JP2006039388A - Imaging device and interchangeable lens system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photographing apparatus capable of zooming at a predetermined speed with a preset function and a normal zoom speed being variable in an image pickup apparatus. The operability was not enough.
SOLUTION: Selection means for selecting whether the moving speed of the moving lens is the output of the first speed setting means or the second speed setting means, and the first speed selection means sets the speed in accordance with the operation and the driving direction. A speed setting means that also serves as a command means that also serves as a command means that does not output a drive command when there is no operation, and the control means uses the set speed of the second speed setting means as the speed of the moving lens group when the preset function is executed. Imaging device to do.
[Selection] Figure 1

Description

  The present invention relates to an imaging device integrated with a lens camera, an imaging device such as a camera for taking a still image and a moving image, and an interchangeable lens system including a replaceable lens device and an imaging device equipped with the lens device. It is about.

  FIG. 8 is a block diagram of a conventional example.

  In the figure, reference numeral 1 denotes an optical system, which comprises a four-group rear focus zoom lens (hereinafter referred to as “RFZ lens”) composed of four lens groups. The RFZ lens 1 includes a first lens group (hereinafter referred to as “front lens”) 101 which is a fixed lens group, a second lens group (hereinafter referred to as “variator”) 102 which has a zooming function which is a moving lens group, A third lens group (hereinafter referred to as “afocal”) 103 that is a fixed lens group, a focus function that is a moving lens group, and a fourth function that functions as a compensator that corrects image plane variation due to zooming. Lens group (hereinafter referred to as “RR”) 104.

  Actually, the lens group is composed of a plurality of lenses, but the number of components of each lens group is not particularly limited.

  2 is a photoelectric conversion element such as a CCD, 3 is a diaphragm member for adjusting the amount of light incident on the photoelectric conversion element 2, and 4 is a diaphragm member 3 by a diaphragm driving means so that the amount of light incident on the photoelectric conversion element 2 is constant. Is driven by the control means 7. Reference numeral 5 denotes an aperture position detection means, and 6 denotes a detection circuit that detects the output of the aperture position detection means 5 and outputs it to the control means 7.

  Reference numerals 8 and 9 denote driving means such as step motors for driving the moving lens groups 102 and 104, and reference numerals 10 and 11 denote drivers for driving the driving means 8 and 9.

  Reference numeral 12 denotes an amplifier that amplifies the output of the photoelectric conversion element 2, reference numeral 13 denotes a process circuit that generates an AF signal for converting the signal into a signal such as an NTSC video signal, and AF, and reference numeral 14 denotes an AF operation based on the AF signal from the process circuit. AF means. In the AF method, a hill-climbing type has been proposed and is well known by the following Patent Document 1 and the like, and thus detailed description thereof is omitted here.

  Reference numeral 15 denotes a seesaw switch for a zoom operation, which is a volume. In the non-operating state, the driving is stopped with the neutral point held, and the speed is changed by the driving direction and the pressing depth by the operation on the seesaw pressing side.

  Reference numeral 18 denotes a preset storage switch, and 19 denotes a preset execution switch. The control unit 7 stores the zoom position when the preset storage switch is operated. When the preset execution switch 19 is operated, the zoom position is compared with the current zoom position. A preset function for zooming to the storage position is performed.

The speed at the time of execution of a preset function used in a video input device such as a video camera is variable depending on how and when the seesaw key is pressed, or at a predetermined speed.
JP-A-62-103616 JP 2004-094201 A

  In recent years, there has been a fierce competition for high-value-added lenses and high-functionality in imaging devices such as cameras, and as a function to widen the shooting range, a preset function that zooms to a predetermined storage position by a predetermined operation is strongly installed. On the other hand, it is desirable to provide a photographing apparatus that can simultaneously perform zooming at a predetermined speed with a normal zoom speed, a seesaw key, and a variable speed.

  However, mounting these functions at the same time involves complicated operations in the setting and leads to loss of photographing opportunities.

  Further, in the case of an interchangeable lens system, there may be a problem that the speed at which the preset function is executed cannot be changed depending on the combination of the camera and the interchangeable lens.

  The present invention has been made paying attention to the above-mentioned problems, and is provided with a speed selection dial in the photographing apparatus to perform zooming at a fixed speed or use it for selection of a preset speed, thereby improving operability and detail. An object of the present invention is to provide an imaging apparatus and an interchangeable lens system that can widen the imaging range by realizing the speed setting.

  In order to solve the above problems, the following means are proposed.

