JP2011043583A - Lens device - Google Patents

Abstract

Provided is an imaging system that can keep a zoom shot state in a completed state by zoom lens operation by a view angle correction function when the zoom shot is completed.
A lens device that drives zoom and focus according to a command signal, a plurality of storage units that store command values for the lens device, a plurality of selection units that correspond to each storage unit, and a unit that corresponds to each selection unit A command system having a plurality of status display means, and by selecting one selection means, the command value stored in the corresponding storage unit is transmitted to the lens apparatus, The zoom is driven based on the value, and each of the state display means displays the first display while the zoom is driven according to the command value, and displays the second display while the zoom is driven to the command value. The third display is displayed in a zoom state other than that, and after the command device transmits the command value to the lens device, the state of the lens device is determined, and the state display means is changed to the third display based on the determination. To do.
[Selection] Figure 1

Description

  The present invention relates to an optical device using a television lens, a video lens, and the like, and a photographing device using them.

  Various methods can be used for television and video shooting. One of them is a shooting method in which a subject is changed to a different zoom magnification while the subject is being shot at a certain zoom magnification, and shooting is continued again at the original zoom magnification. is there.

  Conventionally, in order to take this kind of photographing technique, as disclosed in Patent Document 1, an arbitrary zoom lens position is stored in advance, and it is automatically driven to the storage position by an input from a photographing switch or the like. A function (hereinafter referred to as a shot function) is known.

  Although the shot function may control not only the zoom but also focus, iris, and the like, the zoom shot function (hereinafter, zoom shot) will be described below.

  For zoom shots, a method using a shot box is disclosed in Patent Document 1. By storing the zoom position in the preset unit in the shot box in advance and switching to the preset zoom position during shooting, an intended video shooting can be obtained instantaneously.

  On the other hand, the lens apparatus disclosed in Patent Document 2 is equipped with an angle-of-view correction function that automatically drives a zoom lens in order to correct a change in angle of view during focus driving. This angle of view correction function enables focus adjustment without the photographer being aware of changes in the angle of view.

  In the shot box disclosed in Patent Document 3, the input switch is provided with an LED indicating the ON / OFF state of the switch, and the shot state is displayed. The LED, which is a means for notifying the state of the shot, indicates the state of the shot such as driving and completion of the zoom shot, so that the operator can easily check the state of the shot during photographing.

  Here, the shot state will be described. The shot state is roughly classified into three states: an operation state, a completion state, and a normal state. In each shot state, the LED blinks in the operating state, lights up in the completed state, and turns off in the normal state.

  The operation state indicates a state in which the zoom lens is driven by shot execution. The completed state is a state where the zoom lens is stopped at the storage position by the zoom shot. The normal state is a state during or after a zoom operation by an operation means other than a zoom shot such as a zoom demand, or a state in which the zoom lens position is unrelated to the zoom shot.

  In this way, by notifying the operator of the shot state and the zoom lens position by the zoom shot, the operator can quickly grasp the current lens driving state and the zoom lens position. In addition, the next shot position to be executed can be easily determined, and a smooth zoom operation including a zoom shot can be performed.

JP 2001-074999 A JP 2001-042198 A JP 2001-125162 A

  In an imaging system having a shot function having a completion state as described above, when the zoom position is changed by the angle of view correction function in the zoom shot completion state, the shot state transitions to the normal state.

When the zoom lens position is changed by the angle-of-view correction function after driving to the zoom position stored in advance by the zoom shot and stopping, the zoom position is changed to the actual zoom position. Differences occur.
Since the change in the zoom position of the zoom lens by the angle of view correction function is also included in operations other than the zoom shot, the shot state shifts to the normal state. That is, after the zoom shot is completed, the zoom state is shifted to the normal state even though the zoom is not consciously driven. For this reason, the LED which is the shot state notification means is turned off, and there is a problem that it is difficult to determine the current zoom position and the next shot position.

After zoom shots are complete, focus adjustments are often made by subtle changes in subject distance. From the operator's point of view, since it is a focus-only operation, the shot completion state is maintained, and it is natural that the LED that is the shot state notification means continues to be lit. Therefore, it is desirable not to update the shot state depending on the change in the position of the zoom lens by the angle of view correction function.
Therefore, when detecting a change in the zoom lens position, it is necessary to identify whether the zoom is moved by the angle-of-view correction function or whether the zoom is operated intentionally.

  Further, in a lens system provided with a zoom operation device in addition to the shot box, there is a possibility that the zoom operation may be performed during field angle correction. Therefore, if a change in the zoom lens position that exceeds the maximum change amount of the zoom lens position (maximum angle of view correction amount) by the angle of view correction function is detected, it is determined that there was a zoom operation other than the angle of view correction function, and the shot state Must be moved to the normal state.

  The angle of view correction is to correct a change in the angle of view caused by the movement of the focus lens when the focus is moved by moving the zoom lens so that the angle of view is not changed by the focus operation. The maximum amount of movement of the zoom lens driven at the time of field angle correction depends on the focal length of the zoom lens. When the zoom position is at the telephoto end, the amount of movement of the zoom lens for field angle correction is maximized when the focus is driven infinitely from the nearest position. The focal length when the zoom position is at the telephoto end varies depending on the lens type. The amount of movement of the zoom lens at the time of field angle correction differs depending on the zoom position.

