JP4217182B2 - Imaging device - Google Patents

Description

  The present invention relates to an imaging device that captures a stereoscopic image using two imaging units.

  In recent years, digital cameras have become popular. Such a digital camera includes a solid-state imaging device such as a CCD image sensor or a CMOS image sensor, and a subject image formed on the solid-state imaging device by an imaging lens is acquired as image data. This image data is stored in a recording medium such as a memory card.

  By the way, a binocular digital camera (3D camera) capable of shooting a stereoscopic image using two imaging units including the above-described imaging optical system and solid-state imaging device has been proposed (for example, Patent Literatures 1 to 3). This two-lens digital camera acquires a pair of image data with different viewpoints by simultaneously photographing the same subject with a pair of imaging units. Stereoscopic viewing is possible by displaying the pair of image data as a right-eye image and a left-eye image in stereo. In addition, the digital cameras described in Patent Documents 1 to 3 include an optical axis interval variable mechanism that changes the optical axis interval between the two imaging units, and a stereoscopic image can be effectively obtained even for a distant subject. I am doing so.

JP-A-11-355624 JP 2001-142166 A JP 2001-281754 A

  However, since the optical axis interval variable mechanism provided in the digital cameras described in Patent Documents 1 to 3 uses a slide method in which one imaging unit is moved horizontally while keeping two optical axes in parallel, The change amount of the optical axis interval matches the slide width of the imaging unit, and the optical axis interval cannot be changed effectively.

  The present invention has been made in consideration of the above-described circumstances, and an object thereof is to provide an imaging apparatus capable of effectively changing the optical axis interval between two imaging units.

  An imaging device of the present invention is an imaging device including first and second imaging units, a main body, and a first rotating unit that is rotatably connected to the main body and provided with the first imaging unit. And a second rotating unit rotatably connected to the main body and provided with the second imaging unit, and the first and second rotating units rotate with the first and second rotating units. 2. An imaging apparatus characterized in that the distance between the two optical axes of the two imaging units changes while being kept substantially parallel.

  Note that the rotation radius of the optical axis of the first imaging unit accompanying the rotation of the first rotation unit is different from the rotation radius of the optical axis of the second imaging unit accompanying the rotation of the second rotation unit. It is preferable.

  In addition, a stereoscopic image processing unit that synthesizes the first image data obtained from the first imaging unit and the second image data obtained from the second imaging unit, and converts them into stereoscopic image data that enables stereoscopic viewing. And a first attitude detecting means for detecting the attitude of the first rotating part, and a second attitude detecting means for detecting the attitude of the second rotating part, wherein the stereoscopic image processing means comprises the conversion process. In this case, it is preferable that the orientations of the first and second image data are corrected based on the postures of the first and second rotating parts detected by the first and second posture detecting means.

  In addition, the first imaging unit includes a first solid-state imaging device in which a plurality of light receiving elements are arranged, and the second imaging unit includes a second solid-state imaging device in which a plurality of light receiving elements are arranged. preferable.

  It is also preferable that the first solid-state imaging device and the second solid-state imaging device have different light receiving element sizes and arrangement pitches.

  It is also preferable that the first solid-state imaging device and the second solid-state imaging device have different light receiving element arrangement directions.

  A first optical low-pass filter that separates subject light incident on the first solid-state imaging device into ordinary light and abnormal light, and a second optical that separates subject light incident on the second solid-state imaging device into ordinary light and abnormal light. It is also preferable that the first optical low-pass filter and the second optical low-pass filter have different subject light separation directions.

  In the photographing apparatus of the present invention, the second imaging unit is provided in the rotating unit that is rotatably connected to the main body including the first imaging unit, and the first and second are accompanied by the rotation of the rotating unit. Since the distance between the two optical axes of the imaging unit is kept substantially parallel, the distance between the optical axes can be effectively changed.

