JP2012198421A - Lens control system - Google Patents

Abstract

Provided is a lens control system capable of smoothly starting stereoscopic shooting after activation of a lens even when the lenses are exchanged in a lens interchangeable stereoscopic shooting system.
A lens control system includes a lens control device 30 that controls lens devices 10R and 10L attached to camera devices 10R and 10L, and a lens device 10R. The CPU 114 of the lens device 10R acquires specification data indicating the specifications of each of the lens devices 10R and 10L when the lens devices 10R and 10L are activated, and uses the acquired two specification data to obtain the specifications of the lens devices 10R and 10L. A starting focal length, which is a common focal length at each starting time, is determined, and control is performed to move each zoom lens of the lens devices 10R and 10L to a position corresponding to the starting focal length.
[Selection] Figure 4

Description

  The present invention relates to a lens control system.

  In recent years, development of so-called 3D-compatible flat-screen televisions that can show an image three-dimensionally to an observer has been active. In the TV industry, there is an increasing need to create 3D video data in a format that allows viewers to view video in 3D, and a TV camera system that supports 3D shooting that can obtain 3D video data. Demand is expected to increase in the future.

  In order to obtain stereoscopic video data, it is only necessary to obtain two pieces of video data with parallax at the same time, and a stereoscopic imaging system in which two imaging units are arranged to the left and right are generally used (see, for example, Patent Document 1). .

  The stereoscopic imaging device described in Patent Document 1 generates stereoscopic video data by capturing a left-eye image and a right-eye image by using two imaging units of the same type (same model number). In this stereoscopic photographing device, when the power switch is turned off, the extension position of the focus lens of the lens barrel included in each imaging unit and the focal length of the zoom lens are respectively set to predetermined reset positions (the focus lens position is at infinity). After moving the focusing position and zoom lens to the wide end), the power supply of the power supply circuit is completely turned off. With such control, when the cameraman turns on the power switch and resumes shooting, the focus and zoom states of each imaging unit are in the reset state, so that stereoscopic shooting can be started smoothly.

Japanese Patent Application Laid-Open No. 08-201940

  For the photographer who is the creator of the stereoscopic video data, the lens types of the two imaging units included in the stereoscopic imaging system are not fixed, but are preferably interchangeable in order to widen the image width. A stereoscopic photographing system is desired. However, Patent Document 1 does not consider the case where the lenses mounted on each of the two imaging units are exchangeable.

  The present invention has been made in view of the above circumstances, and provides a lens control system that can smoothly start stereoscopic shooting after activation of the lens even when the lens is replaced in a lens interchangeable stereoscopic shooting system. The purpose is to do.

  The lens control system according to the present invention provides the lens device in a stereoscopic photographing system that generates stereoscopic video data using two image data obtained by photographing each of two camera devices to which a lens device including a zoom lens can be attached and detached. The two camera devices can be mounted with different types of lens devices having different specifications including a focal length range, and two camera devices mounted on the two camera devices can be mounted on the two camera devices. At the time of starting up the lens device, the specification data acquisition unit for acquiring the specification data indicating the specification of each of the two lens devices and the two specification data acquired by the specification data acquisition unit are used. A starting focal length determining unit that determines a starting focal length to be set when each of the two lens devices is started, and each of the two lens devices. A zoom lens position control unit for start-up that performs control to move a zoom lens to a position corresponding to the start-up focal length, and the two lens devices in which the zoom lens is moved to a position corresponding to the start-up focal length. And a lens control device for controlling.

  According to the present invention, it is possible to provide a lens control system capable of smoothly starting stereoscopic shooting after activation of the lens even when the lenses are exchanged in the lens interchangeable stereoscopic shooting system.

The figure which shows schematic structure of the three-dimensional imaging system for describing one Embodiment of this invention The figure which shows the internal structure of the master lens apparatus 10R and the camera apparatus 20R in the three-dimensional video imaging system 100 shown by FIG. The figure which shows the internal structure of the slave lens apparatus 10L and the camera apparatus 20L in the stereoscopic video imaging system 100 shown by FIG. Sequence chart for explaining operations of the master lens device 10R and the slave lens device 10L in the stereoscopic photographing system 100 shown in FIG. The figure for demonstrating an example of the method of calculating the duplication range of specification data The figure which shows the modification of the three-dimensional imaging system 100 shown by FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a diagram showing a schematic configuration of a stereoscopic photographing system for explaining an embodiment of the present invention.

