JP2015166881A - Lens device and imaging apparatus having lens device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a set value of a setting item to be confirmed and set using a function of a lens device used for normal photography.SOLUTION: A lens device comprises an optical member and an operation member which is connected to the optical member and performs operation for driving the optical member. The lens device can operate in a confirmation mode for confirming a specified set value of the lens device, and in the confirmation mode, the operation member moves to a position corresponding to the specified set value for displaying the specified set value.

Description

  The present invention relates to a lens device, and more particularly to a lens device capable of confirming a setting value for each setting item of the lens device and an imaging device having the lens device.

2. Description of the Related Art Conventionally, a method of providing a display unit such as a display in a lens system main body in order to check a set value for each lens system is known.
For example, Patent Document 1 discloses a television lens provided with display means for displaying information. Further, Patent Document 2 discloses a lens device that automatically drives a zoom lens to a predetermined position when the validity / invalidity of a function is switched.

JP 2004-294665A JP 2005-018035 A

  The television lens disclosed in Patent Document 1 needs to be provided with a special function for displaying the set value, and is not used for the main operation of the lens apparatus, and the set value display is relatively infrequently used. -It is not preferable to provide a special device configuration for use for confirmation because it complicates and enlarges the configuration of the lens system. Further, in the prior art disclosed in Patent Document 2, the validity / invalidity of the function is switched by the operation, and it is not possible to confirm whether or not the function is currently valid.

  An object of the present invention is to provide a lens apparatus that can check and set a set value for each lens system using a function used for normal photographing of the lens system.

In order to achieve the above object, a lens apparatus of the present invention comprises a control means for controlling the lens apparatus, a command input means for inputting a command to the control means, and a communication means connected to the control means. A communication unit that communicates with a camera device that can be attached to the lens device, and a storage unit that stores a setting value for a setting item of the lens device, and the control unit follows a command from the command input unit. The communication means is controlled to output based on the setting value of the setting item stored in the storage means according to the normal mode for controlling the communication means and the command from the command input means, and A setting confirmation mode in which the set value can be changed by a command from the command input means .

  ADVANTAGE OF THE INVENTION According to this invention, the lens apparatus which enabled confirmation of the setting value for every individual | organism | solid can be provided using the function used for normal imaging | photography of a lens system.

Block diagram showing the first embodiment A table showing the relationship between the setting value of the setting item α of Example 1 and the aperture position The flowchart which shows Example 1. Block diagram showing a second embodiment Table of character strings indicating the relationship of setting values to each setting item in the second embodiment The flowchart which shows Example 2. Numerical value table showing the relationship of setting values to each setting item of Example 2 Block diagram showing a third embodiment Table of terminals indicating the relationship of setting values to each setting item of Example 3

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a block diagram showing a configuration of a lens apparatus according to an embodiment of the present invention.

  Hereinafter, a block diagram showing a configuration of a lens device according to a first embodiment of the present invention will be described with reference to FIG.

The lens apparatus according to the present invention includes a lens system 10 that can be attached to and detached from a camera body, and a separate lens type camera 40. The separate lens type camera 40 can take a picture with the lens system 10 connected thereto. it can. The lens system 10 includes a diaphragm unit 11, and by changing the position of the diaphragm unit 11, it is possible to adjust the amount of light captured by the lens-specific camera 40.
The lens system 10 includes a lens calculation unit 16 that controls the lens system 10.

  The separate lens type camera 40 includes a camera calculation unit 41 that can communicate with the lens calculation unit 16. The camera calculation unit 41 can make a control request for the lens system 10 and a status acquisition request to the lens calculation unit 16.

  The position detection unit 12 detects the position of the diaphragm unit 11. The position detection unit 12 is connected to the lens calculation unit 16, and the lens calculation unit 16 can acquire the position of the diaphragm unit 11. Here, the diaphragm unit 11 has a plurality of light shielding blades and interlocks with an aperture diameter variable mechanism of an iris diaphragm having a variable aperture diameter (mechanically connected or a drive mechanism is connected by a gear or the like). Is desirable). Further, it is desirable that the diaphragm unit 11 is linked with an iris ring that is operated when the diaphragm unit is driven manually.