  In addition, since the first image pickup unit and the second image pickup unit are provided in the first rotation unit and the second rotation unit that are rotatably connected to the main body, respectively, the optical axis interval can be changed more effectively. Can do. Furthermore, the settable distance between the optical axes increases because the rotation radius of the optical axis of the first imaging unit is different from the rotation radius of the optical axis of the second imaging unit.

  Further, by making the size and arrangement pitch of the light receiving elements different between the first solid-state imaging device provided in the first imaging unit and the second solid-state imaging device provided in the second imaging unit, high resolution and a wide dynamic range are achieved. Can be obtained.

  Further, by making the arrangement directions of the light receiving elements different between the first solid-state imaging device and the second solid-state imaging device, it is possible to obtain a stereoscopic image with an increased direction in which high resolution can be obtained.

  In addition, first and second optical low-pass filters that separate subject light incident on the first and second solid-state imaging devices are provided, and the subject light separation direction differs between the first optical low-pass filter and the second optical low-pass filter. By doing so, it is possible to obtain a stereoscopic image in which generation of false colors and moire is suppressed and high resolution is compatible.

  1A and 1B are external perspective views of a 3D camera 2 according to the first embodiment in which the present invention is implemented. The 3D camera 2 includes a camera body 3 and a rotation unit 5 that is rotatably connected to an end of the camera body 3 by a hinge unit 4. A first imaging unit 7 that exposes the first imaging lens 6 is provided on the front right side of the camera body 3. A second imaging unit 9 that exposes the second imaging lens 8 is provided on the front surface of the rotating unit 5 at a position away from the hinge unit 4. A strobe light emitting unit 10 that emits strobe light toward the subject is provided on the left side of the front surface of the camera body 3.

  A recess is formed on the upper surface of the camera body 3, and a display device 12 having a liquid crystal panel (LCD) 11 on the upper surface is accommodated in the recess. The LCD 11 is a 3D monitor of a parallax barrier type or a lenticular lens type, and is used as an electronic viewfinder at the time of image shooting, and performs stereoscopic display of image data obtained by shooting at the time of image reproduction. The display device 12 is configured to be rotatable so as to change the angle of the LCD 11 around a hinge portion (not shown) formed at one end. A release button 13 used for a shutter release operation is provided on the upper surface of the camera body 3, and a cross button used for switching between a power button, a zoom operation and a playback frame is omitted on the rear surface although illustration is omitted. An operation unit 14 (see FIG. 2) including a key or the like is provided.

  The camera body 3 is formed with a notch 3a in which a lower portion of the left front corner is notched. The rotating part 5 has a shape that fits substantially in the notch 3a. As shown in FIG. 1A, the 3D camera 2 has a substantially rectangular parallelepiped shape in a state in which the rotating portion 5 is fitted and accommodated in the notch 3a.

  The hinge portion 4 includes an engaging portion 4a formed at an end portion of the notch portion 3a, an engaged portion 4b formed at an end portion of the rotating portion 5, and a shaft member that rotatably connects them. 4c. The hinge portion 4 has an angle range of 0 ° to 180 ° clockwise from a position where the rotating portion 5 is accommodated in the notch portion 3a of the camera body 3 around a virtual rotation shaft 4d passing through the shaft member 4c. Can be rotated freely.

  Although not shown, the hinge portion 4 is provided with a click mechanism for holding the rotating portion 5 in a predetermined posture with respect to the camera body 3. By this click mechanism, the rotating part 5 is rotated 180 ° from the initial position as shown in FIG. 1B and the “initial posture” housed in the notch 3a as shown in FIG. It is held in two postures, “inverted posture”. The user can release the holding state in the initial posture or the inverted posture by applying a force of a predetermined value or more in the turning direction of the turning unit 5 with a hand or the like. In addition, the attitude | position in which the rotation part 5 is hold | maintained is not restricted to the said 2 attitude | position, You may change suitably.