  A stereoscopic imaging system 100 shown in FIG. 1 includes two camera devices 20R and 20L arranged side by side in a direction in which parallax is desired, a master lens device 10R attached to the camera device 20R, and a slave attached to the camera device 20L. The lens control system includes a lens device 10L and a lens control device 30 that controls the master lens devices 10R and 10L.

  An image photographed by the master lens device 10R and the camera device 20R and an image photographed by the slave lens device 10L and the camera device 20L include an optical axis KR of the master lens device 10R and an optical axis KL of the slave lens device 10L. Since the parallax corresponding to the baseline length, which is the distance between the two, occurs, stereoscopic video data that can be stereoscopically viewed can be obtained by recording these two images in association with each other.

  The master lens device 10R includes an interface (IF) 41 as a communication unit for performing serial communication with the lens control device 30, and an interface (IF) 42 as a communication unit for performing serial communication with the slave lens device 10L. Prepare.

  The slave lens device 10L includes an interface (IF) 43 as a communication unit for performing serial communication with the master lens device 10R, and the IF 43 is connected to the IF 42 of the master lens device 10R.

  The lens control device 30 includes a focus controller 31 that controls a focus lens, which will be described later, included in the master lens device 10R, a focus knob 32 for a user to indicate a focus position, and a zoom lens, which will be described later, included in the master lens device 10R. And a zoom controller 34 for the user to indicate the zoom position.

  The focus controller 31 is a communication unit for communicating with the master lens device 10R, and includes an IF 36 connected to the IF 41 of the master lens device 10R, and an IF 37 connected to the IF 38 of the zoom controller 33, via the IF 36. It communicates with the master lens device 10R and communicates with the zoom controller 33 via the IF 37.

  FIG. 2 is a diagram showing an internal configuration of the master lens device 10R and the camera device 20R in the stereoscopic video imaging system 100 shown in FIG.

  The camera device 20R includes an imaging unit 201 including an imaging device arranged on the optical axis KR of the master lens device 10R, and a video signal that generates captured image data by processing an imaging signal obtained by imaging by the imaging unit 201. A processing unit 202, a CPU 203 that performs overall control of the entire camera device 20R, and an SCI (serial communication interface) 204 for performing communication with the master lens device 10R are provided.

  The photographing optical system of the master lens device 10R includes a focus lens 101, zoom lenses 102 and 103, an aperture 105, and a master lens 106, which are arranged in order from the subject side.

  The master lens device 10R further includes a focus motor 115 that controls the position of the focus lens 101, a zoom motor 116 that controls the positions of the zoom lenses 102 and 103, an aperture motor 117 that controls opening and closing of the aperture 105, and a focus motor. 115, a CPU 114 for driving the zoom motor 116 and the aperture motor 117, an SCI 113 for communicating with the camera device 20R, the IFs 41 and 42 described above, and a memory 118.

  The CPU 114 of the master lens device 10R drives the focus motor 115 and the zoom motor 116 according to the focus position command signal and the zoom position command signal received from the focus controller 31 via the IF 41, and performs focus position control and zoom position control. Do. In addition, the CPU 114 of the master lens device 10R transmits the focus position command signal and the zoom position command signal to the slave lens device 10L via the IF 42.

  The memory 118 stores specification data of the master lens device 10R. The specification data is data indicating the specifications of the lens device determined by the model number of the lens device, and includes data indicating, for example, a focal length range, a focus range, and an F value range of the lens device.

  FIG. 3 is a diagram showing an internal configuration of the slave lens device 10L and the camera device 20L in the stereoscopic video imaging system 100 shown in FIG.

  The camera device 20L includes an image pickup unit 301 including an image pickup element disposed on the optical axis KL of the slave lens device 10L, and a video signal that processes the image pickup signal obtained by the image pickup unit 301 and generates picked-up image data. A processing unit 302, a CPU 303 that performs overall control of the entire camera device 20L, and an SCI 304 that performs communication with the slave lens device 10L.

