JP2015203826A - imaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which when a 3D picture-taking is possible and an interchangeable lens is configured to be interchangeable, a center of gravity varies with the number of lenses to be mounted, and when the center of gravity varies, accessories and the like to be attached to a body are shifted and thus, a stable picture-taking is disabled.SOLUTION: In an imaging device comprising a first lens detachment part and second lens detachment part that are capable of interchanging a lens, when two lens detachment parts are horizontally juxtaposed, the imaging device has a plurality of accessory attachment parts, and at least one of the plurality of accessory attachment parts is located at a substantially equal distance from an optical axis of two lens detachment parts and at least one of the plurality of accessory attachment parts is on a substantially optical axis extension line of the lens detachment part. The accessory attachment part located at the substantially equal distance from the optical axis of two lens detachment parts is provided at a location close to the lens detachment part in the optical axis direction further than the accessory attachment part present substantially on the optical axis extension line of the lens detachment part.

Description

  The present invention relates to an imaging apparatus capable of capturing a 3D video.

  In recent years, a video camera in which two imaging units are arranged in parallel has been proposed as an imaging apparatus capable of performing not only conventional 2D video (hereinafter 2D) shooting but also 3D video (hereinafter 3D) shooting (Patent Document 1). reference).

JP 2010-56865 A

  However, in the above-described imaging apparatus, there is a problem that it is impossible to shoot with an arbitrary lens attached because one fixed type of photographing lens is fixed.

  When 3D photography is possible and lens replacement is possible, the center of gravity changes depending on the number of attached lenses. When the center of gravity changes, accessories attached to the main body are biased, and there is a problem that stable photographing cannot be performed.

  The present invention has been made in view of such circumstances, and an object of the present invention is to enable stable imaging in an imaging apparatus capable of 3D imaging.

The configuration of the imaging apparatus according to the present invention includes a first lens detachable portion and a second lens detachable portion that are interchangeable lenses,
When the two lens attaching / detaching portions are arranged horizontally,
The imaging device has a plurality of accessory attachment portions, and at least one of the plurality of accessory attachment portions is located at an approximately equal distance from the optical axis of the two lens attachment / detachment portions,
At least one of the plurality of accessory attaching portions is on a substantially optical axis extension line of the lens attaching / detaching portion,
The accessory attaching part located at substantially the same distance from the optical axis of the two lens attaching / detaching parts is closer to the lens attaching / detaching part in the optical axis direction than the accessory attaching part on the substantially optical axis extension line of the lens attaching / detaching part. It is characterized by being provided in position.
Further, the accessory attaching portion is a tripod attaching portion or a gripping means attaching portion.

  According to the imaging apparatus of the present invention, stable imaging can be performed in an imaging apparatus capable of exchanging lenses and performing 3D imaging.

External perspective view of the digital video camera 101 in this embodiment External perspective view of the digital video camera 101 in this embodiment External perspective view of the digital video camera 101 in this embodiment External perspective view of the digital video camera 101 in this embodiment Mount side perspective view of lens used in this example The perspective view in the 1st mount 104 exposure state of the main body 103 Front view of the main body 103 with the mount exposed (A) is a perspective view of a state in which the second mount 105 has been rotated to the retracted state, (b) is a detailed view of the periphery of the drawer rotation hinge 501, and (c) is a view of the periphery of the drawer rotation hinge 501 viewed from a different angle, (D) is a view of the periphery of the drawer rotation hinge 501 viewed from another angle. (A) is a top view of the digital video camera 101 with the convergence angle adjusted to 3 degrees, and (b) is an angle formed by the optical axis of the first lens and the optical axis of the second lens wider than parallel. Top view of the digital video camera 101 in a state System diagram of digital video camera 101 Top view internal configuration overview of digital video camera 101 Shooting mode switching flow of the digital video camera 101 Convergence angle warning display flow of the digital video camera 101 External perspective view in a state where the lens 102 is attached only to the first mount 104

  Hereinafter, the configuration of the imaging apparatus according to the present invention will be described. 1A, 1B, 1C, and 1D are external perspective views of a digital video camera 101 as an image pickup apparatus according to the present embodiment. The x-axis shown in FIG. 1A is the left and right sides of the main body, and the front side of the main body is defined as the right side and the back side of the main surface is defined as the left side. The z axis shown in FIG. 1A indicates the front and rear of the main body, and the front side of the main body of the main body is defined as the front surface and the rear side of the main surface is defined as the rear surface. The y-axis shown in FIG. 1A indicates the upper and lower sides of the main body, and the upper side of the main surface of the main body is defined as the upper surface and the lower side of the paper surface is defined as the lower surface.

