JPH10325918A - Zoom lens device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a zoom lens device capable of setting a manipulating environment such as a zooming extent in accordance with a user's desire by providing a user-setting function on a lens device side. SOLUTION: Set information on a lens control such as the zooming extent and the highest speed is inputted through the writing device 62 of a personal computer and then the information set by the user is stored in the user data storing part 58 of a storing device 56. Then control signals for controlling to drive various driving means 34, 44, 48 and 52 are outputted by a CPU 40 based on the set information stored in the storing device 56 and the command signal inputted from a controller 36 and then the lens is operated so as to be suitable to the set contents. Besides, standard set data (initial data) at the forwarding from a factory is stored in the initial data storing part 60 of the storing device 56 and the switching from the user-setting to the initial setting and the reverse is enabled in accordance with the selecting operation of a setting/selecting device 64.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a zoom lens device, and more particularly, to a zoom lens device used for a broadcast television camera or the like.

[0002]

2. Description of the Related Art A zoom lens device used in a broadcast television camera is detachably connected to a controller, and controls operations such as iris, zoom, and focus based on a control signal output from the controller in response to an external operation. Is done. In recent years, it has been proposed that this controller is equipped with a volume knob and a zoom speed variable dial that sets the limit of the zoom operation range, and that the controller can set the operation environment such as the restriction of the zoom operation range and the way of movement to the user's preference. ing.

[0003]

However, in the conventional zoom lens apparatus, setting means for setting an operating range such as zoom is provided on the controller side, and each time a controller is replaced, a new setting operation is performed by each controller. It had to be complicated. In addition, there is a problem that a special lens controller having a setting unit must be used to perform the above-described user setting.

The present invention has been made in view of such circumstances, and has a user setting function on the lens side so that an operation environment can be set to suit the user's preference without changing the current controller. It is intended to provide a device.

[0005]

According to the present invention, there is provided a focus driving device for driving a focus lens group, a zoom driving device for driving a zoom lens group, an iris driving device for driving an iris, and an extender. It has at least one of the extender driving means for driving the lens, and the driving means is driven based on a command signal output from the controller in accordance with the operation of the operation member of the controller, and zoom, focus, iris, etc. In the zoom lens device in which the lens operation is performed, input means for inputting setting information relating to control of the lens operation, storage means for storing the setting information input from the input means, and a command signal from the controller are input. Then, according to the setting information stored in the storage unit, the driving unit It is characterized by and a control unit for controlling the driving by the lens operation.

According to the present invention, when the setting information relating to the control of the lens operation is input by the input means, the setting information is stored in the storage means, and the setting information is referred to at the time of the lens operation according to the external operation of the controller. Is done. As described above, since the user setting function is provided on the lens device side,
A desired control environment can be set independently of the controller.

The items set by the user include, for example, a zoom operation range, a zoom speed, a focus operation range, a focus speed, an iris operation range, an iris speed, a designation of an operation direction with respect to an operation direction of an operation member of a controller, and an extender selection button. And the switching speed of the extender. In addition, initial setting information relating to control of the lens operation is stored in the second storage means, and the setting information to be used among the setting information stored in the storage means and the initial setting information stored in the second storage means is used. May be switched according to the selection operation of the selection means.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a zoom lens device according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows an example in which the zoom lens device according to the present invention is applied to a television camera for broadcasting. The optical system of the zoom lens device 10 includes a focus lens 12 and a variator lens 1 from the front (left side in the drawing) of the photographing optical axis L.
4. The compensator lens 15, the iris 16, the front relay 18, the extender 20, and the rear relay 22 are sequentially arranged. Each lens group is shown in a simplified manner in FIG. 1, but is composed of one or more lenses.

The subject light that has passed through the zoom lens device 10 passes through the color separation prism 26 of the television camera 24,
An image is formed on the CCDs 28, 30 and 32. Each CCD2
The image signals of the subject image photoelectrically converted in 8, 30, and 32 are transmitted to a viewfinder, a video signal output terminal, and the like via a signal processing circuit (not shown). The focus driving unit 34 that drives the focus lens 12 includes:
It includes a focus motor (not shown), and the central processing unit (CP)
U) The drive is controlled based on the control signal output from 40. When the driving force of the focus driving unit 34 is transmitted to the focus lens 12, the focus lens 12 moves back and forth along the photographing optical axis L, and focus adjustment is performed.