The optical axis 6a of the first imaging lens 6 provided in the first imaging unit 7 and the optical axis 8a of the second imaging lens 8 provided in the second imaging unit 9 are substantially parallel and substantially parallel to the rotation axis 4d. The distance between the optical axis 6a and the rotating shaft 4d is d ₁ , and the distance between the optical axis 8a and the rotating shaft 4d is d ₂ . In the initial posture of FIG. 1A and the inverted posture of FIG. 1B in which the rotating unit 5 is rotated 180 °, the optical axis 6a, the optical axis 8a, and the rotating shaft 4d are on a virtual plane. Located in. In the initial posture of FIG. 1A, the distance between the optical axis 6a and the optical axis 8a is “d ₁ -d ₂ ”, and in the inverted posture of FIG. 1B, the distance between the optical axis 6a and the optical axis 8a is “ d ₁ + d ₂ ″.

  Further, a posture detection switch (posture detection means) 15 is provided at the upper part of the inner wall of the camera body 3 where the notch 3a is formed. The posture detection switch 15 is configured to be turned on / off depending on the presence / absence of a pressing force. When the posture detection switch 15 is pressed by the rotating unit 5 (the state shown in FIG. 1A), the posture detection switch 15 is turned on. When the rotating unit 5 is rotated, the pressure is released and it is turned off. The on / off signal of the attitude detection switch 15 is supplied to a CPU 40 (see FIG. 2) built in the camera body 3 and used as an attitude detection signal of the rotating unit 5.

  FIG. 2 is a block diagram showing an electrical configuration of the 3D camera 2. The first imaging unit 7 includes a first imaging lens 6 to which a lens motor 20 is connected, a diaphragm 22 to which an iris motor 21 is connected, a motor driver 23, a first CCD 24 as a solid-state imaging device, a timing generator (TG) 25, It comprises a correlated double sampling circuit (CDS) 26, an amplifier (AMP) 27, and an A / D converter (A / D) 28.

  The lens motor 20 moves the zoom lens of the first imaging lens 6 to the wide side or the tele side in conjunction with the zoom operation of the operation unit. Further, the focus lens of the first imaging lens 6 is moved in accordance with the subject distance and zoom lens magnification, and the focus adjustment is performed so that the photographing conditions are optimized. The iris motor 21 operates the diaphragm 22 to adjust exposure.

  Behind the first imaging lens 6 is disposed a first CCD 24 that receives subject light transmitted through the first imaging lens 6. A TG 25 controlled by the CPU 40 is connected to the first CCD 24, and the shutter speed of the electronic shutter is determined by a timing signal (clock pulse) input from the TG 25.

  The imaging signal output from the first CCD 24 is input to a correlated double sampling circuit (CDS) 26, and is output as R, G, B image data that accurately corresponds to the accumulated charge amount of each light receiving element of the first CCD 24. . The image data output from the CDS 26 is amplified by an amplifier (AMP) 27 and converted into digital image data by an A / D 28. The digitized image data is output from the A / D 28 to the image signal processing circuit 41 as left-eye image data (first image data).

  The second imaging unit 9 has the same configuration as that of the first imaging unit 7, and includes a first imaging lens 8 to which a lens motor 30 is connected, an aperture 32 to which an iris motor 31 is connected, a motor driver 33, and a solid-state imaging device. The second CCD 34, a timing generator (TG) 35, a correlated double sampling circuit (CDS) 36, an amplifier (AMP) 37, and an A / D converter (A / D) 38. The A / D 38 outputs the digitized right eye image data (second image data) to the image signal processing circuit 41. The first CCD 24 and the second CCD 34 are not limited to CCD image sensors, and may be MOS image sensors.

  The image signal processing circuit 41 performs various image processing such as gradation conversion, white balance correction, and γ correction processing on the image data for the left eye and the image data for the right eye. Each image data subjected to various image processing by the image signal processing circuit 41 is temporarily stored in an SDRAM 43 connected via a data bus 42.

