WO2014157847A1 - 깊이 영상 획득 장치 및 그를 이용한 디스플레이 장치 - Google Patents
깊이 영상 획득 장치 및 그를 이용한 디스플레이 장치 Download PDFInfo
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- WO2014157847A1 WO2014157847A1 PCT/KR2014/001811 KR2014001811W WO2014157847A1 WO 2014157847 A1 WO2014157847 A1 WO 2014157847A1 KR 2014001811 W KR2014001811 W KR 2014001811W WO 2014157847 A1 WO2014157847 A1 WO 2014157847A1
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- WIPO (PCT)
- Prior art keywords
- light
- unit
- disposed
- light source
- depth image
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4814—Constructional features, e.g. arrangements of optical elements of transmitters alone
- G01S7/4815—Constructional features, e.g. arrangements of optical elements of transmitters alone using multiple transmitters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/06—Optical design with parabolic curvature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
- G01S17/894—3D imaging with simultaneous measurement of time-of-flight at a 2D array of receiver pixels, e.g. time-of-flight cameras or flash lidar
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
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- 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
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- 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
- H04N13/271—Image signal generators wherein the generated image signals comprise depth maps or disparity maps
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
- H01S5/0071—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping for beam steering, e.g. using a mirror outside the cavity to change the beam direction
Definitions
- the present invention relates to an apparatus for acquiring a depth image, and more particularly, to a depth image obtaining apparatus capable of acquiring a depth image of a subject located at a far distance and a display apparatus using the same.
- the 3D image information includes geometry and color information, which may be obtained by using a depth image.
- Such depth images can be acquired directly through hardware equipment such as a depth camera, and indirectly through software image processing called computer vision technology.
- the depth camera is a method of acquiring a depth image using a time of flight (ToF).
- ToF time of flight
- the method of using the time of flight is a method of measuring the time when the light irradiated to the subject is reflected back from the subject, using a special sensor sensitive to the light to detect the moment when the reflected light returns to the light receiver
- the light source should be arranged to secure a safety distance mechanically.
- This mechanical safety distance has been a factor in increasing the thickness and size of the lighting module relative to the depth camera.
- the technical problem to be solved by the present invention is to arrange the reflector in the light irradiation unit, to solve the eye-safety problem without increasing the thickness and size of the lighting module, and to provide a depth for a subject located at a distance
- An apparatus for obtaining a depth image capable of precisely obtaining an image and a display apparatus using the same are provided.
- a depth image obtaining apparatus includes a light irradiation unit for irradiating light to a predetermined subject, a light receiving unit for receiving light reflected from the subject, a control unit for controlling the light irradiation unit and the light receiving unit
- the light irradiation unit may include a light source unit that emits light in a first direction, and a reflector that reflects light emitted in a first direction from the light source unit in a second direction.
- the central axis of the light emitted in the first direction and the central axis of the light reflected in the second direction may be perpendicular to each other.
- the light source unit may be at least one laser diode or a vertical cavity surface emitting laser (VCSEL).
- VCSEL vertical cavity surface emitting laser
- the reflector may be a parabolic total reflection mirror.
- the light source unit and the reflector unit may be disposed on the same substrate and arranged in parallel.
- the light irradiation unit may further include an optical member disposed between the light source unit and the reflecting unit and configured to provide light emitted from the light source unit as parallel light.
- the light irradiating portion and the light receiving portion may be disposed on the same substrate to form an integrated module.
- the integrated module including the light irradiation unit and the light receiving unit may be mounted on the display device and exposed to the outside from the display device.
- the light irradiation unit may be disposed on the first substrate to constitute the first separation module, and the light receiving unit may be disposed on the second substrate to constitute the second separation module.
- the first separation module including the light irradiation unit and the second separation module including the light receiving unit are mounted to the display device, the first separation module is disposed inside the display device, and the second separation module is the display. It can be exposed to the outside from the device.
- the first separation module may be disposed behind the display panel of the display device.
- the display device using the depth image acquisition device a display panel, a backlight unit for irradiating light to the display panel, a light irradiation unit disposed in the backlight unit for irradiating light to a predetermined subject, the display panel
- a light receiving unit arranged at a periphery of the light receiving unit to receive light reflected from the subject, a light irradiation unit and a control unit controlling the light receiving unit, wherein the light irradiation unit includes a light source unit emitting light in a first direction, and a light source unit emitting in a first direction It may include a reflector for reflecting the light to be in the second direction.
- the backlight unit includes a substrate, a light source module including a plurality of light sources disposed on the substrate, a diffuser plate disposed on the light source module, and an optical member disposed on the diffuser plate.
- the light source module may be disposed in at least one of the light source module and the diffuser plate, between the diffuser plate and the optical member.
- the light irradiation unit may be disposed between the light sources of the light source module.
- the light irradiation part and the light source may be disposed on the same substrate.
- a heat sink may be disposed under the substrate of the light source module.
- the light irradiation unit may be disposed on one side of the light source module and have a predetermined interval.
- a color blocking filter may be disposed on the light irradiation part.
- the light irradiation unit is arranged in a plurality of individual modules, or a plurality of group modules including a plurality of individual modules, the plurality of individual modules are arranged so that the distance to the light receiving unit is equal to each other,
- the individual groups of may be arranged such that the distances to the light receiving portion are the same.
