WO2015053728A2 - Objectif créant un contenu tridimensionnel destiné à être affiché directement sur des téléviseurs 3d - Google Patents

Objectif créant un contenu tridimensionnel destiné à être affiché directement sur des téléviseurs 3d Download PDF

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Publication number
WO2015053728A2
WO2015053728A2 PCT/TR2014/000375 TR2014000375W WO2015053728A2 WO 2015053728 A2 WO2015053728 A2 WO 2015053728A2 TR 2014000375 W TR2014000375 W TR 2014000375W WO 2015053728 A2 WO2015053728 A2 WO 2015053728A2
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WO
WIPO (PCT)
Prior art keywords
objective
image
enables
sensor
focusing
Prior art date
Application number
PCT/TR2014/000375
Other languages
English (en)
Other versions
WO2015053728A3 (fr
Inventor
Onur YORULMAZ
Osman KAYATAS
Original Assignee
Oes Optik Elektronik Yazilim Donanim Bilisim Ticaret Taahhut Pazarlama Ithalat Ihracat Ve Sanayi Limited Sirketi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Oes Optik Elektronik Yazilim Donanim Bilisim Ticaret Taahhut Pazarlama Ithalat Ihracat Ve Sanayi Limited Sirketi filed Critical Oes Optik Elektronik Yazilim Donanim Bilisim Ticaret Taahhut Pazarlama Ithalat Ihracat Ve Sanayi Limited Sirketi
Publication of WO2015053728A2 publication Critical patent/WO2015053728A2/fr
Publication of WO2015053728A3 publication Critical patent/WO2015053728A3/fr

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Classifications

    • 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
    • G03B35/10—Stereoscopic photography by simultaneous recording having single camera with stereoscopic-base-defining system
    • 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/17—Bodies with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
    • 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
    • H04N13/207—Image signal generators using stereoscopic image cameras using a single 2D image sensor
    • H04N13/218—Image signal generators using stereoscopic image cameras using a single 2D image sensor using spatial multiplexing