Further, a potentiometer 42 for detecting the position of the focus lens 12 is provided, and a detection signal of the potentiometer 42 is supplied to an A / D converter (not shown).
The PU 40 is notified. The variator lens 14 and the compensator lens 15 are engaged with a cam groove of a zoom cam barrel (not shown).
Is rotationally driven by the driving force. The zoom driving unit 44 includes a zoom motor (not shown), and is driven and controlled based on a control signal output from the CPU 40 in response to an operation of a zoom operation member of the controller 36.

When the zoom cam barrel rotates, the variator lens 14 and the compensator lens 15 move toward and away from each other along the photographing optical axis L by the action of the cam groove, and the magnification is adjusted. Further, a potentiometer 46 for detecting the amount of rotation of the zoom cam barrel corresponding to the zoom position is provided, and a detection signal of the potentiometer 46 is notified to the CPU 40 via an A / D converter (not shown).

The iris driving means 48 for driving the iris 16 includes an iris motor (not shown), and is driven and controlled based on a control signal output from the CPU 40 in response to an operation of an iris operating member of the controller 36. When the driving force of the iris driving means 48 is transmitted to the iris blade, the aperture is expanded and contracted to perform iris adjustment. Also,
A potentiometer 50 for detecting an iris position is provided, and a detection signal of the potentiometer 50 is notified to the CPU 40 via an A / D converter (not shown).

The extender 20 is, for example, a standard (×
1) Three types, ie, double (× 2) and triple (× 3) are prepared, and when the driving force of the extender driving means 52 is transmitted, the holding plate (not shown) of the extender 20 rotates,
An extender lens having a desired magnification advances and retracts within the photographing optical axis L. The extender driving means 52 includes an extender motor (not shown),
The drive is controlled based on a control signal output from the CPU 40 in response to an operation of pressing an extender selection button (not shown). Further, a sensor 54 for detecting the magnification of the extender 20 is provided, and a detection signal of the sensor 54 is notified to the CPU 40.

The controller 36 is means for outputting to the CPU 40 a signal (command signal) for commanding operations such as zoom, focus, iris, and extender in accordance with an external operation. Although the configuration of the controller 36 is not shown in detail in the figure, the zoom control unit of the controller has a zoom operation member that commands the zoom tele / wide direction and the zoom speed, and operates the zoom operation member. Is output to the CPU 40.

Similarly, the focus control unit and the iris control unit of the controller 36 have a focus operation member and an iris operation member, respectively, and output a command signal corresponding to the operation of each operation member to the CPU 40. Further, the extender control unit has an extender selection button for selecting the magnification of the extender and a setting display button (PJ button) for displaying a setting screen, and outputs a command signal corresponding to the button operation to the CPU 40.

The CPU 40 controls the operation of each drive means (34, 44, 48, 52) such as the zoom drive means 34 based on a command signal input from the controller 36. At this time, the CPU 40 refers to the setting data stored in the storage device 56 and outputs a control signal corresponding to the setting to each of the above-described driving units. The storage device 56 has a user data storage unit 58 for storing data (user data) set by the user, and an initial data storage unit 60 for storing data (initial data) set at the time of factory shipment. .

The contents that can be set by the user include, for example, a zoom operation range, a zoom speed, a maximum zoom operation speed, a minimum zoom operation speed, a focus operation range,
Focus speed, iris operating range, iris speed,
Set the focus operation direction with respect to the operation direction of the focus ring (operation member), set the movement method whether to operate linearly or logarithmically according to the operation amount of the operation member, and set the priority of the extender selection button There are settings, whether or not the selection of the extender can always be given the boost priority, and the switching speed of the extender.

The user can use a writing device 6 such as a personal computer.
The various setting data described above is input to the user data storage unit 58 of the storage device 56 via the control unit 2. As a method of inputting (writing) the setting data, desired data may be created on a screen of a personal computer, and a PC card or the like on which the data is recorded may be inserted into the zoom lens device 10. Alternatively, the personal computer and the zoom lens device 10 may be connected by a cable, and data created by the personal computer may be directly input to the zoom lens device 10 via the cable.
Furthermore, as an aspect of the writing device 62, it is also conceivable to sequentially set the zoom operation range, the maximum zoom speed, and the like while using the controller 36 in addition to a personal computer using a writing switch box.