  The appearance of the digital video camera 101 will be described. The digital video camera 101 is configured such that a lens 102 and a main body 103 can be attached and detached in the same manner as a general single-lens reflex camera.

  A portion where the lens 102 and the main body 103 are joined will be described below as a mount. The digital video camera 101 includes a first mount 104 and a second mount 105, and a single lens can be attached to and detached from each mount. The lens 102 used in the following description refers to what is attached to the first mount 104, and the lens attached to the second mount 105 is distinguished as a lens 112. The first lens 102 is provided with a lens operation member 113, and the second lens 112 is provided with a lens operation member 114.

  The first mount 104 and the second mount 105, like the mount of a general single-lens reflex camera, are engaged with the engaging claws by rotation after the lens is inserted, and the lock pin is engaged with the recess of the lens. By doing so, it is locked. A handle member 106 and a display unit 107 can be attached to the upper surface of the main body 103. The mounting structure will be described later.

  The display unit 107 includes a display screen for displaying a through image and a reproduced image at the time of shooting, and an operation unit 108. The main body 103 is connected using a connection cable (not shown).

  The operation unit 108 can perform shooting, reproduction operation, and setting operation of the digital video camera 101. A battery 109 as external power supply means is connected to the rear part of the main body. It is also possible to supply power from a power supply terminal (not shown). A grip portion 110 is formed on the left side of the main body, and an operation member 111 is disposed on the grip portion 110.

  Next, the mount structure will be described in detail with reference to the drawings. FIG. 2 shows a perspective view of the mount side of the lens used in this embodiment. FIG. 3 shows a perspective view of the main body 103 with the first mount 104 exposed.

  The lens includes three engaging claws 201, a lens-side mount contact 202, an insertion index 203, and a lock pin insertion recess 204 as shown in the figure.

  The main body mount is provided with lens insertion holes 301, three lens engaging claws 302, a main body side mounting contact 303, an index 304, a lock pin 305, and a lock pin operating member 306 as shown in the figure.

  The lens 102 is attached in the same manner as a general single-lens reflex camera by inserting the lens engagement claw 201 into the lens insertion hole 301 at the position where the insertion index 203 provided on the lens and the index 304 on the body are aligned. Then, the lens 102 is rotated clockwise with respect to the main body 103 in a state where the abutting surface 205 of the lens is in contact with the mount surface 307 of the main body. When the insertion index 203 and the index 304 are combined, the lock pin 305 of the main body is pushed back by the abutting surface 205 of the lens, and when the lens 102 is rotated to the lock position, the lock pin 305 is moved to the lens. The rotation is stopped by being inserted into the lock pin insertion recess 204.

  When the lens 102 is in the locked position with respect to the main body 103, the lens side mount contact 202 and the main body side mount contact 303 are aligned to be communicable.

  When removing the lens 102, the lock pin 305 is retracted by pressing the lock pin operating member 306 in order to retract the lock pin 305, and the lens 102 is rotatable with respect to the main body 103. Is rotated counterclockwise, and the engaging claw 302 of the lens 102 is aligned with the lens insertion hole 301 of the main body 103 so that the lens 102 can be removed.

  FIG. 4 shows a front view of the main body 103 with the mount exposed. When the first mount and the second mount are mounts of the same standard, and when the mounts are arranged in parallel at the same phase, either one of the lock pin operating members will be between the mounts. There has been a problem that it is difficult to operate the lock pin operating member during removal. If the same lens is attached to the first mount and the second mount mounted on the same phase, the operation member provided on one of the lenses is sandwiched between the other lens. Therefore, there was a problem that it was difficult to operate.

  Therefore, the first mount 104 and the second mount 105 of the digital video camera 101 in the present embodiment are configured so that one of the first mount 104 and the second mount 105 is rotated 180 degrees with respect to the other, thereby eliminating the above-described problems. ing. That is, as shown in FIG. 4, by shifting the phase by 180 degrees, the lock pin operation member 306 of the first mount 104 and the lock pin operation member 401 of the second mount 105 are separated from each other on the left and right of the product. It is possible. Further, as shown in FIGS. 1A and 1C, since the operation members 113 and 114 of the lenses 102 and 112 attached to the respective lenses are positioned on the outer side surface of the digital video camera 101, the other lens. It is possible to perform the operation without hiding the operation member.

  FIG. 5A shows a perspective view of the second mount 105 rotated to the retracted state. The second mount portion 105 of the digital video camera 101 is connected to the main body 103 provided with the first mount 104 via a drawer rotation hinge 501. The drawer rotation hinge 501 can change the distance between the optical axes of the first mount 104 and the second mount 105 and adjust the convergence angle formed by the optical axes of the first mount 104 and the second mount 105. Is possible.