Definitions

  • the present invention relates to an objective which enables to create three dimensional content that can be displayed directly in 3D (three dimensional) televisions, and which is suitable for cameras and video cameras.
  • Creating three dimensional image is enabled by sending two images obtained from two sensors, which are distant from each other in two-eye distance, separately to both eyes.
  • the process of obtaining two different images is done conventionally with cameras especially produced for this purpose, by using two different sensors (image sensing surface).
  • new technologies project two different images on a single and large sensors such as DSLR (Digital Single Lens Reflex) and enable to obtain three dimensional content by this way. So far, these technologies have needed software support in order to create images to be watched on 3D televisions (3DTV).
  • the objective called Panasonic Lumix G 3D in the state of the art required a software which processes the image obtained in the corresponding camera and make it compatible with 3DTVs.
  • the obtained image is made compatible with 3DTV by means of a computer software.
  • This makes interim processes such as installing a computer software and formatting the image with this software obligatory to transfer the output to 3DTV, in models that are not produced compatible with the objective.
  • the process in the Lumix model is the process of cropping the picture (or video) obtained from the sensor. At that time, most of the data coming from the sensor is lost and causes to fail in benefiting from the complete sensor resolution.
  • this process acts as a digital zooming on the output, the original objective focus distance changes and the objective gets distant from the wide-angle.
  • the objective of the present invention is to provide an objective which enables the image to be projected on the sensor (image sensing surface) to be optically compressed horizontally or expanded vertically and thus made suitable to be displayed directly on 3DTVs.
  • Still another objective of the present invention is to provide an objective which enables to obtain 3D images in all devices with replaceable objective, as there is no obligation for camera models including software for 3D conversion.
  • a further objective of the present invention is to provide an objective which enables to obtain wider-angle images than similar objectives and get maximum benefit from resolution.
  • the present invention is an objective which is produced for image creation with replaceable objectives.
  • the images obtained by this objective is optically formatted to be viewed directly on 3DTVs.
  • the images that are obtained by a camera or video camera on which the objective can be mounted can be viewed on the available 3DTVs without a need for any software.
  • Figure 1 is the perspective view of the inner structure of inventive objective.
  • Figure 2. is the top view of the inner structure of the inventive objective.
  • Figure 3. is the top view of the inner structure of the objective designed to decrease the size thereof.
  • Figure 4. is the perspective view of the second design of the inventive objective enabling the transition between two images to be clear.
  • Figure 5. is the open (separately distant) view of the Porro-Abbe prisms used as image flipper in the second design of the inventive objective.
  • Figure 6. is the top view of the second design of the inventive objective.
  • Figure 7. is the top view of the inner structure of the second design of the objective, designed to increase the size thereof.
  • Figure 8 is the perspective view of the objective, the size of which is decreased by a mask placed in the middle of the Porro-Abbe prism used as an image flipper.
  • Figure 9. is the view of the cylindrical system that makes compression in horizontal and expansion in vertical.
  • Figure 10. is the view of an exemplary image and distortion between these two images projected being compressed to both sides of the image sensing sensor; and the state thereof when the distortion is corrected.
  • the components given in the figures are assigned reference numbers as follows:
  • An objective ( 1 ) which can be mounted on cameras or video cameras and enables to obtain image output directly compatible with 3DTV format essentially comprises;
  • At least one focusing system (3) which enables the image coming with two different angles to be focused on the right and left half of the sensor (2)
  • at least one projecting system (4) which enables the images coming from distant points from each other to get closer to each other
  • At least one cylindrical system (5) which enables optical compression or expansion in one direction by focusing and expanding, to make the image coming to the focusing system (3) to get into a format compatible to be displayed on 3DTVs,
  • At least one mask (6) which enables to cover the image transition point wherein there is visual distortion on the sensor (2)
  • the inventive objective ( 1) consists of two different designs.
  • the image coming in two angles is projected on the sensor (2) by means of two different focusing systems (3).
  • a projecting system (4) is used.
  • This projecting system (4) can be configured by means of mirrors (4.1) or prisms.
  • the images coming from distant places are approached to each other by means of two mirrors (4.1 ) (or prisms) placed on both sides.
  • a cylindrical system (5) consisting of two cylindrical lenses.
  • the said cylindrical lenses function compression (horizontal) or expansion (vertical) in one direction.
  • the focusing system (3 ) is provided as a prime lens design which does not focus and has a fixed focal length.
  • all optical aberrations can be removed by means of optical designs.
  • an achromatic doublet in order to remove problems such as chromatic aberration and spherical aberration in the focusing system (3), an achromatic doublet is used.
  • Achromatic doublet consists of two lenses having different diffraction indexes. Their main purpose is to prevent chromatic aberration caused by the diffraction of the different wave lengths of light in different angles but they can also prevent spherical aberrations.