- the light irradiation part may be disposed at the periphery of the display panel to be adjacent to the light receiving part.
- depth image acquisition device and the display device using the same while solving the eye-safety problem without increasing the thickness and size of the lighting module, depth image for a subject located at a distance There is an effect that can be obtained precisely.
- FIG. 1 is a block diagram showing a depth image acquisition device according to the present invention.
- FIG. 2 is a side view showing a light irradiation part according to the first embodiment of the present invention
- FIG. 3 is a side view showing a light irradiation part according to a second embodiment of the present invention.
- 4A and 4B are plan views illustrating an array of light irradiation units according to FIG. 2;
- 5A and 5B are plan views illustrating an array of light irradiation units according to FIG. 3;
- 6A and 6B are plan views illustrating arrangements of a light irradiation part and a light receiving part
- FIG. 7A and 7B illustrate a depth image obtaining apparatus mounted on a display apparatus
- FIG. 8 is a diagram illustrating a depth image obtaining apparatus applied to a display apparatus having a large screen
- FIGS. 9A to 9D are exploded views illustrating a display apparatus using a depth image obtaining apparatus according to the present invention.
- FIG. 10 is a view showing an arrangement of a light irradiation unit applied to the backlight unit of the display device according to the present invention.
- FIG. 11A and 11B are cross-sectional views taken along line II of FIG. 10;
- FIG. 12 is a block diagram showing a control unit for controlling a backlight unit of a display device according to the present invention.
- FIG. 13A and 13B illustrate an arrangement of a light irradiation unit disposed in a backlight unit of a display device
- 14A and 14B illustrate an arrangement of a light irradiation part disposed in a frame of the display device.
- FIG. 1 is a block diagram illustrating a depth image obtaining apparatus according to an exemplary embodiment of the present invention.
- the depth image obtaining apparatus 1 may include a light irradiation unit 100, a light receiving unit 200, and a controller 300.
- the light irradiator 100 may irradiate light to a predetermined subject 400, and may include a light source 120 and a reflector 130.
- the light source unit 120 emits light in the first direction
- the reflection unit 130 may reflect light emitted from the light source unit 120 in the first direction in the second direction.
- the central axis of the light emitted in the first direction and the central axis of the light reflected in the second direction may be perpendicular to each other, but are not limited thereto.
- the light source unit 120 may be at least one laser diode or a vertical cavity surface emitting laser (VCSEL).
- VCSEL vertical cavity surface emitting laser
- the light source unit 120 may be a laser light source having a high output of about 100 mW or more.
- the reflector 130 may be a total reflection mirror having a predetermined curvature, for example, may be a parabolic total reflection mirror.
- the reflector 130 may have a curvature on only part of the surface, or the entire surface may have curvature.
- the surface having the curvature in the reflector 130 may be disposed to face the light exit surface of the light source unit 120.
- the curvature value of the surface of the reflector 130 plays a role in determining the diffusion angle of the light reflected from the reflector 130, the curvature value may be determined in consideration of the distance to the subject 400 and the light output of the light source.
- the light source unit 120 and the reflector 130 may be disposed on the same substrate, and may be arranged side by side.
- the reflector 130 may be positioned in the light emission direction of the light source unit 120.
- an optical member may be disposed between the light source unit 120 and the reflector 130 to provide light emitted from the light source unit 120 as parallel light.
- the light source unit 120, the optical member, and the reflector 130 may be disposed on the same substrate and arranged in a line.
- the optical member and the reflector 130 may be positioned in a line in the light emission direction of the light source unit 120.
- the first spacing between the light source 120 and the optical member and the second spacing between the optical member and the reflector 130 may be different from each other.
- the first interval between the light source unit 120 and the optical member may be smaller than the second interval between the optical member and the reflector 130.
- first interval between the light source unit 120 and the optical member and the second interval between the optical member and the reflector 130 may be the same.
- the light irradiation part 100 including the light source part 120, the optical member, and the reflecting part 130, a some number may be sufficient as it.
- the light irradiation part 100 and the light receiving part 200 may be disposed on the same substrate to form an integrated module.
- the light irradiation unit 100 may be disposed on the first substrate to constitute the first separation module, and the light receiving unit 200 may be disposed on the second substrate to constitute the second separation module.
- the light receiver 200 may receive light reflected from the subject 400.
- the light receiving unit 200 may be disposed on the same substrate as the light irradiation unit 100 and may be configured as one module.
- the light receiving unit 200 may be disposed on a different substrate from the light irradiation unit 100, and may be configured as different individual modules.
- the depth image processor may extract depth image information from light received by the light receiver 200.
- control unit 300 may control the light irradiation unit 100 and the light receiving unit 200, but the control unit 300 may drive the light irradiation unit 100 and the light receiving unit 200 simultaneously. They can also be driven at different times.
- the light irradiation unit 100 needs to secure a safety distance due to an eye-safety problem, but the overall thickness of the depth image obtaining apparatus may be greatly thickened.
- the thickness of the depth image obtaining apparatus may be reduced by the distance between the light source unit 120 and the reflector 130.
- the present invention can be replaced by a high output light source instead of a low output light source without increasing the thickness and size of the depth image acquisition device using the low output light source, thereby miniaturizing the depth image acquisition device at a long distance.