Further, among the user data stored in the storage device 56 via the writing device 62 and the initial data stored in the initial data storage section 60, setting data for selecting setting data to be reflected in actual control is selected. Setting selection device 64
Is provided. The setting selection device 64 has switch means (not shown) and outputs to the CPU 40 a selection signal indicating which of the user setting and the initial setting is to be used in accordance with the operation of the switch means.

The CPU 40 reads either user data or initial data from the storage device 56 in accordance with a selection signal input from the setting selection device 64, and sets the setting means. Next, the operation of the zoom lens device configured as described above will be described with reference to the flowchart shown in FIG.

First, the main power supply of the television camera 24 is turned on to start various processes by the CPU 40 (step S).
10). Then, the user data (user setting information) input via the writing device 62 is stored in the user data storage unit 58 of the storage device 56 (step S1).
2). This user setting writing step is performed when necessary, such as when changing settings, and is omitted when there is no change in user data.

Next, the setting selection information selected by the setting selection device 64 is read (step S14), and it is determined whether to use the user setting information stored in the storage device 56 (step S16). If the result of determination in step S16 is that user settings are to be used, user data is read from the user data storage unit 58 of the storage device 56 (step S18), and zoom, focus, iris, extender ( EX
T. The setting of each setting means is performed (step S2).
0). Thus, the setting process of the control environment is completed (Step S24), and thereafter, based on the command signal input from the controller, the lens operation control that matches the above-described user setting is performed.

On the other hand, if the result of determination in step S16 is that the initial setting is to be used, the initial data is read from the initial data storage unit 60 of the storage device 56 and set in the control environment corresponding to the initial setting information (step S22). ). Thus, when the setting process is completed (step S24),
Based on a command signal input from the controller 36, lens operation control that matches the initial setting is performed.

This allows the user to enter the controller 36
A desired control environment can be set and changed independently of the zoom lens device 10 in a desired operation range and manner of movement.
Can be operated.

[0025]

As described above, according to the zoom lens device of the present invention, the user setting function is provided on the zoom lens device side, so that the operating range and the operating range suited to the user can be changed without changing the current controller. The lens settings can be changed so that the lens can be operated in the manner of movement.

Further, initial setting information relating to control of the lens operation is stored in the second storage means, and the setting information input from the input means and the initial setting information stored in the second storage means can be selectively used. Therefore, for example, there is an advantage that the user can freely select and use the settings originally input by the user and the standard settings (initial settings) at the time of factory shipment.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a zoom lens device according to the present invention.

FIG. 2 is a flowchart showing the operation of the zoom lens device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Zoom lens apparatus 12 ... Focus lens 14 ... Variator lens 15 ... Compensator lens 16 ... Iris 20 ... Extender 24 ... Television camera 34 ... Focus drive means 36 ... Controller 40 ... Central processing unit (CPU) 44 ... Zoom drive means 48 ... Iris drive means 52 ... Extender drive means 56 ... Storage device 58 ... User data storage unit 60 ... Initial data storage unit 62 ... Write device 64 ... Setting selection device

Claims (3)

[Claims] At least one of a focus driving unit for driving a focus lens group, a zoom driving unit for driving a zoom lens group, an iris driving unit for driving an iris, and an extender driving unit for driving an extender lens. A zoom lens device comprising: a driving unit that is driven based on a command signal output from the controller in response to an operation of an operation member of the controller, and performs lens operations such as zoom, focus, and iris. Input means for inputting setting information relating to the input means; storage means for storing the setting information input from the input means; when a command signal is input from a controller, the drive is performed in accordance with the setting information stored in the storage means. Control means for driving and controlling the means to perform a lens operation; A zoom lens and wherein the was e. 2. The setting information includes a zoom operation range, a zoom speed, a focus operation range, a focus speed, an iris operation range, an iris speed, a designation of an operation direction with respect to an operation direction of an operation member of a controller, and a priority order of an extender selection button. 2. The zoom lens apparatus according to claim 1, wherein the zoom lens apparatus includes at least one of setting information of the designation of the extension and the switching speed of the extender. A second storage unit storing initial setting information relating to control of the lens operation; a setting information input from the input unit and stored in the storage unit, and stored in the second storage unit; A selection unit for selecting setting information to be used from among initial setting information, and a switching unit for switching setting information referred to by the control unit in accordance with a selection operation of the selection unit. 1. Zoom lens device.