  • multiple lens systems like Tessar can be used to provide correct focusing of the rays.
  • the focusing system (3) may consist of only one lens.
  • the parallel rays can be focused on one surface on the sensor (2) but there is an observable decrease in the image quality in this condition.
  • the projecting system (4) which can be formed of mirrors (4.1) or prisms enables to slide the coming image to the side. By means of the said projecting system (4), not only more natural depth is obtained by increasing the angle difference between the images but also an extra space is obtained needed for the cylindrical system (5) enabling compression/expansion of the image in one direction. Normally, the difference between two eyes of people is about 10 cm.
  • the images to be sent to the right and left eyes should be taken from two objectives ( 1 ) placed in this distance. Otherwise, the obtained images may not have sufficient depth.
  • the said projecting system (4) is used. If this projecting system (4) is not used and the focusing system (3) is placed directly in alignment with the sensor (2), the angular distance between the two focusing objective will have to be around 1 -2 cm.
  • the cylindrical system (5) in the preferred embodiment of the invention essentially enables to covert images into a format directly compatible with 3DTVs.
  • One of these input methods is top and bottom and the other is side by side.
  • 3DTV operating in side by side input format divides the coming image in two from the centre by a vertical line, horizontally expands the pictures in the right and left by cutting and thereby obtains two full screen images again. Then, it sends these images to right and left eye and enables the user to sense the three dimensional content.
  • images are object to horizontal compression process. This compression process is performed in the inventive objective ( 1 ) optically by means of the cylindrical system (5).
  • the coming image is horizontally compressed and cylindrical lenses are used for this horizontal compression process.
  • the rear one of the said cylindrical lenses (the one closer to the sensor (2)) horizontally focuses the parallel light, while the front one expands it in vertical.
  • the front lenses show thick concave cylindrical lens (5.1) features and they have a focal length in proportion with the rear convex cylindrical lenses (5.2). For instance, if the focal length of the front thick concave lens (5.1 ) is set as -f, the focal length of the convex cylindrical lens (5.2) at the back should be 2f.
  • cylindrical achromatic doublets are used to protect the system from achromatic aberrations.
  • the said lenses are in circular form and cylindrical forms thereof can be produced and thus possible spherical and chromatic aberration to occur during horizontal compression/vertical expansion of the image can be prevented.
  • the structure of devices like zoom lens system can be used for horizontal compression or vertical expansion in this system on condition that they are transformed into cylindrical form.
  • cylindrical versions of objective designs that can successfully perform focusing and distribution functions can be used in this system.
  • the cylindrical system (5) a similar result is obtained by vertical expansion instead of horizontal compression stated in the compression method ( Figure 9).
  • the system is performed by combination of two different cylindrical lens systems, but this time for expansion process, the front lenses show convex cylindrical lens (5.2) features and they focus parallel rays so as to obtain a horizontal line.
  • the rear lenses show concave cylindrical lenses (5.1 ) and they distribute the coming rays.
  • the focal length of the convex cylindrical lenses (5.2) used in the front is set as 2f for example, the focal length of the concave cy lindrical lenses (5.1 ) at the back should be -f.
  • the lenses used in the expansion method are placed in 90 degrees angle to the lenses used in the compression method.
  • the image obtained as a result of the optical system first design of the inventive objective (1 ) can be transferred directly to 3DTV without a need for any software or apparatus.
  • the details of the second design made to prevent visual aberrations in the transition between images are given below.
  • the coming image is compressed horizontally BY the cylindrical system (5), like in the first design, but it is focused to an interface before it is focused to the sensor (2) by the focusing system (3).
  • a clear transition is obtained between the two images projected on the sensor (2).
  • the blurs between the two images projected on the sensor (2) are prevented by refocusing the image to be projected to the right and left sides of the sensor (2) onto an interface beforehand.
  • the upper drawing shows the original image; the right lower drawing shows the distortion between the images and the right one shows the two images that are corrected by being separated sharply.
  • a porro-abbe prism or double porro prism can be used as an image flipper (7) that enables the function to flip the image optically ( Figure 5).
  • a mirror system can be used as image flipper.
  • this mirror or prism system can be distributed in other systems allowing the decrease of sizes of the objective ( 1 ) ( Figures 7 and 8).
  • the image is projected twice.
  • the first one of these is the image projected reversely on the masking surface at the end of the focusing system (3).
  • the image focused here is distributed after being masked by the mask (6) and can proceed in reverse position.
  • diffuser ground glass
  • the distributed reverse image can be adjusted by an image flipper (7) set up like porro-abbe prism or double porro prism ad is projected reversely again on the sensor (2) by means of another focusing system (3) closer to the sensor (2). Accordingly, by means of the masking applied to the image in this second design, the right and left sides of the sensor (2) are separated from each other with a sharp line.

