WO2008018675A1 - Charge coupled device for obtaining a 3-dimensional digital image - Google Patents
Charge coupled device for obtaining a 3-dimensional digital image Download PDFInfo
- Publication number
- WO2008018675A1 WO2008018675A1 PCT/KR2007/001485 KR2007001485W WO2008018675A1 WO 2008018675 A1 WO2008018675 A1 WO 2008018675A1 KR 2007001485 W KR2007001485 W KR 2007001485W WO 2008018675 A1 WO2008018675 A1 WO 2008018675A1
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- WO
- WIPO (PCT)
- Prior art keywords
- slit plate
- charge coupled
- coupled device
- light
- receiving element
- Prior art date
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- 230000003287 optical effect Effects 0.000 claims abstract description 13
- ORQBXQOJMQIAOY-UHFFFAOYSA-N nobelium Chemical compound [No] ORQBXQOJMQIAOY-UHFFFAOYSA-N 0.000 description 19
- 230000015572 biosynthetic process Effects 0.000 description 17
- 238000000034 method Methods 0.000 description 14
- 239000011521 glass Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 206010047571 Visual impairment Diseases 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 210000004556 brain Anatomy 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000002059 diagnostic imaging Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 238000001093 holography Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14625—Optical elements or arrangements associated with the device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/1462—Coatings
- H01L27/14623—Optical shielding
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14603—Special geometry or disposition of pixel-elements, address-lines or gate-electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/1462—Coatings
- H01L27/14621—Colour filter arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/148—Charge coupled imagers
- H01L27/14831—Area CCD imagers
Definitions
- the present invention relates, in general, to a charge coupled device for digital image recording devices and, more particularly, to a charge coupled device, which is installed in various types of digital image recording devices, such as digital cameras, digital camcorders, and digital medical imaging devices, and enables particularly distinct and clear 3-dimensional images to be obtained.
- digital image recording devices such as digital cameras, digital camcorders, and digital medical imaging devices
- a polarizing filter method is technology for separating images acquired with the left and right eyes using a shielding effect obtained by the combination of orthogonal polarizing devices, and is implemented such that the left and right images are protected on a screen through a video projector equipped with orthogonal polarizing filters or the like, and are observed using glasses equipped with orthogonal polarizing filters or the like.
- a time division stereoscopic representation method of alternately and sequentially switching left and right images, having a parallax difference therebetween, presenting the left and right images to both eyes, and representing the left and right images as a 3-dimensional image using shutter glasses switched in synchronization with the switching operation of left and right images.
- glasses-free methods requiring no special glasses, such as a parallax barrier method, a lenticular method, and a holography method.
- the parallax barrier method is implemented such that images corresponding to left and right eyes are alternately arranged behind a thin slit-shaped opening called a parallax barrier and are spaced apart from the parallax barrier by a suitable distance, so that they can thus be precisely separated and viewed as a 3-dimensional image when the left and right images are viewed through the opening at a specific time point.
- the lenticular method is im- plemented such that left and right images are arranged on the focal surface of a semi- cylindrical lens, called a lenticular screen, in stripes, are separated depending on the directivity of a lenticular lens plate, and are thus represented as a 3-dimensional image without requiring glasses when the images are observed through the lenticular lens plate.
- FIG. 1 is a schematic diagram showing the construction of an optical device for recording a 3-dimensional image using slits
- FIG. 2 is a conceptual view showing the image formation of a 3-dimensional image recording device using a slit plate proposed by the present applicant.
- a film which is an image recording medium
- the above patent is configured such that 3-dimensional image information is recorded on a film 203, which is an image recording medium, with the film 203 being located a sufficient distance from a slit plate to be far beyond the Fresnel region, thus preventing an unnecessary afterimage, attributable to the characteristics of a slit plate 204, from being recorded.
- the optimal image formation distance between the slit plate 204 and the film 203 is determined according to the ratio of the widths of the transparent parts and the opaque parts of the slit plate.
- "a” denotes the length of the Fresnel region, which is the region in which light, passed through slits, travels straight
- "b” denotes an optimal image formation distance requiring that an image is formed at a location beyond the Fresnel region.
- Reference numeral 201 which is not described, denotes the main body of the image recording device, and reference numeral 202 denotes a lens.