  The position of the throttle unit 11 can be changed by the drive unit 13 connected via the gear 15. The drive unit 13 is connected to the lens calculation unit 16, and the lens calculation unit 16 can control the drive of the drive unit 13. In the normal mode, the lens calculation unit 16 changes the position of the diaphragm unit 11 in accordance with the control request of the separate lens type camera 40. The normal mode here is a mode in which photographing can be performed as usual.

The user can connect / release the drive unit 13 and the gear 15 using the servo / manual switching unit 14. When the servo / manual switching unit 14 is in the servo state, the drive unit 13 and the gear 15 are connected, and the lens calculation unit 16 can drive the drive unit 13 to change the position of the diaphragm unit 11. When the servo / manual switching unit 14 is in the manual state, the connection between the drive unit 13 and the gear 15 is released, and the user can manually operate the aperture unit 11.
A storage unit 17 connected to the lens calculation unit 16 stores a set value of the lens system 10.

  The lens system 10 includes a RET SW 19 and a VTR SW 20 that are switches (command input means) connected to the lens calculation unit 16. The lens calculation unit 16 can check the ON / OFF states of these switches. In the normal mode, the lens calculation unit 16 returns the ON / OFF state of each switch in response to the status acquisition request from the camera calculation unit 41. In the description of the present invention, a VTR SW 20 for instructing start / end of shooting, which is relatively commonly provided in a broadcasting lens apparatus, and a viewfinder for a screen that is being shot with an on-air screen or another camera. The RET SW 19 for switching the display to is illustrated. However, the present invention basically has an input function such as a switch function regardless of the main purpose given to the switch.

  In the present invention, the state in which the lens system is in the “normal mode” indicates a state in which the lens system can operate a normal photographing function. The setting confirmation mode is a mode for shifting from the normal mode by a specific operation. In the setting confirmation mode, the normal photographing function does not function in the lens system, and the setting value of the setting item of the lens system is set. -Indicates that the confirmation operation can be performed. The setting confirmation mode includes a confirmation mode for confirming the setting value of the setting item described above, and a setting mode for changing (resetting) the setting value of the setting item. It is also possible to execute only one of them. The same applies to the following embodiments.

  The table shown in FIG. 2 shows the relationship between the setting value of the setting item α stored in the storage unit 17 and the aperture position used in the setting confirmation mode. In the setting / confirmation mode processing described below, it is possible to confirm the setting value of the setting item α by driving and controlling the position of the aperture 11 according to this table. For example, when the position of the diaphragm unit 11 is F8, the setting value of the setting item α is the setting value B.

Hereinafter, with reference to FIG. 3, a flowchart showing a setting / confirmation mode process in the setting confirmation mode according to the first embodiment of the present invention will be described.
This process is performed according to a computer program stored in the lens calculation unit 16. In step S100, the setting / confirmation mode processing of the lens calculation unit 16 is started. This setting / confirmation mode process starts when the power is turned on.

  In step S101, it is confirmed whether or not the transition to the confirmation mode is valid. Although there is no particular limitation, for example, when the servo / manual switching unit 14 is in the servo state and the RET SW 19 is pressed, it is determined that shifting to the confirmation mode is effective (selected). If the transition to the confirmation mode is valid, the process proceeds to step S102; otherwise, the process proceeds to step S103.

  In step S102, the diaphragm unit 11 is driven to the specified position of the diaphragm unit 11 corresponding to the setting value of the setting item α stored in the storage unit 17 in accordance with the table shown in FIG. By this operation, it is possible to confirm the current setting value of the setting item α by visually observing the aperture 11. In other words, at this time, the aperture section is no longer functioning as the aperture section of the lens apparatus, but is functioning as a display section that indirectly represents the setting value of the setting item α by the aperture position (confirmation mode). .

  In step S103, it is confirmed whether or not the transition to the setting mode is valid. Although there is no particular limitation, for example, when the servo / manual switching unit 14 is in the manual state and the RET SW 19 is pressed, it is determined that transition to the setting mode is effective (selected). If the transition to the setting mode is valid, the process proceeds to step S104. Otherwise, the process proceeds to step S106.