  The camera device 20R and the camera device 20L are of the same type (same model number).

  The photographing optical system of the slave lens device 10L includes a focus lens 401, zoom lenses 402 and 403, a diaphragm 405, and a master lens 406, which are arranged in order from the subject side.

  The slave lens device 10L further includes a focus motor 415 that controls the position of the focus lens 401, a zoom motor 416 that controls the positions of the zoom lenses 402 and 403, an aperture motor 417 that controls opening and closing of the aperture 405, and a focus motor. 415, a CPU 414 that drives a zoom motor 416 and an aperture motor 417, an SCI 413 for communicating with the camera device 20L, the IF 43 described above, and a memory 418.

  The CPU 414 of the slave lens device 10L drives the focus motor 415 and the zoom motor 416 in accordance with the focus position command signal and the zoom position command signal received from the master lens device 10R via the IF 43, and performs focus position control and zoom position control. I do. That is, the slave lens device 10L is controlled by the lens control device 30 via the master lens device 10R.

  The memory 418 stores specification data of the slave lens device 10L.

  The master lens device 10R includes a plurality of types (a plurality of model numbers) of lens devices having different specification data (including at least focal length range data) stored in the memory 118. Any of these lens devices can be used by being mounted on the camera device 20R.

  The slave lens device 10L includes a plurality of types (a plurality of model numbers) of lens devices having different specification data (including at least focal length range data) stored in the memory 418. Any of these lens devices can be used by being mounted on the camera device 20L.

  The operation of the stereoscopic imaging system 100 configured as described above will be described.

  FIG. 4 is a sequence chart for explaining operations of the master lens device 10R and the slave lens device 10L in the stereoscopic imaging system 100 shown in FIG.

  When the user of the stereoscopic imaging system 100 presses a power button (not shown) provided in the lens control device 30, an activation signal is transmitted from the focus controller 31 to the master lens device 10R. The CPU 114 of the master lens device 10R receives this activation signal (step S1) and performs a process of activating the master lens device 10R (step S2).

  When the activation of the master lens device 10R is completed, the CPU 114 of the master lens device 10R transmits an activation signal to the slave lens device 10L (step S3). The CPU 414 of the slave lens device 10L that has received the activation signal performs a process of activating the slave lens device 10L (step S4).

  When the activation of the slave lens device 10L is completed, the CPU 414 of the slave lens device 10L transmits an activation completion signal to the master lens device 10R (step S5). The activation of the master lens device 10R and the activation of the slave lens device 10L may be performed by the user pressing a power button provided on each lens device.

  After the master lens device 10R and the slave lens device 10L are activated, the CPU 114 of the master lens device 10R transmits a specification data transmission request signal for requesting the slave lens device 10L to transmit the specification data (step S6). The CPU 414 of the slave lens device 10L that has received this specification data transmission request signal reads the specification data of the slave lens device 10L stored in the memory 418, and transmits this specification data to the master lens device 10R ( Step S7).

  The CPU 114 of the master lens device 10R that has received the specification data of the slave lens device 10L reads the specification data of the master lens device 10R stored in the memory 118 (step S8).

  Next, the CPU 114 of the master lens device 10R calculates an overlapping range between the specification data of the master lens device 10R and the specification data of the slave lens device 10L (step S9).

  For example, when the focal length range included in the specification data of the master lens device 10R and the focal length range included in the specification data of the slave lens device 10L are as shown in FIG. The CPU 114 of the apparatus 10 </ b> R calculates an overlapping range of these two focal length ranges as a focal length range that can be set in the stereoscopic imaging system 100.

  The CPU 114 of the master lens device 10R calculates a range that can be set in the stereoscopic photographing system 100 for the focus range and the F value range included in the specification data as well as the focal length range.

  Next, the CPU 114 of the master lens device 10R generates information (imaging condition information) indicating the focal length range, the focus range, and the F value range that can be set in the stereoscopic imaging system 100 calculated in step S9. It transmits to camera device 20R, 20L and the lens control apparatus 30 (step S10).