  The drawer rotation hinge 501 can rotate the second mount about the rotation axis 502, and the rotation rotates the optical axis of the first mount and the optical axis of the second mount to a substantially right angle as shown in FIG. It is configured to be able to move. When the user of the digital video camera 101 removes the lens attached to the second mount, the second mount is rotated so that the angle formed by the optical axes of the first mount and the second mount becomes wider than parallel. When the lens is removed in such a state, the removed lens does not collide with the lens attached to the first mount, and can be easily removed.

  In addition, by forming a mount storage position in which the second mount is rotated and brought into contact with the right side surface of the main body, when the lens is attached only to the first mount of the digital video camera 101, It is possible to reduce the lateral width of the digital video camera 101 during transportation without attaching a lens to either mount.

  FIG. 5B shows a top view around the drawer rotation hinge 501. The drawer rotation hinge is configured so that it can be pulled out by moving a caulking portion 505 that moves integrally with the movable sheet metal 506 along a long hole 504 provided in a fixed sheet metal 503 fixed to the main body 103. . In the drawing direction, the drawing motor 507 attached to the fixed sheet metal 503 rotates the screw provided on the rotating shaft and moves the rack 509 provided on the moving sheet metal 506, thereby enabling the drawing operation. It is configured. In addition, a rotary motor 508 for rotating the rotary shaft 502 is attached to the movable metal plate 506, and the second mount 105 is configured to be rotatable.

  The pull-out amount and rotation amount of the pull-out rotation hinge 501 can be detected by a pull-out amount detection unit 511 and a rotation amount detection unit 512 mounted on the flexible substrate 510 attached to the pull-out rotation hinge 501. The detected pull-out amount and rotation amount can be displayed on the display unit 107 described later. In addition, various numerical values calculated from the detected pull-out amount and rotation amount can be displayed on the display unit 107.

  FIG. 6A shows a top view of the digital video camera 101 with the convergence angle adjusted to 3 degrees. A chain line in FIG. 6A indicates the optical axis 601 of the first lens 102 and the optical axis 602 of the second lens 112.

  In order to shoot a stereoscopically viewable 3D image, the distance between the optical axes and the two light beams can be selected according to the nature of the lens to be attached, the type of subject, the stereoscopic effect desired by the user of the digital video camera 101, It is necessary to be able to adjust the convergence angle formed by the shaft. In the case of FIG. 6A, the content of “angle of convergence 3 degrees” can be displayed on the display unit 107.

  FIG. 6B is a top view of the digital video camera 101 in a state where the angle formed by the optical axis 601 of the first lens and the optical axis 602 of the second lens is wider than parallel. When performing 3D shooting, as shown in FIG. 6A, the angle formed by the optical axis 601 of the lens and the optical axis 602 of the second lens is narrower than parallel, and when removing the lens, as described above. The angle formed by the optical axis 601 of the lens and the optical axis 602 of the second lens is made wider than parallel. However, if 3D shooting is performed in a state where the angle formed by the optical axis 601 of the lens and the optical axis 602 of the second lens is wider than parallel, an image captured by the two lenses cannot be used as a 3D image. A flow for displaying a warning in this case will be described later.

  In addition, two accessory mounting members 701 and 702 are provided on the upper surface of the digital video camera 101. The accessory mounting members 701 and 702 are general camera accessory mounting members made of two engagement rails as shown in the figure.

  The first accessory mounting member 701 is disposed at substantially the same distance from the optical axis 601 of the first mount 104 and the optical axis 602 of the second mount 105. The second accessory mounting member 702 is disposed substantially on the optical axis of the first mount 104 and is disposed on the rear side of the product relative to the first accessory mounting member 701. A handle member 106 attached to hold the digital video camera 101 can be attached to the two accessory attachment members 701 and 702.

  Two tripod mounting portions 705 and 706 in which a tripod mounting screw 703 and a tripod rotation stop hole 704 are combined are provided on the bottom surface of the main body, and the optical axis 601 of the first mount 104 and the optical axis of the second mount 105 are provided. It is arranged at approximately the same distance from 602. Further, the second tripod mounting portion is disposed on the substantially optical axis of the first mount 104 and is disposed on the rear side of the product with respect to the first tripod mounting portion 705.

