JPH11177863A - Operation unit for lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a user (photographer or the like) able to arbitrarily set for what the limited number of operation switch kinds provided on the limited position of the operation part of a zoom rate demand unit or the like are to be used respectively. SOLUTION: A function setting device 50 is provided between the operation part 30 provided with the plural operation switch kinds for operating an operation object including a lens for a television camera and driving means 43 and 44 or the like for operating the operation object such as a focus lens 41 and a zoom lens 42, etc., operated by the operation part 30. The function setting device 50 is provided with a changeover switch 52 and rotary switches 54, 56 and 58, etc., and the correspondence relation of the switch kinds of the operation part 30 and the operation objects operated by the switch kinds is changed by the changeover of the switches.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens operating device, and more particularly, to a TV camera lens operating device operated by a photographer.

[0002]

2. Description of the Related Art Conventionally, there are a zoom rate demand unit and a focus position demand unit as a lens operation device used in a broadcast camera. For example, in a zoom rate demand unit, a zoom operation means (sum ring) is used. Of course, other extender changeover switch, VTR start / stop switch, microphone for communication between photographer and control room ON / OFF
A microphone switch for turning off the camera, a return switch for displaying an image captured by another cameraman on the viewfinder, and the like are provided so that various operations can be performed.

[0003]

However, in a zoom rate demand unit or the like, the space for mounting the switches is limited, and it is all the more apt to be in a position with good operability. In addition, the position where the operability is felt to be good may differ depending on the user, and the necessary function may differ depending on the purpose of photographing.

The present invention has been made in view of such circumstances, and allows a user (a photographer or the like) to freely determine what a limited number of operating means provided at a limited position are used for. An object of the present invention is to provide a lens operation device that can be set.

[0005]

In order to achieve the above object, the present invention has a plurality of operation means for operating an operation object including a lens for a television camera, and is provided by a manual operation of the operation means. A lens operating device that operates the operation target based on an electric signal that is electrically connected between the plurality of operation units and the operation unit that operates the operation target. Function setting means for changing the correspondence with the operation target operated by the operation means is provided, and the functions of the plurality of operation means can be arbitrarily set.

That is, the electric signals output from the plurality of operation means are output to the means for operating the operation target via the function setting means. A signal is determined and output. For example, a conventional focus position demand can be set as an operation means for zooming, thereby making it possible to finely adjust the angle of view, which is difficult with a conventional zoom rate demand.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a lens operating device according to the present invention will be described below in detail with reference to the accompanying drawings. 1 and 2 are a plan view and a front view, respectively, showing an example of a zoom rate demand unit. In these drawings, 10 is a thumb ring, 12 and 14 are return switches, 16 is an intercom switch, 18 is an extender changeover switch, and 20 is a focal length limit ON.
The / OFF switch 22 is a reverse switch.

The thumb ring 10 is rotated by the right and left movements of the thumb when gripping the grip 11, and commands movement of the zoom lens in the tele direction or the wide direction. The first return switch 12 and the second return switch 14 are switches for displaying an image captured by another cameraman on the electronic viewfinder only while the button is pressed. The intercom switch 16 is a switch whose locking function is alternate or momentary depending on the tilting direction, and functions as a microphone switch for turning on / off a microphone for communication between the cameraman and the adjustment room.

A focal length limit ON / OFF switch 20
Is a switch for turning on / off the restriction of the focal length limited by the wide-side focal length restriction knob 24 or the tele-side focal length restriction knob 26. The reverse switch 22 is used to switch between the tele direction and the wide direction depending on the operation direction of the thumb ring 10. This is a slide switch for reversing the direction. 2
Reference numerals 8 and 29 are connectors to be connected to a lens for a television camera.

The functions of the above switches are functions in a normal use mode, and these functions can be arbitrarily set by a user or the like as described below. FIG. 3 is a schematic diagram of a television lens system including a lens operation device according to the present invention. In the figure, reference numeral 30 denotes an operation unit;
Is a lens body, 50 is a function setting device, and 60 is a camera. The operation unit 30 corresponds to, for example, a zoom rate demand unit. Here, for the sake of simplicity, a potentiometer 32 interlocking with thumb ring and three switches SW provided in the zoom rate demand unit are described.
1, only SW2 and SW3 are provided.

A lens body 40 of a lens for a television camera includes a focus lens 41, a zoom lens 42 including a variable power lens 42A and a correction lens 42B, and driving means for driving the focus lens 41 and the zoom lens 42, respectively. 43, 44, detectors 45 and 46 for detecting the positions of the focus lens 41 and the zoom lens 42, a function setting device 50, and the like are provided.