- FIG. 3 is a longitudinal sectional view of a conventional Charge Coupled Device
- a CCD 300 includes a main body 301, having an open top and a cavity formed therein, and having a plurality of chip pins 303 formed on the outer surface thereof, a light receiving element 302 composed of a plurality of pixels and mounted on the bottom surface of the interior of the main body, and a transparent glass plate 304 for covering the opening of the cavity of the main body 301.
- Such a CCD is adapted to accumulate charges corresponding to image information of light in the light receiving element, which sensitively reacts to the brightness of image light passed through a lens, and to record and store the charges in an external memory device or the like.
- Most digital image recording devices have recently adopted the CCD.
- an object of the present invention is to provide a charge coupled device, which is installed in various types of digital image recording devices, such as digital cameras or digital camcorders, and can thus be improved to directly obtain a 3-dimensional image without requiring a separate means.
- an object of the present invention is to provide a charge coupled device for digital image recording devices, which can directly record information about a 3-dimensional image, obtained from light passed through a lens, on a light receiving element placed in the charge coupled device, without requiring separate polarizing glasses, a separate lenticular lens or other additional devices, and can store the recorded information in memory or the like.
- Coupled Device having the following technical characteristics.
- the present invention provides a charge coupled device for obtaining a three- dimensional image, the charge coupled device being installed in a digital image recording device to output an image of a subject, comprising a main body, having an open top and a cavity formed therein, and having a chip pin formed on an outer surface thereof to transfer information to an electronic element of the digital image recording device, a light receiving element mounted on a bottom surface of interior of the main body and comprising a set of a plurality of optical sensors, which are sensitive to light, and a slit plate configured to cover an opening of the cavity of the main body, and formed such that transparent parts and opaque parts, widths of which have a uniform ratio, are arranged to alternate, wherein a distance between the slit plate and the light receiving element is optimized so that image information can be recorded on the light receiving element at a location beyond a Fresnel region, in which light travels straight when light passed through a lens passes through the transparent parts of the slit plate.
- the distance between the slit plate and the light receiving element may be optimized so that intersections of diffracted light, passed through neighboring transparent parts of the slit plate, are located on an image recording surface of the light receiving element.
- the charge coupled device may further comprise a separate color filter provided on a top of the slit plate, or the slit plate may be formed to be integrated with the color filter.
- the transparent parts and the opaque parts may have a ratio of widths thereof that falls within a range of 1:3 to 1:6, or a range of 3:1 to 6:1.
- the transparent parts and the opaque parts of the slit plate may define slits, each having a shape corresponding to any one selected from a diagonal shape and a concentric circular shape.
- 3-dimensional image information is recorded on a light receiving element, which is an optical recording medium located a sufficient distance from a slit plate to be beyond a Fresnel region, using the slit plate, in which multiple slits, defined by transparent parts and opaque parts, are alternately arranged, thus enabling a high-quality 3-dimensional image, which is clear and has no afterimage, to be obtained.
- the present invention is advantageous in that a slit plate, in which transparent parts and opaque parts, the widths of which have a uniform ratio, are arranged to alternate, can be integrated with a color filter, so that the construction of a CCD is further simplified, thus realizing the compactness of a manufacturing process and economic effects, such as the reduction of manufacturing costs.
- FIG. 1 is a schematic diagram showing the construction of an optical device for recording a 3-dimensional image using slits
- FIG. 2 is a conceptual view showing the image formation of a 3-dimensional image recording device using a slit plate proposed by the present applicant
- FIG. 3 is a longitudinal sectional view of a conventional charge coupled device
- FIG. 4 is a longitudinal sectional view of a charge coupled device according to an embodiment of the present invention.
- FIG. 5 illustrates a plan view and a partially enlarged view of a slit plate installed in the charge coupled device of FIG. 4;
- FIG. 6 is a plan view of a slit plate according to a second embodiment of the present invention.
- FIG. 7 is a plan view of a slit plate according to a third embodiment of the present invention.
- FIG. 8 is a view schematically showing a process in which light, passed through a lens, passes through slits corresponding to transparent parts, so that image information is recorded on a light receiving element;
- FIGS. 9 to 11 are views schematically showing the travel path of light to describe the differences between images corresponding to image formation distances. Best Mode for Carrying Out the Invention
- FIG. 4 is a longitudinal sectional view of a charge coupled device according to an embodiment of the present invention
- FIG. 5 illustrates a plan view and a partially enlarged view of a slit plate installed in the charge coupled device of FIG. 4.
