WO2012169363A1 - Procédé de production de caméra stéréo et caméra stéréo - Google Patents

Procédé de production de caméra stéréo et caméra stéréo Download PDF

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Publication number
WO2012169363A1
WO2012169363A1 PCT/JP2012/063294 JP2012063294W WO2012169363A1 WO 2012169363 A1 WO2012169363 A1 WO 2012169363A1 JP 2012063294 W JP2012063294 W JP 2012063294W WO 2012169363 A1 WO2012169363 A1 WO 2012169363A1
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WO
WIPO (PCT)
Prior art keywords
camera
stereo camera
stereo
imaging
manufacturing
Prior art date
Application number
PCT/JP2012/063294
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English (en)
Japanese (ja)
Inventor
水上雅文
Original Assignee
コニカミノルタアドバンストレイヤー株式会社
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Publication date
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Publication of WO2012169363A1 publication Critical patent/WO2012169363A1/fr

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B43/00—Testing correct operation of photographic apparatus or parts thereof
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B35/00—Stereoscopic photography
    • G03B35/08—Stereoscopic photography by simultaneous recording
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/204—Image signal generators using stereoscopic image cameras
    • H04N13/239—Image signal generators using stereoscopic image cameras using two 2D image sensors having a relative position equal to or related to the interocular distance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/296—Synchronisation thereof; Control thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2213/00—Details of stereoscopic systems
    • H04N2213/001—Constructional or mechanical details

