JP2007310005A - Camera system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera system in which a user can freely select and arrange functional units.
A plurality of functional units can be attached to a camera body. For example, a lens unit 12, a display unit 16, a battery unit 350, an operation unit 352, and a flash unit 354 are attached. The display unit 16 includes a monitor 36 and a display unit side contact 16c. The battery unit 350 includes the grip 18, the release button 22, the battery 236, and a battery unit side contact 350e. An operation unit 202 (mode dial 26, zoom button 28, cross button 30, MENU / OK button 32, cancel button 34, etc.) and an operation unit side contact 352f are provided. The flash unit 354 includes the flash 20 and a flash unit side contact 354g.
[Selection] Figure 10

Description

  The present invention relates to a camera system, and more particularly to a camera system including a camera body and a lens unit that is detachably attached to the camera body.

Conventionally, it consists of an interchangeable lens unit in which the photographic lens and the optical finder are integrated, and a camera body provided with a notch corresponding to the finder penetration part where the optical finder is placed when the interchangeable lens unit is mounted. An interchangeable lens camera has been proposed (Patent Document 1). Patent Document 2 discloses a camera with a monitor device to which a monitor device including a monitor main body that displays an image based on an image signal from the camera main body and a monitor mounting portion can be attached.
JP 2000-187268 A JP 11-338034 A

  In Patent Document 1, the photographic lens can be replaced, but the camera body is provided as a finished product in which each functional unit is assembled, and the user can design the layout of the functional unit according to his / her preference. Therefore, it has been impossible to select function units and change the arrangement according to the purpose and method of use of the user. Moreover, although the monitor apparatus can attach the monitor apparatus of patent document 2, the monitor apparatus was arrange | positioned along a back surface, and the user could not arrange | position freely.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a camera system in which a user can freely select and arrange functional units.

  In order to solve the above-described problem, a camera system according to a first aspect of the present invention includes a camera body, a lens unit that is detachably attached to the camera body, and at least one that is detachably attached to the camera body. A camera system comprising one functional unit, wherein the camera main body has a main body mount for mounting the lens unit, at least one functional unit mounting portion for mounting the functional unit, and the lens unit. Image receiving means for receiving an image from the lens unit, the lens unit, a lens mount connectable to the main body mount, a photographing lens, an image sensor on which a subject image is formed via the photographing lens, Image transmitting means for transmitting an image output from the image sensor to the camera body, and the functional unit includes a front Characterized in that it comprises a functional unit mount connected to the functional unit mounting portion.

  According to the first aspect of the present invention, the user can freely select the functional unit to be attached to the camera body. In addition, by providing a plurality of functional unit mounting portions in the camera body, for example, the arrangement of the functional units can be freely changed according to the posture at the time of shooting, the user's dominant arm, and the like.

  According to a second aspect of the present invention, in the camera system of the first aspect, the main body mount and the lens mount, and the functional unit mounting portion and the functional unit mount are configured to communicate with each other, And a mechanical coupling portion for fixing the position.

  According to the invention which concerns on Claim 2, a communication contact part can be reliably connected by fixing the position of a camera main body, a functional unit, etc. using a mechanical junction part.

  According to a third aspect of the present invention, in the camera system of the second aspect, the communication contact portions are provided on the main body mount and the lens mount, and the functional unit mounting portion and the functional unit mount, respectively, and abut against each other. It is an electrical contact portion that is electrically connected to each other.

  According to a fourth aspect of the present invention, in the camera system of the second aspect, the communication contact portion is provided on the main body mount and the lens mount, and the functional unit mounting portion and the functional unit mount, respectively. It is an optical contact part provided with the light emission part which light-emits light to a connection other party side according to the content, and the light-receiving part which light-receives the light from the light emission part of a connection other party side, It is characterized by the above-mentioned.

  According to the fourth aspect of the invention, by using the wireless communication means using light, the camera body and the functional unit can be communicably connected without using an electrical contact.

  According to a fifth aspect of the present invention, in the camera system of the second aspect, the communication contact portion is an antenna provided on the main body mount and the lens mount, and the functional unit mounting portion and the functional unit mount, respectively. It is characterized by that.

  According to the invention of claim 5, by using the wireless communication means, the camera body and the functional unit can be communicably connected without using an electrical contact.

  According to a sixth aspect of the present invention, in the camera system according to the second to fifth aspects of the present invention, the camera system further includes puncturing that protects the communication contact portion, and the camera body, the lens unit, and the functional unit are for waterproofing. And

  According to the invention which concerns on Claim 6, the camera system which has a waterproof effect is realizable. Further, by protecting the communication contact portion, it is possible to prevent a communication failure due to the water contact of the electrical contact portion or the antenna constituting the communication contact portion or the adhesion of dust to the optical contact portion.

  According to a seventh aspect of the present invention, in the camera system of the second to sixth aspects, the mechanical coupling portion is formed on the main body mount and the lens mount, and the functional unit mounting portion and the functional unit mount, respectively. It is a fitting part which can be mutually fitted, It is characterized by the above-mentioned. According to an eighth aspect of the present invention, in the camera system of the second to seventh aspects, the mechanical coupling portion is a fixing screw and a screw hole fixed by the fixing screw.

  According to the invention which concerns on Claim 8, the position of a camera main body, a functional unit, etc. can be reliably fixed using a mechanical junction part.

  According to a ninth aspect of the present invention, in the camera system according to the first to eighth aspects, the functional unit is a display unit including display means for displaying an image output from the imaging device.

  According to the invention which concerns on Claim 9, the user can select freely the kind of display means used for the display of an image. In addition, by providing a plurality of functional unit mounting portions in the camera body, the arrangement of the display means can be freely changed according to, for example, the posture at the time of shooting, the user's dominant arm, and the like.

  According to a tenth aspect of the present invention, in the camera system according to the first to ninth aspects, the display means includes a touch panel for a user to input an operation.

  According to the invention which concerns on Claim 10, a display means and an operation input means can be combined by providing a touch panel.

  According to an eleventh aspect of the present invention, in the camera system according to the first to tenth aspects, the functional unit is a grip portion for gripping the camera system. According to a twelfth aspect of the present invention, in the camera system of the eleventh aspect, the grip portion can be exchanged for still image shooting and for moving image shooting.