  In step S104, according to the table shown in FIG. 2, the setting value of the setting item α is selected by manually moving the aperture section 11 to the specified position, and when the setting operation for setting the setting value is executed, the process proceeds to step S105. . Although the setting operation is not particularly defined, for example, when the RET SW 19 and the VTR SW 20 are pressed simultaneously, it is determined that the setting operation is executed.

In step S105, according to the table shown in FIG. 2, the setting value corresponding to the position of the diaphragm unit 11 is stored in the storage unit 17 as the setting value of the setting item α, and the process proceeds to step S104. By this operation, the set value of the setting item α can be set to a desired value (setting mode).
In step S106, the setting / confirmation mode process is terminated, and the normal mode is entered.

By controlling in this way, in the normal mode, the diaphragm unit 11 is driven in accordance with the control request of the separate lens type camera 40. Further, in the setting confirmation mode in which the setting / confirmation mode processing is executed, the diaphragm unit 11 is driven according to the setting value of the setting item α stored in the storage unit 17 and the operation of the servo / manual switching unit 14 and the RET SW 19.
In this embodiment, the setting / confirmation mode process is started when the power is turned on. However, a switch for entering the setting / confirmation mode may be provided separately, and the setting / confirmation mode process may be started when the switch is turned on.

  Further, in this embodiment, the diaphragm unit 11 is used as the controlled means controlled by the lens calculation unit 16 so that the setting value of the setting item can be confirmed. A zoom unit for adjustment and a focus unit for adjusting the focus state may be used as the controlled means.

  As described above, the lens apparatus according to the present exemplary embodiment includes the optical member such as a diaphragm and the operation member that is connected to the optical member and operates to drive the optical member. The operation member is, for example, a ring-shaped member disposed on the outer periphery of the lens device. Here, the lens apparatus can operate in a confirmation mode for confirming a specific set value of the lens apparatus. In the above-described embodiment, the operation member (iris ring) used to operate the variable aperture or to confirm the aperture value (F number) in the normal mode (normal photographing mode or the like) is the confirmation mode. Shows different setting items. Here, unlike the function that this operation member performs in the normal mode, a specific set value (value set for a specific item) is displayed by moving to a position corresponding to the specific set value. ing.

  In the first embodiment, the setting value for a specific item is displayed using the operation member for operating the variable aperture, but this is not restrictive. For example, as described above, a zoom ring operated to drive the zoom lens group (zoom unit) that moves during zooming, or an operation to move the focus lens group during focus adjustment (focusing operation) A focus ring or the like to be used may be used as an operation member, and setting values (detection values) other than the zoom position and the focus position may be displayed using these operation members.

  According to the present invention as described above, the set value for each lens system is confirmed and set using a member that performs the minimum function necessary for normal imaging of the lens system (to perform another function). It is possible to provide a lens device that makes it possible.

  Hereinafter, with reference to FIG. 4, a block diagram showing the configuration of the lens apparatus according to the second embodiment of the present invention will be described. The points not particularly described in detail are the same as those in the first embodiment.

The lens apparatus of the present embodiment includes a lens system 10 and a lens-specific camera 40, and the lens-specific camera 40 can take an image with the lens system 10 connected.
The lens system 10 includes a lens calculation unit 16 that controls the lens system 10.

  The separate lens-type camera 40 includes a camera calculation unit 41 that can communicate with the lens calculation unit 16 by, for example, serial communication or the like. This communication can be freely disconnected from the camera calculation unit 41 or the lens calculation unit 16. The camera calculation unit 41 can make an acquisition request to the lens calculation unit 16 for the state of the lens system 10 and a predetermined character string (for example, the name of the lens system 10).

  The separate lens type camera 40 has a display unit 42 connected to a camera calculation unit 41. In the normal mode, the camera calculation unit 41 displays a predetermined character string (for example, the name of the lens system 10) acquired from the lens system 10 on the display unit 42.

The lens system 10 includes a storage unit 17 connected to the lens calculation unit 16. The storage unit 17 stores a set value of the lens system 10.
The lens system 10 has RET SW 19 and VTR SW 20 which are switches connected to the lens calculation unit 16 as command input means, and the lens calculation unit 16 can check the ON / OFF state of each switch. . In the normal mode, the lens calculation unit 16 returns the ON / OFF state of each switch to the status acquisition request of the camera calculation unit 41.

