WO2022257023A1 - Module électroluminescent, module de caméra et dispositif électronique - Google Patents

Module électroluminescent, module de caméra et dispositif électronique Download PDF

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Publication number
WO2022257023A1
WO2022257023A1 PCT/CN2021/099005 CN2021099005W WO2022257023A1 WO 2022257023 A1 WO2022257023 A1 WO 2022257023A1 CN 2021099005 W CN2021099005 W CN 2021099005W WO 2022257023 A1 WO2022257023 A1 WO 2022257023A1
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Prior art keywords
basic
speckle pattern
light
basic speckle
level
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PCT/CN2021/099005
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English (en)
Chinese (zh)
Inventor
陈华
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深圳市汇顶科技股份有限公司
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Priority to PCT/CN2021/099005 priority Critical patent/WO2022257023A1/fr
Priority to CN202180004812.1A priority patent/CN115735151A/zh
Publication of WO2022257023A1 publication Critical patent/WO2022257023A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • 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

Definitions

  • the present application relates to depth perception technology, in particular to a light emitting module, a camera module and electronic equipment.
  • the light emitting module is usually used to emit light to the target object to form a speckle pattern on the target object, and the light receiving module receives the light reflected back by the target object, and according to the deformation of the speckle pattern or The phase change of the optical signal is used to extract the depth information of the target object.
  • the brightness of the light spot formed by the light emitted by the conventional light emitting module is evenly distributed, but due to the inherent relative illumination (Relative Illumination, RI) distribution problem of the lens (Lens) of the light receiving module, the edge of the light spot will be darker , the signal-to-noise ratio is low, the imaging accuracy is poor, and the depth information is inaccurate.
  • RI relative Illumination
  • the present application provides a light emitting module, a camera module and electronic equipment, which improve the imaging precision and the accuracy of depth information.
  • the embodiment of the present application provides a light emitting module, the light emitting module is matched with the light receiving module, and the relative illuminance of the lens of the light receiving module is 40%-60%;
  • the light emitting module includes: a light source and a light beam splitter;
  • the light source is used to emit light beams forming a basic speckle pattern, the luminous power of multiple light-emitting points of the light source is the same, and the number of light spots of the basic speckle pattern is the same as the number of light-emitting points of the light source;
  • the optical beam splitter is used to split the beam emitted by the light source to form a beam of a global speckle pattern
  • the global speckle pattern includes a plurality of the basic speckle patterns distributed in an array
  • the The multiple basic speckle patterns of the global speckle pattern include at least one central position basic speckle pattern and at least one level of peripheral basic speckle pattern
  • the central position basic speckle pattern is located at the global speckle pattern
  • the at least one peripheral basic speckle pattern includes a plurality of basic speckle patterns located on the periphery of the central position basic speckle pattern, wherein the beam energy of the central position basic speckle pattern is lower than the The beam energy of at least one level of peripheral basic speckle pattern.
  • the plurality of basic speckle patterns of the global speckle pattern are distributed in an n*n rectangular array, where n is a positive integer greater than or equal to 3.
  • the number of basic speckle patterns at the central position is one, and the at least one level of peripheral basic speckle patterns includes one level of peripheral basic speckle patterns, and the one The level peripheral basic speckle pattern includes 8 basic speckle patterns surrounding the periphery of the central position basic speckle pattern.
  • the number of basic speckle patterns at the central position is four, and the at least one level of peripheral basic speckle patterns includes one level of peripheral basic speckle patterns, and the one The level peripheral basic speckle patterns include 12 basic speckle patterns surrounding the periphery of the central position basic speckle pattern.
  • the number of the central position basic speckle pattern is 1, and the at least one level of peripheral basic speckle patterns includes two levels of peripheral basic speckle patterns, and the two The first-level peripheral basic speckle pattern in the peripheral basic speckle pattern includes 8 basic speckle patterns surrounding the periphery of the central position basic speckle pattern, and the second level of the two-level peripheral basic speckle pattern
  • the peripheral basic speckle patterns include 16 basic speckle patterns surrounding the periphery of the first-level peripheral basic speckle patterns.
  • the at least one level of peripheral basic speckle patterns includes more than two levels of peripheral basic speckle patterns, and the peripheral basic speckle patterns at the same level have the same beam energy, and the peripheral basic speckle patterns between different levels The beam energy of the pattern increases sequentially along the direction outward from the center of the global speckle pattern.
  • the distances from the peripheral basic speckle patterns of the same level to the central basic speckle pattern are substantially the same.
  • the peripheral basic speckle pattern of relatively high energy level surrounds the periphery of the peripheral basic speckle pattern of relatively low energy level.
  • the beam energy of the basic speckle pattern at the vertex of the global speckle pattern is higher than the beam energy of the basic speckle pattern on the four sides of the global speckle pattern except the vertex.
  • the beam energy of the basic speckle pattern at the apex is higher than that of other beams at the four sides except the apex.
  • the beam energy of the basic speckle pattern is the sum of the beam energy of each light spot in the basic speckle pattern.