  Accordingly, since the maximum movement amount at the time of field angle correction differs depending on the focal length of the lens connected to the shot box, it is necessary to transmit / receive the maximum movement amount of the zoom lens for field angle correction to / from the zoom lens.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an imaging system that can keep the zoom shot state in the completed state by the zoom lens operation by the angle-of-view correction function when the zoom shot is completed, taking into consideration the above-mentioned various conditions. .

  In order to achieve the above object, an imaging system of the present invention includes a plurality of storage units that store command values to the lens device, a plurality of selection units corresponding to the storage units, and a selection unit. A command device having a plurality of corresponding status display means and a lens device capable of driving zoom and focus are stored in a corresponding storage unit by selecting one of the selection means. The command value is transmitted to the lens device, and the lens device can drive zooming based on the command value, and each of the plurality of status display means zooms according to the corresponding command value. The first display is displayed while the zoom is driven, the second display is displayed in a state where the zoom is driven to the corresponding command value, and the third display is displayed in the other zoom states. The command value is sent to the lens device. After signal, it determines the state of the lens apparatus, based on the determination, changing the status display means in the third display, characterized in that.

  According to the present invention, when the zoom position is changed after completion of the shot, it is possible to recognize whether it is due to the correction driving of the angle of view correction function or due to the zoom operation of the operator. Accordingly, it is possible to provide an imaging system that can correctly maintain the shot state after the completion of the shot in the completed state.

It is a block diagram showing the structure of Examples 1-4 of this invention. 1 is a conceptual diagram of Example 1. FIG. It is the communication data between the lens-shot box used in Example 1. FIG. 3 is a flowchart when a lens used in Example 1 is connected to a shot box. 5 is a flowchart of a lens and a shot box from execution to completion of a zoom shot used in Examples 1 to 4. 6 is a flowchart at the time of angle of view correction from the completion of the zoom shot according to the first exemplary embodiment. It is a conceptual diagram of Examples 2-3. This is field angle correction data used in the second embodiment. 10 is a flowchart of transmission / reception of angle-of-view correction data between a lens and a shot box used in Embodiment 2. It is the communication data between the lens-shot box used in Example 2. FIG. It is a flowchart at the time of the connection of the lens used in Examples 2-4 and a shot box. 10 is a flowchart at the time of field angle correction after zoom shot completion according to the second exemplary embodiment. It is the communication data between the lens-shot box used in Example 3. FIG. 12 is a flowchart at the time of field angle correction after zoom shot completion according to the third exemplary embodiment. FIG. 9 is a conceptual diagram of Example 4. It is the communication data between the lens-shot box used in Example 4. FIG. FIG. 10 is a flowchart at the time of field angle correction after zoom shot completion according to Embodiment 4. FIG.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  The imaging system of the first embodiment of the present invention will be described below with reference to FIGS.

  FIG. 1 is a functional block diagram of the photographing system of this embodiment. The imaging system includes a lens apparatus 100, a shot box 200, and a zoom demand 300. The lens apparatus 100 mainly includes a focus lens 101, a zoom lens 102, a calculation unit 107, a communication unit 108, and a field angle correction unit 109. The focus lens 101 is a lens that changes the object distance, and the zoom lens 102 is a lens that changes the focal distance. A focus drive unit 103 and a focus position detection unit 104 are connected to the focus lens 101, and a zoom drive unit 105 and a zoom position detection unit 106 are connected to the zoom lens 102. The position signals detected by these position detection units are output to the calculation unit 107 and the angle of view correction unit 109.

  The arithmetic unit 107 outputs a driving signal to the focus driving unit 103 to drive the focus lens 101, and outputs a driving signal to the zoom driving unit 105 to drive the zoom lens 102. Further, the angle of view data is output to the communication unit 108.

  The communication unit 108 communicates with the shot box 200. The view angle data is transmitted to the shot box 200, and the zoom shot command signal received from the shot box 200 and the view angle request signal are output to the calculation unit 107. Further, when the zoom shot is completed, zoom shot completion angle of view data is output to the shot box 200.

  The angle-of-view correction unit 109 calculates the angle of view from the focus lens and zoom lens position signals, and calculates the zoom position change amount and angle-of-view data for correcting the angle-of-view change due to the change of the position signal of the focus lens 101. Output to the unit 107. The angle of view data is calculated from the positions of the zoom lens 102 and the focus lens 101.

