WO2012104929A1 - 撮像装置 - Google Patents
撮像装置 Download PDFInfo
- Publication number
- WO2012104929A1 WO2012104929A1 PCT/JP2011/002474 JP2011002474W WO2012104929A1 WO 2012104929 A1 WO2012104929 A1 WO 2012104929A1 JP 2011002474 W JP2011002474 W JP 2011002474W WO 2012104929 A1 WO2012104929 A1 WO 2012104929A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metal plate
- flexible cable
- image
- image sensor
- gnd
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
Definitions
- the present invention relates to an image pickup apparatus such as a digital still camera, and more particularly to an image pickup apparatus that reduces video interference caused by external noise.
- an imaging device such as a digital still camera in an environment where a portable information terminal that emits electromagnetic waves such as a mobile phone and a PHS (simple mobile phone) is used.
- an imaging device such as a digital still camera in an environment where strong electromagnetic waves are radiated, for example, in the vicinity of a radio broadcast station and a television broadcast station.
- the imaging device When using an imaging device in such an environment, the imaging device may be subject to electromagnetic interference.
- An environment in which the imaging apparatus may suffer from such electromagnetic interference is referred to as a “strong electric field environment”.
- an imaging device such as a digital still camera is used in a strong electric field environment, an image captured by the imaging device includes striped noise (beat noise), and video interference may occur.
- the image disturbance becomes more prominent as the performance of the image sensor constituting the image pickup device is higher (by increasing the sensitivity). Further, along with the downsizing of the image pickup apparatus, the amount of coupling of external strong electric field noise increases with respect to the image pickup element incorporated in the downsized image pickup apparatus, and the video interference becomes more remarkable.
- the image pickup apparatus is increased in size and is difficult for the user to handle.
- a conductive filter is added to the surface of the lens, there is a problem that the amount of light incident on the lens is reduced and the image quality is deteriorated.
- the internal configuration of the imaging device becomes complicated, and there is a problem that it is not possible to pursue downsizing of the imaging device as a final product.
- the object of the present invention has been made in view of such circumstances, and even when used in a strong electric field environment, image disturbance due to external noise is achieved without degrading the image quality of a captured image.
- An imaging device that has a simple internal configuration and can be downsized is provided.
- an imaging apparatus of the present invention is an imaging apparatus that captures an image of a subject, and is generated by an imaging device that captures an optical image of the subject and generates image data.
- a main circuit board that performs signal processing on image data, an image sensor flexible cable that mounts the image sensor and is connected to the main circuit board, a mount made of a metal material that fixes the image sensor, and the image sensor and main circuit
- the imaging device flexible cable includes an imaging device flexible cable GND having a ground potential, and the imaging device flexible cable GND is connected to the metal plate. .
- a preferable image sensor flexible cable has a GND exposed part in a part of the image sensor flexible cable GND connected to a metal plate.
- a preferred metal plate is characterized by having a metal plate protrusion that protrudes toward the image sensor, connected to the GND exposed portion.
- the apparatus further includes a connection portion made of a metal material for connecting the mount and the metal plate.
- it further includes a conductive elastic part that connects the metal plate and the GND exposed part.
- each process performed by each configuration of the imaging apparatus of the present invention described above can be regarded as an imaging method that gives a series of processing procedures.
- This method is provided in the form of a program for causing a computer to execute a series of processing procedures.
- This program may be installed in a computer in a form recorded on a computer-readable recording medium.
- the imaging apparatus of the present invention even when used in a strong electric field environment, image disturbance due to external noise is reduced and the internal configuration is simplified without degrading the image quality of the captured image.
- the size can be reduced with a simple configuration.
- FIG. 1 is a perspective view showing an appearance of a digital camera (an example of an imaging apparatus) according to the first embodiment of the present invention.
- FIG. 2 is a perspective view showing an appearance of the camera body 1 with the interchangeable lens unit 2 removed.
- FIG. 3 is a schematic cross-sectional view showing the internal structure of the digital camera.
- FIG. 4 is a functional block diagram of the digital camera.
- FIG. 5 is a cross-sectional view of the internal structure as viewed from the top of the imaging apparatus 100 according to the first embodiment of the present invention.
- FIG. 6 is a perspective view showing the imaging element flexible cable 130.
- FIG. 7 is a perspective view showing the metal plate 150.
- FIG. 8 is a diagram illustrating an example of a signal layer of the imaging element flexible cable 130.
- FIG. 9 is a diagram illustrating an example of the GND layer of the imaging element flexible cable 130.
- FIG. 10 is a diagram illustrating voltages induced at the position of the image sensor 110 when the metal plate 150 and the image sensor flexible cable 130 have a GND connection and when there is no GND connection.
- FIG. 11 is a cross-sectional view of the internal structure viewed from the top of the imaging apparatus 200 according to the second embodiment of the present invention.
- FIG. 12 is a perspective view showing the imaging element flexible cable 130.