  • it also includes: a collimating mirror arranged between the light source and the beam splitter;
  • the collimating mirror is used for collimating the light beam emitted by the light source.
  • a camera module including:
  • the light emitting module is the light emitting module described in the first aspect and its implementation; the relative illuminance of the lens of the light receiving module is 40%-60%;
  • the light emitting module is used to emit a light beam to a target object
  • the light receiving module is used to receive the light beam reflected by the target object to determine the depth of the target object or reconstruct the three-dimensional image of the target object.
  • an embodiment of the present application provides an electronic device, which is characterized by comprising the camera module described in the second aspect and its implementation manner.
  • the application provides a light emitting module, a camera module and electronic equipment.
  • the light emitting module is matched with the light receiving module.
  • the relative illuminance of the lens of the light receiving module is 40%-60%.
  • the light emitting module The group includes: a light source and a light beam splitter; the light source is used to emit light beams forming a basic speckle pattern, the luminous power of multiple light-emitting points of the light source is the same, and the number of light spots of the basic speckle pattern is the same as the number of light-emitting points of the light source;
  • the beam splitter is used to split the light beam emitted by the light source to form the beam of the global speckle pattern.
  • the global speckle pattern includes a plurality of basic speckle patterns distributed in an array, wherein the multiple basic speckle patterns of the global speckle pattern Including at least one basic speckle pattern at a central position, and at least one level of peripheral basic speckle pattern, the central position basic speckle pattern is located in the central area of the global speckle pattern, at least one level of peripheral basic speckle pattern includes a plurality of central position
  • the beam energy of the basic speckle pattern at the central position is lower than the beam energy of at least one peripheral basic speckle pattern, that is, in the energy of the beam emitted by the light emitting module
  • the energy of the light beam forming the basic speckle pattern in the center is relatively low, while the energy of the light beams corresponding to the other basic speckle patterns is relatively high, which can make up for the lens of the light receiving module used in conjunction with this light emitting module.
  • the problem of relative illumination distribution can improve the imaging precision and the accuracy of depth information.
  • Fig. 1 is a schematic structural diagram of a light emitting module in the prior art
  • FIG. 2 is a schematic diagram of an emission light field of a light emission module in the prior art
  • FIG. 3 is a schematic diagram of a relative illuminance distribution of a camera module in the prior art
  • FIG. 4 is a first schematic diagram of beam energy distribution of a light emitting module provided by an embodiment of the present application
  • FIG. 5 is a second schematic diagram of beam energy distribution of a light emitting module provided by an embodiment of the present application.
  • Fig. 6 is a schematic diagram 3 of beam energy distribution of a light emitting module provided in an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a relative illuminance distribution of a camera module provided in an embodiment of the present application.
  • Fig. 8 is a comparison diagram of relative illuminance distribution curves between the camera module provided by the embodiment of the present application and the camera module of the prior art;
  • FIG. 9 is a comparison diagram of the probability density curves of spot energy distribution on the imaging surface of the camera module provided by the embodiment of the present application and the camera module of the prior art.
  • the light emitting module is usually used to emit light beams to the target object.
  • the light emitting module usually includes some optical components, such as optical beam splitters, which can usually use diffractive optics Components (Diffractive Optical Elements, DOE) as a beam splitter.
  • optical beam splitters can usually use diffractive optics Components (Diffractive Optical Elements, DOE) as a beam splitter.
  • DOE diffractive Optical Elements
  • the light emitting module emits light beams to the target object, forming a speckle pattern on the target object, and the structure of the light receiving module passes through The beam reflected by the target object is used to determine the depth of the target object.
  • a light emitting module that emits speckle light may be referred to as a speckle projector.
  • the beam emitted by the light source can form a basic speckle pattern
  • the DOE can split the beam emitted by the light source, thereby replicating the basic speckle pattern to form a global speckle pattern.
  • the DOE 11 splits the light emitted by the light source 10 to form a global speckle pattern in a 3*3 array style, and the pattern of a block in the array is the basic speckle pattern , where the basic speckle pattern is composed of discretely distributed light spots, the number of light spots in each basic speckle pattern is consistent with the number of light-emitting points of the light source 10, and the light-emitting power of each light-emitting point of the light source 10 is the same, that is, each light spot in the basic speckle pattern of the same brightness.
  • the basic speckle pattern of each block in the global speckle pattern projected by the light emitting module is the same, and the brightness of the basic speckle pattern of each block is also the same, that is, the beam energy emitted by the light emitting module is evenly distributed, The beam energy of the basic speckle pattern of each block is the same.
  • a block in Figure 2 is a basic speckle pattern, and the basic speckle pattern of each block is the same, forming the basic speckle pattern of each block
  • the energy of the beam of the speckle pattern is uniform, and the brightness of the basic speckle pattern of each block is also uniform.
  • FIG. 2 only schematically shows the light spots in each basic speckle pattern in the global speckle pattern, and it should be understood that the light spots in each basic speckle pattern are the same.