  The shot box 200 includes input switches 201a to 201c, which are a plurality of selection means, a calculation unit 202, a storage unit 203, a communication unit 204, a storage switch 205, a plurality of display units (status display units) 206a to 206c, and a focus operation unit 207. Consists of The input switches 201a to 201c are switches that switch between ON and OFF. When the input switches 201a to 201c are switched to ON, a switch command signal is output to the arithmetic unit 202. The calculation unit 202 reads the zoom shot command position corresponding to the input switch command signal from the storage unit 203 and outputs the zoom shot command signal to the communication unit 204 as a zoom shot command signal. The storage unit 203 is a memory that stores a command position that is a command value of a zoom shot associated with each switch of the input switches 201 (a to c) and angle-of-view data when the zoom shot is completed. The communication unit 204 communicates with the lens device 100. An angle-of-view request signal for requesting zoom lens position data is output to the lens apparatus 100, and the angle-of-view data and zoom shot completion angle-of-view data are received from the lens apparatus 100. The received view angle data is output to the calculation unit 202, and zoom shot completion view angle data is output to the storage unit 203. The storage switch 205 is a storage mode changeover switch. When the storage switch 205 is ON, the shot box 200 is in the storage mode, and when it is OFF, the shot box 200 is in the photographing mode. When the input switches 201a to 201c are pressed in the storage mode, the shot box 200 stores the zoom lens position data in the storage unit 203 in association with the pressed input switches 201a to 201c.

  When the input switches 201a to 201c are pressed in the shooting mode, a zoom shot command signal is output to the calculation unit 202 and a zoom shot is executed. The display units 206a to 206c are shot state notification means, and are LEDs attached to the respective switches of the input switches 201a to 201c. The calculation unit 202 blinks (first display) during the shot operation, lights up (second display) when the shot is completed, and turns off (third display) otherwise, and displays the state according to the lighting state. The focus operation unit 207 outputs a focus command signal to the communication unit 204 when operated by the operator. The zoom demand 300 includes a zoom operation unit 301 and a communication unit 302. When operated by the operator, the zoom operation unit 301 outputs a zoom command signal to the communication unit 302. The communication unit 302 communicates with the lens device 100. The input zoom command signal is output to the lens device.

FIG. 2 is a diagram illustrating the state transition of the zoom shot while the position of the zoom lens is changed by the angle of view correction from the completion of the zoom shot in the present embodiment.
FIG. 2A shows a state in which when the focus operation is performed in a state where the zoom lens is at the position 21 when the zoom shot is completed, the angle of view is corrected and the zoom lens is moved to the position 22. Further, after the angle of view is corrected, the zoom lens is driven from the position 22 to the position 23 in accordance with a command from the zoom demand 300.

  In FIG. 2B, the field angles corresponding to the positions 21, 22, and 23 of the zoom lens in FIG. 2A, the zoom shot state, and the field angles recorded in the storage unit 203 as the field angles at the completion of the zoom shot. , And the state of focus. Further, the zoom lens moves in time series in the order of positions 21, 22, and 23. The angle of view is an angle of view calculated by the angle of view correction unit 109 of the lens apparatus 100. The zoom shot state indicates a completed state in which the zoom lens is stopped at the storage position due to the zoom shot, a normal state in which the zoom lens position is not related to the zoom shot, or during a zoom operation by an operation means other than the zoom shot. . The angle of view when the zoom shot is completed is an angle of view transmitted from the lens apparatus 100 when the zoom shot is completed, and is an angle of view stored in the storage unit 203.

  Since the angle of view correction function corrects the angle of view to a constant value, the angle of view is the same at 21 and 22 in FIG. 2B, and the zoom lens has the same value α at positions 21 and 22. In the zoom lens position 23, it is shown that the angle of view changes to β by the zoom operation.

  In this embodiment, the transition of the shot state when the zoom lens moves from the position 21 at the completion of the zoom shot in FIG. 2A to the position 22 after the angle of view correction will be described.

  FIG. 3 is a simplified communication flow between the lens apparatus 100 and the shot box 200 in the present embodiment. The view angle request signal shown in FIG. 3 is a signal for requesting the view angle transmitted from the shot box 200 to the lens apparatus 100. The angle of view data is data calculated by the angle of view correction unit 109 and transmitted from the lens apparatus 100 to the shot box 200 in response to the angle of view request signal. The zoom shot command signal is a zoom shot drive command transmitted from the shot box 200 to the lens apparatus 100 in response to input of the input switches 201 (a to c) of the shot box 200. The zoom shot completion field angle data is a zoom shot completion notification transmitted from the lens apparatus 100 to the shot box 200 when the zoom shot is completed.

FIG. 3A shows a simplified flow of transmission / reception of a view angle request signal and view angle data, and FIG. 3B shows a simplified flow of transmission / reception of a zoom shot command signal and zoom shot completion view angle data.
In FIG. 3A, the view angle request signal is data that is transmitted and received while the lens apparatus 100 and the shot box 200 are connected, and is composed of the view angle read command “zz”. When the lens apparatus 100 detects the field angle read command “zz” of the field angle request signal, the field angle correction unit 109 calculates the field angle and adds the field angle “cz” to the field angle read command “zz”. The angle of view data is returned to the shot box 200.

  In FIG. 3B, the zoom shot command signal includes a zoom lens position read command “zs” and a zoom shot command position “aa”. When the input switches 201 (ac) in FIG. 1 are input, the shot box 200 adds the zoom shot command position “aa” to the zoom lens position read command “zs”, and sends the zoom shot command signal to the lens device 100. Send. When detecting the zoom lens position read command “zs”, the lens apparatus 100 drives the zoom lens 102 to the zoom shot command position “aa”. When the zoom lens 102 reaches “aa”, the angle of view correction unit 109 calculates the angle of view, and zoom shot completion angle of view data obtained by adding the angle of view “cz” to the zoom lens position read command “zs” is shot box. Reply to 200.