  FIG. 7 shows a system diagram of the digital video camera 101. Subject information incident from the lens 102 attached to the first mount 104 is photoelectrically converted by the first image sensor 801, and the first image sensor substrate 802 on which the first image sensor 801 is mounted is arranged on the first image sensor substrate 802. The digital signal is converted into a digital signal by one AD conversion element 803, processed as image information by a camera information processing IC 805 on the main board 804, and then converted into a video signal by a video signal processing IC 806.

  In addition, subject information incident from the lens 112 attached to the second mount 105 is photoelectrically converted by the second image sensor 807, and is disposed on the second image sensor substrate 808 on which the second image sensor 807 is mounted. The digital signal is converted by the second AD conversion element 809, processed as image information by the camera information processing IC 805 on the main board 804, and then converted into a video signal by the video signal processing IC 806.

  The main board 804 includes a lens driver IC 810 that controls the lens, and transmits lens control information to the lens 102 and the lens 112.

  Information for controlling the lens 102 attached to the first mount 104 is transmitted from the first contact 811 provided on the first mount 104 to the first lens contact 812 provided on the first lens 102. The

  Information for controlling the second lens 112 is transmitted from the second contact 813 provided on the second mount 105 to the second lens contact 814 provided on the second lens.

  In addition, it is possible to determine whether the lens is attached to the mount depending on whether communication is possible between the contact of the main body and the lens contact.

  The drawer amount detecting means 511 and the rotation amount detecting means 512 provided on the drawer rotation hinge 501 are connected to the system microcomputer 815 and configured to display information such as the convergence angle on the display unit 107.

  The information converted into the two video signals is displayed on the display unit 107 as an image and recorded as a file of a predetermined format in the recording unit 814. The recording unit 814 includes a removable external memory card and a built-in non-removable built-in memory. Further, shooting, playback, various settings, and the like can be operated by the operation unit 108. Information converted into a video signal can be input / output from an external input / output terminal 816 as a video / audio signal or a file.

  A power input terminal 808 is connected to a power supply circuit 817 on the main board 804, and a detachable battery 109 is connected. The power supply circuit 807 supplies power to the entire digital video camera 101 through the main board 804.

  Next, the internal configuration of the digital video camera 101 will be described. FIG. 8 shows an overview of the internal structure of the digital video camera 101 in a top view.

  The first image sensor 801 provided on the first mount 104 is mounted on the first image sensor substrate 802 and is connected to the main substrate 804 by connection means 901 such as a thin coaxial wire. The main substrate 804 is disposed on the right side of the main body. The second image sensor 807 provided on the second mount 105 is mounted on the second image sensor substrate 808 and connected to the main substrate 804 by connection means 902 such as a fine coaxial wire inserted through the drawer rotation hinge. Has been. By disposing the main substrate 804 on the right side of the main body, the distance from the first image sensor substrate 802 to the main substrate 804 and the distance from the second image sensor substrate 808 to the main substrate 804 can be disposed approximately equal. It is. In many cases, the communication between the image pickup device substrates 802 and 808 and the main substrate 804 is performed at high speed. Further, when communicating with the main substrate 804 from the two image pickup devices 801 and 807 at the same time, the connection length is also required for signal synchronization Is as short as possible and the same length.

  FIG. 9 shows a shooting mode switching flow of the digital video camera 101. The digital video camera 101 has a 3D shooting mode and a 2D shooting mode as shooting modes, and can be switched by the operation unit 108. Further, as described above, whether the lens is attached to the mount can be determined based on whether or not communication between the contact of the main body and the lens contact is possible. As a flow, first, it is determined in S1002 whether there are two lenses. If S1002 is NO, it is determined in S1003 whether there is one lens. If S1003 is NO, the lens is not attached, so that photographing is not possible in S1004. When S1003 is YES, since one lens is attached, in S1007, the shooting mode is set to the 2D shooting mode. If YES in S1002, it is determined in S1006 whether the shooting mode is the 3D shooting mode. If S1006 is NO, the camera shoots in 2D shooting mode in S1007. If YES in step S1006, shooting is performed in 3D shooting mode in step S1008.

  Next, the convergence angle warning display formed by the two mounts will be described. FIG. 10 shows a convergence angle warning display flow of the digital video camera 101. As described above, the digital video camera 101 can adjust the convergence angle formed by the first mount 104 and the second mount 105. However, if the angle of convergence becomes wider than parallel, the image captured by the two lenses cannot be used as a 3D image. Therefore, the digital video camera 101 is configured to be able to display a convergence angle warning display according to the flow shown in FIG.