  The camera devices 20R and 20L and the lens control device 30 limit the shooting conditions according to the shooting condition information received from the master lens device 10R.

  In other words, the camera devices 20R and 20L limit the aperture ranges of the apertures 105 and 405 to the range specified by the shooting condition information, and control so that the F value does not exceed this range.

  The focus controller 31 of the lens control device 30 limits the zoom lens position that determines the focal length and the focus lens position that determines the subject distance to a range specified by the shooting condition information, and the zoom lens position and focus that exceed this range. Control so that it does not become a position.

  In order to inform the user of the stereoscopic imaging system 100 that the focal length range, the focus range, and the F value range are limited, a focal length range is displayed on a display device (not shown) connected to the lens control device 30. Information indicating that the focus range and the F value range are limited may be displayed. In addition, the restriction range may be displayed.

  After step S10, the CPU 114 of the master lens device 10R determines the shortest focal length in the focal length range that can be set in the stereoscopic imaging system 100 calculated in step S9 when each of the master lens device 10R and the slave lens device 10L is activated. It is determined as an initial value of the focal length to be set (step S11).

  After determining the initial value, the CPU 114 of the master lens device 10R has a zoom position command signal (a signal for designating a zoom lens position corresponding to the initial value) for moving the zoom lens so that the focal length becomes the initial value. ) Is transmitted to the slave lens device 10L (step S12), and the zoom motor 116 is controlled according to the generated zoom position command signal to a position corresponding to the initial value. The zoom lenses 102 and 103 are moved (step S13).

  The CPU 414 of the slave lens apparatus 10L that has received the zoom position command signal controls the zoom motor 416 according to the zoom position command signal to move the zoom lenses 402 and 403 to the zoom lens position corresponding to the initial value. (Step S14).

  After step S13 and step S14, the master lens device 10R and the slave lens device 10L are each in a shooting standby state.

  After the master lens device 10R and the slave lens device 10L are in a shooting standby state, when there is an operation for shooting (zoom knob operation, focus knob operation) from the user, the focus controller 31 A zoom position command signal and a focus position command signal are transmitted to the master lens device 10R, and zoom control and focus control of the master lens device 10R and the slave lens device 10L are executed.

  As described above, according to the stereoscopic imaging system 100, after the master lens device 10R and the slave lens device 10L are activated (after power is turned on), the zoom lens positions of the master lens device 10R and the slave lens device 10L are at the same focal point. Shooting is possible with the distance set at the WIDE end.

  Accordingly, the user of the stereoscopic imaging system 100 can check the subject with a wide field of view after the master lens device 10R and the slave lens device 10L are activated. It can be performed quickly and stereoscopic shooting can be started smoothly.

  Further, according to the stereoscopic imaging system 100, when the master lens device 10R and the slave lens device 10L are turned off, the master lens device 10R is replaced with a master lens device of another model number, or the slave lens device 10L. Is replaced with a slave lens device of another model number, immediately after activation of the master lens device 10R and the slave lens device 10L, the zoom lens positions of the master lens device and the slave lens device are the respective focal lengths. Shooting is possible with the lens set at the WIDE end that is the shortest focal length in the overlapping range.

  For this reason, regardless of what type of lens device is mounted, stereoscopic shooting can be started smoothly immediately after the activation of the master lens device 10R and the slave lens device 10L.

  Further, according to the stereoscopic imaging system 100, it is possible to use an existing lens device that is commercially available for the slave lens device 10L.

  Some existing lens apparatuses do not store specification data in advance. However, in such a lens device, only the model number information can be acquired by the master lens device 10R from the slave lens device 10L.

  Therefore, if the master lens device 10R has a table for associating the model number information with the specification data, the master lens device 10R can acquire the specification data regardless of the slave lens device 10L. It becomes possible.

  FIG. 6 is a diagram showing a modification of the stereoscopic imaging system 100 shown in FIG.

  The stereoscopic imaging system 200 shown in FIG. 6 is different from the master lens device 10R except that the IF 42 is deleted and an IF 39 as a communication unit for communicating with the slave lens device 10L is added to the focus controller 31. The configuration is the same as that of the stereoscopic photographing system 100 shown in FIG. The IF 39 of the focus controller 31 is connected to the IF 43 of the slave lens device 10L.