FIG. 4 is a flowchart of transmission / reception of zoom data performed between the lens apparatus 100 and the shot box 200.
First, the process of the shot box 200 will be described. When the shot box 200 is connected to the lens in step S401, the process proceeds to step S402, transmits an angle-of-view request signal to the lens apparatus 100, and proceeds to step S403. In step S403, it is determined whether or not the angle of view data is returned from the lens apparatus 100. If there is a reply, the process proceeds to step S404, and if not, the process returns to step S403.

  Next, processing of the lens apparatus 100 will be described. When the lens apparatus 100 is connected to the shot box 200 in step S405, the process proceeds to step S406. In step S406, it is determined whether or not there is a view angle request signal from the shot box 200. If there is a request, the process proceeds to step S407, and if not, the process returns to step S406. In step S407, the view angle data calculated by the view angle correction unit 109 is returned to the shot box 200, and the process proceeds to step S408.

  FIG. 5 is a flowchart of transmission / reception of a zoom shot command signal and zoom shot completion angle-of-view data performed between the lens apparatus 100 and the shot box 200 during zoom shot processing by input of the input switches 201 (ac).

  First, the process of the shot box 200 will be described. When the switch 201a of the shot box 200 in which the zoom lens position is stored in advance in step S501 is input, the process proceeds to step S502. In step S502, a zoom shot command signal is transmitted to the lens apparatus 100 so as to drive the zoom lens 102 to the storage position (aaa), and the process proceeds to step S503. In step S503, it is determined whether or not the angle of view data is returned from the lens apparatus 100. If there is a reply, the process returns to step S504, and if not, the process returns to step S503. In step S504, the angle of view received from the lens apparatus 100 is stored in the storage unit 203, and the process proceeds to step S505 to complete the zoom shot state.

  Next, processing of the lens apparatus 100 will be described. When a zoom shot command signal is received from the shot box 200 in step S506, the process proceeds to step S507, the zoom lens 102 is driven, and the process proceeds to step S508. In step S508, it is determined whether the command position has been reached. If so, the process proceeds to step S509, and if not, the process returns to step S507. In step S509, zoom shot completion view angle data is returned to the shot box 200 indicating that the command position has been reached, and the process proceeds to step S510.

  FIG. 6 is a flowchart of the lens apparatus 100 and the shot box 200 when the zoom lens 102 moves from the completion position 21 to the zoom lens position 22 after the field angle correction.

  First, processing in the shot box 200 will be described. In step S601, the display unit 206 is turned on, and the process proceeds to step S602. In step S602, an angle-of-view request signal is transmitted to the lens apparatus 100, and the process proceeds to step S603. In step S603, it is determined whether field angle data is received from the lens apparatus 100, and if there is, the process proceeds to step S604, and if not, the process returns to step S603. In step S604, the angle of view stored in step S504 is compared with the angle of view received in step S603. If there is a change, the process proceeds to step S605, and if not, the process proceeds to step S606. In step S605, the zoom shot completion state is set to the normal state, that is, the display units 206 (ac) are turned off, and the process proceeds to step S606.

  Next, processing of the lens apparatus 100 will be described. If there is a request for zoom data from the shot box 200 in step S607, the process proceeds to step S608, the field angle data is returned, and then the process proceeds to step S609. If it will be in a normal state by step S606, the display part 206 (ac) will turn off.

  As described above, the angle of view data is transmitted and received between the lens apparatus 100 and the shot box 200, and the shot state is updated by the change of the angle of view in the shot box 200, so that the LED can be kept on during the angle of view correction function.

In this embodiment, the configuration of the view angle data and the zoom shot completion view angle data as shown in FIG. 3 is used between the lens apparatus 100 and the shot box 200. However, the present invention is not limited to the configuration of FIG. If it is.
Further, although the LED is used as the shot state notifying means, any device can be used as long as the operator can easily confirm the shot state.

  Hereinafter, an imaging system according to the second embodiment of the present invention will be described with reference to FIGS. The same functional configuration as that of the first embodiment in FIGS. 1 and 5 is denoted by the same reference numeral, and description thereof is omitted.

  The arithmetic unit 107 in FIG. 1 outputs the zoom lens position, not the angle of view, and the maximum angle of view correction amount, which is the maximum amount of movement of the zoom lens 102 moved by the angle of view correction, to the communication unit 108. Different from the first embodiment. The storage unit 203 in FIG. 1 is different from the first embodiment in that it stores not the angle of view but the zoom lens position when the zoom shot is completed.

  FIG. 7 is a diagram illustrating the state transition of the zoom shot according to the change of the zoom lens position by the field angle correction from the completion of the zoom shot in the present embodiment.

  In FIG. 7A, in the state where the zoom lens is at the position 71 when the zoom shot is completed, the angle of view is corrected and the zoom lens is moved to the position 72. After the angle of view is corrected, the zoom operation is performed and the zoom lens is positioned. 73 shows the state of movement.