  A moving lens group for focus adjustment that moves on the optical axis in an imaging device that includes an imaging unit that performs imaging and a lens that forms an object image on a predetermined surface by an optical system including a moving lens group that moves on the optical axis; Lens driving means for forming an object image on a predetermined surface by an optical system including the moving lens group for zooming, driving the moving lens group, position detecting means for detecting the position of the moving lens group, predetermined operation A preset function for storing the position of the moving lens group and moving to a predetermined storage position, first and second speed setting means for setting the moving speed of the moving lens group, and control means for controlling the driving of the moving lens Selection means for selecting whether the moving speed of the moving lens is the output of the first speed setting means or the second speed setting means, and the first speed selection means sets the speed in accordance with the operation and drives in the driving direction. Also serves as an instruction operation Speed setting means that also serves as command means that does not output a drive command when there is no operation, and the control means sets the speed set by the second speed setting means as the speed of the moving lens group when the preset function is executed. Proposes an imaging device.

  Further, in the interchangeable lens system, in a photographing apparatus including an interchangeable lens that forms an object image on a predetermined surface by an optical system including a camera having an imaging unit and a moving lens group that moves on an optical axis that is detachable from the camera. The interchangeable lens is a lens that forms an object image on a predetermined surface by an optical system including a moving lens group for focus adjustment that moves on an optical axis and the moving lens group for zooming, and drives the moving lens group Drive means, position detection means for detecting the position of the moving lens group, and control means for controlling the lens by communicating with the camera, wherein the camera sets a moving speed and direction of the moving lens. A second speed setting unit that sets a moving speed of the moving lens; a setting unit; a communication unit that communicates the moving speed and direction of the lens to the lens; and a control unit that controls the camera. The presence or absence of stage to propose an imaging apparatus characterized by communicating to the lens.

  From the above description, according to the present invention, by using the output of the speed selection dial for setting the speed at the time of executing the preset function, the preset function for easily changing the speed as well as zooming at a fixed speed is installed. Can be realized at the same time, and the range of photography can be expanded without missing photo opportunities.

  Further, in the case of an interchangeable lens system, by communicating information on the speed selection dial, it becomes possible to perform photographing without any problem even by a combination of a camera and an interchangeable lens.

  The best mode for carrying out the present invention will be described below based on examples.

[First embodiment]
FIG. 1 is a block diagram of an embodiment of the present invention.

  In the figure, reference numeral 1 denotes an optical system, which comprises a four-group rear focus zoom lens (hereinafter referred to as “RFZ lens”) composed of four lens groups. The RFZ lens 1 includes a first lens group (hereinafter referred to as “front lens”) 101 which is a fixed lens group, a second lens group (hereinafter referred to as “variator”) 102 which has a zooming function which is a moving lens group, A third lens group (hereinafter referred to as “afocal”) 103 that is a fixed lens group, a focus function that is a moving lens group, and a fourth function that functions as a compensator that corrects image plane variation due to zooming. Lens group (hereinafter referred to as “RR”) 104.

  Actually, the lens group is composed of a plurality of lenses, but the number of components of each lens group is not particularly limited.

  2 is a photoelectric conversion element such as a CCD, 3 is a diaphragm member for adjusting the amount of light incident on the photoelectric conversion element 2, and 4 is a diaphragm member 3 by a diaphragm driving means so that the amount of light incident on the photoelectric conversion element 2 is constant. Is driven by the control means 7. Reference numeral 5 denotes an aperture position detection means, and 6 denotes a detection circuit that detects the output of the aperture position detection means 5 and outputs it to the control means 7.

  Reference numerals 8 and 9 denote driving means such as step motors for driving the moving lens groups 102 and 104, and reference numerals 10 and 11 denote drivers for driving the driving means 8 and 9.

  Reference numeral 12 denotes an amplifier that amplifies the output of the photoelectric conversion element 2, reference numeral 13 denotes a process circuit that generates an AF signal for converting the signal into a signal such as an NTSC video signal, and AF, and reference numeral 14 denotes an AF operation based on the AF signal from the process circuit. AF means. In the AF method, a hill-climbing type has been proposed and is publicly known from Japanese Laid-Open Patent Publication No. Sho 62-103616, etc., and detailed description thereof is omitted here.

  Reference numeral 15 denotes a seesaw switch for a zoom operation, which is a volume. In the non-operating state, the driving is stopped with the neutral point held, and the speed is changed by the driving direction and the pressing depth by the operation on the seesaw pressing side.

  Reference numeral 16 denotes a speed selection dial whose output changes depending on the change of the dial position. An increment counter or volume may be used.