  According to the eleventh and twelfth aspects of the present invention, the user can freely select the type of grip portion (for still image shooting and for moving image shooting). In addition, by providing a plurality of functional unit mounting portions in the camera body, the arrangement of the grip portion can be freely changed according to, for example, the posture at the time of shooting or the user's dominant arm.

  According to a thirteenth aspect of the present invention, in the camera system of the eleventh or twelfth aspect, the grip portion further includes an operation input means for the user to perform an operation input. The invention according to claim 14 is the camera system according to claim 13, wherein the operation input means is a release button for inputting an imaging instruction.

  According to the inventions according to claims 13 and 14, since the operation input means such as the release button is disposed near the grip portion gripped by the user, the operation input is facilitated.

  According to a fifteenth aspect of the present invention, in the camera system according to the ninth to fourteenth aspects, the grip portion further includes a drive power source for the camera system.

  According to the invention which concerns on Claim 15, a drive power supply (battery) can be incorporated in a grip part.

  According to a sixteenth aspect of the present invention, in the camera system according to the ninth to fifteenth aspects, the grip portion further includes a tripod attachment member for attaching the camera system to a tripod. The invention according to claim 17 is the camera system according to any one of claims 1 to 15, wherein the functional unit is a tripod attachment member for attaching the camera system to a tripod. According to an eighteenth aspect of the present invention, in the camera system of the sixteenth or seventeenth aspect, the tripod mounting member is a tripod mounting screw hole formed at a center of gravity when the camera body and the lens unit are mounted. It is characterized by providing.

  According to the invention which concerns on Claims 16-18, a camera system can be stably attached to a tripod.

  According to a nineteenth aspect of the present invention, in the camera system according to the first to eighteenth aspects, the functional unit is a battery unit including a driving power source for the camera system.

  According to the nineteenth aspect of the invention, the type of drive power source (battery) used by the user can be selected by replacing the battery unit.

  According to a twentieth aspect of the present invention, in the camera system of the first to nineteenth aspects, the functional unit is a flash unit.

  According to the invention which concerns on Claim 20, the kind of flash used for imaging | photography can be changed.

  According to a twenty-first aspect of the present invention, in the camera system according to the first to twentieth aspects, the functional unit is a recording unit including a recording unit that records an image output from the imaging element. According to a twenty-second aspect of the present invention, in the camera system of the twenty-first aspect, the recording unit is a built-in memory built in the recording unit, and is replaceable according to a memory capacity.

  According to the twenty-second aspect of the present invention, for example, when the recording unit is full, the recording unit can be replaced.

  According to a twenty-third aspect of the present invention, in the camera system of the twenty-first aspect, the recording unit includes a media slot to which a recording medium for recording the image can be attached and detached. According to a twenty-fourth aspect of the present invention, in the camera system of the twenty-third aspect, the recording unit includes a media slot corresponding to a plurality of types of recording media.

  According to the invention of claim 24, it is possible to realize a camera system compatible with a plurality of types of recording media.

  The invention according to claim 25 is the camera system according to any one of claims 1 to 24, wherein the functional unit is an external connection unit for connecting to an external device. According to a twenty-sixth aspect of the present invention, in the camera system of the twenty-fifth aspect, the external connection unit includes a connection cord provided at a tip of a connection terminal connected to the external device, and the connection cord connected to the external connection unit. It is characterized by comprising cord winding means for winding inside.

  According to the twenty-sixth aspect of the invention, the user can freely select the connection terminal used for connection with the external device.

  According to a twenty-seventh aspect of the present invention, in the camera system according to the first to twenty-sixth aspects, the functional unit is an operation unit including an operation input unit for a user to input an operation.

  According to the invention of claim 27, the user can freely select the type of operation input means. In addition, by providing a plurality of functional unit mounting portions in the camera body, for example, the arrangement of the operation input means can be freely changed according to the posture at the time of shooting, the user's dominant arm, and the like.

  According to the present invention, the user can freely select a functional unit to be attached to the camera body. In addition, by providing a plurality of functional unit mounting portions in the camera body, for example, the arrangement of the functional units can be freely changed according to the posture at the time of shooting, the user's dominant arm, and the like.

  A preferred embodiment of a camera system according to the present invention will be described below with reference to the accompanying drawings.

[First Embodiment of Camera System]
FIG. 1 is a perspective view showing the front appearance of the camera system according to the first embodiment of the present invention, and FIG. 2 is a perspective view showing the rear appearance of the camera system. As shown in FIGS. 1 and 2, the camera system 10 of this embodiment includes a lens unit 12, a camera body 14, and a display unit 16.

  As shown in FIG. 1, the lens unit 12 is formed in a cylindrical shape, and includes a lens mount 12A at the base end. On the other hand, the camera main body 14 is formed in a box shape, and includes a main body mount 14 </ b> A substantially at the front center thereof. The lens unit 12 is detachably attached to the camera body 14 by attaching the lens mount 12A to the body mount 14A of the camera body 14.

  The lens mount 12A and the main body mount 14A are provided with a lens mount contact 12a and a main body mount contact 14a, respectively (only the main body mount contact 14a is shown). And conduct. A plurality of lens mount contacts 12a and main body mount contacts 14a are provided in the circumferential direction of the lens unit 12, and a conductive state can be maintained even when the lens unit 12 is rotated. The lens mount contact 12a and the main body mount contact 14a may have a circumferential shape. Further, the lens unit 12 and the camera body 14 may be connected by a flexible substrate or a wire harness. Further, as shown in FIG. 1, the lens unit 12 and the camera body 14 are provided with antennas 12b and 14b for wireless communication, respectively.

  As shown in FIG. 1, the display unit 16 is formed in a box shape and includes unit-side joint portions 16 d at four corners thereof. On the other hand, as shown in FIG. 2, a main body side joint 14 d is formed on the back surface of the camera main body 14. The display unit 16 is detachably attached to the camera body 14 by joining the unit side joint 16d to the body side joint 14d of the camera body 14. Furthermore, as shown in FIG. 2, the camera body 14 is provided with a unit connection contact 14c for connecting a functional unit such as the display unit 16 or the like. On the other hand, the display unit 16 is provided with a display unit side contact 16c. When the display unit 16 is attached to the camera body 14, the contacts are brought into contact with each other and become conductive. In addition, the structure of each joint part 16d, 14d and each contact 16c, 14c is mentioned later.

