JP2017111370A - Lens unit and imaging apparatus having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lens unit having an optimal holding structure which enables motor-driven operation of zoom irrespective of shooting mode.SOLUTION: The lens unit has an optical element and a drive part that drives the optical element, which includes: an operation part that transmits a control signal for controlling the drive of the drive part; and an attaching/detaching structure for attaching/detaching a grip part for holding the lens unit.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lens apparatus and an imaging apparatus having the lens apparatus.

  Regarding a structure for holding a lens apparatus including a lens and a camera, Patent Documents 1 and 2 propose a structure for obtaining an optimal holding form for a photographer. In Patent Document 1, a lens device with an interchangeable grip has been proposed in order to obtain an optimal holding form corresponding to the use of shooting a moving image, a still image, or the like. Patent Document 2 proposes a holding position adjustment structure for adjusting the holding position for holding the lens device to an optimum position for the photographer.

JP 2007-104316 A Japanese Patent Laid-Open No. 5-207347

  According to Japanese Patent Laid-Open No. 2004-260688, since the zoom electric operation is performed only on the moving image grip, there is a problem that the zoom electric operation cannot be performed if the grip is replaced. Further, in Patent Document 2, the position of the holding portion when the lens apparatus is held on the shoulder is adjusted, and an optimum seesaw switch operation position is obtained for a photographing form in which the lens apparatus is held at a position to be supported from below. It is difficult.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a lens apparatus having an optimal holding structure that can perform an electric zoom operation regardless of the photographing mode.

  In order to achieve the above object, a lens apparatus of the present invention is a lens apparatus having an optical element and a drive unit that drives the optical element, and transmits a control signal that controls the drive of the drive unit. And an attaching / detaching structure for attaching / detaching a grip portion for holding the lens device.

  According to the present invention, it is possible to provide a lens device having an optimal holding structure capable of performing an electric zoom operation regardless of a photographing form, and an imaging device having the lens device.

1 is an overall view of a lens device in Embodiment 1 of the present invention. It is a fragmentary sectional view of the lens apparatus in Example 1 of this invention. It is a front view of the lens apparatus in Example 1 of this invention. It is a grip mounting | wearing figure of the lens apparatus in Example 1 of this invention. It is the figure which showed the grip attachment / detachment structure of the lens apparatus in Example 1 of this invention. FIG. 6 is a rear view of the lens device according to Example 2 of the present invention. FIG. 6 is a right side view of the lens apparatus according to Example 2 of the present invention. It is a flowchart in Example 2 of this invention.

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

  The photographing apparatus of the present embodiment will be described with reference to FIGS. FIG. 1 shows an overall view of a photographing apparatus in the present embodiment. The lens device 1a is disposed on the outer periphery of the lens barrel, and includes a focus operation ring 2, a zoom operation ring 3, and an iris operation ring 4 that rotate around an optical axis for manually operating optical elements such as a focus lens, a zoom lens, and an iris. Have The lens device 1a is detachably connected to a camera device 50a having an image sensor such as a CCD or a CMOS that receives an optical image of a subject formed by the lens device via a mount 5 (see FIGS. 5 and 6). To do. On the back surface of the camera device 50a, there is a display 51 for displaying the captured video. A camera grip 52 for holding the camera device 50a is fixed to the side surface of the camera device 50a.

  FIG. 2 is a partial cross-sectional view of the servo unit 20a fixed to the lens device 1a with screws or the like as viewed from the mount 5 side of the lens device 1a. A zoom motor (zoom drive unit) 24 indicated by a broken line is held by a zoom motor fixing unit 27 and fixed inside the servo unit 20a. A motor gear 25 is connected to the tip of the rotation shaft of the zoom motor 24, and meshes with a gear portion formed on the outer periphery of the zoom operation ring 3 via an idler gear 26, so that the rotational force of the zoom motor 24 is controlled by the zoom operation ring 3. To tell. The zoom motor 24 is electrically connected to the control board 23 and its rotation is controlled by a control unit configured on the control board.