- FIG. 13 is a view showing the conductive elastic portion 170.
- FIG. 14 is a perspective view showing the metal plate 150.
- FIG. 1 is a perspective view showing an appearance of a digital camera (an example of an imaging apparatus) according to the first embodiment of the present invention.
- the digital camera according to the first embodiment of the present invention includes a camera body 1 and an interchangeable lens unit 2 that can be attached to the camera body 1.
- FIG. 2 is a perspective view showing an appearance of the camera body 1 with the interchangeable lens unit 2 removed.
- FIG. 3 is a schematic cross-sectional view showing the internal structure of the digital camera.
- FIG. 4 is a functional block diagram of the digital camera.
- the basic configuration of a digital camera according to the first embodiment of the present invention will be described with reference to FIGS.
- the subject side of the digital camera is referred to as the front
- the imaging surface side is referred to as the back or the back.
- the camera body 1 includes a body housing 3, a body mount 4, a camera monitor 5, an electronic viewfinder (EVF) 6, and an operation unit 7.
- the body mount 4 is disposed on the front side of the main body housing 3 so that the interchangeable lens unit 2 can be attached to the camera body 1.
- the camera monitor 5 is disposed on the back side of the main body housing 3 and is configured by a liquid crystal display or the like.
- the EVF 6 is disposed on the back side of the main body housing 3 and displays an image or the like indicated by the display image data.
- the operation unit 7 is disposed on the upper part of the main body housing 3 and includes a power switch 7a and a release button 7b for receiving a shutter operation by the user.
- the interchangeable lens unit 2 has an optical system composed of lens groups arranged on the optical axis AX in order to form an optical image of a subject in a resin lens barrel 2a.
- a zoom ring 25, a focus ring 26, and an OIS (Optical Image Stabilizer) switch 27 are provided on the outer periphery of the lens barrel 2a. By rotating the zoom ring 25 and the focus ring 26, The position of the lens in the lens barrel 2a can be adjusted.
- the body mount 4 enables the interchangeable lens unit 2 to be attached to the camera body 1, and includes a terminal support portion 4a, a body mount ring 4b, and a connection terminal 4c.
- the camera body 1 has a shutter unit 12 and a diaphragm 13 on the front surface of the mounting portion between the camera body 1 and the interchangeable lens unit 2.
- a main circuit board including a circuit board 9 on which an image sensor 8 of CMOS (Complementary Metal Oxide Semiconductor) or CCD (Charge Coupled Device) is mounted and a camera controller 10 is mounted.
- CMOS Complementary Metal Oxide Semiconductor
- CCD Charge Coupled Device
- the body mount 4 the shutter unit 12, the diaphragm 13, the optical low-pass filter 14, the image sensor 8, the circuit board 9, the metal member 20, and the main are sequentially installed from the front.
- a circuit board 11 and a camera monitor 5 are arranged.
- the diaphragm support portion 13a supports the diaphragm 13 so as to be disposed at a predetermined position with respect to the image sensor 8, and is supported by the main frame 18 via the body mount 4 and the shutter unit 12. Has been.
- the diaphragm 13 and the diaphragm support portion 13a prevent dust from adhering to the image sensor 8.
- the optical low-pass filter 14 removes high-frequency components of the subject light so that the subject image formed by the interchangeable lens unit 2 has a resolution that is coarser than the pixel pitch of the image sensor 8.
- an image sensor such as the image sensor 8 is provided with an RGB color filter or a YCM complementary color filter called a Bayer array in each pixel. Therefore, when the resolution is reduced to one pixel, not only a false color is generated, but also a moire phenomenon that is difficult to see in an object with a repetitive pattern occurs. Therefore, the optical low-pass filter 14 is disposed.
- the optical low-pass filter 14 also has an IR cut filter function for cutting infrared light.
- the metal main frame 18 disposed in the main body housing 3 is connected to the terminal support 4 a of the body mount 4 and supports the interchangeable lens unit 2 via the body mount 4.
- the tripod mounting portion 19 having a screw hole for mounting a tripod is mechanically connected to the main frame 18, and the screw hole is exposed on the lower surface of the main body housing 3.
- a metal member 20 disposed so as to surround the circuit board 9 on which the image sensor 8 is mounted is a member for accelerating the release of heat generated by the image sensor 8, and includes the circuit board 9 and the main circuit board. 11 and a metal plate 20a (perpendicular to the optical axis AX) and a heat conducting portion 20b (parallel to the optical axis AX) for transferring the heat of the metal plate 20a to the body mount 4 side.
- the body mount 4 is a component for mounting the interchangeable lens unit 2 on the camera body 1 and is mechanically and electrically connected to the lens mount 21 of the interchangeable lens unit 2.
- the body mount 4 includes a ring-shaped metal body mount ring 4b attached to the front surface of the main body housing 3, and a connection terminal 4c provided on the terminal support 4a.