- a depth image of the located subject 400 may be accurately obtained.
- FIG. 2 is a side view showing a light irradiation part according to the first embodiment of the present invention.
- the light irradiator 100 may include a substrate 110, a light source 120, and a reflector 130 disposed on the substrate 110.
- the light source 120 and the reflector 130 may be arranged in a line on the same substrate 110 side by side.
- the reflector 130 may be positioned in the light emission direction of the light source unit 120.
- the light source unit 120 emits light in the first direction
- the reflection unit 130 may reflect light emitted from the light source unit 120 in the first direction in the second direction.
- the central axis 122 of the light emitted in the first direction and the central axis 124 of the light reflected in the second direction may be perpendicular to each other, but are not limited thereto.
- an angle between the central axis 122 of the light emitted in the first direction and the central axis 124 of the light reflected in the second direction may be an obtuse angle or an acute angle.
- the angle between the central axis 122 of the light emitted in the first direction and the central axis 124 of the light reflected in the second direction may vary depending on the curvature of the surface of the reflector 130.
- the distance between the light source unit 120 and the reflector 130 may be determined in consideration of a safety distance according to eye-safety.
- the light source unit 120 may be at least one laser diode or a vertical cavity surface emitting laser (VCSEL).
- VCSEL vertical cavity surface emitting laser
- the light source unit 120 may be a laser light source having a high output of about 100 mW or more.
- the reflector 130 may be a total reflection mirror having a predetermined curvature, for example, may be a parabolic total reflection mirror.
- the reflector 130 may have a curvature on only part of the surface, or the entire surface may have curvature.
- the surface having the curvature in the reflector 130 may be disposed to face the light exit surface of the light source unit 120.
- the curvature value of the surface of the reflector 130 plays a role in determining the diffusion angle of the light reflected from the reflector 130, the curvature value may be determined in consideration of the distance to the subject 400 and the light output of the light source.
- FIG 3 is a side view showing a light irradiation part according to a second embodiment of the present invention.
- the light irradiator 100 may include a substrate 110, a light source 120 disposed on the substrate 110, an optical member 140, and a reflector 130.
- the light source unit 120, the optical member 140, and the reflector 130 may be arranged in a line on the same substrate 110.
- the optical member 140 may be disposed between the light source unit 120 and the reflector 130 and may be positioned in the light emission direction of the light source unit 120.
- the light source unit 120 emits light in the first direction
- the optical member 140 converts the light into parallel light and emits the light in the first direction
- the reflector 130 is the optical member 140.
- the parallel light emitted from the first direction can be reflected in the second direction.
- the central axis 122 of the light emitted from the light source unit 120 and the central axis 126 of the light emitted from the optical member 140 may be the same.
- an angle between the central axis 122 of the light emitted from the light source unit 120 and the central axis 126 of the light emitted from the optical member 140 may be an obtuse angle.
- the central axis 126 of the light emitted from the optical member 140 and the central axis 124 of the light reflected from the reflector 130 may be perpendicular to each other, but are not limited thereto.
- an angle between the central axis 126 of the light emitted from the optical member 140 and the central axis 124 of the light reflected from the reflector 130 may be an obtuse angle or an acute angle.
- the angle between the central axis 126 of the light emitted from the optical member 140 and the central axis 124 of the light reflected from the reflector 130 may vary depending on the curvature of the surface of the reflector 130. have.
- the distance between the light source unit 120 and the reflector 130 may be determined in consideration of a safety distance according to eye-safety.
- the first interval between the light source unit 120 and the optical member 140 and the second interval between the optical member 140 and the reflector 130 may be different from each other.
- the first interval between the light source unit 120 and the optical member 140 may be smaller than the second interval between the optical member 140 and the reflector 130.
- first interval between the light source unit 120 and the optical member 140 and the second interval between the optical member 140 and the reflector 130 may be the same.
- the light source unit 120 may be at least one laser diode or a vertical cavity surface emitting laser (VCSEL).
- VCSEL vertical cavity surface emitting laser
- the light source unit 120 may be a laser light source having a high output of about 100 mW or more.
- the reflector 130 may be a total reflection mirror having a predetermined curvature, for example, may be a parabolic total reflection mirror.
- the reflector 130 may have a curvature on only part of the surface, or the entire surface may have curvature.
- the optical member 140 may be a collimating lens that converts light into parallel light.
- the optical member 140 may be disposed to face the light exit surface of the light source unit 120.
- FIG. 4A and 4B are plan views illustrating an array of light irradiation units according to FIG. 2, in which FIG. 4A is an integrated module and FIG. 4B is a detachable module.
- the light irradiation unit 100 including the light source unit 120 and the reflector 130 may be one, but in some cases, may be a plurality.
- a plurality of light source units 120 and a plurality of reflecting units 130 may be disposed on one substrate 110.
- the light source unit 120 may include first, second, and third light source units 120a, 120b, and 120c
- the reflector 130 may include first, second, and third reflector units 130a. , 130b, 130c).
- the 1st reflecting part 130a is arrange
- the 2nd reflecting part 130b is arrange
- the reflector 130c may be disposed in the light emission direction of the third light source 120c.
- the first light source part 120a and the second light source part 120b are disposed to have a first distance d1, and the second light source part 120b and the third light source part 120c have a second distance d2. Can be placed apart.