Definitions

  • the present invention relates to a stereo camera manufacturing method and stereo camera for obtaining stereoscopic image data.
  • a so-called stereo camera that can capture a stereoscopic image using two imaging units.
  • the same subject can be simultaneously imaged by each imaging unit, and two types of images, a right-eye image and a left-eye image, can be acquired.
  • the acquired two types of images are displayed alternately on the image display device, and glasses that are transparent and non-transparent in synchronization with the display image are put in front of the right eye and the left eye so that stereoscopic viewing is possible.
  • Some display devices are provided with a lenticular lens or the like on the front surface to enable stereoscopic viewing with the naked eye.
  • the two acquired images should have parallax by arranging the optical axes of the two cameras in parallel and spaced apart at a predetermined interval. Is required.
  • Patent Document 1 a technique is known in which a circuit board including a lens and an image pickup element is assembled from the front and back to an integral support member, and the position of the circuit board is moved and rotated in the plane. .
  • Patent Document 2 two circular openings are formed in one plate, a camera module is inserted into each opening, and a flat portion formed in the camera module is brought into contact with the plate surface. Therefore, a technique for making the optical axes of two camera modules parallel is also known.
  • Patent Document 2 is effective for keeping the optical axis parallel, but describes how to deal with the shift in the rotation direction of the two images obtained by the two camera modules. It has not been.
  • the present invention makes the adjustment of the two camera modules extremely simple, can reduce the possibility of deviation of the adjustment position due to vibration, impact, aging, etc., and is stable over a long period of time. It is an object of the present invention to provide a method of manufacturing a stereo camera capable of exhibiting performance and a stereo camera manufactured thereby.
  • the method for manufacturing a stereo camera according to claim 1 includes a cylindrical lens barrel portion that includes a photographing optical system and an image sensor in order to acquire two images having parallax for stereoscopic viewing.
  • a method of manufacturing a stereo camera in which two camera modules are arranged on a support member, The optical axis of the imaging optical system and the imaging surface of the imaging element are orthogonal to each other, and the optical axis of the imaging optical system is positioned on the middle line of two long sides of the outer edge of the effective pixel area of the imaging surface.
  • a camera module manufacturing process for manufacturing a camera module An assembling step of inserting and incorporating the lens barrel portions of the two camera modules into two circular openings formed at predetermined intervals in the support member; An adjustment process to be performed after the assembly process, The adjusting step is performed only by rotating at least one of the two camera modules around the optical axis within the circular opening.
  • the present inventor mainly aims to give the observer a perspective and stereoscopic effect, so that two images having parallax for stereoscopic viewing are displayed on, for example, a horizontally long display screen.
  • the shooting range in the short side direction (up and down direction) of the display screen is substantially the same, and the long side direction ( We focused on the fact that the amount of deviation between the two images in the left-right direction does not require much accuracy for the purpose of obtaining stereoscopic vision.
  • the adjustment step by rotating at least one of the camera modules around the optical axis within the circular opening, the shooting range in the short side direction can be substantially matched, and the parallax for stereoscopic viewing only in the long side direction It was found that can be given.
  • 3D image shooting equipment it is used in various shooting sites, so it is preferable to have resistance to vibration and impact as much as possible and not change with time. If the lens barrel part is inserted and bonded, the structure can be maintained for a long period of time because it has a resistance to vibration and impact while achieving a simple structure, and can exhibit stable performance. .
  • the “circular opening” is sufficient if at least a part of the opening is circular, and may be any structure that can rotate the camera module around the optical axis of the imaging optical system. “To make the optical axis of the imaging optical system orthogonal to the imaging surface of the imaging element” means to make them orthogonal with an error of ⁇ 0.5 degrees or less, and to “two outer edges of the effective pixel area of the imaging surface” “Locating the optical axis of the imaging optical system on the middle line of the long side” means matching within an error of ⁇ 40 ⁇ m.
  • the method for manufacturing a stereo camera according to claim 2 is the invention according to claim 1, wherein the adjustment step is performed by photographing the same mark on the surface to be photographed by the two camera modules arranged on the left and right. While displaying the mark images obtained by the photographing of the two camera modules on the observation screen, respectively, at least one of the camera modules is set so that the vertical positions of the mark images displayed on the observation screen are equal. Rotating around the optical axis within a circular opening.
  • the image shift obtained by the two camera modules can be made to exist only in the long-side direction (left-right direction) of the display screen by simple adjustment, so that man-hours are not required and costs are reduced.
  • the “mark” includes, but is not limited to, a dot or a crosshair, and may be any mark that can be recognized as a target for adjustment.
  • the stereo camera according to claim 3 is manufactured by the stereo camera manufacturing method according to claim 1 or 2.
  • the stereo camera according to claim 4 is the invention according to claim 3, wherein the support member is also used as a component constituting the stereo camera.
  • the support member is also used as a component constituting the stereo camera.
  • the weight can be reduced and the number of parts can be reduced.
  • the adjustment of the two camera modules can be made extremely simple, the possibility that the adjustment position shifts due to vibration, impact, change with time, etc. can be reduced, and stable performance over a long period of time. It is possible to provide a method of manufacturing a stereo camera that can be exhibited and a stereo camera manufactured thereby.
  • FIG. 1 is a block diagram of a stereo camera 10.
  • FIG. FIG. 4 is a flowchart showing a manufacturing process of the stereo camera 10. It is an assembly drawing of a camera module. It is principal part sectional drawing of a supporting member and a camera module which shows the assembly process to the supporting member 16 of the camera modules 20L and 20R, (a) is before incorporating a camera module in a supporting member, (b) is after incorporating. Indicates.
  • FIG. 6 is a flowchart showing an adjustment process of the stereo camera 10. It is the schematic of the adjustment apparatus used for an adjustment process. It is a figure explaining adjustment process (a)-(g).
  • A) is a perspective view which shows the stereo camera concerning the modification manufactured by the manufacturing method of this Embodiment, (b) is the partial cross section figure.
  • FIG. 1A and 1B are perspective views of a stereo camera according to the present embodiment.
  • FIG. 1A is a rear perspective view
  • FIG. 1B is a front perspective view
  • FIG. 1C is a perspective view. Only the module is shown, and the internal circuit and the like are not shown.
  • the stereo camera 10 has two openings 11L and 11R for taking in subject light on the front side of the housing 11 as shown in FIG.