  In FIG. 7B, the zoom lens recorded in the storage unit 203 as the zoom lens position, the zoom shot state, and the zoom lens position at the completion of the zoom shot corresponding to the positions 71 to 73 of the zoom lens in FIG. The position and the focus state are shown. Further, the zoom lens moves in time series in the order of positions 71, 72, 73.

  FIG. 7A shows a maximum field angle correction amount 74 zoom shot completion threshold 75. The zoom shot completion threshold 75 is a threshold for transitioning the shot state to the normal state when a change in the position of the zoom lens exceeding the zoom shot completion threshold 75 is detected by another operating means in the zoom shot completion state. It is assumed that the zoom shot completion threshold 75 is stored in advance in the storage unit 203 in the shot box 200.

FIG. 8 is a simplified communication flow between the lens apparatus 100 and the shot box 200 in the present embodiment.
The view angle correction data request signal shown in FIG. 8 is transmitted from the shot box 200 to the lens device 100 once when the lens device 100 and the shot box 200 are connected, and is composed of a view angle correction read command. The view angle correction data is data returned from the lens apparatus 100 to the shot box 200 in response to the view angle correction data request signal, and includes a view angle correction read command and a maximum angle of view correction amount.

  In FIG. 8, the view angle correction read command is “cn” and is transmitted from the shot box 200 to the lens apparatus 100. When the lens apparatus 100 detects the view angle correction read command “cn”, it returns the view angle correction data with the maximum view angle correction amount “xxx” to the shot box 200.

  FIG. 9 is a flowchart when the lens apparatus 100 and the shot box 200 are connected in the present embodiment.

  First, processing of the shot box 200 will be described. When the shot box 200 is connected to the lens apparatus 100 in step S901 and the shot box 200 recognizes the lens apparatus 100, the process proceeds to step S902. In step S902, an angle-of-view correction data request signal is transmitted to the lens apparatus 100, and the process proceeds to step S903. In step S903, it is determined whether or not the angle of view correction data is returned from the lens apparatus 100. If there is a reply, the process proceeds to step S904, and if not, the process returns to step S903. In step S904, the maximum field angle correction amount of the field angle correction data received from the lens apparatus 100 is stored in the storage unit 203, and the process proceeds to step S905.

  Next, processing of the lens apparatus 100 will be described. When connected to the shot box 200 in step S906, the process proceeds to step S907. In step S907, the angle of view correction data is returned to the shot box 200, and the process proceeds to step S908.

  As described above, the shot box 200 can have a maximum field angle correction amount corresponding to the connected lens apparatus 100, that is, an allowable range that does not shift to a normal state even if the zoom lens is driven by the field angle correction function after the zoom shot is completed. .

  FIG. 10 is a simplified communication flow between the lens apparatus 100 and the shot box 200 in the present embodiment.

  The zoom lens position request signal in FIG. 10A includes a zoom lens position read command “zz”. The zoom lens position data includes a zoom lens position data read command “zz” and a zoom lens position “aa”. The shot box 200 transmits a zoom lens position request signal to the lens apparatus 100. When the lens apparatus 100 detects the zoom lens position read command “zz”, it returns zoom lens position data with the zoom lens position “aa” to the shot box 200.

  The focus lens position request signal in FIG. 10B includes a focus lens position read command “ff”. The focus lens position data includes a focus lens position data read command “ff” and a focus lens position “dd”. The shot box 200 transmits a focus lens position request signal to the lens apparatus 100. When the lens apparatus 100 detects the focus lens position data read command “ff”, it returns the focus lens position data with the focus lens position “dd” to the shot box 200.

  The zoom shot command signal in FIG. 10C includes a zoom shot completion position read command “zs” and a zoom shot command position, and the zoom shot completion position data includes a zoom shot completion position read command “zs” and a zoom shot completion. It consists of the zoom lens position “aa” at the time.

  When the input switches 201 (a to c) in FIG. 1 are input, the shot box 200 adds the zoom shot command position “aa” to the zoom shot position read command “zs” and sends the zoom shot command signal to the lens apparatus 100. Send. When detecting the zoom shot position read command “zs”, the lens apparatus 100 drives the zoom lens 102 to the zoom shot command position “aa”. When the zoom lens 102 reaches “aa”, zoom shot completion position data in which the zoom lens position “aa” is added to the zoom shot position read command “zs” is returned to the shot box 200.

  In this embodiment, the zoom lens position request signal and zoom lens position data shown in FIG. 10A are always transmitted and received between the lens apparatus 100 and the shot box 200 according to the flowchart of FIG.

  That is, in the shot box 200, when connected to the lens in step S1101, the process proceeds to step S1102, transmits a zoom lens position request signal to the lens apparatus 100, and proceeds to step S1103. In step S1103, it is determined whether or not a zoom lens position data is returned from the lens apparatus 100. If there is a reply, the process proceeds to step S1104, and if not, the process returns to step S1103.