- first interval d1 and the second interval d2 may be the same as or different from each other in some cases.
- the first interval d1 and the second interval d2 may be controlled so that the light emitted from the light source units 120 adjacent to each other do not overlap each other.
- the light source 120 and the reflector 130 may be disposed on the plurality of substrates 110.
- the first light irradiation part is disposed on the first substrate 110a and the first light source part 120a and the first reflecting part 130a, and the second light irradiation part is on the second substrate 110b.
- 120b and the second reflector 130b may be disposed, and the third light emitter may include the third light source 120c and the third reflector 130c on the third substrate 110c.
- the 1st reflecting part 130a is arrange
- the 2nd reflecting part 130b is arrange
- the reflector 130c may be disposed in the light emission direction of the third light source 120c.
- the first, second, and third substrates 110a, 110b, and 110c may be spaced apart from each other by a predetermined distance.
- first light source unit 120a and the second light source unit 120b are disposed to have a first interval d1
- the second light source unit 120b and the third light source unit 120c have a second interval d2. Can be placed apart.
- first interval d1 and the second interval d2 may be the same as or different from each other in some cases.
- the first interval d1 and the second interval d2 may be controlled so that the light emitted from the light source units 120 adjacent to each other do not overlap each other.
- FIG. 5A and 5B are plan views illustrating an array of light irradiation units according to FIG. 3, in which FIG. 5A is an integrated module and FIG. 5B is a detachable module.
- the light irradiation unit 100 including the light source unit 120 and the reflective unit 130 may be one, but in some cases, may be a plurality of light irradiation units.
- a plurality of light sources 120, a plurality of reflectors 130, and a plurality of optical members 140 may be disposed on one substrate 110.
- the light source unit 120 may include first, second, and third light source units 120a, 120b, and 120c
- the reflector 130 may include first, second, and third reflector units 130a
- the optical member 140 may include first, second, and third optical members 140a, 140b, and 140c.
- the 1st reflecting part 130a and the 1st optical member 140a are arrange
- the second light source unit 120b may be disposed in the light exit direction, and the third reflector 130c and the third optical member 140c may be disposed in the light exit direction of the third light source unit 120c.
- the first light source part 120a and the second light source part 120b are disposed to have a first distance d1, and the second light source part 120b and the third light source part 120c have a second distance d2. Can be placed apart.
- first interval d1 and the second interval d2 may be the same as or different from each other in some cases.
- the first interval d1 and the second interval d2 may be controlled so that the light emitted from the light source units 120 adjacent to each other do not overlap each other.
- the light source 120, the reflector 130, and the optical member 140 may be disposed on the plurality of substrates 110.
- the first light irradiator includes a first light source 120a, a first reflector 130a, and a first optical member 140a disposed on the first substrate 110a
- the second light irradiator includes a second light emitter.
- the second light source unit 120b, the second reflecting unit 130b, and the second optical member 140b are disposed on the substrate 110b
- the third light irradiation unit is disposed on the third substrate 110c.
- the third reflecting unit 130c and the third optical member 140c may be disposed.
- the 1st reflecting part 130a and the 1st optical member 140a are arrange
- the second light source unit 120b may be disposed in the light exit direction, and the third reflector 130c and the third optical member 140c may be disposed in the light exit direction of the third light source unit 120c.
- the first, second, and third substrates 110a, 110b, and 110c may be spaced apart from each other by a predetermined distance.
- first light source unit 120a and the second light source unit 120b are disposed to have a first interval d1
- the second light source unit 120b and the third light source unit 120c have a second interval d2. Can be placed apart.
- first interval d1 and the second interval d2 may be the same as or different from each other in some cases.
- the first interval d1 and the second interval d2 may be controlled so that the light emitted from the light source units 120 adjacent to each other do not overlap each other.
- FIG. 6A and 6B are plan views showing the arrangement of the light irradiation part and the light receiving part.
- FIG. 6A is an integrated module
- FIG. 6B is a separate module.
- the depth image obtaining apparatus may be an integrated module in which the light irradiation unit 100 and the light receiving unit 200 are disposed on the same substrate.
- the light receiving unit 200 may be a separate module disposed on different substrates.
- the light irradiation unit 100, the light receiving unit 200, and the controller 300 may be disposed on the same substrate 500.
- the light irradiation unit 100 may be disposed on the substrate 110, the light source unit 120, the reflecting unit 130 and the optical member 140.
- the light receiver 200 and the controller 300 may be disposed at one side of the light irradiator 100.
- the separation type module may include a first separation module and a second separation module, as illustrated in FIG. 6B.
- the first separation module may include a light irradiation part 100 and a controller 300 on the first substrate 500a.
- the light emitting unit 200 may be disposed on the second substrate 500b in the second separation module.
- control unit 300 may control the light irradiation unit 100 and the light receiving unit 200, but the control unit 300 may drive the light irradiation unit 100 and the light receiving unit 200 simultaneously. They can also be driven at different times.
- the depth image obtaining apparatus may be manufactured as an integrated module in which the light irradiation unit 100 and the light receiving unit 200 are disposed together.
- the light irradiation unit 100 and the light receiving unit 200 may be It may also be manufactured as separate modules that are arranged separately.