- the connection terminal 21 a provided on the lens mount 21 is electrically connected to the connection terminal 4 c.
- the body mount ring 4b of the body mount 4 mechanically holds the interchangeable lens unit 2 in the camera body 1 by fitting with the metal lens mount ring 21b of the lens mount 21 provided in the interchangeable lens unit 2.
- the lens mount ring 21b is fitted into the body mount ring 4b by a so-called bayonet mechanism.
- the lens mount ring 21b is engaged with the body mount ring 4b in a first state where the lens mount ring 21b is not fitted with the body mount ring 4b according to the rotational positional relationship around the optical axis with the body mount ring 4b.
- the second state to be combined is taken.
- the lens mount ring 21b can move in the optical axis direction with respect to the body mount ring 4b and can be inserted into the body mount ring 4b.
- the lens mount ring 21b is rotated relative to the body mount ring 4b with the lens mount ring 21b inserted into the body mount ring 4b, the lens mount ring 21b is fitted into the body mount ring 4b.
- the rotational positional relationship between the body mount ring 4b and the lens mount ring 21b at this time is the second state.
- connection terminal 4 c is in electrical contact with the connection terminal 21 a included in the lens mount 21.
- the body mount 4 and the lens mount 21 are electrically connected via the connection terminal 4 c of the body mount 4 and the connection terminal 21 a of the lens mount 21.
- the digital camera can transmit and receive image data signals and control signals between the camera body 1 and the interchangeable lens unit 2 via the body mount 4 and the lens mount 21.
- the body mount 4 and the lens mount 21 transmit and receive image data and control signals between the camera controller 10 and the lens controller 22 included in the interchangeable lens unit 2. Further, the main body housing 3 is provided with a power supply block 15 including a battery for supplying power to each part such as the camera controller 10, and the power supply block 15 is exchanged via the body mount 4 and the lens mount 21. Power is also supplied to the entire lens unit 2.
- the image sensor 8 operates based on a timing signal from a timing signal generator (TG) 9a mounted on the circuit board 9, and images a subject image that is an optical image of a subject incident through the interchangeable lens unit 2. Convert to data to generate still image data, moving image data, and the like.
- the generated image data such as still image data and moving image data is converted into a digital signal by an ADC (analog-digital converter) 9b mounted on the circuit board 9, and various image processing is performed by the camera controller 10.
- various image processes performed by the camera controller 10 include, for example, a gamma correction process, a white balance correction process, a scratch correction process, a YC conversion process, an electronic zoom process, and a JPEG compression process.
- the function of the circuit board 9 may be mounted on the main circuit board 11.
- the image data generated by the image sensor 8 is also used for displaying a through image.
- the through image is an image in which data is not recorded in the memory card 16 among the moving image data, and is displayed on the camera monitor 5 and / or the EVF 6 in order to determine the composition of the moving image or the still image.
- the camera controller 10 is mounted on the main circuit board 11, controls each part of the camera body 1, and sends a signal for controlling the interchangeable lens unit 2 via the body mount 4 and the lens mount 21 to the lens controller 22. Send to. Conversely, the camera controller 10 receives various signals from the lens controller 22 via the body mount 4 and the lens mount 21. In this way, the camera controller 10 indirectly controls each part of the interchangeable lens unit 2.
- the camera controller 10 uses the DRAM 11a mounted on the main circuit board 11 as a work memory during the control operation and the image processing operation. Furthermore, a card slot 17 for inputting / outputting still image data and moving image data to / from the memory card 16 attached to the camera body 1 based on a control signal transmitted from the camera controller 10 is accommodated.
- the shutter unit 12 is a so-called focal plane shutter, and is disposed between the body mount 4 and the image sensor 8 so that light to the image sensor 8 can be shielded.
- the shutter unit 12 has a rear curtain, a front curtain, and a shutter support frame provided with an opening through which light guided from the subject to the image sensor 8 passes, and the rear curtain and the front curtain are moved forward and backward to the opening of the shutter support frame. By adjusting the exposure time, the exposure time of the image sensor 8 is adjusted.
- the interchangeable lens unit 2 includes an optical system including lens groups arranged on an optical axis AX in order to form an optical image of a subject in a resin lens barrel 2a, a lens mount 21, and a lens controller 22.
- a diaphragm unit 23 and a drive unit 24 for driving a lens group of the optical system are provided.
- a zoom ring 25, a focus ring 26, and an OIS switch 27 are provided on the outer periphery of the lens barrel 2a. By rotating the zoom ring 25 and the focus ring 26, a lens in the lens barrel 2a is provided. Can be adjusted.
- the optical system has a zoom lens group 28, an OIS lens group 29, and a focus lens group 30.
- the zoom lens group 28 changes the focal length of the optical system.
- the lens group 29 for OIS suppresses blurring with respect to the image sensor 8 in a subject image formed by the optical system.
- the focus lens group 30 changes the focus state of the subject image formed on the image sensor 8 by the optical system.
