JP2016157034A - Lens supporting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lens supporting device that can attach a lens to a camera, each having a different mount shape and an electric/optical interface.SOLUTION: A lens supporting device is disposed between a lens and a camera, and the lens is supported by a supporting member of a tripod. The lens supporting device includes: a first mount part for attaching the lens; a second mount part for attaching the camera; a power supply input part for inputting a power supply for driving the lens; and a communication data conversion part for converting communication data from the lens and the camera.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lens support device for supporting a lens.

  Conventionally, when a broadcast lens is used, a broadcast television camera is attached. Depending on the shooting conditions, a large-sized broadcasting lens and a broadcasting handy camera that can be carried on the shoulder are attached using a lens supporter (see Patent Document 1).

  In recent years, there has been an increasing demand for miniaturization and cost reduction of broadcasting equipment, and there are cases in which a still image shooting camera with a movie shooting function is attached to a still image shooting interchangeable lens to shoot movies and the like. It was.

JP 2005-148330 A

  However, in the conventional method described above, the shape of the mount portion for attaching the lens and the camera is different between the broadcasting lens / camera and the still image shooting lens / camera. Furthermore, electrical interfaces such as power supply voltage and communication protocol, and optical interfaces such as flange back and image size were also different.

  For this reason, only a broadcast camera can be attached to the broadcast lens, and a still image shooting interchangeable lens with a moving image shooting function can be attached only. In order to realize an unprecedented new video expression, a countermeasure for realizing compatibility between a broadcasting lens / camera and a still image shooting lens / camera has been desired.

  An object of the present invention is to provide a lens support device capable of mounting a lens and a camera having different mount shapes and electro-optical interfaces.

  In order to achieve the above object, the present invention is a lens support device that is disposed between a lens and a camera and supports the lens on a support member such as a tripod. A second mount portion for mounting the camera; a power input portion for inputting power for driving the lens; and a communication data conversion portion for converting communication data from the lens and the camera. It is characterized by.

  According to the lens support device of the present invention, it is possible to obtain an effect that enables mounting of a lens and a camera having different mount shapes and electrical / optical interfaces.

FIG. 3 is a configuration diagram of the first embodiment. 3 is a flowchart for explaining the operation of the first embodiment. It is a block diagram of the 2nd Example.

[Example 1]
Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a block diagram of a system including a lens support device in a first embodiment to which the present invention can be applied.

  Reference numeral 100 denotes a broadcast lens with a lens drive unit that can be attached to and detached from a broadcast camera (not shown), 200 is a lens support device, and 300 is a still image with a moving image shooting function that can be attached to and detached from a still image shooting interchangeable lens. It is a shooting camera (hereinafter referred to as a still image camera). Reference numeral 400 denotes an external power source for supplying power to the broadcasting lens 100 and the lens support device 200.

  Reference numeral 101 denotes a focus unit for adjusting the focus of the subject image, reference numeral 102 denotes a position detection unit for detecting the position of the focus unit 101, and reference numeral 103 denotes a lens power source for supplying power to the position detection unit 102 and the like. Part. Next, 104 is a lens communication unit for performing data communication with a broadcast camera (not shown), and 105 is a lens control unit for controlling the focus unit 101. Furthermore, 106 is a motor for driving the focus unit 101 in accordance with the output of the lens control unit 105, and 107 is a broadcast lens mount for mounting on a broadcast camera (not shown).

  Subsequently, 201 is a broadcast camera mount for attaching the broadcast lens 100, and 202 is a still image shooting lens mount for attaching the still image camera 300. Reference numeral 203 denotes a flange back conversion lens group for converting the flange back of the broadcast lens 100 into a flange back equivalent to a still image photographing lens, and 204 denotes a power input unit for inputting power from the outside. Next, reference numeral 205 denotes a detachable battery for supplying power to the lens support device 200 and the broadcast lens 100.

  Reference numeral 206 denotes a power supply switching unit for switching the power supplied to the lens support device 200 and the broadcast lens, and reference numeral 207 denotes a changeover switch for selecting the power supplied to the lens support device 200 and the broadcast lens 100. . A communication control unit 208 communicates with the broadcast lens 100 and the still image camera 300.

  Next, 301 is a still image shooting camera mount for attaching a still image shooting lens, 302 is a camera control unit for controlling various functions of the still image camera 300, and 303 is for still image shooting (not shown). It is a camera communication part for communicating with an interchangeable lens. In this embodiment, the communication control unit 208 of the lens support device 200 is realized by the CPU 210.

  The operation of the communication control unit 208 realized by the CPU 210 will be described in detail below with reference to the flowchart of FIG. First, when a power switch (not shown) arranged in the still image camera 300 is turned on and power is supplied from the external power source 400 to the power input unit 204, the CPU 210 proceeds to S101 and communicates with the still image camera 300. Is initialized. At this time, it is assumed that the changeover switch 207 is set to the external power supply mode. Next, if the communication initialization with the still image camera 300 is completed, the process proceeds to S102. The communication with the broadcast lens 100 is initialized. If the initialization is completed, the process proceeds to S103, and the state of the changeover switch 207 is input. To do.