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

Abstract

La présente invention concerne un objectif (1) qui est compatible avec des appareils photo ou des caméras vidéo à objectifs interchangeables et qui permet de créer une image pouvant être affichée directement sur des téléviseurs 3D. L'objectif (1) comprend au moins un capteur (2) utilisé pour capturer des images ; au moins un système de mise au point (3) qui permet de mettre au point l'image provenant de deux angles différents sur les moitiés gauche et droite du capteur (2) ; au moins un système de projection (4) qui permet de rapprocher les images provenant de points distants entre eux ; au moins un système cylindrique (5) qui permet une compression ou une expansion optique dans une direction par mise au point et expansion, pour transformer l'image provenant du système de mise au point (3) dans un format compatible avec un affichage sur des téléviseurs 3D ; au moins un masque (6) qui permet de couvrir le point de transition des images à l'endroit où il y a une distorsion visuelle sur le capteur (2) ; et au moins un inverseur d'image (7) qui retourne l'image sur 180 degrés.
PCT/TR2014/000375 2013-10-11 2014-10-10 Objectif créant un contenu tridimensionnel destiné à être affiché directement sur des téléviseurs 3d WO2015053728A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2013/12069 2013-10-11
TR201312069 2013-10-11

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WO2015053728A2 true WO2015053728A2 (fr) 2015-04-16
WO2015053728A3 WO2015053728A3 (fr) 2015-07-16

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104834102A (zh) * 2015-05-22 2015-08-12 郭少军 一种可将单摄像机变为立体摄像机的光学系统及其方法
CN109901907A (zh) * 2019-03-15 2019-06-18 北京星网锐捷网络技术有限公司 一种传输虚拟桌面的方法和服务器
JP2020008629A (ja) * 2018-07-04 2020-01-16 キヤノン株式会社 レンズ装置およびそれを有する撮像装置
CN115314698A (zh) * 2022-07-01 2022-11-08 深圳市安博斯技术有限公司 一种立体拍摄及显示装置、方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3674339A (en) 1970-09-16 1972-07-04 Canon Kk Stereoscopic photograph system using a stereoscopic attachment to a camera
US20080239064A1 (en) 2007-03-29 2008-10-02 Fujifilm Corporation Stereoscopic image pickup apparatus and method of adjusting optical axis

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Publication number Priority date Publication date Assignee Title
JPH0795619A (ja) * 1993-09-27 1995-04-07 Hitachi Medical Corp ステレオ映像入出力装置
DE69921240T2 (de) * 1998-07-09 2006-02-02 Matsushita Electric Industrial Co., Ltd., Kadoma Vorrichtung zur Herstellung eines Stereoskopischen Bildes
JP2005241791A (ja) * 2004-02-25 2005-09-08 Olympus Corp ステレオ撮像装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3674339A (en) 1970-09-16 1972-07-04 Canon Kk Stereoscopic photograph system using a stereoscopic attachment to a camera
US20080239064A1 (en) 2007-03-29 2008-10-02 Fujifilm Corporation Stereoscopic image pickup apparatus and method of adjusting optical axis

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104834102A (zh) * 2015-05-22 2015-08-12 郭少军 一种可将单摄像机变为立体摄像机的光学系统及其方法
JP2020008629A (ja) * 2018-07-04 2020-01-16 キヤノン株式会社 レンズ装置およびそれを有する撮像装置
JP7214382B2 (ja) 2018-07-04 2023-01-30 キヤノン株式会社 レンズ装置およびそれを有する撮像装置
JP7443582B2 (ja) 2018-07-04 2024-03-05 キヤノン株式会社 レンズ装置およびそれを有する撮像装置
CN109901907A (zh) * 2019-03-15 2019-06-18 北京星网锐捷网络技术有限公司 一种传输虚拟桌面的方法和服务器
CN109901907B (zh) * 2019-03-15 2022-05-20 北京星网锐捷网络技术有限公司 一种传输虚拟桌面的方法和服务器
CN115314698A (zh) * 2022-07-01 2022-11-08 深圳市安博斯技术有限公司 一种立体拍摄及显示装置、方法

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