- the diaphragm unit 23 is a light amount adjusting member that adjusts the amount of light that passes through the optical system.
- the diaphragm unit 23 includes a diaphragm blade that can block part of the light beam transmitted through the optical system, and a diaphragm blade. And a diaphragm driving unit for driving.
- the driving unit 24 drives each lens group of the above-described optical system based on the control signal of the lens controller 22, and has a detection unit for detecting the position of each lens group of the optical system.
- the lens controller 22 controls the entire interchangeable lens unit 2 based on a control signal transmitted from the camera controller 10 in the camera body 1.
- the lens controller 22 receives the position information of each lens group of the optical system detected by the detection unit of the drive unit 24 and transmits it to the camera controller 10.
- the camera controller 10 generates a control signal for controlling the drive unit 24 based on the received position information, and transmits the control signal to the lens controller 22.
- the lens controller 22 transmits a control signal generated by the camera controller 10 to the driving unit 24, and the driving unit 24 determines the positions of the lens groups 28, 29, and 30 based on the control signal from the lens controller 22. Adjust.
- the camera controller 10 is based on information indicating the amount of light received by the image sensor 8, whether still image shooting or moving image shooting is performed, and whether an aperture value is preferentially set. Thus, a control signal for operating the aperture unit 23 is generated. At this time, the lens controller 22 relays the control signal generated by the camera controller 10 to the aperture unit 23.
- the interchangeable lens unit 2 holds a DRAM 22a and a flash memory 22b.
- the DRAM 22a is stored in the work memory.
- Use as A program and parameters used by the lens controller 22 are stored in the flash memory 22b.
- the digital camera (an example of an image pickup apparatus) according to the first embodiment of the present invention has been described with reference to FIGS. 1 to 4, but the control of the GND potential of the image pickup element flexible cable described later is used. Any other imaging device may be used.
- control of the GND potential of the image sensor flexible cable will be described in detail as a means for reducing image interference due to external noise.
- FIG. 5 is a cross-sectional view of the internal structure as seen from the top of the imaging apparatus 100 according to the first embodiment of the present invention.
- the control of the GND potential of the imaging device flexible cable will be mainly described, and detailed description will be omitted except for the control, but the basic configuration of the imaging device 100 will be described with reference to FIGS. 1 to 4.
- the configuration is the same as the digital camera described.
- the imaging apparatus 100 includes an imaging element 110, a main circuit board 120, an imaging element flexible cable 130, a mount 140, a metal plate 150, and a connection portion 160.
- the imaging element flexible cable 130 has a GND exposed portion 131
- the metal plate 150 has a metal plate protrusion 151.
- the image sensor 110 is, for example, a CMOS or a CCD, and is the image sensor 8 and the circuit board 9 described above.
- the image sensor 110 converts a subject image that is an optical image of a subject incident through a lens into image data, and generates still image data, moving image data, and the like.
- the main circuit board 120 performs various signal processing on the image data generated by the image sensor 110.
- the various signal processes are various image processes performed by the camera controller 10 described above.
- the gamma correction process, the white balance correction process, the scratch correction process, the YC conversion process, the electronic zoom process, and the JPEG For example, compression processing.
- the imaging element flexible cable 130 is, for example, the circuit board 9 described above, and the imaging element 110 is mounted thereon.
- the image sensor flexible cable 130 is connected to the main circuit board 120.
- the imaging element flexible cable 130 includes an imaging element flexible cable GND, and typically, a part of the imaging element flexible cable GND is the GND exposed portion 131.
- the GND exposed portion 131 is connected to the metal plate protrusion 151 in the metal plate 150.
- the mount 140 is, for example, the body mount 4 described above, which allows the main body housing and a lens unit (not shown) to be mounted, and further fixes the image sensor 110.
- the mount 140 also fixes an SSWF (Super Sonic Wave Filter) (not shown), a shutter unit (not shown), and a flash unit (not shown) that remove dust on the surface of the image sensor 110.
- the mount 140 is made of, for example, a metal material such as aluminum and susceptor for reliability against heat dissipation and drop impact and countermeasures against unnecessary electromagnetic radiation.
- the metal plate 150 is disposed between the image sensor 110 and the main circuit board 120 and has a metal plate protrusion 151 that protrudes toward the image sensor 110.
- the metal plate protrusion 151 is electrically connected to the GND exposed portion 131 of the imaging element flexible cable 130. Details of the connection portion between the GND exposed portion 131 and the metal plate protrusion 151 will be described later.
- the metal plate 150 including the metal plate protrusion 151 is, for example, the metal plate 20a in the metal member 20 described above, and is made of a metal material having high thermal conductivity and high conductivity such as aluminum and copper. The heat generated from the image sensor 110 is efficiently released.
- connection unit 160 electrically connects the mount 140 and the metal plate 150.
- the connection portion 160 is typically a screw made of a metal material, and fixes the mount 140 and the metal plate 150.