  Furthermore, the lens system 10 has an IRIS SW 18 that is a switch connected to the lens calculation unit 16 as one of command input means, and the lens calculation unit 16 can check the ON / OFF state of the switch. It is. In the normal mode, a diaphragm unit (not shown) connected to the lens calculation unit 16 is driven by a servo when the IRIS SW 18 is ON, and can be manually operated when the IRIS SW 18 is OFF.

  The lens system 10 has a Shot SW 21 that is a switch connected to the lens calculation unit 16 as one of command input means, and the lens calculation unit 16 can check the ON / OFF state of the switch. It is. In the normal mode, a zoom unit (not shown) connected to the lens calculation unit 16 is controlled to move to a specific zoom position when the Shot SW 21 is turned on.

  The table shown in FIG. 5 shows the relationship of the setting values for each setting item stored in the storage unit 17 used in the setting confirmation mode. For example, the setting item α has three types of setting values A, B, and C, and any one of the setting values is stored.

In the setting / confirmation mode processing described below, the setting / confirmation mode character string is returned in response to the predetermined character string acquisition request of the camera calculation unit 41. The setting / confirmation mode character string is a character string that generates a specific number from the numbers shown in the table of FIG. For example, when the setting item α is currently selected as No. 1 and the setting value of the setting item α is the setting value A, the setting / confirmation mode character string is generated as “setting item α: setting value A”. For example, specific examples of the setting items are an aperture, zoom, focus, and the like, and an aperture value, a zoom position, and a focus position corresponding to each are set values.
Since the setting / confirmation mode character string is displayed on the display unit 42 as a predetermined character string, it is possible to confirm the setting value for each setting item.

  Hereinafter, with reference to FIG. 6, a flowchart showing a setting / confirmation mode process in the setting confirmation mode according to the second embodiment of the present invention will be described.

  This process is performed according to a computer program stored in the lens calculation unit 16. In step S200, the setting / confirmation mode processing of the lens calculation unit 16 is started. This setting / confirmation mode process starts when the power is turned on. At this time, the setting confirmation mode setting is set to be valid.

In step S201, the communication with the camera is once disconnected and then reconnected, and the process proceeds to step S202.
In step S202, it is confirmed whether the setting / confirmation mode setting is valid. If the setting / confirmation mode setting is valid, the process proceeds to step S203; otherwise, the process proceeds to step S211.

  In step S203, it is confirmed whether the IRIS SW 18 is ON. If it is ON, the process proceeds to step S204. Otherwise, the process proceeds to step S205. In step S204, the lens calculation unit 16 increments the setting item number shown in the table of FIG. For example, when the setting item β is currently selected in No. 2, the setting item γ is selected as No. 3, and the setting item displayed in the setting / confirmation mode character string is the setting item γ. Thereafter, the process proceeds to step S201.

In step S205, it is confirmed whether the RET SW 19 is ON. If it is ON, the process proceeds to step S206. Otherwise, the process proceeds to step S207.
In step S206, the lens calculation unit 16 decrements the setting item number shown in the table of FIG. For example, if the setting item β is currently selected in No. 2, the setting item α is selected as No. 1, and the setting item displayed in the setting / confirmation mode character string is the setting item α. Thereafter, the process proceeds to step S201.
In step S207, it is confirmed whether Shot SW21 is ON. If it is ON, the process proceeds to step S208. Otherwise, the process proceeds to step S209.

  In step S208, the lens calculation unit 16 increments the setting value set in the setting item corresponding to the setting item No. currently selected. For example, when the setting item α is selected at the current No. 1 and the current setting value is the setting value B, the setting value is incremented and set to the setting value C (see FIG. 5). Thereafter, the process proceeds to step S201.

In step S209, it is confirmed whether the VTR SW 20 is ON. If it is ON, the process proceeds to step S210. Otherwise, the process proceeds to step S203.
In step S210, the lens calculation unit 16 decrements the setting value set in the setting item corresponding to the setting item No. currently selected. For example, when the setting item α is currently selected as No. 1 and the current setting value is the setting value B, the setting value is decremented and set to the setting value A (see FIG. 5). Thereafter, the process proceeds to step S201.
In step S211, the setting / confirmation mode process is terminated, and a transition is made to the normal mode.