  Reference numeral 17 denotes a zoom mode selection switch for selecting whether the zoom speed is performed at the depth of the seesaw switch 15 or the output of the speed selection dial 16.

  For example, when the zoom speed is set by the seesaw switch 15, mode 1 is selected. When mode 2 is selected, the zoom command is issued by the seesaw switch 15, but the zoom can be performed at the speed selected by the speed selection dial. With this function, it is possible to provide a zoom operation suitable for the shooting situation by selecting mode 1 when shooting at various speeds and selecting mode 2 when zooming at a constant speed.

  18 is a preset storage switch, 19 is a preset execution switch, and the control unit 7 stores the zoom position when the preset storage switch 18 is operated, and is compared with the current zoom position by the operation of the preset execution switch 19. Then, a preset function for zooming to the storage position is performed.

  Here, the speed at the time of preset execution can be improved by using the output of the speed selection dial 16 described above, and the speed at the time of preset can be varied by changing the speed according to the dial position. It can be arbitrarily set according to.

  Next, the flow of the control unit 7 is shown in FIG.

  The control unit 7 determines whether or not the preset is executed in 201, returns if not executed, and compares the storage position and the current position in 202 if executed. If the current position is the same as the storage position, the flow is exited. If the current position is different from the current position, the drive position is obtained by comparing with the storage position in 203. Next, in 204, the output of the speed selection dial is read, the corresponding speed is obtained from the output, the zoom is driven in 205, the comparison with the storage position is performed in 202, and the same processing is performed until they become the same.

  In this example, the speed can be changed by operating the speed selection dial even during preset execution.

  Therefore, an appropriate preset speed can be easily obtained by operating the speed selection dial during preset execution, and the space on the exterior of the limited photographing device can be used in combination with other functions so that the space can be used effectively. Become.

  Although not shown, the speed selection dial 16 may be used as a speed setting means for the focus preset when it has a focus preset function.

[Second Embodiment]
The second embodiment will be described.

  FIG. 3 is a block diagram showing the present embodiment, and the same parts as those in the first embodiment are omitted.

  The present invention shows an embodiment of an interchangeable lens type.

  The camera unit control means 20 controls the lens unit control via the camera contact 22 and the lens contact 23 for the output of the process circuit 13 for generating the zoom key command of the camera and the focus signal for AF, the output for the aperture operation, and the like. Communication is made with the means 7. The lens unit control means 7 performs zoom yAF and diaphragm operation based on the information, and the respective control means can transmit and receive such as transmitting the zoom position focus position, the diaphragm position, etc. to the camera unit control means.

  The seesaw switch 15, the speed selection dial 16, and the zoom mode selection switch 17 for zoom operation described above are provided in the camera, and the preset storage switch 18 and the preset execution switch 19 are provided in the lens.

  When the seesaw switch 15 is operated, the camera control means 20 selects the speed and speed of the speed selection means from the state of the seesaw switch 15 when the zoom mode selection switch 17 selects the seesaw switch 15. When it is, the direction communicates the speed from the state of the seesaw switch 15 and the speed from the speed selection dial 16.

  At this time, when the seesaw switch 15 is not operated, the driving direction is not communicated, and only the speed information obtained from the state of the speed selection dial 16 is communicated to the lens.

  Since the lens does not have a driving direction command, the zoom operation is not performed. Then, it is proposed to use the speed information at this time as the preset speed as the speed when executing the preset function of the lens.

  In other words, by communicating the output of the camera speed selection means other than the drive command for zoom to the lens as a means for changing the preset speed, it becomes possible to set a precise preset speed. There is no need to have a means of selection. Also, in terms of operability, the combined use is more efficient than the provision of speed selection means for presetting, and the complexity can be reduced.

  FIG. 4 shows a specific example of communication data, and the communication protocol is not particularly limited here.

  As transmission data from the camera, bit 0 means a tele-side drive command, and bit 1 means a wide-side drive command, which means “1” and drive “0” means stop. Bit 2 to bit 7 are speed information of 64 steps as speed.

  For example, when it is pushed by the T-side drive by the seesaw key 15 of the camera, 1 is set in bit 0, and the transmission speed is determined from the output of the volume to communicate. When the seesaw key 15 is not operated, both bits 0 and 1 are “0”, and in this state, speed information obtained from the output of the speed selection dial 16 is set and transmitted to the lens.

  The flow of the control unit 7 is shown in FIG.