  If the changeover switch 207 is set to the external power supply mode in S103, the process proceeds to S104, and the power supply switching unit 206 is maintained in the external power supply mode. On the other hand, if the changeover switch 207 is set to the battery mode in S103, the process proceeds to S105, the power supply switching unit 206 is switched to the battery mode, and power is supplied from the battery 205 to each unit. By supplying the power from the external power source 400 or the battery 205 to the lens support device 200 and the broadcasting lens 100 in this manner, the broadcasting lens 100 can be used even when the power supply voltage of the still image camera 300 is low or when the power supply is low. Can be driven.

  Returning to the description of FIG. The CPU 210 proceeding to S104 and S105 proceeds to S106 in both cases, and determines whether or not a communication command has been received from the still image camera 300. When a communication command is received from the still image camera 300 in S106, the process proceeds to S107, and the communication command received from the still image camera 300 is converted into a broadcast lens transmission command. In S108, the converted broadcast lens transmission command is transmitted to the broadcast lens 100, and the process proceeds to S109.

  In this way, communication between the broadcasting lens 100 and the still image camera 300 is performed by converting the communication data having different communication protocols into the lens support device so that the communication control unit 208 converts the data so as to conform to the different communication protocols. Is possible. On the other hand, if a communication command is not received from the still image camera 300 in S106, the process jumps to S109 without doing anything.

  Next, the CPU 210 proceeding to S109 determines whether a command has been received from the broadcast lens 100 or not. When a command is received from the broadcast lens 100 in S109, the command received from the broadcast lens 100 proceeding to S110 is converted into a still image camera transmission command. Then, the process proceeds to S111, the converted still image camera transmission command is transmitted to the still image camera 300, and the process jumps to S103. On the other hand, if a communication command is not received from the broadcast lens 100 in S109, the process jumps to S103 without doing anything.

  Further, when the power switch (not shown) disposed in the still image camera 300 is turned on, the changeover switch 207 is set to the battery mode, and the same effect can be obtained even when the battery 205 is charged.

  Thereafter, S103 to S111 are repeatedly executed until the power supply to the lens support device 200 is cut off.

[Example 2]
FIG. 3 is a configuration diagram of a system including the lens support device in the present embodiment. The same components as those in FIG. 1 are denoted by the same reference numerals as those in FIG.

  Reference numeral 500 denotes a still image shooting interchangeable lens (hereinafter referred to as a still image lens) that can be attached to and detached from a still image shooting camera with a moving image shooting function (not shown), 600 is a lens support device, and 700 is a broadcast (not shown). It is a broadcasting camera to which a lens can be attached and detached. Reference numeral 501 denotes a lens communication unit for data communication with a still image shooting camera with a moving image shooting function (not shown), and reference numeral 502 denotes a still image shooting to be attached to a still image shooting camera with a moving image shooting function (not shown). Interchangeable lens mount.

  Next, reference numeral 601 denotes a still image photographing interchangeable lens mount for attaching the still image lens 500, and reference numeral 602 denotes a broadcasting lens mount for attaching the broadcasting camera 700. Reference numeral 603 denotes a flange back conversion lens group for converting the flange back of the still image lens 500 into a flange back equivalent to a broadcast lens. Reference numeral 604 denotes a lens support unit for connecting the still image lens 500 to the lens support device 600, and reference numeral 701 denotes a broadcast camera mount for attaching a broadcast lens.

  Since the operation of the communication control unit 208 realized by the CPU 210 is the same as that of the first embodiment, description thereof is omitted.

  As described above, the communication control unit 208 arranged in the lens support device converts the communication data having a different communication protocol to convert the data so as to be compatible with the different communication protocol, whereby communication between the still image lens 500 and the broadcast camera 700 is performed. Is possible.

100 broadcasting lens, 101 focus unit, 102 position detection unit,
103 lens power supply unit, 104 lens communication unit, 105 lens control unit,
106 motor, 200 lens support device, 201 broadcast camera mount,
202 Lens mount for still image shooting, 203 Flange back conversion lens group,
204 power input unit, 205 battery, 206 power supply switching unit,
207 changeover switch, 208 communication control unit,
300 Still image shooting camera with movie shooting function, 301 Still image shooting camera mount,
302 Camera control unit, 303 Camera communication unit, 400 External power supply

Claims (5)

In a lens support device disposed between a lens and a camera and supporting the lens on a support member of a tripod,
A first mount for attaching the lens;
A second mount for mounting the camera;
A power input unit for inputting the power for driving the lens;
A lens support device, comprising: a communication data conversion unit for converting communication data from the lens and the camera. The lens support device according to claim 2, wherein the lens support device includes a flange-back conversion lens group between the first mount portion and the second mount portion. The lens support device includes a battery that outputs a voltage usable for the lens, a power source from the power input unit, and a power source switching unit for switching between the power source from the battery. The lens support device described in 1. The lens support device according to claim 1, wherein the lens support device outputs a signal for instructing a digital zoom function to the camera. 2. The lens support device according to claim 1, wherein either the electrical contact disposed on the first mount portion or the electrical contact disposed on the second mount portion is mounted on the FPC. The lens support device described in 1.