  Hereinafter, the operation of the stereoscopic imaging system 200 will be described.

  When the power of the master lens device 10R and the slave lens device 10L is turned on and the master lens device 10R and the slave lens device 10L are activated, the focus controller 31 receives each of the various values from the master lens device 10R and the slave lens device 10L. The original data is acquired, the overlapping range of the two acquired specification data is calculated, and shooting condition information is generated.

  The focus controller 31 transmits the generated shooting condition information to the camera devices 20R and 20L via the master lens device 10R and the slave lens device 10L, and can be operated by the lens control device 30 according to the shooting condition information. Limit the zoom range and focus range. In the camera devices 20R and 20L that have received the shooting condition information, the settable aperture value is limited.

  Next, the focus controller 31 determines the shortest focal length in the focal length range that can be set in the stereoscopic imaging system 200 as an initial value of the focal length to be set when each of the master lens device 10R and the slave lens device 10L is activated. To do. Then, a zoom position command signal for moving the zoom lens to a position corresponding to the initial value is generated, and this zoom position command signal is transmitted to the master lens device 10R and the slave lens device 10L.

  In accordance with the zoom position command signal, the master lens device 10R and the slave lens device 10L move the positions of the respective zoom lenses to positions corresponding to the initial values, and enter a shooting standby state.

  After the master lens device 10R and the slave lens device 10L are in a shooting standby state, when there is an operation for shooting (zoom knob operation, focus knob operation) from the user, the focus controller 31 The zoom position command signal and the focus position command signal are transmitted to the master lens device 10R and the slave lens device 10L, and the zoom control and the focus control of the master lens device 10R and the slave lens device 10L are executed.

  As in the stereoscopic imaging system 200, the master lens device 10R and the slave lens device 10L are activated by using the two specification data and the function of acquiring the respective specification data of the master lens device 10R and the slave lens device 10L. The function of determining the initial value of the focal length of each of the lens device 10R and the slave lens device 10L, and the function of performing the control of moving the zoom lens of each of the master lens device 10R and the slave lens device 10L to obtain the determined initial value By providing the lens control device 30 with the above, it is possible to obtain the same effect as that obtained in the stereoscopic imaging system 100.

  In addition, according to the stereoscopic imaging system 200, an existing lens device that is commercially available can be used for both the master lens device 10R and the slave lens device 10L.

  Some existing lens apparatuses do not store specification data in advance. Even in such a lens device, only the model number information can be acquired from the master lens device 10R and the slave lens device 10L.

  Therefore, if the focus controller 31 has a table associating the model number information with the specification data, the focus controller 31 can acquire the specification data regardless of the lens device.

  In the above description, the master lens device 10R or the focus controller 31 determines the initial focal length of each of the master lens device 10R and the slave lens device 10L as the shortest focal length in the overlapping range of the respective focal length ranges. However, it is not limited to this.

  In the overlapping range of the respective focal length ranges of the master lens device 10R and the slave lens device 10L, the focal length closest to the focal length most frequently set by the lens control device 30 may be set as the initial value.

  For example, in the stereoscopic imaging system 100, a history storage unit that stores the history of the zoom position command signal transmitted to the lens device attached to the camera device 20R is provided in the focus controller 31. Then, the CPU 114 of the master lens device 10R calculates an overlapping range between the focal length range included in the specification data of itself and the focal length range included in the specification data of the slave lens device 10L. Further, the CPU 114 acquires the history of the zoom position command signal stored in the history storage unit from the focus controller 31, and uses this history to set the zoom position (focal length) most frequently set by the lens control device 30. ). The CPU 114 calculates the focal length closest to the most frequently set focal length in the calculated overlapping range (if the most frequently set focal length falls within the overlapping range, the focal length itself) Determine as initial value.

  Alternatively, in the stereoscopic imaging system 200, a history storage unit that stores a history of zoom position command signals transmitted to the lens devices mounted on the camera devices 20R and 20L is provided in the focus controller 31. Then, the focus controller 31 calculates an overlapping range between the focal length range included in the specification data of the master lens device 10R and the focal length range included in the specification data of the slave lens device 10L. Further, the focus controller 31 obtains the history of the zoom position command signal from the history storage unit, and determines the most frequently set zoom position (focal length) using this history. In the calculated overlapping range, the focus controller 31 calculates the focal length closest to the most frequently set focal length (if the most frequently set focal length falls within the overlapping range, the focal length itself). The initial value is determined.