  The lens unit 12 includes a zoom lens having a camera shake correction function, and incorporates an image sensor as will be described later. As shown in FIG. 2, the display unit 16 includes a monitor (LCD monitor) 36.

  As shown in FIG. 1, a grip 18 and a flash 20 are provided on the front of the camera body 14, and a release button 22, a power switch 24, a mode dial 26, and the like are provided on the top. As shown in FIG. 2, a zoom button 28, a cross button 30, a MENU / OK button 32, a cancel button 34, and the like are provided on the back of the camera body 14. Further, a battery cover is provided on the bottom surface of the camera body 14 (not shown). When the battery cover is opened, a battery storage chamber for installing a battery and a memory card slot for installing a memory card are provided. It has been.

  The release button 22 functions as a button for inputting a shooting instruction, and is configured by a so-called “half press” and “full press” two-stage type. In the camera system 10, AE (Automatic Exposure) and AF (Auto Focus) function when the release button 22 is half-pressed, and shooting is executed when the release button 22 is fully pressed.

  The power switch 24 is composed of a slide-type switch, and the power of the camera system 10 is turned on / off by a slide operation of the power switch 24.

  The mode dial 26 is composed of a rotary dial and functions as a means for switching the mode of the camera system 10. The camera system 10 is switched between the “shooting mode” and the “reproduction mode” by rotating the mode dial 26.

  The monitor 36 is composed of a color LCD. The monitor 36 is used for reproduction of a photographed image in the reproduction mode, and a through image is displayed in the photographing mode and used as an electronic viewfinder. In addition, a menu screen is displayed during various setting operations, and is also used as a user interface for the user to perform various setting operations.

  The zoom button 28 functions as a button for instructing zooming at the time of shooting, and includes a zoom telebutton 28T for instructing zooming in the tele direction and a zoom wide button 28W for instructing zooming in the wide direction. During playback, it functions as a button for instructing enlargement / reduction of the image, the image is enlarged by the zoom tele button 28T, and the image is reduced by the zoom wide button 28W.

  The cross button 30 is configured to be pressed in four directions, up, down, left, and right, and is assigned a function corresponding to the situation of the camera system 10. For example, in the shooting mode, the right button functions as a macro button that instructs switching of the macro mode, and the left button functions as a flash button that instructs switching of the flash mode. In the playback mode, the right button functions as a button for instructing frame advance of an image, and the left button functions as a frame return button for instructing frame advance of an image. Further, when performing various settings using the monitor 36, it functions as a button for instructing movement of the cursor displayed on the monitor 36.

  The MENU / OK button 32 functions as a button for instructing display of the menu screen on the monitor 36, functions as a button for instructing execution of various operations, and the cancel button 34 is a button for instructing cancellation of various operations. Function.

  FIG. 3 is a block diagram showing an electrical configuration of the camera system 10. As shown in FIG. 3, the lens unit 12 includes a photographing optical system 100, a photographing optical system drive unit 102, a photographing optical system control unit 104, a camera shake detection angular acceleration sensor 106, an image pickup device (CCD) 108, and analog signal processing. Unit 110, A / D converter 112, digital signal processing unit 114, integration circuit 116, timing generator (TG) 118, compression / decompression processing unit 120, card interface (card I / F) 122, memory card slot 124, lens CPU 126, lens system memory 128 including ROM, RAM, lens nonvolatile memory 130, wireless communication interface unit (wireless I / F) 132, main body antenna 12b, UART (low speed serial driver) 134, high speed serial driver 136, battery 138 , Power control unit 140, DC / Comprising a C converter 142 and the lens mount contacts 12a.

  On the other hand, the camera body 14 includes a main body CPU 200, an operation unit 202 (mode dial 26, zoom button 28, cross button 30, MENU / OK button 32, cancel button 34, etc.), operation I / O 204, release button 22, RAM (workpiece). Memory) 206, main body flash ROM 208, ROM (main system memory) 210, timer 212, calendar clock 214, compression / decompression processing unit 216, card interface (card I / F) 218, memory card slot 220, wireless communication interface unit ( Wireless I / F) 222, main body antenna (ANT) 14b, UART (low-speed serial driver) 224, high-speed serial driver 226, RAM (data memory) 228, on-screen function unit (OSD unit) 230, LCD control unit 232, F Cache controller 234, flash 20, battery 236, power controller 238, DC / DC converter 240, power switch (power SW) 24, microphone 242, sampling unit 244, USB connector 246, USB driver 248, lens detection I / O250, a main body mount contact 14a, and a unit connection contact 14c.

  The overall operation of the camera system 10 is centrally controlled by the main body CPU 200. The main body CPU 200 controls each unit of the camera system 10 according to a predetermined control program based on an input from the operation unit 202 or the like. The operation I / O 204 transmits the input from the operation unit 202 to the main body CPU 200. A ROM (main body system memory) 210 stores a control program executed by the main body CPU 200 and various data necessary for control. The main body CPU 200 controls each part of the camera system 10 according to the control program stored in the ROM 208 while using the work memory 206 as a work area.

  In addition, the main body CPU 200 can detect that the lens unit 12 is mounted via the lens detection I / O 250. When the lens unit 12 is not attached, a high-level signal is input to the lens detection I / O 250 via a pull-up resistor. When the lens unit 12 is attached to the camera body 14, a pull-up resistor is connected to the ground terminal provided on the lens mount contact 12a, and a signal input to the body CPU 200 via the lens detection I / O 250 is Low. Become. The main body CPU 200 detects the change of the input signal from High to Low, and detects that the lens unit 12 is attached.

  The lens CPU 126 performs overall control of the operation of the lens unit 12 in accordance with a command from the main body CPU 200. The ROM of the lens system memory 128 stores a control program executed by the lens CPU 126 and various data necessary for control. The lens CPU 126 controls each part of the lens unit 12 using the RAM of the lens system memory 128 as a work area in accordance with a control program stored in the ROM of the lens system memory 128.