- FIG. 6 is a perspective view showing the imaging element flexible cable 130.
- the image sensor flexible cable 130 has a GND exposed portion 131.
- the surface of the imaging element flexible cable 130 is formed of an insulating layer such as a resist, for example, for surface protection, but the resist is peeled off from the GND exposed portion 131. Then, the GND exposed portion 131 and the metal plate protrusion 151 in the metal plate 150 are connected.
- FIG. 7 is a perspective view showing the metal plate 150.
- the metal plate 150 has a metal plate protrusion 151.
- the metal plate protrusion 151 is formed based on the shape and position of the GND exposed portion 131 in the imaging element flexible cable 130 shown in FIG.
- the positions and shapes of the GND exposed portion 131 and the metal plate protruding portion 151 are not limited to those shown in FIGS. 6 and 7, and the GND exposed portion 131 and the metal plate protruding portion 151 are electrically connected. Any other position and shape may be used as long as they are connected to each other.
- the mount 140 and the metal plate 150 are fixed by the connection portion 160, and at that time, the GND exposed portion 131 and the metal plate protrusion 151 are fixed so as to be in close contact with each other.
- FIG. 8 is a diagram illustrating an example of a signal layer of the imaging element flexible cable 130.
- an image sensor mounting portion for mounting the image sensor 110 is provided at the center of the image sensor flexible cable 130, and the main circuit board 120 is provided at the end of the image sensor flexible cable 130.
- the connection part is provided.
- signal wiring is provided between the image sensor mounting portion and the connection portion between the main circuit board 120, and the GND exposed portion 131 is provided in a portion where no signal wiring is provided. Is set.
- the signal layer of the image sensor flexible cable 130 is connected to the metal plate protrusion 151 of the metal plate 150, and is connected to the GND layer of the image sensor flexible cable 130 described later by via holes.
- FIG. 9 is a diagram illustrating an example of the GND layer of the imaging element flexible cable 130.
- a connection portion with the main circuit board 120 is provided at the end of the imaging element flexible cable 130, and the connection portion with the main circuit board 120 is provided.
- the other part is the entire surface GND. The surface is protected with a resist.
- the GND layer of the image sensor flexible cable 130 is connected to the GND exposed portion 131 of the signal layer of the image sensor flexible cable 130 shown in FIG.
- FIG. 10 is a diagram illustrating voltages induced at the position of the image sensor 110 when the metal plate 150 and the image sensor flexible cable 130 have GND connection and when there is no GND connection.
- the imaging apparatus 100 is irradiated with a uniform external electromagnetic field of 3 V / m, and the voltage induced at the position of the imaging device 110 is calculated using an FDTD (Finite Difference Time Domain) method. The simulation results are shown.
- FDTD Finite Difference Time Domain
- the horizontal axis represents the frequency of the external electromagnetic field to be applied
- the vertical axis represents the intensity of the voltage induced at the position of the image sensor 110.
- the solid line indicates the strength of the voltage when there is a GND connection between the metal plate 150 and the imaging element flexible cable 130
- the broken line indicates the voltage strength when there is no GND connection between the metal plate 150 and the imaging element flexible cable 130. Indicates strength.
- the case where there is no GND connection between the metal plate 150 and the imaging element flexible cable 130 is, for example, the case where there is no metal plate protrusion 151 of the metal plate 150 and is not connected to the GND exposed portion 131 of the imaging element flexible cable 130. It is.
- the metal plate 150 and the image sensor flexible cable 130 are connected to the GND by being induced in the image sensor 110 as compared to the case where the metal plate 150 and the image sensor flexible cable 130 are not GND connected.
- the voltage is decreasing. As a result, it is possible to reduce video interference with respect to an image captured by the imaging apparatus 100.
- the GND exposed portion 131 of the imaging element flexible cable 130 and the metal plate protrusion 151 of the metal plate 150 are electrically connected.
- the GND impedance of the imaging element flexible cable 130 can be reduced, and as a result, fluctuations in the GND potential of the imaging element flexible cable 130 can be suppressed.
- the imaging apparatus 100 even when used in a strong electric field environment, image disturbance due to external noise is reduced without degrading the image quality of the image to be captured.
- the internal configuration is simple and the miniaturization can be realized.
- FIG. 11 is a cross-sectional view of the internal structure viewed from the top of the imaging apparatus 200 according to the second embodiment of the present invention.
- the control of the GND potential of the imaging device flexible cable will be mainly described, and detailed explanations other than the control will be omitted, but the basic configuration of the imaging device 200 will be described with reference to FIGS. 1 to 4.
- the configuration is the same as the digital camera described.
- the imaging device 200 includes an imaging element 110, a main circuit board 120, an imaging element flexible cable 130, a mount 140, a metal plate 150, a connection portion 160, and a conductive elastic portion 170.
- the imaging element flexible cable 130 has a GND exposed portion 132
- the metal plate 150 has a metal plate recess 152.