  According to such a configuration, immediately after the activation of the master lens device 10R and the slave lens device 10L, the zoom lens position of each of the lens devices 10R and 10L is the highest among users using the stereoscopic imaging system 100 (200). Since the position is set at or near the frequently used position, stereoscopic shooting can be started in a state familiar to the user, and usability can be improved.

  The master lens device 10R or the focus controller 31 is attached to the camera devices 20R and 20L before the master lens device 10R and the slave lens device 10L are activated in the overlapping range of the focal length ranges of the master lens device 10R and the slave lens device 10L. The focal length closest to the focal length (the latest focal length set by the focus controller 31) set for the lens apparatus that has been set may be used as the initial value.

  For example, in the stereoscopic imaging system 100, the history of the zoom position command signal transmitted to the lens device mounted on the camera device 20R in the focus controller 31 (at least immediately before the master lens device 10R and the slave lens device 10L are turned off). A history storage unit is provided for storing (including the set zoom position command signal). Then, the CPU 114 of the master lens device 10R calculates an overlapping range between the focal length range included in the specification data of the master lens device 10R and the focal length range included in the specification data of the slave lens device 10L. Further, the CPU 114 acquires a history of zoom position command signals from the focus controller 31, and uses this history to determine the zoom position (focal length) set immediately before the master lens device 10R and the slave lens device 10L are activated. To do. In the calculated overlapping range, the CPU 114 has a focal length closest to the focal length set immediately before the activation of the master lens device 10R and the slave lens device 10L (set immediately before the activation of the master lens device 10R and the slave lens device 10L). If the focal length falls within the overlapping range, the focal length itself is determined as the initial value.

  Alternatively, in the stereoscopic imaging system 200, the history of the zoom position command signal transmitted to the lens devices mounted on the camera devices 20R and 20L in the focus controller 31 (at least the master lens device 10R and the slave lens device 10L are turned off) A history storage unit is provided for storing the zoom position command signal set immediately before. Then, the focus controller 31 calculates an overlapping range between the focal length range included in the specification data of the master lens device 10R and the focal length range included in the specification data of the slave lens device 10L. Further, the focus controller 31 acquires the history of the zoom position command signal from the history storage unit, and using this history, the zoom position (focal length) set immediately before the master lens device 10R and the slave lens device 10L are activated. ). In the calculated overlapping range, the focus controller 31 has a focal length closest to the focal length set immediately before the activation of the master lens device 10R and the slave lens device 10L (set immediately before the activation of the master lens device 10R and the slave lens device 10L). If the set focal length falls within the overlapping range, the focal length itself is determined as the initial value.

  According to such a configuration, immediately after the master lens device 10R and the slave lens device 10L are activated, the zoom lens positions of the lens devices 10R and 10L are set immediately before the master lens device 10R and the slave lens device 10L are activated. Since the position is set to the position closest to the position that has been set, the user of the stereoscopic imaging system turns off the power of the master lens device 10R and the slave lens device 10L and replaces the lens device, and then the master lens device 10R and the slave Even when the imaging of the lens device 10L is turned on and the imaging is resumed, the imaging can be resumed from the state before the lens device replacement, and the usability can be improved.

  As described above, the following items are disclosed in this specification.

  The disclosed lens control system includes a lens apparatus in a stereoscopic imaging system that generates stereoscopic video data using two image data obtained by imaging each of two camera apparatuses to which a lens apparatus including a zoom lens can be attached and detached. The two camera devices can be mounted with different types of lens devices having different specifications including a focal length range, and two camera devices mounted on the two camera devices can be mounted on the two camera devices. At the time of starting up the lens device, the specification data acquisition unit for acquiring the specification data indicating the specification of each of the two lens devices and the two specification data acquired by the specification data acquisition unit are used. A starting focal length determining unit that determines a starting focal length to be set when each of the two lens devices is started, and each of the two lens devices. A zoom lens position control unit at startup for performing control to move the zoom lens to a position corresponding to the focal length at startup, and the two lens devices at which the zoom lens is moved to a position corresponding to the focal length at startup A lens control device for controlling the lens.