  Next, when the lens apparatus 100 is connected to the shot box 200 in step S1105, the process proceeds to step S1106. In step S1106, it is determined whether or not there is a zoom lens position request signal from the shot box 200. If there is a request, the process proceeds to step S1107, and if not, the process returns to step S1106. In step S1107, the zoom lens position data is returned to the shot box 200, and the process proceeds to step S1108.

It is assumed that the focus lens position request signal and the focus lens position data shown in FIG.
After executing the zoom shot, the zoom shot command signal and zoom shot completion position data shown in FIG. 10C are transmitted and received according to the flowchart of FIG. 5, and the zoom shot is completed at the position 71 shown in FIG. And The shot box 200 stores the zoom lens position of the zoom shot completion position data from the lens apparatus 100 in the storage unit 203.

  FIG. 12 is a flowchart of the lens apparatus 100 and the shot box 200 when the zoom lens 102 moves from the position 71 when the zoom shot is completed to the position 72 after the angle of view correction.

  First, processing in the shot box 200 will be described. When the zoom shot is completed in step S1201, the process proceeds to step S1202, the zoom lens position request signal and the focus lens position request signal in FIG. 10 are transmitted to the lens apparatus 100, and the process proceeds to step S1203. In step S1203, the presence / absence of a change in the focus position is determined from the focus lens position data of the lens apparatus 100. If there is a change, the process proceeds to step S1205, and if there is no change, the process proceeds to step S1204. In step S1204, it is determined from zoom lens position data of the lens apparatus 100 whether there is a change in zoom position. If there is a change, the process proceeds to step S1207, and if there is no change, the process proceeds to step S1208. In step S1205, it is determined whether the change in the zoom lens position is greater than or equal to the maximum field angle correction amount. If the change in the zoom lens position is greater than or equal to the maximum field angle correction amount, the process proceeds to step S1207. . In step S1206, the zoom shot completion position in FIG. 7A is updated to the zoom lens position in FIG. 10, and the process proceeds to step S1208. In step S1207, the shot state is changed to the normal state, the LED of the display unit 206 is turned off, and the process proceeds to step S1208.

  Next, processing of the lens apparatus 100 will be described. When the zoom lens position request signal and the focus lens position request signal are received from the shot box in step S1209, the process proceeds to step S1210. In step S1210, the zoom lens position data and focus lens position data of FIG. 10 are returned to the shot box 200, and the process proceeds to step S1211.

  As described above, when the lens and the shot box are connected, the maximum angle of view correction amount of the zoom lens possessed by the lens is notified to the shot box, so that the maximum angle of view correction amount of the zoom lens different for each lens can be handled.

  In this embodiment, a method of transmitting and receiving the maximum field angle correction amount of the zoom lens when the lens and the shot box are connected is used. However, the shot box may have a predetermined maximum field angle correction amount for each lens type in advance, and may be selected according to the type of lens connected.

  Hereinafter, an imaging system according to a third embodiment of the present invention will be described with reference to FIGS. 1, 5, 7, 11, and 13 to 14. The same functional configurations as those of the first and second embodiments in FIGS. 1, 5, and 7 are denoted by the same reference numerals, and description thereof is omitted.

  In the lens apparatus 100 of FIG. 1, the maximum angle of view correction amount is always calculated by the angle of view correction unit 109 according to the position of the zoom lens 102. Further, the difference is that the calculated maximum field angle correction amount is output to the shot box 200 by the communication unit 108.

  The calculation unit 107 in FIG. 1 outputs the zoom lens position instead of the angle of view to the communication unit 108, and the storage unit 203 stores the zoom lens position instead of the angle of view when the zoom shot is completed. It is the same.

  The conceptual diagram of the present embodiment can be shown in FIG.

  FIG. 13 is a simplified communication flow between the lens apparatus 100 and the shot box 200 in the present embodiment. In FIG. 13, the zoom lens position request signal, the zoom lens position data, and the zoom shot command signal have the same configuration as that used in the second embodiment. The zoom shot completion position data includes the zoom shot position read command “zs”, the zoom shot completion position “aa”, and the maximum field angle correction amount “cm” at the zoom shot completion position “aa” calculated by the field angle correction unit 109. ".

FIG. 13A shows a simplified flow of transmission / reception of a zoom lens position request signal and zoom lens position data, and FIG. 13B shows a simplified flow of transmission / reception of a zoom shot command signal and zoom shot completion position data.
In FIG. 13A, the flow of transmission / reception of the zoom lens position request signal and zoom lens position data is the same as that of FIG. 10A used in the second embodiment.

  In FIG. 13B, when the input switches (a to c) in FIG. 1 are input, the shot box 200 displays a zoom shot command signal obtained by adding the zoom shot command position “aa” to the zoom shot position read command “zs”. Is transmitted to the lens apparatus 100. When detecting the zoom shot position read command “zs”, the lens apparatus 100 drives the zoom lens 102 to the zoom shot command position “aa”. When the zoom lens 102 reaches “aa”, the field angle correction unit 109 calculates the maximum field angle correction amount at the zoom lens position “aa”. When the maximum field angle correction amount is calculated, zoom shot completion position data with the zoom lens position “aa” and the calculated maximum field angle correction amount “cm” added to the identification data “zs” is returned to the shot box 200.