  In the normal mode, the camera calculation unit 41 of the lens-separated camera 40 acquires a character string to be displayed on the display unit 42, such as the name of a lens device belonging to the column, at the start of communication with the lens system 10. It can be assumed that this is performed only once. The present embodiment uses this function to check various setting values of the lens device. Therefore, in order to update the character string displayed on the display unit 42, in step S201, the communication with the camera is once disconnected and then reconnected. By performing step S <b> 201, the camera calculation unit 41 issues a character string acquisition request for display on the display unit 42 to the lens system 10. In response to this request, the lens calculation unit 16 of the lens system 10 sets and confirms the setting item corresponding to the setting item No. selected in steps S204, S206, S208, and S210 and the setting value set in the setting item. A mode character string is generated and transmitted to the camera calculation unit 41, and the character string is displayed on the display unit 42.

  Further, No. 4 shown in the table of FIG. 5 is a setting item that is set when the setting / confirmation mode process is terminated. If the setting / confirmation mode setting is set to invalid, the process proceeds from step S202 to step S211 and the setting / confirmation mode process ends.

  By controlling in this way, the character string (for example, the name of the lens system 10) determined in the normal mode is displayed on the display unit 42, and in the setting confirmation mode in which the setting / confirmation mode processing is executed, IRIS In accordance with the operation of SW18, RET SW19, VTR SW20, and Shot SW21, the setting / confirmation mode character string generated from the setting items and setting values stored in the storage unit 17 is displayed on the display unit 42.

  In this embodiment, a communication means (not shown) included in the lens calculation section 16 is used as a controlled means controlled by the lens calculation section 16 so that the setting value of the setting item can be confirmed. . Although the function of displaying the determined character string on the display unit 42 is used, as shown in the table of FIG. 7, a function of displaying the lens position on the display unit 42 may be used. Here, a function for displaying the positions of the Zoom part and the Focus part (not shown) numerically is used. In this case, when “1” is displayed in the Zoom section and “1” is displayed in the Focus section during the setting / confirmation mode, the setting item α is selected with the current No. 1 and the set value is the set value. That means A. Further, in this case, it can be assumed that the camera calculation unit 41 acquires information on the lens position and updates the display at any time. Therefore, in step S201, it is not necessary to perform an operation of once disconnecting from the camera.

  ADVANTAGE OF THE INVENTION According to this invention, the lens apparatus which made it possible to confirm and set the setting value for every lens system individual using the function used for normal imaging | photography of a lens system can be provided.

  Hereinafter, with reference to FIG. 8, a block diagram showing a configuration of a lens apparatus according to a third embodiment of the present invention will be described. The points not particularly described in detail are the same as those in the first embodiment.

  The lens apparatus according to the present embodiment includes a lens system 10 and a lens-separated camera (not shown), and the lens-equipped camera can take a picture with the lens system 10 connected.

The lens system 10 includes a lens calculation unit 16 that controls the lens system 10.
In addition, the lens system 10 includes a storage unit 17 connected to the lens calculation unit 16, and the storage unit 17 stores a setting value of the lens system 10.

  The lens system 10 includes RET SW 19, VTR SW 20, IRIS SW 18, and Shot SW 21 that are switches connected to the lens calculation unit 16, and performs an operation equivalent to the operation described in the second embodiment. That is, regarding the setting item designation, the setting item No. is incremented by the IRIS SW 18 and decremented by the RET SW 19, and the setting value for the designated setting item is incremented by the Shot SW 21 and decremented by the VTR SW 20.

  The lens system 10 includes a RET output unit 51 and a VTR output unit 52 which are terminals connected to the lens calculation unit 16. In the normal mode, the high / low states of the output voltages of the terminals of the RET output unit 51 and the VTR output unit 52 are changed in conjunction with the switch ON / OFF states of the RET SW 19 and the VTR SW 20. From the output voltages of the terminals of the RET output unit 51 and the VTR output unit 52, a lens-separated camera (not shown) can determine each switch state of the lens system.

  The lens system 10 further includes an aperture position output unit 53 that is a terminal connected to the lens calculation unit 16. In the normal mode, the diaphragm position output unit 53 changes the voltage in conjunction with the position of a diaphragm unit (not shown). For example, it is 6.2 [V] when the aperture position is F2.8, and 3.4 [V] when it is F16. With this terminal, a lens-separated camera (not shown) can determine the position of the aperture portion of the lens system.