  In S1102, it is determined whether or not the camera is in the 3D shooting mode. If NO, the convergence angle warning is not displayed in S1103. If S1102 is YES, it is determined in S1104 whether the angle formed by the optical axes of the two mounts is narrower than parallel. When S1104 is YES, no convergence angle warning is displayed. When S1104 is NO, since the angle formed by the optical axes of the two mounts is wider than parallel, a convergence angle warning display is displayed on the display unit 107 in S1105. In this embodiment, the convergence angle warning is displayed on the display unit 107 in S1105, so that the video that cannot be used for 3D video is prevented from being wasted, but the object of the present invention is realized. The possible processing of S1105 is not limited to this. For example, 3D shooting may be prohibited in S1105.

  Next, the usage form of the digital video camera 101 with the lens attached will be described in the case where the lenses are attached to both mounts and the lens attached to only one of the mounts.

  First, a state in which the lenses 102 and 112 are attached to the first mount 104 and the second mount 105 is shown in FIG. As shown in the figure, when the lenses 102 and 112 are attached to the first mount 104 and the second mount 105, the handle member 106 is attached to the first accessory attachment member 701 for use. Further, when a tripod is used when the lenses 102 and 112 are attached to the first mount 104 and the second mount 105, the first tripod attachment portion 705 is used.

  FIG. 11 is an external perspective view showing a state where the lens 102 is attached only to the first mount 104. As shown in the figure, when the lens 102 is attached only to the first mount 104, the handle member 106 is attached to the second accessory attachment member 702 for use. Since there is the second accessory mounting member 702 on the optical axis of the first mount 104, it is easy to balance the grip.

  In addition, since the weight of the lens is halved compared to the case where two lenses are attached, the position of the center of gravity in the use state comes to the rear side of the product. For this reason, the second accessory mounting member 702 is positioned on the rear side of the product rather than the first accessory mounting member 701, so that a balance can be easily obtained during gripping.

  Further, when a tripod is used when the lens 102 is attached only to the first mount 104, the second tripod attachment portion 706 is used. As in the case of the accessory mounting member described above, since the second tripod mounting portion 706 is on the optical axis of the first mount 104, it is easy to achieve a balance when loading on the tripod. In addition, since the weight of the lens is halved compared to the case where two lenses are attached, the position of the center of gravity in the use state comes to the rear side of the product. For this reason, the second tripod screw portion 706 is positioned behind the product rather than the first tripod screw portion 705, so that it is easy to balance the load on the tripod.

101 digital video camera, 102 first lens, 103 main body,
104 first mount, 105 second mount, 106 handle member,
107 display unit, 108 operation unit, 109 battery, 110 grip unit,
111 operation member, 201 engaging claw, 202 mount contact, 203 insertion index,
204 Lock pin insertion recess, 205 abutting surface, 301 insertion hole, 302 engaging claw,
303 Contact, 304 Indicator, 305 Lock pin, 306 Lock pin operating member,
307 Mount surface, 401 Lock pin operating member, 501 Rotating drawer hinge, 502 Rotating shaft, 503 Fixed sheet metal, 504 Slot, 505 Caulking part,
506 moving sheet metal, 507 drawer motor, 508 rotary motor, 509 rack,
510 flexible substrate, 511 withdrawing amount detection means, 512 rotation amount detection means,
601 optical axis, 602 optical axis, 701 accessory mounting member,
702 Accessory mounting member, 703 Tripod mounting screw,
704 Tripod rotation stop hole, 705 Tripod attachment part, 801 First image sensor,
802 First image sensor substrate, 803 First AD conversion element, 804 Main substrate, 805 Camera information processing IC, 806 Video signal processing IC, 807 Second image sensor, 808 Second image sensor substrate, 809 Second AD converter element,
810 lens driver IC, 811 first contact, 812 first lens contact,
813 2nd contact, 814 2nd lens contact, 815 system microcomputer,
816 external input / output terminal, 817 power supply circuit, 901 connection means

Claims (2)

In an imaging apparatus including a first lens detachable portion and a second lens detachable portion that are interchangeable lenses,
When the two lens attaching / detaching portions are arranged horizontally,
The imaging apparatus has a plurality of accessory attachment portions, and at least one of the plurality of accessory attachment portions is located at an equal distance from the optical axis of the two lens attachment / detachment portions,
At least one of the plurality of accessory attaching portions is on an optical axis extension line of the lens attaching / detaching portion,
The accessory mounting portion located at an equal distance from the optical axis of the two lens mounting / dismounting portions is closer to the lens mounting / dismounting portion in the optical axis direction than the accessory mounting portion on the optical axis extension line of the lens mounting / dismounting portion. The imaging apparatus comprising the imaging apparatus.   The imaging apparatus according to claim 1, wherein the accessory attachment portion is a tripod attachment portion or a gripping means attachment portion.

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