  The photographing optical system 100 includes a zoom lens having a camera shake correction function, and includes a focus lens, a zoom lens, a camera shake correction lens, a mechanical shutter, a diaphragm, and the like. The photographing optical system driving unit 102 constitutes driving units such as a focus lens, a zoom lens, a camera shake correction lens, a mechanical shutter, and a diaphragm of the photographing optical system 100, and the photographing optical system control unit 104 is input via a lens CPU 126. The driving of the photographing optical system driving unit 102 is controlled in accordance with the command to be performed.

  The camera shake detection angular acceleration sensor 106 detects a motion occurring in the camera system 10 and outputs it to the lens CPU 126 in order to perform camera shake correction. The lens CPU 126 calculates the operation amount of the camera shake correction lens based on the output of the camera shake detection angular acceleration sensor 106 and operates the camera shake correction lens so as to cancel the camera shake.

  The image sensor 108 is composed of, for example, a primary color CCD, and the photographing optical system 100 converts an optical image of a subject formed on the light receiving surface into an electric signal. Note that the image sensor 108 may be composed of another photosensor such as a CMOS.

  The analog signal processing unit 110 includes a sampling hold circuit, a color separation circuit, a gain adjustment circuit, and the like, and performs correlated double sampling (CDS) processing, color separation processing, pre-white balance on the image signal output from the image sensor 108. Necessary analog signal processing such as processing is performed.

  The A / D converter 112 converts the analog image signal output from the analog signal processing unit 110 into a digital image signal and outputs the digital image signal. The digital image signal is temporarily stored in the RAM of the lens system memory 128 and added to the digital signal processing unit 114.

  The digital signal processing unit 114 is composed of a digital signal processor (DSP) including a luminance / color difference signal generation circuit, a gamma correction circuit, a sharpness correction circuit, a contrast correction circuit, a white balance correction circuit, and the like. Thus, a YUV signal composed of a luminance signal (Y signal) and a color difference signal (Cr, Cb signal) is generated. The compression / decompression processing unit 120 performs compression processing on the YUV signal to generate compressed image data, and also performs decompression processing on the compressed image data to generate a YUV signal.

  The integrating circuit 116 obtains an image signal after A / D conversion, and calculates a physical quantity necessary for AE / AF control. That is, an integrated value of R, G, and B image signals in one frame is calculated as a physical quantity necessary for AE control. The lens CPU 126 calculates the brightness of the subject (subject luminance) based on the integrated value obtained from the integrating circuit 116, and determines the aperture value and shutter speed from a predetermined program diagram. Further, as a physical quantity necessary for AF control, an integrated value (focus evaluation value) of high frequency components of the G signal in a predetermined AF area is calculated. The lens CPU 126 moves the focus lens to a position where the focus evaluation value is maximized (so-called contrast AF).

  A timing generator (TG) 118 provides timing signals to the image sensor 108, analog signal processing unit 110, A / D converter 112, digital signal processing unit 114, and integration circuit 116. The above units are synchronized by a timing signal provided from the TG 118.

  Under the control of the lens CPU 126, the UART 134 transmits and receives control signals (command signals) to and from the camera body side UART 224 connected via the lens mount contact 12a and the body mount contact 14a. On the other hand, under the control of the main body CPU 200, the main body side UART 224 transmits and receives control signals (command signals) to and from the lens unit side UART 134 connected via the lens mount contact 12a and the main body mount contact 14a.

  The high-speed serial driver 136 transmits an image file with the high-speed serial driver 226 on the camera body side connected via the lens mount contact 12a and the body mount contact 14a under the control of the lens CPU 126. On the other hand, the high-speed serial driver 226 on the main body side receives an image file with the high-speed serial driver 136 on the lens unit side connected via the lens mount contact 12a and the main body mount contact 14a under the control of the main body CPU 200. Do.

  The power control unit 140 controls the DC / DC converter 142 under the control of the lens CPU 126 and supplies the power supplied from the battery 138 to each unit of the lens unit 12. When the remaining amount of the battery 138 is insufficient, the power supply control unit 140 controls the DC / DC converter 142 under the control of the lens CPU 126, via the lens mount contact 12a and the main body mount contact 14a. The power supplied from the DC / DC converter 240 of the camera body 14 is supplied to each part of the lens unit 12. When the remaining amount of the battery 138 is insufficient, the battery 138 may be charged with power supplied from the camera body 14.

  When displaying a through image on the monitor 36, YUV signals continuously generated by the digital signal processing unit 114 are sequentially added to a RAM (data memory) 228 via a high-speed serial driver 136 and 226 (DMA: Direct memory access). The LCD control unit 232 converts the YUV signal applied to the RAM (data memory) 228 into a display signal format, and the monitor 36 of the display unit 16 via the unit connection contact 14c and the display unit side contact 16c. Are output sequentially. The main body CPU 200 determines the type of the connected display unit 16 and adjusts the image signal for display by controlling the LCD controller 232 based on information such as the size and resolution of the monitor 36. As a result, a through image is displayed on the monitor 36, and photographing can be performed while using the monitor 36 as a viewfinder. The LCD control unit 232 may be provided on the display unit 16 side.

  The on-screen function unit (OSD unit) 230 includes a character generator, and outputs characters, symbols, and the like to be displayed on the monitor 36 to the LCD control unit 232 under the control of the main body CPU 200. The LCD control unit 232 superimposes characters and the like output from the OSD unit 230 on the image and outputs them to the monitor 36.

  When shooting and recording an image, the lens CPU 126 performs AE / AF control by half-pressing the release button 22 of the camera body 14, and shooting is performed by full-pressing. The YUV signal captured by photographing is compressed in a predetermined compression format (for example, JPEG format) in the digital signal processing unit 114. The compressed image data is converted into an image file to which necessary attached information such as shooting date and time and shooting conditions (aperture value, shutter speed, sensitivity, etc.) is added, and then the memory card slot 124 via the card I / F 122. Stored in the memory card 124A. At this time, the image file is stored in the storage area of the memory card 124A according to a predetermined rule. The image file can also be stored in a memory card 220A attached to the memory card slot 220 via the card I / F 218 on the camera body 14 side.