  The CPU 40 is connected to the attitude detection switch 15 described above, and receives an attitude detection signal indicating the attitude of the rotating unit 5 from the attitude detection switch 15. The CPU 40 controls the stereoscopic image processing circuit (stereoscopic image processing means) 45 based on the posture detection signal. When the posture detection signal is an ON signal and represents the initial posture in FIG. 1A, the stereoscopic image processing circuit 45 has the same orientation of the left-eye image data and the right-eye image data. Then, they are synthesized as they are to generate stereoscopic image data. On the other hand, when the posture detection signal is an off signal and represents the reverse posture of FIG. 1B, the right-eye image data obtained by the second imaging unit 9 is rotated by 180 ° as shown in FIG. Then, the process of correcting the orientation is performed, and then the left-eye image data and the right-eye image data are synthesized to generate stereoscopic image data. The stereoscopic image data obtained in this way is output from the stereoscopic image processing circuit 45 and stored in the SDRAM 43.

  When the LCD 11 is used as an electronic viewfinder, the stereoscopic image data stored in the SDRAM 43 is converted into a composite signal by the LCD driver 44 and displayed as a through image on the LCD 11.

  A compression / decompression processing circuit 46 and a media controller 47 are connected to the CPU 40 via a data bus 42. The CPU 40 controls the compression / decompression processing circuit 46 to compress the stereoscopic image data stored in the SDRAM 43 in a compression format such as the JPEG method. Thereafter, the CPU 40 controls the media controller 47 to record the compressed stereoscopic image data on a recording medium 48 such as a memory card. When reproducing the stereoscopic image data recorded on the recording medium 48, the CPU 40 controls the media controller 47 to read the stereoscopic image data from the recording medium 48, and further controls the compression / decompression processing circuit 46 to compress it. The decompressed image data is expanded. The CPU 40 controls the LCD driver 44 to display this image data on the LCD 11.

  Although the detailed structure of the LCD 11 is not illustrated, a parallax barrier display layer is provided on the surface of the LCD 11, and the LCD 11 includes a light transmission portion and a parallax barrier display layer when performing stereoscopic display of stereoscopic image data. By generating a parallax barrier consisting of a pattern in which light shielding portions are alternately arranged at a predetermined pitch, strip-shaped image fragments showing left and right images are alternately arranged and displayed on the lower image display surface. Enable stereoscopic viewing.

  The CPU 40 is connected to each unit via the bus 42 and comprehensively controls the overall operation of the 3D camera 2. In addition to the release button 13, the operation unit 14, and the attitude detection switch 15 described above, an EEPROM 49 is connected to the CPU 40. The EEPROM 49 stores various control programs and setting information. The CPU 40 reads these pieces of information from the EEPROM 49 to the SDRAM 43, which is a working memory, and executes various processes.

  Further, the bus 42 detects whether the exposure amounts of the first imaging unit 7 and the second imaging unit 9, that is, the shutter speed and the aperture value are appropriate for shooting, and whether the white balance is appropriate for shooting. AE / AWB detection circuit 50 to detect, AF detection circuit 51 to detect whether or not the focus adjustment of the first imaging unit 7 and the second imaging unit 9 is appropriate for shooting, and a strobe control circuit to control the operation of the strobe light emitting unit 11 52 and the like are also connected.

  The release button 13 is a two-stage push switch. When shooting, if the release button 13 is lightly pressed (half-pressed) after framing by the LCD 11, various types such as automatic exposure adjustment (AE) and automatic focus adjustment (AF) of the first imaging unit 7 and the second imaging unit 9. A shooting preparation process is performed. In this state, when the release button 13 is pressed once more (fully pressed), the imaging signal for one screen subjected to the imaging preparation process is converted into the image data for the left eye and the image data for the right eye. Image processing and compression processing are performed by the image signal processing circuit 41, the stereoscopic image processing circuit 45, and the compression / decompression processing circuit 46, and stereoscopic image data is recorded on the recording medium 48.