- FIG. 11 the same components as those of the image pickup apparatus 100 according to the first embodiment of the present invention shown in FIG. Here, differences from the first embodiment of the present invention will be mainly described.
- the imaging element flexible cable 130 includes an imaging element flexible cable GND, and a part of the imaging element flexible cable GND is a GND exposed portion 132.
- the GND exposed portion 132 is electrically connected to the metal plate recess 152 in the metal plate 150 through the conductive elastic portion 170.
- the metal plate 150 is disposed between the image sensor 110 and the main circuit board 120 and does not have the metal plate protrusion 151 protruding toward the image sensor 110 shown in FIG.
- a metal plate recess 152 is provided.
- the conductive elastic portion 170 is connected to the metal plate recess 152. Details of the connection portion between the metal plate 150 and the conductive elastic portion 170 in the metal plate recess 152 will be described later.
- FIG. 12 is a perspective view showing the imaging element flexible cable 130.
- the image sensor flexible cable 130 has a GND exposed portion 132.
- the surface of the imaging element flexible cable 130 is formed of an insulating layer such as a resist for surface protection, for example, but the resist is peeled off from the GND exposed portion 132.
- the tip end portion of the conductive elastic portion 170 is connected.
- the GND exposed portion 132 of the imaging element flexible cable 130 may have a concave portion, for example, in accordance with the shape of the distal end portion of the conductive elastic portion 170.
- FIG. 13 is a diagram showing the conductive elastic portion 170.
- the conductive elastic portion 170 is made of a metal having elasticity such as aluminum and copper and having high conductivity. Further, in the GND exposed portion 132 of the metal plate 150 and the image sensor flexible cable 130, the conductive elastic portion 170 has a protruding configuration so that the tip end portion is stably connected.
- the protrusion shape is trapezoidal, but may have a curved surface shape, for example. Since the protrusion shape has a curved surface shape, the contact resistance between the metal plate 150 and the GND exposed portion 132 of the imaging element flexible cable 130 can be reduced.
- FIG. 14 is a perspective view showing the metal plate 150.
- the metal plate 150 has a metal plate recess 152.
- the metal plate recessed part 152 is formed based on the protrusion shape of the front-end
- the shape of the metal plate recess 152 of the metal plate 150 and the protrusion shape of the tip of the conductive elastic portion 170 are not limited to those shown in FIGS. Other shapes may be used as long as the metal plate recess 152 and the tip of the conductive elastic portion 170 are in close contact and electrically connected.
- the GND exposed portion 132 of the imaging element flexible cable 130 and the metal plate concave portion 152 of the metal plate 150 are electrically connected via the conductive elastic portion 170, whereby the first of the present invention.
- the voltage induced in the image sensor 110 is reduced, and as a result, the video interference on the image captured by the image capturing apparatus 200 can be reduced.
- the GND exposed portion 132 of the imaging element flexible cable 130 and the metal plate concave portion 152 of the metal plate 150 are electrically connected to the conductive elastic portion 170.
- the GND impedance of the image sensor flexible cable 130 can be reduced, and as a result, fluctuations in the GND potential of the image sensor flexible cable 130 can be suppressed.
- the imaging apparatus 200 according to the second embodiment of the present invention even when used in a strong electric field environment, image disturbance due to external noise is reduced without degrading the image quality of the captured image.
- the internal configuration is simple and the miniaturization can be realized.
- the metal plate 150 does not have a protrusion on the imaging element 110 side, no stress is applied to the imaging element 110, and the imaging element flexible.
- the GND of the cable 130 and the metal plate 150 can be electrically connected.