  The timer 212 measures time based on a command from the main body CPU 200, and the calendar clock 214 measures the current date and time based on the command from the main body CPU 200.

  The flash control unit 234 controls light emission of the flash 20 under the control of the main body CPU 200.

  The microphone 242 is a device for inputting sound. The sound input from the microphone 242 is sampled at a predetermined sampling rate in the sampling unit 244, converted into a predetermined file format (for example, WAV format), and stored in the memory card 220A.

  The USB connector 246 is a terminal for connecting to an external device (for example, a personal computer (PC) or a storage device). The USB driver 248 is software for operating an external device connected via the USB connector 246.

  The power supply control unit 238 controls the DC / DC converter 240 under the control of the main body CPU 200, and supplies the power supplied from the battery 236 to each unit of the camera main body 14 and the lens unit 12. When the remaining amount of the battery 236 is insufficient, the power supply control unit 238 controls the DC / DC converter 240 under the control of the main body CPU 200, via the main body mount contact 14a and the lens mount contact 12a. The power supplied from the DC / DC converter 142 of the lens unit 12 is supplied to each part of the camera body 14. Note that when the remaining amount of the battery 236 is insufficient, the battery 236 may be charged with the power supplied from the lens unit 12.

[Composition of joint and contact]
Next, the structure of a junction part (14d, 16d) and a contact (14c, 16c) is demonstrated. FIG. 4 is a perspective view showing the configuration of the joints (14d, 16d) and the contacts (14c, 16c), and FIG. 5 is a sectional view taken along line 5-5. In FIG. 4, portions other than the display unit side contact 16c of the display unit 16 are omitted.

  As shown in FIG. 4, the display unit side contact 16c of the display unit 16 is formed in a convex shape. As shown in FIG. 5, the electrode 300 is attached to the surface of the convex part of the display unit side contact 16c. As shown in FIG. 4, the electrode 300 is exposed behind the convex portion and is connected to the display unit side substrate 16P on which the control circuit of the monitor 36 of the display unit 16 is arranged. On the other hand, the unit connection contact 14c of the camera body 14 is formed in a concave shape, and an electrode 302 is attached to the inner surface thereof. The electrode 302 is connected to the main body side substrate 14P on which various circuits of the camera main body 14 are arranged. When the display unit side contact 16c is fitted into the unit connection contact 14c, the electrode 300 and the electrode 302 are conducted, and the display unit side substrate 16P and the main body side substrate 14P are electrically connected.

  As shown in FIG. 5, a screw hole 304 is formed in the unit side joint 16 d of the display unit 16, and a fixing screw 306 is attached to the screw hole 304. On the other hand, a screw hole 308 is formed at a position corresponding to the screw hole 304 on the display unit 16 side in the main body side joint portion 14 d of the camera main body 14. The display unit 16 is fixed to the camera body 14 with fixing screws 306.

  According to this embodiment, the user can freely select the type of monitor used for displaying an image. Also, by providing a plurality of unit connection contacts 14c on the camera body 14, the arrangement of the monitor can be freely changed according to, for example, the posture at the time of shooting, the user's dominant arm, and the like. Furthermore, according to the present embodiment, the display unit can be easily attached and detached simply by fitting the unit connection contact 14c and the display unit side contact 16c.

[Second Embodiment of Joint and Contact]
Next, a second embodiment of the joints (14d, 16d) and the contacts (14c, 16c) will be described. FIG. 6 is a perspective view showing a second embodiment of the joints (14d, 16d) and the contacts (14c, 16c), and FIG. 7 is a 7-7 sectional view thereof. In FIG. 6, parts other than the display unit side contact 16c of the display unit 16 are omitted.

  As shown in FIG. 6, the display unit side contact 16 c of the display unit 16 includes a light receiving unit 16 c-1 and a light emitting unit 16 c-2, and the unit connection contact 14 c of the camera body 14 is the light emitting unit 14 c-1. And a light receiving portion 14c-2. As shown in FIG. 7, the light receiving unit 16 c-1 and the light emitting unit 14 c-1, and the light emitting unit 16 c-2 and the light receiving unit 14 c-2 are opposed to each other when the display unit 16 is attached to the camera body 14. Arranged.

  A plurality of light receiving elements (for example, photodiodes: PD) are arranged in the light receiving parts 16c-1 and 14c-2, and light emitting elements (in the light emitting parts 16c-2 and 14c-1 in positions corresponding to the light receiving elements). For example, a plurality of light emitting diodes (LEDs) are arranged. When transmitting a signal from the camera body 14 to the display unit 16, first, an image signal (YUV signal) converted into a display signal format by the LCD control unit 232 is input to the light emitting unit 14c-1. The light emitting unit 14c-1 causes the light emitting element to emit light in accordance with the image signal input from the main body CPU 200. The light receiving unit 16c-1 receives the light from the light emitting unit 14c-1, converts it into an electrical signal, and transmits it to the display unit side substrate 16P for controlling the monitor 36. Thereby, the image output from the camera body 14 side is displayed on the monitor 36.

  Conversely, when a signal is transmitted from the display unit 16 to the camera body 14, first, a signal is input from the display unit side substrate 16P to the light emitting unit 16c-2. The light emitting unit 16c-2 causes the light emitting element to emit light according to the input signal. The light receiving unit 14c-2 receives the light from the light emitting unit 16c-2, converts it into an electrical signal, and transmits it to the main body CPU 200 on the main body side substrate 14P. Thereby, the display unit side board | substrate 16P and the main body side board | substrate 14P are connected so that communication is possible.

  Further, as shown in FIG. 7, the display unit 16 is formed with a nail stopper member as the unit side joint portion 16 d. On the other hand, a nail hole is formed as a main body side joint 14d at a position corresponding to the nail member 16d of the camera body 14. The claw retaining member 16 d is composed of two key-shaped members 310, and a gap is provided between the key-shaped members 310. On the other hand, the claw retaining hole 14d has a smaller diameter on the entrance side than on the back side. As shown in FIG. 7, when the pawl member 16d is fitted into the pawl hole 14d, the pawl member 16d is caught by the entrance of the pawl hole 14d. Thereby, the camera body 14 and the display unit 16 are fixed to the camera body 14 so that the unit connection contact 14c and the display unit side contact 16c face each other.