The lens body 40 is also provided with optical members such as a diaphragm, an extender lens, and a master lens, and driving means for driving these members, but these are omitted here. A function setting device 50, a changeover switch 52 corresponding to the potentiometer 32 of the operation unit 30;
The operation unit 30 has three rotary switches 54, 56, and 58 corresponding to the three switches SW1, SW2, and SW3. The changeover switch 52 includes a movable contact piece 52C.
Can be connected to the contact 52A or 52B. When the movable contact 52C is connected to the contact 52A, the output of the potentiometer 32 is applied to the driving means 43 of the zoom lens 42, and the movable contact 52C is connected to the contact 52B. Then, the output of the potentiometer 32 is applied to the driving means 44 of the focus lens 41.

The rotary switch 54 can connect the rotary contact 54D to one of the contacts 54A, 54B, 54C. When the rotary contact 54D is connected to the contact 54A, the output signal of the switch SW1 is output. When the rotary contact 54D is connected to the contact 54B as a signal for instructing start / stop of the VTR and the rotating contact 54D is connected to the contact 54B, the output signal of the switch SW1 displays an image captured by another cameraman on the electronic viewfinder. Signal R
When the rotary contact piece 54D is connected to the contact 54C, the output signal of the switch SW1 is output to the camera 60 as ET1, and the output signal of the switch SW1 is used as a signal RET2 for displaying an image captured by another cameraman on the electronic viewfinder. It is output to 60. That is, by connecting the rotary contact piece 54D of the rotary switch 54 to the contact point 54A, 54B or 54C, the switch SW1 can function as a start / stop switch and first and second return switches of the VTR, respectively.

Similarly to the rotary switch 54, the rotary switches 56 and 58 have a switch SW2 and a switch S
W3 can function as a VTR start / stop switch and first and second return switches.
By switching the changeover switch 52 of the function setting device 50 having the above configuration, the output of the potentiometer 32 based on the operation of the zoom rate demand is output to the focus lens 4.
1 can be added to the driving unit 44 for driving the zoom unit 1, and the zoom rate demand can be set as the operating unit for focusing. Similarly, although not shown, the output of the potentiometer based on the operation of the focus position demand can be applied to the driving means 43 for driving the zoom lens 42, and the focus position demand can be set as the operation means for zooming. it can.

By rotating the rotary switches 54, 56 and 58 of the function setting device 50 to appropriate positions, the switches SW1, SW2 and SW3 are switched to the start / stop switch of the VTR, the first and second return switches. Can be assigned to The present invention is not limited to this embodiment, and the switches of the operation unit can be assigned to arbitrary functions by using the mechanism setting device according to the present invention. The function setting device may be provided in either the operation section or the lens body, and may be provided in both of them if the priority order is determined. Further, the function setting device is not limited to a mechanical switch, and can be easily realized by an IC circuit which can transfer a signal once input from the operation unit to a necessary portion according to an input to a control terminal.

[0016]

As described above, according to the lens operating device according to the present invention, a limited number of operations provided at a limited position of an operation unit such as a zoom rate demand unit and a focus position demand unit are provided. The user (a photographer or the like) can arbitrarily set what switches are used for, which makes it unnecessary to purchase expensive specially-specified operation units, which is very convenient.
Also, the functions of the operation switches can be changed so that they are easy to operate according to the shooting purpose. Furthermore, even when a single broadcast camera is shared by a plurality of photographers, the operation switches can be easily used by each photographer. There is an advantage that the kind of function can be changed.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a zoom rate demand unit.

FIG. 2 is a front view of the zoom rate demand unit of FIG. 1;

FIG. 3 is a schematic diagram of a television lens system including a lens operating device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 30 ... Operation part 32 ... Potentiometer 40 ... Lens main body 41 ... Focus lens 42 ... Zoom lens 43, 44 ... Driving means 50 ... Function setting device 52 ... Changeover switch 54, 56, 58 ... Rotary switch 60 ... Camera SW1, SW2, SW3 …switch

Claims (1)

[Claims] An operation of a lens having a plurality of operation means for operating an operation object including a lens for a television camera, and operating the operation object based on an electric signal output by manual operation of the operation means. In the apparatus, the device is electrically connected between the plurality of operation units and a unit that operates the operation target, and changes a correspondence relationship between the plurality of operation units and an operation target operated by the plurality of operation units. A lens operating device comprising a function setting means, wherein the functions of the plurality of operation means can be arbitrarily set.