table 17, the switch SW is switched to the conversion table 17 side. As a result, the position detection signal from the output buffer 15a is input to the position control unit 14b as a position control input signal for the lens system L1b corresponding to the position detection signal input by the conversion table 17. After the input of the position control signal, the same interlocking control as in the first embodiment shown in FIG. 1 is performed.

When the sizes of the image pickup devices C1a and C1b are different, the focal lengths are different. In this case, the focal lengths are automatically set to have the same angle of view.

The correction circuit CP in which the conversion table 17 is set is connected to the output buffer 15a and the position control unit 14b.
Replaceable by placing between and connecting
Even when the characteristics of the D lenses are different, the position of the two 3D lenses is linked and controlled by an instruction from one instruction input unit 16, and the same angle of view and focal length are automatically set.

Even when this configuration is used when each lens has the same zoom magnification and the like in terms of specifications, the effect of errors due to variations in each lens and the like can be removed, and more precise control can be performed. .

[0052]

As described above, according to the present invention, there is no need for a complicated operation for operating each of two lenses as in the prior art, and the same simple operation as operating a single lens is required. It is possible to obtain the same angle of view by a simple operation. For this reason, the operator can concentrate on photographing similarly to a conventional single lens camera without being conscious of 3D photographing. Therefore, it is possible to expand the image expression by 3D imaging.

Further, according to the present invention, the correction circuit for the 3D image pickup apparatus can be realized only with a simple external circuit. It is possible to simplify the configuration of the photographing system and reduce the cost.

[Brief description of the drawings]

FIG. 1 is an explanatory block diagram showing a configuration of a 3D lens control device according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram for describing coincidence of two angles of view by a 3D lens control device.

FIG. 3 is an explanatory block diagram illustrating a configuration of a 3D lens control device according to a second embodiment of the present invention.

FIG. 4 is an explanatory block diagram illustrating a configuration of one 3D lens control device of a conventional 3D imaging device.

[Explanation of symbols]

 1a, 1b Operation ring 2a, 2b Drive motor 3a, 3b Potentiometer 4a, 4b Position control unit 5a, 5b Output buffer 6 Instruction input unit 6 La, Lb Lens system Ca, Cb Image sensor LL Connection line CP correction circuit SW switch 17 Conversion Table 18 Setting volume 19 Correction setting unit 20 Calculation unit

Claims (15)

[Claims] A first lens for projecting an object field, a second projection lens for projecting the object field, and driving each of the first and second projection lenses in association with each other;
Control means for making the angle of view of the field projected by the first and second projection lenses substantially the same, and a lens control device for a 3D image pickup device. 2. The lens control device for a 3D image pickup device according to claim 1, wherein the control unit controls the first and second projection lenses having the same first angle of view at a first time point. A lens controller for the 3D imaging device, wherein the lens controller is driven to a second angle of view different from the first angle of view at a second time point. 3. The lens control device for a 3D image pickup apparatus according to claim 1, wherein the first image pickup element picks up an image of an object field projected by the first projection lens, and the second projection lens. And a second image pickup device for picking up an image of the object scene projected by the first image pickup device. The angle of view and the second
Wherein the angle of view of the object field projected onto the imaging range of the second image sensor by the projection lens of
Lens control device for D imaging device. 4. The lens control device for a 3D image pickup device according to claim 1, wherein the control unit controls the first and second projection lenses by controlling a focal length of the first and second projection lenses. A lens control device for a 3D imaging device, wherein the angle of view of the projection lens is the same. 5. The lens control device for a 3D image pickup device according to claim 1, further comprising: a position detection unit that detects a driving position of the first projection lens and outputs a position detection signal. The means is configured to determine the second position based on the position detection signal.
A lens control device for a 3D image pickup device, wherein the lens control device controls driving of the projection lens. 6. The lens control device for a 3D image pickup device according to claim 3, wherein the control unit is configured to control the first and second image pickup devices when the first and second image pickup devices have substantially the same size. Wherein the respective focal lengths of the projection lens are controlled to be substantially the same.
Lens control device for D imaging device. 7. The lens control device for a 3D image pickup apparatus according to claim 5, further comprising an instruction unit configured to input an instruction of a target position of the first projection lens, wherein the control unit sets the target position to the drive position. A lens control device for a 3D imaging apparatus, wherein the first projection lens is driven to the target position based on the first projection lens. 8. The lens control device for a 3D image pickup apparatus according to claim 1, further comprising a conversion unit configured to convert a control characteristic of the first projection lens into a control characteristic of the second projection lens. Lens control device for a 3D image pickup device. 9. The lens control device for a 3D image pickup apparatus according to claim 8, further comprising a position detecting unit that detects a driving position of the first projection lens and outputs a position detection signal, wherein the conversion is performed. The means converts a control characteristic of the first projection lens into a control characteristic of the second projection lens based on the position detection signal. 10. The lens control device for a 3D imaging device according to claim 8, wherein the first and second projection lenses are conversion characteristics of the conversion unit when the first and second projection lenses are at a first angle of view. And the conversion characteristics of
A conversion characteristic acquisition unit that acquires a second conversion characteristic that is a conversion characteristic of the conversion unit when the first and second projection lenses are at a second angle of view different from the first angle of view; Based on the first and second conversion characteristics, the first and second projection lenses adjust the first angle of view and the second angle of view.
Calculating means for calculating a third conversion characteristic, which is a conversion characteristic of the conversion means when the third angle of view is different from the third angle of view, and a lens control device for a 3D image pickup apparatus. . 11. The lens control device for a 3D image pickup device according to claim 10, wherein the conversion unit has a plurality of sets of the first, second, and third conversion characteristics. Lens control device for 3D imaging device. 12. A correction circuit for a 3D image pickup device connectable to a first projection lens and a second projection lens, wherein the control characteristic of the second projection lens corresponding to the control characteristic of the first projection lens is provided. A 3D imaging apparatus, comprising: a conversion unit that converts the angle of view of the field of view of the first projection lens and the angle of view of the field of view of the second projection lens to be substantially the same. Correction circuit. 13. The correction circuit for a 3D image pickup apparatus according to claim 12, wherein the first projection lens has a position detection unit that detects a drive position and outputs a position detection signal. The device correction circuit further includes a receiving unit that receives the position detection signal, wherein the conversion unit changes a control characteristic of the first projection lens to a control characteristic of the second projection lens based on the position detection signal. A correction circuit for a 3D imaging device, which performs conversion. 14. The correction circuit according to claim 12, wherein the first and second projection lenses are at a first angle of view, and the first conversion is a conversion characteristic of the conversion unit. Characteristics and
A conversion characteristic acquisition unit that acquires a second conversion characteristic that is a conversion characteristic of the conversion unit when the first and second projection lenses are at a second angle of view different from the first angle of view; Based on the first and second conversion characteristics, the first and second projection lenses adjust the first angle of view and the second angle of view.
And a calculating means for calculating a third conversion characteristic which is a conversion characteristic of the conversion means when the third angle of view is different from the angle of view of the 3D image pickup apparatus. 15. The 3D imaging apparatus according to claim 14, wherein the conversion unit has a plurality of sets of the first, second, and third conversion characteristics. Device correction circuit.