  According to the present embodiment, by using a wireless communication means (optical contact portion) using light, the camera body 14 and the display unit 16 can be communicably connected without using an electrical contact. .

[Third Example of Joint and Contact]
Next, a third embodiment of the joints (14d, 16d) and the contacts (14c, 16c) will be described. FIG. 8 is a perspective view showing a third embodiment of the joints (14d, 16d) and the contacts (14c, 16c), and FIG. 9 is a 9-9 cross-sectional view thereof. In FIG. 8, the display unit 16 is omitted.

  As shown in FIG. 8, a circumferential recess 320 is formed around the unit connection contact 14c on the camera body 14 side. On the wall surface of the circumferential recess 320, a punking 322 is attached circumferentially without a gap. As shown in FIG. 9, a circumferential projection 324 is formed around the display unit side contact 16c. The width of the circumferential convex portion 324 is narrower than the width of the circumferential concave portion 320. When the circumferential convex portion 324 is fitted into the circumferential concave portion 320, the punking 322 is in close contact with the circumferential convex portion 324, and the unit connection contact 14c and the display unit side contact 16c are sealed.

  8 and 9, electrical contacts (see FIGS. 4 and 5) are used, but optical communication contacts (FIGS. 6 and 7) may be used.

  Further, as shown in FIG. 9, a circumferential recess 326 is also formed around the body mount 14A of the camera body 14, and a punking 328 is circumferentially attached to the wall surface without a gap. On the other hand, a circumferential convex portion 330 is formed at the base end portion of the lens mount 12 </ b> A. When the circumferential convex portion 330 is fitted into the circumferential concave portion 326, the puncturing 328 is brought into close contact with the circumferential convex portion 330. The lens mount contact 12a and the body mount contact 14a are sealed.

  According to the present embodiment, each contact (12a, 14a, 14c, and 16c) is sealed, so that the contact can be prevented from getting wet and dust from being attached. Further, by using the waterproof lens unit 12, the camera body 14, and the display unit 16, the camera system of the present invention can be realized even in a waterproof camera system.

[Second Embodiment of Camera System]
Next, a camera system according to the second embodiment of the present invention will be described. FIG. 10 is a perspective view showing the front appearance of the camera system according to the second embodiment of the present invention, FIG. 11 is a perspective view showing the appearance of the back surface, and FIG. 12 is a block diagram showing the electrical configuration thereof. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIGS. 10 and 11, the camera system 10 of this embodiment includes a lens unit 12, a camera body 14, a display unit 16, a battery unit 350, an operation unit 352, and a flash unit 354.

  As shown in FIG. 11, the camera body 14 includes four unit connection contacts 14c, 14e, 14f, and 14g for connecting to a functional unit such as the display unit 16 in a communicable manner. The unit connection contacts 14c, 14e, 14f and 14g are formed in a concave shape, and electrodes are attached to the inner surfaces thereof. As shown in FIG. 11, this electrode is connected to a main body side substrate 14P on which various circuits of the camera main body 14 are arranged.

  The battery unit 350 includes a grip portion 18, a release button 22, a battery 236, and a battery unit side contact 350e. The battery unit 350 may not be integrated with the grip portion 18. As shown in FIG. 11, the battery unit side contact 350e is formed in a convex shape, and an electrode is attached to the surface of the convex portion. When the battery unit side contact 350e is fitted to the unit connection contact 14e, the release button 22 and the battery 236 of the battery unit 350 are electrically connected to the main body side substrate 14P. The battery unit 350 and the camera body 14 are in contact with each other with a mechanical joint (not shown) (see FIGS. 5 and 7). The mechanical joint is used to connect the battery unit 350 and the camera body. 14 is fixed.

  The operation unit 352 includes an operation unit 202 (mode dial 26, zoom button 28, cross button 30, MENU / OK button 32, cancel button 34, etc.) and an operation unit side contact 352f. As shown in FIG. 11, the operation unit side contact 352f is formed in a convex shape, and an electrode is attached to the surface of the convex portion. When the operation unit side contact 352f is engaged with the unit connection contact 14f, the operation unit 202 is electrically connected to the main body side substrate 14P, and an input from the operation unit 202 can be transmitted to the main body CPU 200 of the main body side substrate 14P. become. The operation unit 352 and the camera body 14 are in contact with each other with a mechanical joint (not shown) (see FIGS. 5 and 7). The mechanical joint is used to connect the operation unit 352 and the camera body. 14 is fixed.

  The flash unit 354 includes the flash 20 and a flash unit side contact 354g. As shown in FIG. 11, the flash unit side contact 354g is formed in a convex shape, and an electrode is attached to the surface of the convex portion. When the flash unit side contact 354g is fitted to the unit connection contact 14g, the flash 20 is electrically connected to the flash control unit 234 of the main body side substrate 14P, and the flash control unit 234 can control the flash 20. The flash unit 354 and the camera body 14 come into contact with each other with a mechanical joint (not shown) (see FIGS. 5 and 7), and the flash unit 354 and the camera body are formed by the mechanical joint. 14 is fixed.

  In the present embodiment, the camera body 14 is provided with contacts and joints for mounting each unit, and each unit is directly mounted on the camera body 14. However, some units are attached to other units. It may be attached so that it can communicate with the camera body 14. For example, the battery unit 350 may be provided with a contact or a joint for mounting the operation unit 352 so that the operation unit 352 is communicably connected to the camera body 14 via the battery unit 350.

  In the present embodiment, the camera body 14 and the units 16, 350, 352, and 354 are connected by electrical contacts. Good. Each contact portion may be configured to be waterproof and dustproof.

[Configuration of Battery Unit 350]
Hereinafter, the configuration of each unit will be described in detail. 13 to 15 are perspective views showing examples of the battery unit 350. FIG. A battery unit 350-1 shown in FIG. 13 has a grip portion 18-1 provided on the side surface and a release button 22 provided on the upper surface, and has a configuration suitable for still image shooting.

  Moreover, the battery unit 350-2 shown in FIG. 14 is formed in an L shape. On the bottom side of the camera body 14 of the battery unit 350-2, a rod-shaped grip portion 18-2 is provided, which is suitable for stably holding the camera system 10 for a long time during moving image shooting. Yes.