  Since the 3D camera 2 is configured as described above, the interval between the optical axis 6a and the optical axis 8a can be made larger than the horizontal width of the camera body 3, and this optical axis interval can be set according to the shooting conditions of the subject. It can be changed greatly and effectively to widen the shooting area.

  Next, FIGS. 4A and 4B are external perspective views of the 3D camera 60 of the second embodiment in which the present invention is implemented. The 3D camera 60 includes a camera body 61, a first rotation part 63 that is rotatably connected to the left end part of the camera body 61 by a first hinge part 62, and a right end part of the camera body 61 by a second hinge part 64. And a second rotating portion 65 that is rotatably connected to the second rotating portion 65. The camera body 61 is formed with a notch 61a in which the lower front portion is notched. The 1st rotation part 63 and the 2nd rotation part 65 become a shape which substantially fits in this notch part 61a. As shown in FIG. 4A, the 3D camera 60 has a substantially rectangular parallelepiped shape in a state where the first rotating portion 63 and the second rotating portion 65 are fitted and accommodated in the notch portion 61a.

  A first imaging unit 7 that exposes the first imaging lens 6 is provided on the front surface of the first rotation unit 63 at a position away from the first hinge unit 62. A second imaging unit 9 that exposes the second imaging lens 8 is provided on the front surface of the second rotating unit 65 at a position away from the second hinge unit 64. Since the first imaging unit 7 and the second imaging unit 9 are the same as those in the first embodiment, the same reference numerals are given. Further, the camera body 61 is provided with a strobe light emitting unit 10, a display device 12 provided with an LCD 11, a release button 13, and an operation unit 14, which are also the same as those in the first embodiment, and have the same reference numerals. The details are as described above.

  The 1st hinge part 62 and the 2nd hinge part 64 are comprised similarly to the hinge part 4 of the said 1st Embodiment. The first hinge part 62 is centered on a virtual rotation shaft 62b that passes through the shaft member 62a, and the first rotation part 63 is counterclockwise from the position accommodated in the notch part 61a of the camera body 61 by 0 ° to 0 °. It can be freely rotated in an angle range of 180 °. Further, the second hinge part 64 is rotated clockwise by 0 ° from the position where the second rotating part 65 is accommodated in the notch part 61a of the camera body 61 around the virtual rotation shaft 64b passing through the shaft member 64a. It can be freely rotated in an angle range of ˜180 °.

  The first hinge part 62 and the second hinge part 64 are provided with a click mechanism (not shown), and the first rotating part 63 and the second rotating part 65 are respectively cut as shown in FIG. It is held in two postures: an “initial posture” housed in the notch 61a and a “reverse posture” rotated 180 ° from the initial position as shown in FIG. 4B. The user can release the holding state in the initial posture or the reversed posture by applying a force of a predetermined value or more to the first turning portion 63 or the second turning portion 65 with a hand or the like. it can. Note that the postures in which the first rotating portion 63 and the second rotating portion 65 are held are not limited to the above two postures, and may be changed as appropriate.

The optical axis 6a of the first imaging lens 6, the optical axis 8a of the second imaging lens 8, the rotating shaft 62b, and the rotating shaft 64b are kept substantially parallel, and the distance between the optical axis 6a and the rotating shaft 62b is d. _3, the distance between the optical axis 8a and the rotary shaft 64b is d _4, the distance between the rotary shaft 62b and the rotary shaft 64b has a d _5. In the initial posture of FIG. 4A and the inverted posture of FIG. 4B in which the first rotating portion 63 and the second rotating portion 65 are rotated by 180 °, the optical axis 6a, the optical axis 8a, The rotating shaft 62b and the rotating shaft 64b are located on a virtual plane. In the initial posture of FIG. 4A, the distance between the optical axis 6a and the optical axis 8a is “d ₅ -d ₃ -d ₄ ”, and in the inverted posture of FIG. 4B, the distance between the optical axis 6a and the optical axis 8a. The interval is “d ₅ + d ₃ + d ₄ ”.