- Typical 3-dimensional imaging technology using slits is implemented such that image information is recorded on an image recording medium when light, passed through the slits, falls within a range of a Fresnel region, that is, a region in which light travels straight. Therefore, according to this conventional technology, unfavorable effects surely occur due to the slits, and unnecessary patterns caused by the characteristics of the slits appear on the recorded image.
- a Charge Coupled Device (CCD) 100 includes a main body 101, having an open top and a cavity formed therein and having chip pins 103 formed on portions of the outer surface thereof to transfer information to the electronic elements of an image recording device, a light receiving element 102 mounted on the bottom surface of the interior of the main body 101 and configured to record the image information of transmitted light in the form of an electrical signal, and a slit plate 110 configured to cover the opening of the cavity of the main body 101 and formed such that multiple slits, defined by transparent parts 111 and opaque parts 112, are arranged to alternate.
- the image of a subject is formed on the light receiving element 102 of the CCD 100, which is an imaging device, through a lens (not shown), and is accumulated in the light receiving element 102 as charges.
- the charges accumulated in the light receiving element 102 are processed by a preprocessor (not shown) or the like in a predetermined manner, and the processed charges are stored in a storage device such as memory in the format of digital information through an Analog/Digital (AfD) converter or the like.
- the digital image information stored in the memory is subsequently displayed as an image on a display device, such as a Liquid Crystal Display (LCD).
- LCD Liquid Crystal Display
- the light receiving element 102 is a set of a plurality of optical sensors or pixels made of silicon, which is sensitive to light.
- the image formation distance of the present invention extends beyond the Fresnel region, which is the region in which light, passing through the transparent parts of the slit plate 110, travels straight. That is, the light receiving element 102 is located a sufficient distance from the slit plate to be beyond the Fresnel region.
- a slit plate 110 in which multiple vertical transparent parts 111 and opaque parts 112 are arranged to alternate, is used.
- Each of the transparent parts 111 and the opaque parts 112 may be preferably formed to have a width of several micrometers, and the ratio of the width of the transparent parts to the width of the opaque parts may fall within a range from 1:3 to 1:6, or from 3:1 to 6:1.
- the slit plate 110 may be formed to have a thickness of about 50 D to 0.5 D.
- the optimal image formation distance that can be obtained by the slit plate 110 of the present invention varies with the magnitudes of respective widths of the transparent parts 111 and the opaque parts 112, or the ratio of the widths thereof.
- the image formation distance of the present invention is 11 to 12 D.
- the transparent parts 111 are not formed by making openings in the slit plate 110. That is, the slit plate 110 of the present invention is made of material that can be used for an optical lens or an optical filter, and the transparent parts 111 are formed to be transparent so as to allow light to pass therethrough, unlike the opaque parts 112.
- FIG. 8 is a view schematically showing a process in which light, passed through a lens, passes through the slits corresponding to the transparent parts 111 and image information is recorded on the light receiving element 102.
- the light receiving element 102 placed in the CCD 100 of the present invention is located a sufficient distance from the slit plate 110 to be beyond the Fresnel region.
- light passing through the transparent parts 111 via a lens 400 travels straight in a Fresnel region 132, and light passing through the opposite edges of each transparent part 111 is diffracted to thus form diffracted light 115.
- Reference numeral 118 denotes the image formation distance of the present invention, which extends beyond the Fresnel region.
- FIGS. 9 to 11 are views schematically showing the travel path of light to describe the differences between images corresponding to image formation distances.
- FIG. 9 illustrates the case where the distance between the slit plate 110 and the light receiving element 102 of the CCD 100 is excessively long, and thus the influence of a diffraction pattern, formed when light passes through the transparent parts 111, is produced
- FIG. 10 illustrates the case where the distance between the slit plate 110 and the light receiving element 102 is excessively short, and thus the influence of a diffraction pattern, formed when light passes through the transparent parts 111, is produced.
- the image formation distance 118 of the present invention that is, the distance between the slit plate 110 and the light receiving element 102, is longer than the length of the Fresnel region, as noted above.