  Further, the battery unit 350-3 shown in FIG. 15 is formed in an L shape, and a grip portion 18-1 for taking a still image is provided on the side surface, and a release button 22-1 is provided on the upper surface. It has been. Further, on the bottom side of the camera body 14 of the battery unit 350-3, a rod-like grip portion 18-2 for moving image shooting is provided, and a release button 22-2 is provided on the grip portion 18-2. Yes.

  According to the camera system 10 of the present embodiment, it can be easily replaced with a battery unit having a grip button and a release button for still image shooting, moving image shooting or still image / moving image shooting, according to the scene used by the user. become.

  In addition, the battery unit 350-4 illustrated in FIG. 16A includes a secondary battery 236-4 as the battery 236. The secondary battery 236-4 can be charged by being connected to a commercial power source, an external device (for example, a cradle, a personal computer (PC)), or the like via the USB connector 246. On the other hand, the battery unit 350-5 shown in FIG. 16B includes a dry battery 236-5 as the battery 236. A battery cover (not shown) is provided on the lower surface of the battery unit 350-5 in the drawing so that the dry battery 236-5 can be replaced. As shown in FIG. 16, by replacing the battery unit 350, the type of the battery 236 to be used can be changed.

  FIG. 17 is a view showing another embodiment of the battery unit, and FIG. 18 is a perspective view showing a state in which the lens unit 12 and the camera body 14 are attached to the battery unit of FIG. As shown to Fig.17 (a), the battery unit 350-6 is formed in the substantially L shape. A battery unit side contact 350e is formed on the surface of the battery unit 350-6 that contacts the side surface of the camera body 14. Further, a joint portion (screw fastening portion) 356 for fixing the camera body 14 is formed on the surface of the battery unit 350-6 that contacts the bottom surface of the camera body 14.

  The battery unit 350-6 is formed with a lens support member 358 extending in front of the camera body 14. As shown in FIG. 17A, a concave lens placement portion 358 </ b> A that follows the shape of the lens unit 12 is formed on the upper surface of the lens support member 358. Further, as shown in FIG. 17B, a tripod hole 350B for attaching a tripod is formed on the back surface of the battery unit 350-6. The tripod hole 350B is formed at the position of the center of gravity when the lens unit 12 and the camera body 14 are attached. A plurality of tripod holes 350B may be formed in the vertical direction (the direction of the lens unit 12) in FIG. Thereby, the camera system 10 can be stably attached to the tripod by changing the tripod hole 350B to be used in accordance with the weight of the lens unit 12 and the camera body 14 attached to the battery unit 350-6. .

  In the present embodiment, the battery unit 350 is provided with the grip portion (18, etc.), but a release button (22) and a unit provided with the grip portion may be provided separately from the battery unit 350.

[Configuration of Display Unit 16 and Operation Unit 352]
Next, the configuration of the display unit 16 and the operation unit 352 will be described. FIG. 19 is a perspective view showing a state in which the display unit and the operation unit are attached to the camera body 14. As shown in FIG. 19A, the display unit 16 and the operation unit 352 are detachably attached to the back surface of the camera system 10. On the other hand, instead of the display unit 16 and the operation unit 352, a display / operation unit 352-1 is mounted on the back surface of the camera system 10 shown in FIG. A display / operation unit 352-1 and a touch monitor 360 are provided. The touch monitor 360 is configured by arranging a touch panel on the surface of a monitor (LCD monitor). The touch monitor 360 displays an image, displays an operation member for performing various setting operations, and accepts an operation input from the touch panel.

  In addition, as shown in FIG. 20, the operation unit 352-2 including the numeric keypad 362 can be changed instead of the zoom button 28, the cross button 30, the MENU / OK button 32, the cancel button 34, and the like.

  As described above, according to the present embodiment, the type, size, and user interface for performing various setting operations of the monitor 36 can be changed according to the user's preference.

[Configuration of flash unit 354]
Next, the configuration of the flash unit 354 will be described. FIG. 21 is a perspective view showing the flash unit 354. As shown in FIG. 21, in the camera system 10 of this embodiment, a flash unit 354 having a small flash 20 can be replaced with a flash unit 354 ′ having a grip-on-flash 20 ′.

  In this embodiment, for example, the flash unit 354 having the grip portion 18 is attached to the left hand side of the camera system 10 and the operation unit 352 shown in FIG. 17A is attached to the left side of the display unit 16. An arrangement of units for left-handed users can be realized.

[Another embodiment of functional unit]
Next, another embodiment of the functional unit will be described. FIG. 22 is a perspective view showing a slot portion for mounting the memory card 220A, and FIG. 23 is a block diagram showing its electrical configuration. As shown in FIG. 22, the slot portion 370 includes an openable / closable slot cover 372. Inside the slot cover 372 is an xD card slot 374 for an xD picture card 374A, and a compact flash (CF) 376A. CF slot 376, SD card slot 378 for SD card 378A (both are registered trademarks), and slot side contact 370a. In addition, it is also possible to have a configuration including a slot corresponding to a removable medium such as a memory card, an optical disk, or a magnetic disk other than the above. The configuration of the slot side contact 370a is the same as that of the display unit side contact 16c and the like, and the slot 370 can communicate with the camera body 14 by connecting the slot side contact 370a to the unit connection contact 16c. Connected to.

  According to the present embodiment, the camera system 10 can read and write data with a plurality of removable recording media.

  FIG. 24 is a perspective view showing an external appearance of a connector unit including a USB connector, FIG. 25 is a sectional view thereof, and FIG. 26 is a block diagram showing an electrical configuration thereof. As shown in FIG. 24, the connector unit 380 includes a USB connector 382 and a cord 384 for connecting to an external device such as a personal computer (PC). As shown in FIG. 25, the cord 384 is wound into the connector unit 380 by a winding mechanism (not shown). The connector unit 380 includes a unit side contact 380a, and is connected to the camera body 14 so as to be communicable by connecting the unit side contact 380a to the unit connection contact 16c and the like.

  In addition to the USB, the connector unit 380 may include other connectors such as IEEE 1394, an Ethernet terminal, and an AV terminal.