As shown in FIGS. 5A and 5B, one of the first rotation unit 63 and the second rotation unit 65 can be in the initial posture, and the other can be in the reverse posture. FIG. 5A shows a case where the first rotation unit 63 is in the initial posture and the second rotation unit 65 is in the inverted posture. At this time, the distance between the optical axis 6a and the optical axis 8a is “d ₅ − d ₃ + d ₄ ″. FIG. 5B shows a case where the first rotation unit 63 is in the inverted posture and the second rotation unit 65 is in the initial posture. At this time, the distance between the optical axis 6a and the optical axis 8a is “d ₅ + d. ₃ −d ₄ ″. Thus, the rotation of the optical axis 6a radius d ₃ and turning radius d ₄ of the optical axis 8a With different lengths, the distance between the optical axis 6a and the optical axis 8a, the first rotating portion 63, the second rotation The length can be set in four ways according to the posture of the portion 65.

  A first attitude detection switch 66 and a second attitude detection switch 67 are provided on the inner wall of the camera body 61 where the notch 61a is formed. The 1st attitude | position detection switch 66 and the 2nd attitude | position detection switch 67 are comprised so that it may turn on / off by the presence or absence of pressing force. When the first posture detection switch 66 is pressed by the first rotation unit 63 (the state shown in FIG. 4A or FIG. 5A), the first rotation unit 63 is turned on. Then, the pressure is released and it is turned off. When the second posture detection switch 67 is pressed by the second rotation unit 65 (the state shown in FIG. 4A or FIG. 5B), the second rotation detection switch 67 is turned on, and the first rotation unit 63 is rotated from this state. Then, the pressure is released and it is turned off. The on / off signals of the first attitude detection switch 66 and the second attitude detection switch 67 are supplied to the CPU 40 (see FIG. 6) built in the camera body 61, and the first rotation unit 63 and the second rotation unit 65. Is used as a posture detection signal.

  FIG. 6 is a block diagram showing an electrical configuration of the 3D camera 60. The electrical configuration of the 3D camera 60 is obtained by replacing the posture detection switch 15 in the electrical configuration of the 3D camera 2 of the first embodiment shown in FIG. 2 with a first posture detection switch 66 and a second posture detection switch 67. Equivalent to. Other components are the same as those in the first embodiment, and thus are denoted by the same reference numerals.

  A first posture detection switch 66 and a second posture detection switch 67 are connected to the CPU 40, and posture detection signals representing the postures of the first rotation unit 63 and the second rotation unit 65 are input. The CPU 40 controls the stereoscopic image processing circuit 45 based on the posture detection signal. When the posture detection signal of the first posture detection switch 66 is an off signal, the stereoscopic image processing circuit 45 performs a process of rotating the left-eye image data obtained by the first imaging unit 7 by 180 degrees, When the posture detection signal of the posture detection switch 67 is an off signal, the right eye image data obtained by the second imaging unit 9 is rotated by 180 ° to perform the left eye image data and the right eye image. After combining the direction with the data, the composition processing to the stereoscopic image data is performed. Since other configurations and operations are the same as those in the first embodiment, description thereof will be omitted.

  Since the 3D camera 60 is configured as described above, the distance between the optical axis 6a and the optical axis 8a can be made larger than the horizontal width of the camera main body 61, and the subject distance can be changed from the above four lengths. It can be set to an appropriate length according to the requirement.