  In the disclosed lens control system, the startup focal length determination unit calculates an overlapping range of the focal length range data included in each of the two specification data, and the startup focal length in the overlapping range Is to determine.

  In the disclosed lens control system, the starting focal length determination unit determines the shortest focal length in the overlapping range as the starting focal length.

  The disclosed lens control system includes a history storage unit that stores a control history of the zoom lens of the lens device by the lens control device, and the startup focal length determination unit is set most frequently by the lens control device. The focal length of the lens device is determined based on the control history, and the focal length closest to the focal length in the overlapping range is determined as the starting focal length.

  The disclosed lens control system includes a history storage unit that stores a control history of the zoom lens of the lens device by the lens control device, and the startup focal length determination unit is configured to use the two lens by the lens control device. The focal distance set before the apparatus is activated is determined based on the control history, and the focal distance closest to the focal distance in the overlapping range is determined as the activation focal distance.

  The disclosed lens control system is a first lens device that can be attached to one of the two camera devices, and a second lens device and the lens control device that are attached to the other of the two camera devices. A first lens device having a communication unit for communicating, wherein the lens control device controls the second lens device via the first lens device; Comprises the specification data acquisition unit, the startup focal length determination unit, and the startup zoom lens position control unit.

  In the disclosed lens control system, the lens control device includes a communication unit for communicating independently with the two lens devices, the specification data acquisition unit, the startup focal length determination unit, and the startup. And a zoom lens position control unit.

10R Master lens device 10L Slave lens device 20R, 20L Camera device 30 Lens control device 114 CPU

Claims (7)

A lens control system for controlling the lens device in a stereoscopic photographing system that generates stereoscopic video data using two image data obtained by photographing each of two camera devices to which a lens device including a zoom lens can be attached and detached. And
The two camera devices can be mounted with another type of lens device having different specifications including the focal length range,
A specification data acquisition unit that acquires specification data indicating the specifications of each of the two lens devices when the two lens devices mounted on the two camera devices are activated;
Using the two pieces of specification data acquired by the specification data acquisition unit, a starting focal length determination unit that determines a starting focal length to be set when starting each of the two lens devices;
A startup zoom lens position control unit that performs control to move each zoom lens of the two lens devices to a position corresponding to the startup focal length;
A lens control system comprising: a lens control device that controls the two lens devices in which the zoom lens is moved to a position corresponding to the starting focal length. The lens control system according to claim 1,
The starting focal length determination unit calculates an overlapping range of the focal length range data included in each of the two specification data, and determines the starting focal length in the overlapping range. The lens control system according to claim 2,
The starting focal length determination unit is a lens control system that determines the shortest focal length in the overlapping range as the starting focal length. The lens control system according to claim 2,
A history storage unit for storing a control history of the zoom lens of the lens device by the lens control device;
The starting focal length determination unit determines the focal length of the lens device that is most frequently set by the lens control device based on the control history, and determines the focal length closest to the focal length in the overlapping range, A lens control system for determining the starting focal length. The lens control system according to claim 2,
A history storage unit for storing a control history of the zoom lens of the lens device by the lens control device;
The starting focal length determination unit determines a focal length set by the lens control device before starting the two lens devices based on the control history, and a focal point closest to the focal length in the overlapping range. A lens control system for determining a distance as the starting focal length. The lens control system according to any one of claims 1 to 5,
A first lens device that can be attached to one of the two camera devices, the second lens device attached to the other of the two camera devices, and a communication unit for communicating with the lens control device. Comprising a first lens device;
The lens control device controls the second lens device via the first lens device,
The first lens device is a lens control system including the specification data acquisition unit, the startup focal length determination unit, and the startup zoom lens position control unit. The lens control system according to any one of claims 1 to 5,
The lens control device includes a communication unit for communicating independently with the two lens devices, the specification data acquisition unit, the focal length determination unit, and the startup zoom lens position control unit. Control system.

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