  As another example of the functional unit, for example, the microphone 242 of the camera body 14, the memory card slot 124 of the lens unit 12, and the battery 138 may be separated as functional units.

The perspective view which shows the external appearance of the front of the camera system which concerns on the 1st Embodiment of this invention The perspective view which shows the external appearance of the back surface of the camera system which concerns on the 1st Embodiment of this invention. Block diagram showing the electrical configuration of the camera system 10 The perspective view which shows the structure of a junction part (14d, 16d) and a contact (14c, 16c). 5-5 sectional view of FIG. The perspective view which shows 2nd Example of a junction part (14d, 16d) and a contact (14c, 16c). 7-7 sectional view of FIG. The perspective view which shows 3rd Example of a junction part (14d, 16d) and a contact (14c, 16c). 9-9 sectional view of FIG. The perspective view which shows the external appearance of the front of the camera system which concerns on the 2nd Embodiment of this invention. The perspective view which shows the external appearance of the back surface of the camera system which concerns on the 2nd Embodiment of this invention. The block diagram which shows the electrical constitution of the camera system which concerns on the 2nd Embodiment of this invention. The perspective view which shows the Example of the battery unit 350 The perspective view which shows the Example of the battery unit 350 The perspective view which shows the Example of the battery unit 350 The perspective view which shows the Example of the battery unit 350 The figure which shows another Example of a battery unit The perspective view which shows the state which attached the lens unit 12 and the camera main body 14 to the battery unit of FIG. The perspective view which shows the state in which the display unit and the operation unit were attached to the camera main body 14. The perspective view which shows another Example of an operation unit A perspective view showing the flash unit 354 The perspective view which shows the slot part for mounting | wearing with the memory card 220A Block diagram showing electrical configuration of slot The perspective view which shows the connector unit containing a USB connector Sectional view showing a connector unit including a USB connector Block diagram showing the electrical configuration of a connector unit including a USB connector

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Camera system, 12 ... Lens unit, 14 ... Camera body, 16 ... Display unit, 350 ... Battery unit, 352 ... Operation unit, 354 ... Flash unit, 370 ... Slot part, 380 ... Connector unit

Claims (27)

A camera system comprising a camera body, a lens unit that is detachably attached to the camera body, and at least one functional unit that is detachably attached to the camera body,
The camera body is
A body mount for mounting the lens unit;
At least one functional unit mounting portion for mounting the functional unit;
Image receiving means for receiving an image from the lens unit;
The lens unit is
A lens mount connectable to the body mount;
A taking lens,
An image sensor on which a subject image is formed via the photographing lens;
Image transmission means for transmitting an image output from the image sensor to the camera body;
The functional unit is
A camera system comprising a functional unit mount connectable to the functional unit mounting portion. The main body mount and the lens mount, and the functional unit mounting portion and the functional unit mount are:
A communication contact for communicating with each other;
Mechanical couplings to fix each other's position;
The camera system according to claim 1, further comprising:   The communication contact portion is an electrical contact portion that is provided on each of the main body mount and the lens mount, and the functional unit mounting portion and the functional unit mount, and is in contact with and electrically connected to each other. The camera system according to claim 2.   The communication contact portion is provided in the main body mount and the lens mount, and the functional unit mounting portion and the functional unit mount, respectively, and a light emitting portion that emits light to a connection counterpart side according to communication contents, and a connection counterpart The camera system according to claim 2, wherein the camera system is an optical contact portion including a light receiving portion that receives light from the light emitting portion on the side.   The camera system according to claim 2, wherein the communication contact portion is an antenna provided on the main body mount and the lens mount, and on the functional unit mounting portion and the functional unit mount. Further comprising puncturing for protecting the communication contact part,
The camera system according to any one of claims 2 to 5, wherein the camera body, the lens unit, and the functional unit are for waterproofing.   3. The mechanical coupling portion is a fitting portion that is formed in each of the main body mount and the lens mount, and the functional unit mounting portion and the functional unit mount, and can be fitted to each other. 7. The camera system according to any one of 6.   The camera system according to claim 2, wherein the mechanical coupling portion is a fixing screw and a screw hole fixed by the fixing screw.   The camera system according to any one of claims 1 to 8, wherein the functional unit is a display unit including display means for displaying an image output from the imaging device.   The camera system according to claim 9, wherein the display unit includes a touch panel for a user to input an operation.   The camera system according to any one of claims 1 to 10, wherein the functional unit is a grip portion for gripping the camera system.   The camera system according to claim 11, wherein the grip unit is replaceable for still image shooting and for moving image shooting.   The camera system according to claim 11, wherein the grip unit further includes operation input means for a user to input an operation.   The camera system according to claim 13, wherein the operation input means is a release button for inputting an imaging instruction.   The camera system according to claim 9, wherein the grip unit further includes a drive power source for the camera system.   The camera system according to claim 9, wherein the grip portion further includes a tripod attachment member for attaching the camera system to a tripod.   The camera system according to claim 1, wherein the functional unit is a tripod attachment member for attaching the camera system to a tripod.   18. The camera system according to claim 16, wherein the tripod mounting member includes a tripod mounting screw hole formed at a center of gravity when the camera body and the lens unit are mounted.   The camera system according to claim 1, wherein the functional unit is a battery unit including a driving power source for the camera system.   The camera system according to claim 1, wherein the functional unit is a flash unit.   21. The camera system according to claim 1, wherein the functional unit is a recording unit including a recording unit that records an image output from the image sensor.   The camera system according to claim 21, wherein the recording means is a built-in memory built in the recording unit, and is replaceable according to a memory capacity.   The camera system according to claim 21, wherein the recording unit includes a media slot in which a recording medium for recording the image is detachable.   The camera system according to claim 23, wherein the recording means includes media slots corresponding to a plurality of types of recording media.   The camera system according to any one of claims 1 to 24, wherein the functional unit is an external connection unit for connecting to an external device.   The external connection unit includes a connection cord provided at a tip thereof with a connection terminal connected to the external device, and cord winding means for winding the connection cord into the external connection unit. 25. The camera system according to 25.   The camera system according to any one of claims 1 to 26, wherein the functional unit is an operation unit including an operation input unit for a user to perform an operation input.

Images