  The control unit 7 determines whether or not the preset execution switch 19 is executed in 501, and returns if not executed, and if it is executed, the storage position preset by the preset storage switch 18 and the current position are determined in 502. Compare. If the current position and the storage position are the same, the flow is exited, and if it is different from the current position, the drive position is obtained by comparing with the storage position in 503. Next, the output of speed information from the camera is read at 504, the corresponding speed is obtained from the output, the preset zoom is driven at 505, the storage position is compared at 502, and the same processing is performed until they become the same. .

  In this example, the speed can be changed by operating the speed selection dial 16 even during preset execution.

  Therefore, an appropriate preset speed can be easily obtained by operating the speed selection dial 16 during execution of the preset, and the space on the exterior of the limited photographing apparatus can be used in combination with other functions so that the space can be effectively used. become.

  Further, when the zoom key operation of the camera is being performed, the preset function may not be validated, so that the preset and the zoom operation may be distinguished.

  Although not shown, the speed selection dial 16 may be used as a speed setting means for the focus preset when it has a focus preset function.

[Third embodiment]
The third embodiment will be described.

  FIG. 6 is a block diagram showing this embodiment, and the same parts as those in Embodiments 1 and 2 are omitted.

  The object of the present invention is to propose how to set the preset speed when the lens has a preset function and the camera does not have the speed selection dial 16 as shown in FIG.

  In this embodiment, the camera communicates the presence / absence of a speed selection dial to the lens, so that the lens determines whether the preset speed is output from the camera selection dial.

  When there is a selection dial, the contents are the same as those in the second embodiment. When there is no selection dial, it is proposed to determine a predetermined speed in advance and perform presetting at that speed.

  FIG. 7 shows a flow of the control means 7.

  The control unit 7 determines whether or not the preset execution switch 19 is executed in 701. If not, the control unit 7 returns; if it is executed, the storage position preset by the preset storage switch 18 and the current position are stored in 702. Compare. If the current position and the storage position are the same, the flow is exited. If the current position is different from the current position, a comparison is made with the storage position in 703 to determine the drive direction. Next, the presence / absence information of the speed selection dial is determined in 704. If not, the predetermined speed is read in 705 and the process proceeds to 707. If there is, the output of the speed information from the camera is read in 706 and the corresponding speed is obtained from the output. , 707, the preset zoom is driven, the storage position is compared with 702, and the same processing is performed until they become the same.

  When there is no speed selection dial presence / absence information, the speed is not limited to the above, and a predetermined speed may be set according to camera identification information.

Block diagram of the first embodiment Flowchart of the control unit 7 of the first embodiment Block diagram of the second embodiment The figure which shows the specific example of the communication data of 2nd Example. Flowchart of the control unit 7 of the second embodiment Block diagram of the third embodiment Flowchart of the control unit 7 of the third embodiment Block diagram of conventional example

Explanation of symbols

1 RFZ lens (optical system)
2 CCD
3 Diaphragm member 4 Diaphragm drive means 5 Diaphragm position detection means 7 Control means (control unit)
8, 9 Driving means 10, 11 Driver 12 Amplifier 13 Process circuit 14 AF means 15 Seesaw switch 16 Speed selection dial 17 Zoom mode selection switch 18 Preset storage switch 19 Preset execution switch 20 Camera control means 101 Front lens (first lens group) )
102 Variator (second lens group)
103 Afocal (third lens group)
104 RR (fourth lens group)

Claims (20)