  While the lens apparatus 100 and the shot box 200 are connected, the zoom lens position request signal and zoom lens position data shown in FIG. 13A are transmitted and received according to the flowchart of FIG.

  When executing the zoom shot, the zoom shot command signal and zoom shot completion position data shown in FIG. 13B are transmitted and received according to the flowchart of FIG.

  FIG. 14 is a flowchart of the lens apparatus 100 and the shot box 200 when the zoom lens 102 moves from the position 71 when the zoom shot is completed in FIG. 7 to the position 72 after the angle of view correction.

  First, processing in the shot box 200 will be described. When the zoom shot is completed in step S1401, the process proceeds to step S1402. In step S1402, the lens apparatus 100 is requested for a zoom lens position request signal, and the process proceeds to step S1403. In step S1403, it is determined whether or not the zoom lens position data is returned from the lens apparatus 100. If there is a reply, the process proceeds to step S1404, and if not, the process returns to step S1403. In step S1404, the zoom lens position of the zoom lens position data received from the lens apparatus 100 is compared with the zoom shot completion position of the zoom shot completion position data stored in step S504 of FIG. If the compared difference is equal to or larger than the maximum field angle correction amount of the zoom shot completion position data stored in step S504, the process proceeds to step S1405; otherwise, the process proceeds to step S1406. In step S1405, the shot state is changed to the normal state, the display unit 206 is turned off, and the process proceeds to step S1406.

  Next, processing of the lens apparatus 100 will be described. In step S1407, if there is a request for a zoom lens position request signal from the shot box 200, the process proceeds to step S1408. In step S1408, the field angle correction unit 109 calculates the maximum field angle correction amount of the zoom lens, and the process advances to step S1409. In step S1409, the zoom lens position data is returned, and the process proceeds to step S1410.

  As described above, by always calculating the maximum field angle correction amount on the lens side and notifying the shot box, the maximum field angle correction amount that varies depending on the focal length of the lens can be handled.

  In this embodiment, the method of calculating the maximum field angle correction amount on the lens side and transmitting it to the shot box is used. However, even if the shot box has a data table for the maximum field angle correction amount corresponding to the focal length in advance. Good.

  Hereinafter, with reference to FIG. 1, FIG. 5, and FIGS. 15-16, the imaging | photography system by the 4th Example of this invention is demonstrated. The same functional configuration as that of Embodiments 1 to 3 in FIGS.

  In this embodiment, the calculation unit 107 does not output the angle of view data to the communication unit 108. The storage unit 203 stores the zoom lens position instead of the angle of view when the zoom shot is completed.

  FIG. 15 is a diagram illustrating the state transition of the zoom shot according to the change of the zoom lens position by the field angle correction from the completion of the zoom shot in the present embodiment.

  In FIG. 15A, in a state where the zoom lens is at the position 151 when the zoom shot is completed, when the focus operation is performed after the zoom shot of 151 is completed, the angle of view is corrected and the zoom lens is moved to the position 152. Indicates the state. Furthermore, after the angle of view is corrected, the zoom lens is driven from the position 152 to the position 153 by a command from the zoom demand 300.

  FIG. 15B shows the zoom lens position, the zoom shot state, and the position of the zoom lens when the zoom shot is completed, corresponding to the positions 151, 152, and 153 of the zoom lens of FIG. Further, the zoom lens positions 151, 152, and 153 move in time series. The position of the zoom lens is the position of the zoom lens transmitted from the lens apparatus 100, and the zoom shot state is a completed state or a normal state defined in the first embodiment. The position of the zoom lens when the zoom shot is completed is the position of the zoom lens transmitted from the lens apparatus 100 when the zoom shot is completed and stored in the storage unit 203 of the shot box 200.

  FIG. 16 is a simplified communication flow between the lens apparatus 100 and the shot box 200 in the present embodiment. In FIG. 16, the zoom lens position request signal is a signal for requesting the zoom lens position transmitted from the shot box 200 to the lens apparatus 100. The zoom lens position data is a zoom lens position transmitted from the lens apparatus 100 to the shot box 200 in response to the zoom lens position request signal. The zoom shot command signal is a zoom shot drive command transmitted from the shot box 200 to the lens apparatus 100 in response to input of the input switches 201 (a to c) of the shot box 200. The zoom shot completion position data is a zoom shot completion notification transmitted from the lens apparatus 100 to the shot box 200 when the zoom shot is completed.

  16A shows a simplified flow of transmission / reception of a zoom lens position request signal and zoom lens position data, and FIG. 16B shows a simplified flow of transmission / reception of a zoom shot command signal and zoom shot completion position data.

  In FIG. 16A, the zoom lens position request signal is data that is transmitted and received while the lens apparatus 100 and the shot box 200 are connected, and includes a zoom lens position read command “zc”. When detecting the zoom lens position read command “zc” of the zoom lens position request signal, the lens apparatus 100 determines whether or not the angle of view is being corrected by the angle of view correction unit 109. Zoom lens position with ON / OFF data “on” and zoom lens position “aa” indicating “ON” if zoom angle position reading command “zc” is currently performing angle of view correction, and OFF otherwise. Data is returned to the shot box 200.