- FIG. 7A and 7B illustrate a depth image obtaining apparatus mounted on a display apparatus.
- the depth image capturing apparatus 1 of the present invention may be applied to the display apparatus 2.
- the display device 2 may be applied to a mobile terminal as well as a fixed terminal such as a digital TV, a desktop computer, a digital signage, or the like.
- the depth image acquisition apparatus 1 may be an integrated module in which the light irradiation unit 100 and the light receiving unit 200 are disposed on the same substrate, or the light irradiation unit 100 and the light receiving unit 200 are disposed on different substrates. It may be a detachable module.
- the light irradiator 100, the light receiver 200, and the controller 300 may be disposed on the same substrate 500.
- the depth image capturing apparatus 1 of the integrated module may be mounted on the periphery of the display apparatus 2, and may be partially exposed to the outside from the display apparatus 2.
- the depth image obtaining apparatus 1 of the integrated module may be mounted on the periphery of the frame 20 except for the display panel 10 of the display device 2.
- the separation type module may include a first separation module and a second separation module.
- the first separation module the light irradiation unit 100 and the control unit 300 are disposed on the first substrate 500a, and the second separation module may be disposed.
- the light receiving unit 200 may be disposed on the second substrate 500b.
- a first separation module including the light irradiation unit 100 and the control unit 300 is disposed inside the display apparatus and includes a light receiving unit 200.
- the second separation module may be mounted to be exposed to the outside from the display device.
- the first separation module including the light irradiation unit 100 and the control unit 300 may be disposed behind the display panel 10 of the display device 2, and the second separation module may include the light receiving unit 200.
- the module may be arranged around the frame 20 of the display device 2.
- FIG. 8 is a diagram illustrating a depth image obtaining apparatus applied to a display apparatus having a large screen.
- the depth image acquisition device 1 of the present invention may be applied to a display device 2 using a large screen.
- the display device 2 using a large screen may include a digital signage or the like.
- the user may touch the large screen of the display device 2 or gesture through a certain distance. Get the information you need.
- the depth image obtaining apparatus of the present invention uses a high power light source without increasing the thickness and size, so that the depth image obtaining apparatus can be miniaturized and can accurately acquire a depth image of a user located at a long distance.
- the display device equipped with the depth image capturing apparatus of the present invention can accurately recognize a user's gesture, perform an accurate function, and deliver accurate information.
- 9A to 9D are exploded views illustrating a display apparatus using a depth image obtaining apparatus according to the present invention.
- the display apparatus includes a light irradiation unit 100, a light receiving unit 200, and a depth image acquisition device including a control unit 300, a display panel 10, and a display panel 10.
- the backlight unit 30 may be irradiated with light.
- the light irradiator 100 may be disposed in the backlight unit 30 to irradiate light to a predetermined subject, and the light receiver 200 may be disposed at the periphery of the display panel 10 to be reflected from the subject. The light may be received, and the controller 300 may control the light emitter 100 and the light receiver 200.
- the light irradiation unit 100 may include a light source unit that emits light in a first direction, and a reflection unit that reflects light emitted in a first direction from the light source unit in a second direction.
- the backlight unit 30 may include a light source module 32 including a substrate 32a, a plurality of light sources 32b disposed on the substrate 32a, and a diffuser plate disposed on the light source module 32. 34) and an optical member 36 disposed on the diffusion plate 34.
- a heat sink 40 may be disposed under the substrate 32a of the light source module 32.
- the light irradiation part 100 may be disposed inside the light source module 32 or may be disposed between the light source module 32 and the diffusion plate 34, and the diffusion plate 34 and the optical member 36 may be disposed in the light source module 32. It may be arranged in between.
- the light irradiator 100 may be disposed between the light sources 32b of the light source module 32.
- the light irradiation part 100 and the light source 32b may be disposed on the same substrate 32a.
- the light source of the light irradiation part 100 and the light source 32b of the display device may be mixed and disposed on the same substrate 32a.
- the heat dissipation plate 40 is disposed under the substrate 32a of the light source module 32, so that the heat dissipation of the light irradiating unit 100 of the depth image acquisition device and the light source 32b of the display device is performed by one heat dissipation plate 40. Can be used simultaneously.
- the light source 32b of the display device may be a white light source, and the light source of the light irradiation unit 100 may be an infrared light source.
- a color blocking filter for removing color wavelengths may be further disposed in the light source of the light irradiation part 100 which is an infrared light source.
- the light irradiator 100 may be disposed on one side of the light source module 32 and may be disposed to have a predetermined distance therebetween.
- the substrate on which the light irradiator 100 is disposed may be disposed at a predetermined distance from the substrate 32a of the light source module 100 in one direction.
- the light irradiation part 100 may be disposed between the light source module 32 and the diffusion plate 34.
- the light irradiation part 100 may be disposed between the diffusion plate 34 and the optical member 36.
- the light irradiation part 100 may be disposed between the optical member 36 and the display panel 10.
- the light irradiator 100 of the depth image obtaining apparatus may be precisely obtained from the depth image of the user located at a long distance by being disposed at various positions of the display apparatus.
- the display device using the depth image acquisition device of the present invention can accurately recognize a user's gesture, perform an accurate function, and deliver accurate information.