- the present invention can be used for an image pickup apparatus such as a digital camera, and is particularly useful for an image pickup apparatus used in a strong electric field environment.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Studio Devices (AREA)
- Camera Bodies And Camera Details Or Accessories (AREA)
- Structure And Mechanism Of Cameras (AREA)
Abstract
Description
<第1の実施形態>
図1は、本発明の第1の実施形態に係るデジタルカメラ(撮像装置の一例)の外観を示す斜視図である。本発明の第1の実施形態に係るデジタルカメラは、カメラ本体1と、カメラ本体1に装着可能な交換レンズユニット2とを備えている。図2は、交換レンズユニット2を取り外したカメラ本体1の外観を示す斜視図である。図3は、デジタルカメラの内部構造を示す概略断面図である。図4は、デジタルカメラの機能ブロック図である。
ボディマウント4とレンズマウント21とは、カメラコントローラー10と交換レンズユニット2に含まれるレンズコントローラー22との間で、画像データおよび制御信号を送受信している。また、本体筐体3内には、カメラコントローラー10などの各部に電源を供給する電池などからなる電源ブロック15を備えており、当該電源ブロック15は、ボディマウント4およびレンズマウント21を介して交換レンズユニット2全体にも電力を供給する。
交換レンズユニット2は、樹脂製のレンズ鏡筒2a内に、被写体の光学像を形成するために光軸AX上に配列されたレンズ群からなる光学系と、レンズマウント21と、レンズコントローラー22と、絞りユニット23と、光学系のレンズ群を駆動するための駆動部24とを備えている。
図11は、本発明の第2の実施形態に係る撮像装置200の上部から見た内部構造の断面図である。ここでは、主に、撮像素子フレキシブルケーブルのGND電位の制御について説明し、当該制御以外については詳細な説明は省略するが、撮像装置200の基本的な構成は、図1~図4を用いて説明したデジタルカメラと同様の構成である。
2 交換レンズユニット
2a レンズ鏡筒
3 本体筐体
4 ボディマウント
4a 端子支持部
4b ボディマウントリング
4c 接続端子
5 カメラモニタ
6 EVF
7 操作部
7a 電源スイッチ
7b レリーズ釦
8 イメージセンサー
9 回路基板
9a タイミング信号発生器
9b ADC
10 カメラコントローラー
11 メイン回路基板
11a、22a DRAM
12 シャッターユニット
13 振動板
13a 振動板支持部
14 光学的ローパスフィルター
15 電源ブロック
16 メモリーカード
17 カードスロット
18 メインフレーム
19 三脚取付部
20 金属製部材
20a 金属板
20b 熱伝導部
21 レンズマウント
21a 接続端子
21b レンズマウントリング
22 レンズコントローラー
22b フラッシュメモリ
23 絞りユニット
24 駆動部
25 ズームリング
26 フォーカスリング
27 OISスイッチ
28、29、30 レンズ群
100、200 撮像装置
110 撮像素子
120 メイン回路基板
130 撮像素子フレキシブルケーブル
131、132 GND露出部
140 マウント
150 金属板
151 金属板突起部
152 金属板凹部
160 接続部
170 導電性弾性部
Claims (5)
- 被写体を撮像する撮像装置であって、
前記被写体の光学像を撮像して画像データを生成する撮像素子と、
前記撮像素子によって生成された画像データに信号処理を施すメイン回路基板と、
前記撮像素子を実装し、前記メイン回路基板に接続される撮像素子フレキシブルケーブルと、
前記撮像素子を固定する金属材料で構成されたマウントと、
前記撮像素子と前記メイン回路基板との間に配置される金属板とを備え、
前記撮像素子フレキシブルケーブルは、接地電位を有する撮像素子フレキシブルケーブルGNDを含み、
前記撮像素子フレキシブルケーブルGNDは、前記金属板に接続されることを特徴とする、撮像装置。 - 前記撮像素子フレキシブルケーブルは、前記金属板に接続される、前記撮像素子フレキシブルケーブルGNDの一部にGND露出部を有することを特徴とする、請求項1記載の撮像装置。
- 前記金属板は、前記GND露出部に接続される、前記撮像素子側に突起する金属板突起部を有することを特徴とする、請求項2記載の撮像装置。
- 前記マウントと前記金属板とを接続する金属材料で構成された接続部を、さらに備えることを特徴とする、請求項1記載の撮像装置。
- 前記金属板と前記GND露出部とを接続する導電性弾性部を、さらに備えることを特徴とする、請求項2記載の撮像装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012504971A JPWO2012104929A1 (ja) | 2011-01-31 | 2011-04-27 | 撮像装置 |
US13/391,626 US8421912B2 (en) | 2011-01-31 | 2011-04-27 | Imaging device |
CN201180003431.8A CN102823229B (zh) | 2011-01-31 | 2011-04-27 | 拍摄装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011018884 | 2011-01-31 | ||
JP2011-018884 | 2011-01-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012104929A1 true WO2012104929A1 (ja) | 2012-08-09 |
Family
ID=46602177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/002474 WO2012104929A1 (ja) | 2011-01-31 | 2011-04-27 | 撮像装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8421912B2 (ja) |
JP (1) | JPWO2012104929A1 (ja) |
CN (1) | CN102823229B (ja) |
WO (1) | WO2012104929A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5830639B2 (ja) * | 2011-02-02 | 2015-12-09 | パナソニックIpマネジメント株式会社 | 撮像装置 |
CN102971667B (zh) * | 2011-07-01 | 2015-12-23 | 松下电器产业株式会社 | 摄像装置 |
JP2013172245A (ja) * | 2012-02-20 | 2013-09-02 | Sony Corp | カメラ装置、電子装置およびフレキシブルシャーシ |
WO2013152402A1 (en) * | 2012-04-13 | 2013-10-17 | Blackmagic Design Pty Ltd | Camera |
US9131134B2 (en) * | 2013-05-24 | 2015-09-08 | Sony Corporation | Camera and optical apparatus |
CN107113371B (zh) | 2015-11-23 | 2020-06-05 | 深圳市大疆创新科技有限公司 | 影像撷取模组及航拍飞行器 |