  • the stereo camera 10 has a display unit 12 such as a display on the back side of the casing 111, and function buttons 13 and 14 are provided on the side of the display unit 12. Further, a release button 15 is provided on the upper portion of the housing 11.
  • the stereo camera 10 is provided with two camera modules 20L and 20R supported by the support member 16 so as to face the openings 11L and 11R, respectively.
  • FIG. 2 is a block diagram showing the relationship between the main parts of the stereo camera 10.
  • the control unit 17 supplied with power from the power supply unit 19 inputs image signals from the left-eye camera module 20 ⁇ / b> L and the right-eye camera module 20 ⁇ / b> R in response to the release signal from the release button 15.
  • Image data obtained by performing various image processing is input to the display unit 12, and a 3D image is displayed.
  • image data is stored in a storage unit 18 such as a memory.
  • a stereo shooting / non-stereo shooting switching switch and a moving image / still image switching switch are provided.
  • stereo shooting is selected with the stereo shooting / non-stereo shooting switch
  • shooting and recording are performed using both the camera modules 20L and 20R
  • Shooting / recording is performed by only one of the camera modules 20L and 20R.
  • FIG. 3 is a flowchart showing the manufacturing process of the stereo camera 10 according to the present embodiment.
  • FIG. 4 is an assembly diagram of the camera module.
  • step S101 of FIG. 3 a substrate 21 on which a circuit (not shown) is printed is set, and in step S102, a sensor package SP including an image sensor (sensor) 22 is mounted on the substrate 21.
  • step S103 a lens 23 as a photographing optical system is inserted and bonded to the hollow lens barrel portion 24 to form a lens unit LU, and then the center of the image sensor 22 and the optical axis of the lens 23 coincide with each other.
  • the lens unit LU is attached to and adhered to the sensor package SP so that the imaging surface of the imaging element 22 is orthogonal to the optical axis of the lens 23. It is assumed that the optical axis of the lens 23 included in the lens barrel portion 24 is parallel to the cylindrical outer peripheral surface 24 a of the lens barrel portion 24 and is orthogonal to the lower end of the lens barrel portion 24.
  • the imaging device 22 is photographed with a camera from the imaging surface side, the center of the effective pixel region is obtained from its outer shape, the lens 23 is photographed with the camera from the image surface side, and the center of the lens 23 is obtained from its outer diameter,
  • the center of the image sensor 22 and the optical axis of the lens 23 are accurately matched by moving and superimposing the center of the lens 23 and the center of the image pickup surface (effective pixel area) of the image sensor 22 so as to substantially match.
  • the lower end of the lens barrel portion 24 is placed on the upper surface of the sensor package SP, so that the imaging device The 22 imaging surfaces are perpendicular to the optical axis of the lens 23 with high accuracy.
  • the camera modules 20L and 20R are completed through the inspection process of step S104 in FIG. 3 (step S105).
  • the camera modules 20L and 20R are assembled to the support member 16 in step S106 (assembly process).
  • FIGS. 5 and 6 are diagrams showing an assembling process of the camera modules 20L and 20R into the support member 16.
  • FIG. FIG. 7 is a front view of the support member 16 in which the camera modules 20L and 20R are incorporated.
  • the support member 16 is, for example, a rectangular plate material, and circular openings 16L and 16R are formed at predetermined intervals as shown in FIGS. 5 (a) and 6 (a).
  • the camera modules 20L and 20R are inserted into the circular openings 16L and 16R from the same side, and the cylindrical outer peripheral surface 24a of the lens barrel portion 24 is fitted. I am letting.
  • the circular openings 16L and 16R and the cylindrical outer peripheral surface 24a in FIG. 7 are clearance fitting, they can be rotated relative to each other, and bonding is not performed at this point.
  • FIG. 8 is a flowchart showing the adjustment process of the stereo camera 10 and shows the contents of step S107.
  • FIG. 9 is a schematic diagram of an adjustment device used in the adjustment process, and
  • FIG. 10 is a diagram illustrating the adjustment process.
  • step S107a in FIG. 8 the support member 16 to which the camera modules 20L and 20R are attached is set in the adjusting device. More specifically, as shown in FIG. 9, the support member 16 is horizontally attached to the base BS, the optical axes of the camera modules 20L and 20R are directed to the screen SC, and the outputs of the camera modules 20L and 20R are further displayed on the display DP.
  • the wirings WL and WR are connected so that they can be output.
  • a black dot (mark) BP is formed at the center of the screen SC.
  • step S107b the black spot image BP photographed by the camera modules 20L and 20R is displayed on the observation screen of the display DP.
  • the horizontal positions of the camera modules 20L and 20R are shifted.
  • the black spots BP on the imaging surfaces of the camera modules 20L and 20R are assumed to be shifted from the center of the imaging surface in the x and y directions.
  • the horizontal base line (long side middle line) of the imaging surface is HL
  • the vertical base line (short side center line) is VL.
  • step S107c as shown in FIG. 10D, the camera module 20R is rotated, for example, counterclockwise within the circular opening 16R. Then, since the position of the center of the imaging surface does not change and the imaging surface is tilted, the horizontal base line HL is also tilted. Therefore, the black dot image BPR on the observation screen is relatively displaced as indicated by the arrow. (See the right figure in FIG. 10E).
  • step S107d as shown in FIG. 10D, the camera module 20L is rotated, for example, counterclockwise within the circular opening 16L. Then, since the position of the center of the imaging surface does not change and the imaging surface is tilted, the horizontal base line HL is also tilted. Therefore, the black dot image BPL on the observation screen is relatively displaced as indicated by the arrow. (Refer to the left figure of FIG. 10 (e)).
  • the imaging surface is inclined with respect to the horizontal.
  • the images themselves output from the camera modules 20L and 20R are as shown in FIG.
  • the black dot image BPL is horizontal on the observation screen as shown in FIG. Displayed in a state shifted only in the direction.
  • step S107e it is determined whether or not the positions of the two black dot images BPL and BPR have the same vertical distance with respect to the horizontal base line HL.
  • step S107b If not, the process returns to step S107b and the same steps are repeated.
  • the lens barrel 24 of the camera modules 20L and 20R is bonded to the support member 16 in step S107f. The adjustment process is completed.
  • step S108 of FIG. 3 the performance of the stereo camera is checked. If the target optical performance is satisfied, the stereo camera is completed.
  • the deviation between the two black dot images BPL and BPR is present only in the long side direction (or left and right direction) of the observation screen. Therefore, man-hours are not required and the cost of the stereo camera can be reduced.
  • FIG. 11A is a perspective view of a portable terminal having a stereo camera according to a modification manufactured by the manufacturing method of the present embodiment
  • FIG. 11B is a partial cross-sectional view thereof.
  • the portable terminal MV has a case CA on the back side, but the stereo camera of this modification also uses the case CA as a support member. That is, as shown in FIG. 11B, the case CA has circular openings CAL and CAR, into which the lens barrel portions 24 of the camera modules 20L and 20R are fitted. Other than that, it is the same as that of embodiment mentioned above also including an adjustment process.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Stereoscopic And Panoramic Photography (AREA)