- FIG. 10 is a view illustrating an arrangement of a light irradiation part applied to a backlight unit of a display device according to the present invention.
- the display device 2 may be a mobile terminal as well as a fixed terminal such as a digital TV, a desktop computer, a digital signage, or the like.
- the light source module 32 of the backlight unit is located behind the display panel 10 of the display device 2.
- the light source module 32 of the backlight unit may include a substrate 32a and a plurality of light sources 32b arranged on the substrate 32a.
- the light irradiator 100 of the depth image obtaining apparatus may be located between light sources 32b adjacent to each other.
- the light irradiator 100 of the depth image capturing apparatus and the light source 32b of the backlight unit may be disposed on the same substrate 32a and alternately disposed in the horizontal direction or the column direction.
- the ratio of the number of the light irradiation units 100 and the number of the light sources 32b of the backlight unit may be 1: 1 to 1:50, but the present invention is not limited thereto.
- the light irradiator 100 of the depth image obtaining apparatus may be disposed in an area of the entire area of the substrate 32a of the backlight unit adjacent to the light receiving unit 200 of the depth image obtaining apparatus.
- the light receiver 200 of the depth image acquisition apparatus may be disposed around the frame 20 of the display apparatus 2.
- 11A and 11B are cross-sectional views taken along line II of FIG. 10.
- the light source module 32 of the backlight unit includes a plurality of light sources 32b arranged on the substrate 32a and a depth image acquisition device between light sources 32b adjacent to each other.
- the light irradiation unit 100 may be located.
- a color cut filter 102 may be disposed on the light irradiation part 100 of the depth image obtaining apparatus.
- the color blocking filter 102 may be positioned in the light exit direction of the light irradiation part 100.
- the color blocking filter 102 may be disposed away from the light irradiator 100 by a predetermined distance d.
- the distance between the color blocking filter 102 and the light irradiation unit 100 may be determined in consideration of the distance capable of completely blocking the light emitted from the light irradiation unit 100.
- the color blocking filter 102 may be disposed in contact with the light irradiation part 100.
- the color blocking filter 102 may remove light of the color appearing in the light in the infrared wavelength band.
- the light emitted from the light source 32b of the backlight unit and the light filtered by the color blocking filter 102 may both be white light.
- the color blocking filter 102 is not present, deterioration may appear in the image due to the infrared light emitted from the light irradiator of the depth image obtaining device on the display panel 10 of the display device 2.
- FIG. 12 is a block diagram illustrating a controller for controlling the backlight unit of the display device according to the present invention.
- the light source module 32 may include a light source of the light irradiator 100 of the depth image obtaining apparatus and a light source 32b of the backlight unit.
- the control unit 300 includes a first control unit 310 and a second control unit 320.
- the first control unit 310 controls the light source 32b of the backlight unit, and the second control unit 320. May control the light source and the light receiving unit 200 of the light irradiation unit 100.
- the first controller 310 controls the light source 32b of the backlight unit according to the received video signal
- the second controller 320 controls the light irradiator 100 and the light receiver to obtain a depth image.
- the 200 may be driven at the same time, or in some cases, may be driven at different times.
- the display apparatus of the present invention can precisely acquire a depth image of a user located at a long distance by controlling not only the light source module of the backlight unit but also the light irradiation unit of the depth image acquisition apparatus included in the backlight unit. .
- FIG. 13A and 13B illustrate an arrangement of a light irradiation part disposed in a backlight unit of a display device.
- the light irradiation unit 100 of the depth image obtaining apparatus may be disposed behind the display panel 10 of the display apparatus 2.
- the light receiver 200 of the depth image acquisition apparatus may be disposed around the frame 20 of the display apparatus 2.
- the light irradiator 100 of the depth image obtaining apparatus may be disposed adjacent to the light receiving unit 200 of the depth image obtaining apparatus.
- the plurality of individual modules may be arranged such that distances from the light receiving unit are equal to each other.
- the first light emitters and the light receivers 200 are spaced apart at a first interval d1
- the second light emitter and the light receiver 200 may be disposed apart from each other by the second interval d2
- the third light emitter and the light receiver 200 may be disposed apart from the third interval d3.
- the first interval d1, the second interval d2, and the third interval d3 may all be the same.
- the plurality of individual groups may be arranged such that the distance from the light receiving unit is equal to each other. have.
- the light irradiation unit 100 is a first group including four light irradiation units that are the first, second, third, and fourth light irradiation units, and the fifth, sixth, seventh, and eighth light irradiation units.
- the first group and the light receiving unit 200 are spaced apart at a fourth interval d4, and the second group and the light receiving unit 200 are spaced apart at a fifth interval d5.
- the fourth interval d4 and the fifth interval d5 may be equal to each other.
- the light irradiation part 100 may include a plurality of light source parts 120.
- the reason for making the interval between the light irradiation unit 100 and the light receiving unit 200 constant is when the distance between the light irradiation unit 100 and the light receiving unit 200 is different, on / off between the light irradiation units 100. This is because the distance from the subject cannot be calculated accurately due to the time difference.
- the interval between the light irradiation unit 100 and the light receiving unit 200 described above may be a distance between the light emitting surface of the light irradiation unit 100 and the light receiving surface of the light receiving unit 200.
- 14A and 14B illustrate an arrangement of a light irradiation part disposed in a frame of the display device.