JP6628608B2 (ja) * | 2016-01-04 | 2020-01-08 | キヤノン株式会社 | 電子機器及び撮像装置 |
US10133158B2 (en) * | 2016-10-17 | 2018-11-20 | Panasonic Intellectual Property Management Co., Ltd. | Imaging device |
JP7465063B2 (ja) | 2019-03-29 | 2024-04-10 | ニデックインスツルメンツ株式会社 | 光学ユニット |
JP7449666B2 (ja) * | 2019-09-26 | 2024-03-14 | 京セラ株式会社 | 撮像装置及び移動体 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005065014A (ja) * | 2003-08-18 | 2005-03-10 | Canon Inc | 撮像装置 |
JP2005065015A (ja) * | 2003-08-18 | 2005-03-10 | Canon Inc | 固体撮像素子の保持構造 |
JP2007274624A (ja) * | 2006-03-31 | 2007-10-18 | Citizen Miyota Co Ltd | カメラモジュール |
JP2009200987A (ja) * | 2008-02-25 | 2009-09-03 | Kyocera Corp | 撮像モジュール |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6829011B1 (en) * | 1999-09-02 | 2004-12-07 | Olympus Optical Co., Ltd. | Electronic imaging device |
JP3983120B2 (ja) * | 2001-07-30 | 2007-09-26 | 富士通日立プラズマディスプレイ株式会社 | Icチップの実装構造及びディスプレイ装置 |
JP2005027041A (ja) * | 2003-07-02 | 2005-01-27 | Renesas Technology Corp | 固体撮像装置 |
JP4767778B2 (ja) * | 2005-08-25 | 2011-09-07 | 富士フイルム株式会社 | フレキシブル基板及び撮影装置 |
US20070291126A1 (en) * | 2006-06-20 | 2007-12-20 | Matsushita Electric Industrial Co., Ltd. | Camera with interchangeable lenses having electrical circuitry |
JP2008091446A (ja) * | 2006-09-29 | 2008-04-17 | Matsushita Electric Ind Co Ltd | 半導体装置とその製造方法 |
JP2008198669A (ja) | 2007-02-08 | 2008-08-28 | Sony Corp | 撮像装置及び撮像装置の製造方法 |
JP2008211378A (ja) | 2007-02-23 | 2008-09-11 | Auto Network Gijutsu Kenkyusho:Kk | 撮像装置 |
JP2009082503A (ja) * | 2007-09-28 | 2009-04-23 | Fujifilm Corp | 撮像装置及びその撮像装置を備えた内視鏡 |
JP2010220000A (ja) * | 2009-03-18 | 2010-09-30 | Alps Electric Co Ltd | 基板一体型カメラモジュール |
US8251601B2 (en) * | 2010-12-21 | 2012-08-28 | Visera Technologies Company Limited | Camera module and method for fabricating the same |
JP5830639B2 (ja) * | 2011-02-02 | 2015-12-09 | パナソニックIpマネジメント株式会社 | 撮像装置 |
JPWO2012111044A1 (ja) * | 2011-02-14 | 2014-07-03 | パナソニック株式会社 | 撮像装置 |
-
2011
- 2011-04-27 JP JP2012504971A patent/JPWO2012104929A1/ja active Pending
- 2011-04-27 US US13/391,626 patent/US8421912B2/en active Active
- 2011-04-27 CN CN201180003431.8A patent/CN102823229B/zh active Active
- 2011-04-27 WO PCT/JP2011/002474 patent/WO2012104929A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005065014A (ja) * | 2003-08-18 | 2005-03-10 | Canon Inc | 撮像装置 |
JP2005065015A (ja) * | 2003-08-18 | 2005-03-10 | Canon Inc | 固体撮像素子の保持構造 |
JP2007274624A (ja) * | 2006-03-31 | 2007-10-18 | Citizen Miyota Co Ltd | カメラモジュール |
JP2009200987A (ja) * | 2008-02-25 | 2009-09-03 | Kyocera Corp | 撮像モジュール |
Also Published As
Publication number | Publication date |
---|---|
CN102823229A (zh) | 2012-12-12 |
US8421912B2 (en) | 2013-04-16 |
CN102823229B (zh) | 2016-08-24 |
JPWO2012104929A1 (ja) | 2014-07-03 |
US20120314119A1 (en) | 2012-12-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5830639B2 (ja) | 撮像装置 | |
WO2012104929A1 (ja) | 撮像装置 | |
JP5221824B1 (ja) | 撮像装置 | |
JP5234188B2 (ja) | デジタルカメラおよび交換レンズユニット | |
WO2012111044A1 (ja) | 撮像装置 | |
JP5221821B1 (ja) | 撮像装置 | |
JP5273296B2 (ja) | デジタルカメラ | |
JP5221823B1 (ja) | 撮像装置 | |
JP2016219610A (ja) | 電子機器 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201180003431.8 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012504971 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13391626 Country of ref document: US |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11857770 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 11857770 Country of ref document: EP Kind code of ref document: A1 |