  In the first and second embodiments, the first CCD 24 included in the first imaging unit 7 and the second CDD 34 included in the second imaging unit 9 are configured to have the same size, arrangement pitch, and arrangement direction of the light receiving elements. An apparatus may be used, but the present invention is not limited to this, and the size and density of the light receiving element may be changed between the first CCD 24 and the second CDD 34. For example, as shown in FIG. 7, when the light receiving elements 24a of the first CCD 24 are arranged with a small size and a small pitch, high-resolution left-eye image data is obtained, and the light receiving elements 34a of the second CDD 34 are reduced in size. If it is large and arranged at a large pitch, right-eye image data with a wide dynamic range can be obtained. By synthesizing these image data, an image with a high resolution and a wide dynamic range is stereoscopically viewed.

  In the first CCD 24 and the second CDD 34, the light receiving elements may have the same size, and the arrangement direction of the light receiving elements may be changed. For example, as shown in FIG. 8, the light receiving elements 24a of the first CCD 24 are arranged in a square array so that the arrangement direction is along the horizontal scanning direction x and the vertical scanning direction y, and the light receiving elements 34a of the second CDD 34 are arranged in the square arrangement. If the arrangement is rotated by 45 ° with respect to the spatial frequency characteristics of the first CCD 24 and the second CDD 34, the direction in which the resolving power is high differs by 45 °. By combining these image data, spatial frequency characteristics are combined as shown in FIG. 9, and an image with high resolving power is stereoscopically viewed in the horizontal, vertical, and diagonal directions.

  In the first and second embodiments, as shown in FIG. 10, in order to suppress the generation of false colors (colors that are not originally present) and moire due to light having a high spatial frequency entering a single light receiving element. It is also preferable to provide a first optical low-pass filter (first OLPF) 70 and a second optical low-pass filter (second OLPF) 71 that remove high-frequency components of the subject light immediately before the first CCD 24 and the second CDD 34. The first and second OLPFs 70 and 71 are made of quartz crystal and separate subject light into ordinary light 70a and 71a and extraordinary light 70b and 71b, respectively, due to their birefringent nature. The resolution decreases along the separation direction, but the generation of false colors and moire is suppressed. On the other hand, in the direction perpendicular to the separation direction, the resolution is high, but false colors and moire are likely to occur.

  In FIG. 11A, the light receiving elements 24a of the first CCD 24 and the light receiving elements 34a of the second CDD 34 are in a square array along the horizontal scanning direction x and the vertical scanning direction y. In this case, the separation direction of the normal light 70a and the extraordinary light 70b by the first OLPF 70 is along the horizontal scanning direction x, and the separation direction of the ordinary OL 71a and the extraordinary light 71b by the second OLPF 71 is along the vertical scanning direction y. By synthesizing these image data, the generation of false colors and moire in each of the orthogonal horizontal and vertical directions is suppressed, and an image with high resolution is stereoscopically viewed.

  In FIG. 11B, the light receiving element 24a of the first CCD 24 and the light receiving element 34a of the second CDD 34 are arranged so that the arrangement direction forms 45 ° with respect to the horizontal scanning direction x and the vertical scanning direction y. Yes. In this case, in this case, the separation direction of the ordinary light 70a and the extraordinary light 70b by the first OLPF 70 is an oblique right direction so as to form an angle of 45 ° with respect to the horizontal scanning direction x, and the ordinary light 71a and the extraordinary light 71b by the second OLPF 71 By synthesizing these image data by setting the separation direction to the left oblique direction so as to form an angle of 45 ° with respect to the vertical scanning direction y, it is false in each of the right oblique direction and the left oblique direction. An image with suppressed color and moire and high resolution is stereoscopically viewed.

  In the first and second embodiments, the 3D camera that captures a still image has been described. However, the present invention is not limited to this, and the present invention can also be applied to a 3D camera that can capture a moving image.