  An imaging device comprising an imaging unit that performs imaging and a lens that forms an object image on a predetermined surface by an optical system including a moving lens group that moves on the optical axis. Lens driving means for forming an object image on a predetermined surface by an optical system including the moving lens group for magnification and driving the moving lens group, position detecting means for detecting the position of the moving lens group, moving lens group Preset function for storing the position of the lens and movement to a predetermined storage position, first and second speed setting means for setting the moving speed of the moving lens group, control means for controlling the moving lens, and movement of the moving lens Selection means for selecting whether the speed is the output of the first speed setting means or the second speed setting means. The first speed selection means serves as a driving direction command operation together with the speed setting in accordance with the operation. Of the second speed setting means Constant speed imaging apparatus, characterized in that the speed of the moving lens group at the time of the preset function execution.   The control means reads the setting speed of the second speed setting means when the first speed setting means is not operated, and sets the movement speed of the moving lens group when the preset function is executed. 1. The photographing apparatus according to 1.   An imaging apparatus comprising a camera having an imaging unit and an interchangeable lens that forms an object image on a predetermined surface by an optical system including a moving lens group that moves on an optical axis that is attachable to and detachable from the camera. Moving lens group for moving focus adjustment, lens driving means for forming an object image on a predetermined surface by an optical system including the moving lens group for zooming, and driving the moving lens group, the moving lens group Position detecting means for detecting the position of the camera, and control means for controlling the lens by communicating with the camera, the camera being a first speed setting means for setting the moving speed and direction of the moving lens, the movement of the lens A communication means for communicating the speed and direction to the lens and a control means for controlling the camera, wherein the camera communicates to the lens whether or not there is a second speed setting means for setting the moving speed of the moving lens; Interchangeable lens system according to claim.   4. The interchangeable lens system according to claim 3, wherein the interchangeable lens has a preset function, and the preset speed is determined from speed information from a camera.   4. The interchangeable lens system according to claim 3, wherein the interchangeable lens has a preset function, and the preset speed is speed information when there is no drive direction command from the camera.   4. The interchangeable lens system according to claim 3, further comprising a preset function, wherein selection of a preset speed is varied according to presence / absence information of the second speed setting means from the camera.   4. The interchangeable lens system according to claim 3, wherein the interchangeable lens has a preset function, and when there is no second speed setting means, the preset speed is set to a predetermined speed.   4. The interchangeable lens according to claim 3, wherein the interchangeable lens has a preset function, the camera communicates camera identification information to the lens, and the lens obtains a preset speed based on the identification information. system.   The interchangeable lens has a preset function, and the camera communicates camera identification information to the lens, and when there is no second speed setting means, the lens obtains a preset speed from the camera identification information. The interchangeable lens system according to claim 3.   10. The imaging apparatus according to claim 1, wherein the first and second speed setting means are for setting the moving speed of a moving lens group that performs zooming. Interchangeable lens system.   The second speed setting means can set a preset function moving speed of a moving lens group that performs focus adjustment when the lens has a preset function of a moving lens that performs focus adjustment. The imaging apparatus according to 1.   The second speed setting means can set a preset function moving speed of a moving lens group that performs focus adjustment when the lens has a preset function of a moving lens that performs focus adjustment. 3. The interchangeable lens system according to 3.   In an imaging apparatus comprising a camera apparatus including an imaging unit that performs imaging, and an interchangeable lens lens apparatus that forms an object image on a predetermined surface by an optical system including a moving lens group that moves on an optical axis that is detachable from the camera. The interchangeable lens is a lens driving unit that forms an object image on a predetermined surface by an optical system including a moving lens group for focus adjustment that moves on an optical axis and a moving lens group for zooming, and drives the moving lens group. Means for detecting the position of the moving lens group, and a preset function for storing the position of the moving lens group and moving it to a predetermined storage position by the operation member. Communication means for communicating with each other, first and second speed setting means for setting the moving speed of the moving lens, and selection means for selecting outputs of the first and second speed setting means by the selection means. The first speed selection means also serves as a driving direction command operation as well as a speed setting according to the operation, and is a command means that does not output a driving command when there is no operation, and when the first setting means is not operated. An imaging apparatus, wherein a setting speed of a second speed setting means is communicated to a lens.   14. The imaging apparatus according to claim 13, wherein the preset speed of the interchangeable lens is determined from speed information from a camera.   14. The image pickup apparatus according to claim 13, wherein the preset speed of the interchangeable lens is set to speed information when there is no drive direction command from the camera.   14. The imaging apparatus according to claim 13, wherein the camera communicates the presence / absence of the second speed setting means to the lens, and the lens changes the selection of the preset speed depending on the presence / absence of the second speed setting means.   14. The imaging apparatus according to claim 13, wherein the camera communicates the presence / absence of the second speed setting means to the lens, and sets the preset speed to a predetermined speed when there is no second speed setting means.   The imaging apparatus according to claim 13, wherein the camera communicates camera identification information to a lens, and the lens obtains a preset speed based on the identification information.   The camera communicates the presence / absence of the second speed setting means and the identification information of the camera to the lens, and when there is no second speed setting means, the lens obtains a preset speed from the camera identification information. Item 14. The imaging device according to Item 13.   In an imaging device comprising a camera having an imaging means and a lens that forms an object image on a predetermined plane by an optical system including a moving lens group that moves on an optical axis that is detachable from the camera, the interchangeable lens moves on the optical axis A lens driving means for forming an object image on a predetermined surface by an optical system including a moving lens group for focus adjustment, and the moving lens group for zooming, and driving the moving lens group; Position detecting means for detecting the position, control means for communicating with the camera and controlling the lens, and the camera having communication means for communicating with the lens and control means for controlling the camera, the camera Is an interchangeable lens system in which the presence or absence of speed setting means capable of changing the speed setting of the preset function is communicated to the lens.

Images