  The table shown in FIG. 9 shows the relationship between the setting values for each setting item stored in the storage unit 17 used in the setting confirmation mode. For example, in the setting item α, setting values A, B, and C can be set, and any setting value is stored.

  Here, the setting item number is represented by a combination of the output voltages of the RET output unit 51 and the VTR output unit 52, and the setting value set in the setting item corresponding to the setting item number is displayed by the aperture position output unit 53. Represents. For example, when the RET output unit 51 is Low, the VTR output unit 52 is Low, and the aperture position output unit 53 is 3 [V], 1 is selected as the current setting item number, and the corresponding setting item is “setting item α. ”And the setting value set in the setting item α is the setting value A.

  In the second embodiment, when communication between the lens system 10 and the separate lens type camera 40 is established, the separate lens type camera 40 uses a character string for recognizing the connected lens system 10 as initial information. The setting values set in the various setting items of the lens system 10 are displayed using a function of receiving the information from the display unit 42 and displaying the information on the display unit 42. In the present embodiment, as the controlled means controlled by the lens calculation unit 16 so that the setting value of the setting item can be confirmed, a RET output unit 51, a VTR output unit 52, an aperture position output unit 53 was used. That is, in the third embodiment, as information to be output from the lens system 10 to the lens-separated camera 40, information indicating a setting item is output by a combination of a high or low voltage of the RET output unit 51 and the VTR output unit 52, Information indicating a set value corresponding to the setting item is output by the voltage of the aperture position output unit 53.

  Therefore, the flowchart showing the setting / confirmation mode processing of the setting confirmation mode according to the third embodiment of the present invention is the same as that according to the second embodiment of the present invention shown in FIG. Therefore, it is not necessary to disconnect the communication with the camera once.

  By controlling in this way, in the normal mode, the state of the normal photographing function is reflected in each output terminal of the RET output unit 51, the VTR output unit 52, and the aperture position output unit 53. In the setting confirmation mode in which the setting / confirmation mode processing is executed, the state reflecting the setting items and setting values stored in the storage unit 17 in accordance with the operation of the IRIS SW 18, RET SW 19, VTR SW 20, and Shot SW 21 is set for each terminal. It becomes a state.

  ADVANTAGE OF THE INVENTION According to this invention, the lens apparatus which enabled it to confirm and set the setting value for every lens system individual using the function used for normal imaging | photography of a lens system can be provided.

Furthermore, an imaging device (camera device) including the imaging device and the lens device of the present invention that guides light from a subject to the imaging device is a function used for normal photographing of the lens device, which is an effect of the present invention. Using this, it is possible to realize an imaging apparatus that can confirm and set the set value for each lens apparatus.
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.

10 Lens System 11 Aperture 17 Storage 18 IRIS SW
19 RET SW
20 VTR SW
21 Shot SW
51 RET output section 52 VTR output section 53 Aperture position output section

Claims (5)

The lens device
Control means for controlling the lens device;
Command input means for inputting a command to the control means;
A communication means connected to the control means for communicating with a camera device attachable to the lens device;
Storage means for storing setting values for the setting items of the lens device;
Have
The control means includes
A normal mode for controlling the communication means in accordance with a command from the command input means;
In accordance with a command from the command input unit, the communication unit is controlled to output based on a setting value of a setting item stored in the storage unit, and the set value is set by a command from the command input unit. You can change the setting confirmation mode,
Having
A lens device. The communication means is a serial communication means;
The lens apparatus according to claim 1, wherein in the setting check mode, the communication of the serial communication unit is disconnected and connected.   The lens apparatus according to claim 1, wherein the camera apparatus includes display means, and displays information acquired from the lens apparatus using the communication means on the display means.   In the setting confirmation mode, the control means selects a setting item stored in the storage means by operating the command input means, and controls the communication means based on a setting value of the selected setting item. 4. The lens apparatus according to claim 1, wherein a setting value of the selected setting item can be changed by operating the command input unit.   An imaging apparatus comprising: an imaging element; and the lens apparatus according to claim 1 that guides light from a subject to the imaging element.

Images