It is a perspective view which shows the 3D camera of 1st Embodiment, Comprising: (A) is a figure with a rotation part in an initial position, (B) is a figure with a rotation part in a reverse attitude. It is a block diagram which shows the electrical structure of the 3D camera of 1st Embodiment. It is a figure which shows the synthetic | combination process of the image data for left eyes and the image data for right eyes performed based on an attitude | position detection signal. It is a perspective view which shows the 3D camera of 2nd Embodiment, (A) is a figure with the 1st and 2nd rotation part in an initial position, (B) is a 1st and 2nd rotation part in a reverse posture. FIG. FIG. 6A is a diagram in which the first rotating unit is in an initial posture and the second rotating unit is in an inverted posture; FIG. 5B is a diagram in which the first rotating unit is in an inverted posture and the second rotating unit is in an initial posture; FIG. It is a block diagram which shows the electrical structure of the 3D camera of 2nd Embodiment. It is a figure which shows an example which changed the size and arrangement pitch of the light receiving element by 1st CCD and 2nd CCD. It is a figure which shows an example which changed the arrangement direction of the light receiving element by 1st CCD and 2nd CCD. It is a figure which shows a mode that the spatial frequency of 1st and 2nd CCD of FIG. 8 is synthesize | combined. It is a figure which shows a mode that the optical low-pass filter has been arrange | positioned just before 1st CCD and 2nd CCD. It is an example of setting the separation direction of the optical low-pass filter into normal light and abnormal light with respect to the arrangement direction of the light receiving elements of the first and second CCDs.

Explanation of symbols

2 3D camera 3 Camera body 4 Hinge unit 4d Rotating shaft 5 Rotating unit 6 First imaging lens 6a Optical axis 7 First imaging unit 8 Second imaging lens 8a Optical axis 9 Second imaging unit 11 Liquid crystal panel 15 Attitude detection switch 24 1st CCD
34 Second CCD
40 CPU
45 3D image processing circuit 60 3D camera 61 Camera body 62 First hinge part 62b Rotating shaft 63 First rotating part 64 Second hinge part 64b Rotating shaft 65 Second rotating part 66 First attitude detection switch 67 Second attitude detection Switch 70 First optical low-pass filter 71 Second optical low-pass filter

Claims (7)

In the imaging device including the first and second imaging units,
A main body, a first rotating portion that is rotatably connected to the main body and provided with the first imaging unit, and a second imaging unit that is rotatably connected to the main body and provided with the second imaging unit A second rotation unit, and the two optical axes of the first and second imaging units are maintained substantially parallel to each other while the first and second rotation units rotate. An imaging device characterized by changing. The rotation radius of the optical axis of the first imaging unit associated with the rotation of the first rotation unit is different from the rotation radius of the optical axis of the second imaging unit associated with the rotation of the second rotation unit. The imaging device according to claim 1, wherein: Stereoscopic image processing means for converting the first image data obtained from the first imaging unit and the second image data obtained from the second imaging unit into stereoscopic image data enabling stereoscopic viewing; First posture detecting means for detecting the posture of the first rotating portion; and second posture detecting means for detecting the posture of the second rotating portion;
The stereoscopic image processing means is configured to determine the orientations of the first and second image data based on the attitudes of the first and second rotating parts detected by the first and second attitude detection means during the conversion process. photographing apparatus according to claim 1, wherein modifying the. The first imaging unit includes a first solid-state imaging device in which a plurality of light-receiving elements are arranged, and the second imaging unit includes a second solid-state imaging device in which a plurality of light-receiving elements are arranged. The photographing apparatus according to any one of claims 1 to 3 . The imaging device according to claim 4, wherein the first solid-state imaging device and the second solid-state imaging device are different in size and arrangement pitch of light receiving elements. The imaging apparatus according to claim 4, wherein the first solid-state imaging device and the second solid-state imaging device have different light receiving element arrangement directions. A first optical low-pass filter that separates subject light incident on the first solid-state imaging device into ordinary light and abnormal light, and a second optical that separates subject light incident on the second solid-state imaging device into ordinary light and abnormal light. With a low-pass filter,
5. The photographing apparatus according to claim 4, wherein the first optical low-pass filter and the second optical low-pass filter have different subject light separation directions.

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