  Zoom operation units (operation units) 21a and 21b (FIGS. 1 and 2) made of an elastic member such as rubber can be operated from the exterior surface of the servo unit 20a. The photographer presses the zoom operation units 21a and 21b to switch on the control board 23 fixed to the fixing member 28 provided radially outside the zoom operation ring 3 in the servo unit 20a. (Pressing part) 22 is pressed and a switch is switched. For example, the zoom motor 24 is controlled to rotate to the wide side when the zoom operation unit 21a is pressed and to the tele side when the zoom operation unit 21b is pressed. It is also possible to switch the setting of the zoom operation unit by a setting switching unit (not shown) and to reverse the direction of the zoom operation.

  FIG. 3 is a front view of the photographing apparatus viewed from the subject side. The photographing form shown in the figure is a form in which the photographer's right hand 60 supports the camera grip 52 and the photographer's left hand 61 supports the servo unit 20a. The photographer electrically operates the zoom by operating the zoom operation units 21a and 21b with the photographer's left hand 61. Further, since the photographer's left hand 61 supports the lower surface of the servo unit 20a, it is difficult to touch each operation ring, and erroneous operation can be prevented. When performing manual operation, it is also possible to operate the operation ring with the thumb of the photographer's left hand 61 while supporting the lower surface of the servo unit 20a.

  FIG. 4 is a diagram in which the grip unit 30a is attached to the lens device 1a. The lens device 1 a is connected to the camera device 50 b through the mount 5. The shooting mode shown in FIG. 4 is a shoulder-held shooting mode in which the shoulder pad portion 53 formed on the lower surface of the camera device 50b is placed on the shoulder of the photographer and the grip portion 30a is held by the photographer's right hand 60. The grip portion 30a has a back portion 35 for holding the photographer's right hand 60 fixed by a strap, and a seesaw switch (second operation portion) 34 is fixed in a state exposed on the surface of the operation portion. The seesaw switch 34 is a resistor whose output signal changes according to the inclination angle of the switch. The photographer performs an electric zoom operation by changing the inclination angle of the seesaw switch 34 with the finger of the photographer's right hand 60.

  FIG. 5 shows a detachable structure of the lens device 1a and the grip part 30a. The grip portion 30a has a fixing screw 31, and the grip portion 30a is fixed to the lens device 1a by tightening to the grip fixing screw portion 6 (see FIG. 1) on the lens device 1a side. The surface of the lens fixing taper portion 32 on the grip portion 30a side and the respective surfaces of the grip fixing taper portion 7 on the lens device 1a side are in contact with each other to restrict rotation when the grip portion 30a is fixed. When the grip portion 30a is fixed, the lens communication contact portion 33 on the grip portion 30a is connected to the grip communication contact portion 8 on the lens device 1a side, so that control signals for the seesaw switch 34 and the recording switch 36 are sent to the lens device 1a. Send to.

  As described above, according to the present invention, by attaching and detaching the grip portion 30a according to the shooting application, it is possible to realize an optimal holding state for both the handheld shooting mode and the shoulder-held shooting mode, and in which shooting mode The electric zoom operation can be operated in an optimal holding state. In this embodiment, when the grip portion 30a is attached, the zoom operation portions 21a and 21b are hidden, so that the zoom operation portions 21a and 21b are not erroneously operated in the shoulder-held shooting mode. In the present invention, the zoom operation units 21a and 21b have independent switch structures, but a seesaw switch 34 similar to the grip unit 30a may be used. Although the zoom operation units 21a and 21b are zoom drive control operations, the operation of the drive system related to the lens device such as focus and iris may be targeted.

  The imaging apparatus of the present embodiment will be described with reference to FIGS. FIG. 6 is a diagram viewed from the imaging surface side of the lens device in the present embodiment, and FIG. 7 is a right side view of the lens device. The lens device 1b of the present embodiment has a basic configuration equivalent to that of the lens device of the first embodiment shown in FIG. 1, but has a communication cable 37 as a characteristic configuration. The communication cable 37 is an alternative to the communication contact portion shown in the first embodiment, is fixed to the grip portion 30b, is connected to the servo portion 20b via a connector 38 at the end of the cable, and the servo portion 20b and the grip portion 30b. Enables communication with each other. As in the first embodiment, in the shoulder-held shooting mode, the photographer performs an electric zoom operation by operating the seesaw switch 34.