- the distance between the slit plate 110 and the image recording surface of the light receiving element 102, obtained when the intersections 117 of the diffracted light 115 are located on the image recording surface of the light receiving element 102, is defined as an optimal image formation distance.
- the optimal image formation distance varies with the magnitudes of respective widths of the transparent parts 111 and the opaque parts 112, or the ratio of the widths thereof.
- a separate color filter (not shown) is preferably provided on the top of the slit plate
- the color filter 110 may be integrated with the slit plate 110. In this case, since there is no need to mount a separate color filter, there are advantages in that the process of manufacturing the CCD can be simplified, and the components of the CCD can be freely designed.
- FIG. 6 illustrates a slit plate 140 according to another embodiment of the present invention.
- transparent parts 141 and opaque parts 142 are arranged to alternate and are diagonally inclined.
- directionality attributable to slits can be reduced.
- FIG. 7 illustrates a slit plate 150 according to a further embodiment of the present invention.
- transparent parts 151 and opaque parts 152 are alternately arranged while forming concentric circles.
- the control of the directionality of slits can be further facilitated.
- the present invention provides a charged coupled device, which can be installed in most digital image recording devices, such as digital cameras, digital camcorders and digital medical imaging devices. Accordingly, it can be considered that the utilization of the charge coupled device of the present invention, which is to obtain a 3-dimensional image, is high in all industrial fields.
- the digital image recording device since a digital image recording device that adopts the charge coupled device of the present invention does not need separate equipment to obtain a 3-dimensional image, the digital image recording device can be expected to be widely applied to actual various imaging device fields.
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2007800296189A CN101506982B (en) | 2006-08-08 | 2007-03-27 | Charge coupled device for obtaining a 3-dimensional digital image |
JP2009523704A JP2010500811A (en) | 2006-08-08 | 2007-03-27 | Charge coupled device for 3D digital stereoscopic image reproduction |
US12/376,619 US8542269B2 (en) | 2006-08-08 | 2007-03-27 | Charge coupled device for obtaining a 3-dimensional digital image |
CA002660460A CA2660460A1 (en) | 2006-08-08 | 2007-03-27 | Charge coupled device for obtaining a 3-dimensional digital image |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020060074485A KR20060100307A (en) | 2006-08-08 | 2006-08-08 | Three dimensional image forming charge coupled divice(3d ccd) |
KR10-2006-0074485 | 2006-08-08 | ||
KR1020060082948A KR100843621B1 (en) | 2006-08-08 | 2006-08-30 | Charge coupled device for forming 3-dimensional image |
KR10-2006-0082948 | 2006-08-30 |
Publications (1)
Publication Number | Publication Date |
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WO2008018675A1 true WO2008018675A1 (en) | 2008-02-14 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/KR2007/001485 WO2008018675A1 (en) | 2006-08-08 | 2007-03-27 | Charge coupled device for obtaining a 3-dimensional digital image |
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WO (1) | WO2008018675A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5548362A (en) * | 1994-05-09 | 1996-08-20 | Image Technology International, Inc. | Parallax controllable multiple-lens camera |
US6580557B2 (en) * | 2000-12-12 | 2003-06-17 | Industrial Technology Research Institute | Single lens instantaneous 3D image taking device |
US6795241B1 (en) * | 1998-12-10 | 2004-09-21 | Zebra Imaging, Inc. | Dynamic scalable full-parallax three-dimensional electronic display |
US6950121B2 (en) * | 1999-12-28 | 2005-09-27 | Vrex, Inc. | 3D camera |
-
2007
- 2007-03-27 WO PCT/KR2007/001485 patent/WO2008018675A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5548362A (en) * | 1994-05-09 | 1996-08-20 | Image Technology International, Inc. | Parallax controllable multiple-lens camera |
US6795241B1 (en) * | 1998-12-10 | 2004-09-21 | Zebra Imaging, Inc. | Dynamic scalable full-parallax three-dimensional electronic display |
US6950121B2 (en) * | 1999-12-28 | 2005-09-27 | Vrex, Inc. | 3D camera |
US6580557B2 (en) * | 2000-12-12 | 2003-06-17 | Industrial Technology Research Institute | Single lens instantaneous 3D image taking device |
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