- a frame 20 is disposed at the periphery of the display panel 10 of the display apparatus 2, except for an active region in which an image is displayed. All areas can be included.
- the light irradiator 100 of the depth image obtaining apparatus may be disposed in an area of the frame 20 of the display apparatus 2.
- the light receiver 200 of the depth image acquisition apparatus may be disposed around the frame 20 of the display apparatus 2.
- the light irradiator 100 of the depth image obtaining apparatus may be disposed in an area of the frame 20 closest to the light receiving unit 200 of the depth image obtaining apparatus.
- the reason for this is that when the distance between the light irradiation part 100 and the light receiving part 200 is close, the error for calculating the distance to the subject is small, so that error correction can be minimized.
- the plurality of individual modules may be disposed along the frame 20 of the display apparatus 2 at regular intervals. .
- the light emitter 100 may be disposed in an area of the frame 20 of the display apparatus 2 adjacent to the light receiver 200.
- the plurality of individual groups may move the frame 20 of the display apparatus 2. Can be arranged accordingly.
- the light irradiation unit 100 is a first group including four light irradiation units that are the first, second, third, and fourth light irradiation units, and the fifth, sixth, seventh, and eighth light irradiation units.
- the first group and the second group may be disposed in an area of the frame 20 of the display apparatus 2 adjacent to the light receiver 200.
- the light irradiation part 100 may include a plurality of light source parts 120.
- the depth image acquisition device and the display device using the same according to the present invention solve the eye-safety problem without increasing the thickness and size of the lighting module, Depth images can be obtained precisely.
- the depth image capturing apparatus and the display apparatus using the depth image obtaining apparatus according to the present invention are not limited to the configuration and method of the above-described embodiments, but the above embodiments may be modified in various ways so that various modifications can be made. Or some may be selectively combined.
- the present invention relates to a depth image acquisition device capable of acquiring a depth image of a subject located at a far distance and a display device using the same. Therefore, the present invention has industrial applicability.
Abstract
Description
Claims (20)
- 소정의 피사체로 광을 조사하는 광 조사부;상기 피사체로부터 반사되는 상기 광을 수광하는 수광부; 그리고,상기 광 조사부 및 수광부를 제어하는 제어부를 포함하고,상기 광 조사부는,상기 광을 제 1 방향으로 출사하는 광원부와,상기 광원부로부터 상기 제 1 방향으로 출사되는 광을 제 2 방향으로 반사시키는 반사부를 포함하는 것을 특징으로 하는 깊이 영상 획득 장치.
- 제 1 항에 있어서, 상기 제 1 방향으로 출사되는 광의 중심축과, 상기 제 2 방향으로 반사되는 광의 중심축은, 서로 수직한 것을 특징으로 하는 깊이 영상 획득 장치.
- 제 1 항에 있어서, 상기 광원부는, 적어도 하나의 레이저 다이오드 또는 수직 공진 표면광 레이저 광원 (VCSEL; Vertical Cavity Surface Emitting Laser)인 것을 특징으로 하는 깊이 영상 획득 장치.
- 제 1 항에 있어서, 상기 반사부는, 포물면 전반사 거울인 것을 특징으로 하는 깊이 영상 획득 장치.
- 제 1 항에 있어서, 상기 광원부와 상기 반사부는, 동일한 기판 위에 배치되고, 나란히 일렬로 배치되는 것을 특징으로 하는 깊이 영상 획득 장치.
- 제 1 항에 있어서, 상기 광 조사부는,상기 광원부와 상기 반사부 사이에 배치되고, 상기 광원부로부터 출사되는 광을 평행광으로 제공하는 광학 부재를 더 포함하는 것을 특징으로 하는 깊이 영상 획득 장치.
- 제 1 항에 있어서, 상기 광 조사부와 상기 수광부는, 동일한 기판 위에 배치되어 일체형 모듈로 구성되는 것을 특징으로 하는 깊이 영상 획득 장치.
- 제 7 항에 있어서, 상기 광 조사부와 수광부를 포함하는 일체형 모듈은, 디스플레이 장치에 장착되고, 상기 디스플레이 장치로부터 외부에 노출되는 것을 특징으로 하는 깊이 영상 획득 장치.
- 제 1 항에 있어서, 상기 광 조사부는, 제 1 기판 위에 배치되어 제 1 분리 모듈로 구성되고, 상기 수광부는, 제 2 기판 위에 배치되어 제 2 분리 모듈로 구성되는 것을 특징으로 하는 깊이 영상 획득 장치.
- 제 9 항에 있어서, 상기 광 조사부를 포함하는 제 1 분리 모듈과, 상기 수광부를 포함하는 제 2 분리 모듈은, 디스플레이 장치에 장착되고,상기 제 1 분리 모듈은, 상기 디스플레이 장치의 내부에 배치되고,상기 제 2 분리 모듈은, 상기 디스플레이 장치로부터 외부에 노출되는 것을 특징으로 하는 깊이 영상 획득 장치.
- 제 10 항에 있어서, 상기 제 1 분리 모듈은, 상기 디스플레이 장치의 디스플레이 패널 후방에 배치되는 것을 특징으로 하는 깊이 영상 획득 장치.