In FIG. 16B, the zoom shot command signal and the zoom shot completion position data have the same configuration and the same flow as those in FIG. 10 of the second embodiment.
While the lens apparatus 100 and the shot box 200 are connected, the zoom lens position request signal and the zoom lens position data shown in FIG. 16A are transmitted and received according to the flowchart of FIG. When executing the zoom shot, the zoom shot command signal and zoom shot completion position data shown in FIG. 16B are transmitted and received according to the flowchart of FIG.

  FIG. 17 is a flowchart of the lens apparatus 100 and the shot box 200 when the zoom lens 102 moves from the position 151 at the completion of the zoom shot in FIG. 15 to the position 152 after the angle of view correction.

  First, the process of the shot box 200 will be described. When the zoom shot is completed in step S1701, the process proceeds to step S1702, a zoom lens position request signal is requested from the lens apparatus 100, and the process proceeds to step S1703. In step S1703, it is determined whether or not the zoom lens position data is returned from the lens apparatus 100. If there is a reply, the process proceeds to step S1704, and if not, the process returns to step S1703. In step S1704, the angle-of-view correction ON / OFF data of the zoom lens position data from the lens apparatus 100 is referred. If ON, the process proceeds to step S1705, and if OFF, the process proceeds to step S1706. In step S1705, the zoom shot completion position of the zoom shot completion position data stored in step S504 is updated to the zoom lens position of the zoom lens position data received in step S1704, and the process proceeds to step S1706. In step S1706, the zoom shot completion position is compared with the zoom lens position. If there is a difference, the process proceeds to step S1707, and if not, the process proceeds to step S1708. In step S1707, the display unit 206 is turned off, and the process proceeds to step S1708.

  Next, processing of the lens apparatus 100 will be described. If there is a request for a zoom lens position request signal from the shot box 200 in step S1709, the process proceeds to step S1710. In step S1710, the zoom lens position data is returned, and the process proceeds to step S1711.

  From the above, by notifying the shot box of whether the view angle correction function is enabled or disabled from the lens, it is possible to determine whether or not the view angle is being corrected in the shot box. The state can be kept in the completed state.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment, A various deformation | transformation and change are possible within the range of the summary.

1 109 Angle of view correction unit 2 201 Input switch 3 203 Storage unit 4 206 Display unit

Claims (11)

A lens device capable of driving a zoom lens and a focus lens;
A plurality of storage units for storing command values to the lens device, a plurality of selection units corresponding to the storage units, and a command unit having a plurality of state display units corresponding to the selection units;
A photographing system comprising:
By selecting one of the selection means, the command value stored in the corresponding storage unit is transmitted to the lens device, and the lens device can drive the zoom lens based on the command value. Yes,
Each of the plurality of state display means displays the first display while the zoom lens is driven according to the corresponding command value, and the second display while the zoom lens is driven to the corresponding command value. , Display the third display in the state of the other zoom lens,
After the command device transmits the command value to the lens device, the state of the lens device is determined, and the state display means is changed to a third display based on the determination. .   The imaging system according to claim 1, wherein the command value is a field angle, and the lens device calculates a field angle from a zoom position and a focus position. The command value is a zoom position, and the lens device calculates an angle of view from the zoom position and the focus position,
The determination is performed based on a comparison between an angle of view corresponding to the zoom position as the command value and an angle of view transmitted from the lens device to the command device.
The imaging system according to claim 1. The lens device has an angle of view correction function that keeps the angle of view constant by driving the zoom lens when the focus lens is driven, and is the maximum movement amount of the zoom lens by the zoom position and the angle of view correction function. Send the angle of view correction amount to the command device,
The command value is a zoom position,
The determination is performed based on a comparison between the zoom position as the command value, the zoom position transmitted from the lens device to the command device, and the maximum angle of view correction amount.
The imaging system according to claim 1. The lens device has an angle-of-view correction function for driving the zoom lens to keep the angle of view constant when the focus lens is driven, and outputs a signal indicating the zoom position and the validity or invalidity of the angle-of-view correction function. To the command device,
The command value is a zoom position,
If the field angle correction function is valid, the determination is performed based on a comparison between the zoom position as the command value and the zoom position from the lens device.
The imaging system according to claim 1.   The photographing system according to claim 4, wherein the maximum field angle correction amount is a predetermined value given to the command device in advance.   5. The photographing according to claim 4, wherein the command device has a plurality of maximum field angle correction amounts in advance, and the command device selects from the plurality of maximum field angle correction amounts when recognizing the lens device. system.   The lens device has the maximum field angle correction amount in advance, and the lens device includes notification means for notifying the command device of a maximum amount of zoom position movement by the field angle correction function. 4. The photographing system according to 4.   The imaging system according to claim 4, wherein the lens apparatus includes a calculation unit that calculates a maximum movement amount of the zoom position by the angle-of-view correction function from the zoom position.   The imaging system according to claim 9, wherein the signal transmitted from the lens device to the command device includes a maximum field angle correction amount calculated by the calculation unit.   The photographing system according to claim 1, wherein the display unit is an LED, and the state is displayed according to a lighting state of the LED.

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