Abstract

L'invention concerne : un procédé de production de caméra stéréo qui fait en sorte de simplifier au maximum le réglage de deux modules de caméra, permet de réduire la vraisemblance de l'apparition de déviations ou autres par rapport à la position réglée pour cause de vibrations, chocs ou variations dans le temps, et est capable de présenter des performances stables sur le long terme ; et une caméra stéréo produite par le procédé de production de caméra stéréo. Puisqu'il est possible de faire en sorte que la déviation de deux images de points noirs (BPL, BPR) se trouve uniquement dans le sens de la longueur (ou dans le sens gauche-droite) d'un écran d'observation au moyen d'un simple réglage consistant à faire tourner les modules de caméra (20L, 20R), il est possible de réduire le coût de la caméra stéréo sans augmenter le nombre d'étapes.
PCT/JP2012/063294 2011-06-10 2012-05-24 Procédé de production de caméra stéréo et caméra stéréo WO2012169363A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011130062 2011-06-10
JP2011-130062 2011-06-10

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WO2012169363A1 true WO2012169363A1 (fr) 2012-12-13

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021051325A (ja) * 2020-12-15 2021-04-01 日立Astemo株式会社 撮像装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006091177A (ja) * 2004-09-21 2006-04-06 Fuji Photo Film Co Ltd ステレオカメラ、およびステレオカメラ用ステー
JP2006270264A (ja) * 2005-03-22 2006-10-05 Fuji Photo Film Co Ltd 複眼撮影装置
JP2008051925A (ja) * 2006-08-23 2008-03-06 Nikon Corp 光軸調整方法
JP2009094648A (ja) * 2007-10-04 2009-04-30 Chunichi Denshi Co Ltd 複眼式カメラの光軸調整装置
JP2011061301A (ja) * 2009-09-07 2011-03-24 Sony Corp 撮像装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006091177A (ja) * 2004-09-21 2006-04-06 Fuji Photo Film Co Ltd ステレオカメラ、およびステレオカメラ用ステー
JP2006270264A (ja) * 2005-03-22 2006-10-05 Fuji Photo Film Co Ltd 複眼撮影装置
JP2008051925A (ja) * 2006-08-23 2008-03-06 Nikon Corp 光軸調整方法
JP2009094648A (ja) * 2007-10-04 2009-04-30 Chunichi Denshi Co Ltd 複眼式カメラの光軸調整装置
JP2011061301A (ja) * 2009-09-07 2011-03-24 Sony Corp 撮像装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021051325A (ja) * 2020-12-15 2021-04-01 日立Astemo株式会社 撮像装置
JP6995968B2 (ja) 2020-12-15 2022-02-21 日立Astemo株式会社 撮像装置

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