- 광 조사부와 수광부를 포함하는 깊이 영상 획득 장치를 이용한 디스플레이 장치에 있어서,디스플레이 패널;상기 디스플레이 패널로 광을 조사하는 백라이트 유닛;상기 백라이트 유닛 내에 배치되어, 소정의 피사체로 광을 조사하는 광 조사부;상기 디스플레이 패널의 주변부에 배치되어, 상기 피사체로부터 반사되는 광을 수광하는 수광부; 그리고,상기 광 조사부 및 수광부를 제어하는 제어부를 포함하며,상기 광 조사부는,상기 광을 제 1 방향으로 출사하는 광원부와,상기 광원부로부터 상기 제 1 방향으로 출사되는 광을 제 2 방향으로 반사시키는 반사부를 포함하는 것을 특징으로 하는 디스플레이 장치.
- 제 12 항에 있어서, 상기 백라이트 유닛은,기판과, 기판 위에 배치되는 다수의 광원들을 포함하는 광원 모듈;상기 광원 모듈의 상부에 배치되는 확산판;상기 확산판 상부에 배치되는 광학 부재를 포함하고,상기 광 조사부는,상기 광원 모듈 내, 상기 광원 모듈과 확산판 사이, 상기 확산판과 광학 부재 사이 중, 적어도 어느 한 곳에 배치되는 것을 특징으로 하는 디스플레이 장치.
- 제 13 항에 있어서, 상기 광 조사부는, 상기 광원 모듈의 광원들 사이에 배치되는 것을 특징으로 하는 디스플레이 장치.
- 제 14 항에 있어서, 상기 광 조사부와 상기 광원은, 동일한 기판 위에 배치되는 것을 특징으로 하는 디스플레이 장치.
- 제 13 항에 있어서, 상기 광원 모듈의 기판 하부에는 방열판이 배치되는 것을 특징으로 하는 디스플레이 장치.
- 제 13 항에 있어서, 상기 광 조사부는, 상기 광원 모듈의 일측에 배치되고, 소정 간격을 갖는 것을 특징으로 하는 디스플레이 장치.
- 제 12 항에 있어서, 상기 광 조사부의 상부에는, 컬러 차단 필터가 배치되는 것을 특징으로 하는 디스플레이 장치.
- 제 12 항에 있어서, 상기 광 조사부는, 다수의 개별 모듈들로 배치되거나, 또는 다수의 개별 모듈을 포함하는 다수의 그룹 모듈들로 배치되며,상기 다수의 개별 모듈들은, 상기 수광부와의 거리가 서로 동일하도록 배치되고,상기 다수의 개별 그룹들은, 상기 수광부와의 거리가 서로 동일하도록 배치되는 것을 특징으로 하는 디스플레이 장치.
- 제 12 항에 있어서, 상기 광 조사부는, 상기 수광부에 인접하도록, 상기 디스플레이 패널의 주변부에 배치되는 것을 특징으로 하는 디스플레이 장치.
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US14/778,002 US20160069999A1 (en) | 2013-03-25 | 2014-03-05 | Depth image obtaining device and display device using same |
KR1020157024355A KR101695821B1 (ko) | 2013-03-25 | 2014-03-05 | 깊이 영상 획득 장치 및 그를 이용한 디스플레이 장치 |
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US10048498B2 (en) | 2016-03-25 | 2018-08-14 | Microsoft Technology Licensing, Llc | Illumination module |
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CN108958689A (zh) * | 2018-07-27 | 2018-12-07 | 广州视源电子科技股份有限公司 | 显示屏状态控制系统、状态控制方法、装置和存储介质 |
US11181775B2 (en) | 2018-09-11 | 2021-11-23 | Samsung Electronics Co., Ltd. | Illumination device and electronic apparatus including the same |
KR102630250B1 (ko) * | 2018-10-05 | 2024-01-29 | 엘지이노텍 주식회사 | 깊이 정보를 획득하는 방법 및 카메라 모듈 |
CN110166761B (zh) * | 2019-01-17 | 2021-08-13 | 深圳市光鉴科技有限公司 | 一种具有3d摄像模组的显示装置和电子设备 |
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KR20120031886A (ko) * | 2010-09-27 | 2012-04-04 | 소니 주식회사 | 광원 디바이스 및 입체 표시 장치 |
KR20120056441A (ko) * | 2010-11-25 | 2012-06-04 | 은남표 | 적외선 레이저 프로젝션 디스플레이를 이용한 3차원 깊이 카메라 |
KR20120063943A (ko) * | 2010-12-08 | 2012-06-18 | 엘지디스플레이 주식회사 | 백라이트 유닛 및 이를 포함하는 액정표시장치모듈 |
KR20130001762A (ko) * | 2011-06-28 | 2013-01-07 | 삼성전자주식회사 | 영상 생성 장치 및 방법 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10003726B2 (en) | 2016-03-25 | 2018-06-19 | Microsoft Technology Licensing, Llc | Illumination module for near eye-to-eye display system |
US10048498B2 (en) | 2016-03-25 | 2018-08-14 | Microsoft Technology Licensing, Llc | Illumination module |
Also Published As
Publication number | Publication date |
---|---|
US20160069999A1 (en) | 2016-03-10 |
KR20150139831A (ko) | 2015-12-14 |
KR101695821B1 (ko) | 2017-01-13 |
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