  Next, processing for selecting functions of the zoom operation units 21a and 21b depending on whether or not the grip unit 30b is attached will be described with reference to the flowchart of FIG.

  S101 is a process for determining whether or not the grip part 30b is connected to the servo part 20b. When the grip part 30b is connected, the process selects S102, and when it is not connected, the process selects S103. S102 is processing when the communication cable 37 is connected, and invalidates control during operation of the zoom operation units 21a and 21b in the servo unit 20b. S103 is processing when the communication cable 37 is not connected, and the control at the time of operating the zoom operation units 21a and 21b is validated. That is, when it is recognized by a communication control unit or a control unit (connection recognition unit) (not shown) that the grip unit 30b using the communication cable 37 has established communication between the servo units 20b, the grip unit 30b is connected to the servo unit 20b. Is determined to be connected.

  The above process is performed by a CPU (not shown) on the control board 23 in the servo unit 20b. Here, since the grip portion 30b communicates with the communication cable 37, the seesaw switch 34 can be operated even when the grip portion 30b is detached from the lens device 1b. Therefore, for example, it becomes possible to attach to accessories such as a tripod having the same structure as the grip fixing taper portion 7. At this time, since the functions of the zoom operation units 21a and 21b are invalidated in the process S102, erroneous operation can be prevented even when the zoom operation units 21a and 21b are exposed without being hidden in the grip unit 30b. In this embodiment, communication using the communication cable 37 has been described, but general wireless communication may be used. In this embodiment, the functions of the zoom operation units 21a and 21b are invalidated in S102, but a control signal for controlling a drive unit different from zoom such as focus drive and iris drive may be output in S102.

As described above, according to the present invention, by attaching and detaching the grip portion 30b as in the first embodiment, it is possible to realize an optimal holding state for a hand-held shooting mode and a shoulder-held shooting mode, and in both shooting modes, electric power is used. The zoom operation can be performed in an optimal holding state. Moreover, the grip part 30b can be fixed to an arbitrary position by using the communication cable 37 for communication.
As mentioned above, although preferable embodiment of this invention was described, it is not limited to these embodiment of this invention, A various deformation | transformation and change are possible in the range of the summary.

1a, 1b Lens device 6 Grip fixing screw part (detachable structure)
7 Grip fixed taper part (detachable structure)
21a, 21b Zoom operation unit (operation unit)
30a, 30b Grip part

Claims (10)

  A lens device having an optical element and a drive unit for driving the optical element, an operation unit for transmitting a control signal for controlling the drive of the drive unit, and a grip unit for holding the lens device A lens apparatus having an attaching / detaching structure for attaching / detaching the lens. The grip portion has a second operation portion for controlling driving of the optical element.
The lens device according to claim 1. The optical element is a zoom lens, and the drive unit is a zoom drive unit that drives the zoom lens,
The second operation unit controls driving of the zoom driving unit;
The lens apparatus according to claim 2.   The lens device according to claim 1, wherein the operation unit includes a pressing unit, and outputs a control signal by pressing the pressing unit. The optical element is a zoom lens, and the drive unit is a zoom drive unit that drives the zoom lens,
The operation unit controls driving of the zoom driving unit;
The lens device according to claim 1, wherein the lens device is a lens device.   The lens device according to claim 1, wherein the grip unit is attached to the lens device so as to cover the operation unit. An operation ring for driving the optical element disposed on the outer periphery of the lens barrel;
The lens device according to claim 1, wherein the operation unit is fixed to a fixing member provided on a radially outer side than the operation ring. A connection recognition unit for recognizing connection of the grip unit;
The lens device according to claim 1, wherein the connection recognition unit invalidates the operation of the operation unit in accordance with the recognition of the connection of the grip unit. A connection recognition unit for recognizing connection of the grip unit;
The connection recognition unit changes an operation target by the operation unit in accordance with recognition of the connection of the grip unit.
The lens device according to claim 1, wherein the lens device is a lens device.   An imaging apparatus comprising: the lens apparatus according to claim 1; and an imaging element that receives an optical image from the lens apparatus.

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