  • the lens (Lens) of the light-receiving module will have an inherent relative illuminance distribution problem, usually, the relative illuminance of the lens of the light-receiving module is 40%-60%, as shown in Figure 3, the relative illuminance of the center is high , the farther away from the center, the lower the relative illuminance, that is, the light beam received by the light receiving module will be attenuated by the lens, resulting in the spot energy distribution obtained by actual imaging being equal to the relative illuminance distribution of the lens itself, that is, the energy of the central spot is higher than that of the edge spot
  • the maximum energy difference may be about 1 times, so that the imaging result shows a distribution with high brightness in the center and lower brightness as it is farther away from the center. The imaging accuracy is poor and the depth information is inaccurate.
  • the energy of the light beam at the center of the lens is low, and the energy of the light beam at the edge is high.
  • the relative illuminance distribution problem of the lens of the light receiving module can be compensated, thereby improving the imaging precision and the accuracy of the depth information.
  • the embodiment of the present application provides a light emitting module, the light emitting module is matched with the light receiving module, and the relative illuminance of the lens of the light receiving module is 40%-60%.
  • the light emitting module includes: a light source and a light beam splitter.
  • the light source is used to emit light beams forming the basic speckle pattern, the luminous power of multiple light-emitting points of the light source is the same, and the number of light spots of the basic speckle pattern is the same as the number of light-emitting points of the light source;
  • the beam is split to form a beam of a global speckle pattern, and the global speckle pattern includes a plurality of basic speckle patterns distributed in an array, wherein the plurality of basic speckle patterns of the global speckle pattern include at least one central position basic speckle pattern a speckle pattern, and at least one level of peripheral basic speckle pattern, the basic speckle pattern at the central position is located in the central area of the global speckle pattern, and the at least one level of peripheral basic speckle pattern includes a plurality of The basic speckle pattern, wherein the beam energy of the central basic speckle pattern is lower than the beam energy of at least one peripheral basic speckle pattern.
  • the global speckle pattern includes a 3*3 basic speckle pattern as an example for illustration.
  • a block in the figure represents a basic speckle pattern, and the basic speckle pattern included in the global speckle pattern Quantity is the number of blocks shown in the figure.
  • the light spots of the basic speckle pattern are not specifically shown in the figure, and it should be understood that each block contains the basic speckle pattern.
  • the beam energy corresponding to the basic speckle pattern is the sum of the beam energy corresponding to each light spot in the basic speckle pattern.
  • the specific pattern of the basic speckle pattern such as the size and spacing of the light spots, is not limited, and the light source can be set according to actual needs to obtain the required basic speckle pattern.
  • the type of light source is not limited either.
  • the light source can be an infrared light source, a near-infrared light source, etc.
  • the light source can be a vertical cavity surface emitting laser (Vertical-Cavity Surface-Emitting Laser, VCSEL) array .
  • VCSEL Vertical-Cavity Surface-Emitting Laser
  • the basic speckle pattern numbered 405 is located in the central area of the global speckle pattern, that is, the basic speckle pattern numbered 405 is a basic speckle pattern at the central position, and eight basic speckle patterns surrounding the basic speckle pattern at the central position
  • the patterns are the first-level peripheral basic speckle patterns, and the beam energy of each basic speckle pattern in this first-level peripheral basic speckle pattern is higher than that of the central position basic speckle pattern numbered 405 beam energy.
  • the light emitting module emits into the light beam on the current object, and the energy of the light beam in the central area is low, The energy of the beam at the edge is high, and after the beam is reflected by the target object, the same is true for the beam received by the light receiving module, that is, the energy of the beam in the center area is low, and the energy of the beam at the edge is high.
  • the spot energy distribution obtained by actual imaging will be more uniform, so that the relative illuminance distribution of the lens of the light receiving module can be compensated, and the brightness distribution of the imaging result is uniform, which improves the imaging accuracy and the accuracy of the depth information. .
  • the structure of the driver chip part of the light source is relatively simple (for example, all light-emitting points can have a common cathode or common anode), so that it can be realized by using a common public chip. Reduce the customization of chips, which can reduce costs.
  • the beam splitter is used to split the light beam emitted by the light source, so as to replicate the basic speckle pattern formed by the light beam emitted by the light source to obtain the global speckle pattern.
  • the distribution of multiple basic speckle patterns in the global speckle pattern can be determined by the structure of the optical beam splitter, and can be selected and set according to needs in practical applications.
  • multiple basic speckle patterns in the global speckle pattern are distributed in an n*n rectangular array as an example for illustration, n is a positive integer greater than or equal to 3, and on this basis, the light
  • the energy distribution of the light beam emitted by the emission module is further illustrated as an example.
  • the beam energy of the basic speckle pattern at the central position is the lowest.
  • the beam energy of each peripheral basic speckle pattern in at least one level of peripheral basic speckle patterns is the same.
  • the beam energy of the peripheral basic speckle patterns at the same level is the same, and the peripheral basic speckle patterns between different levels The beam energy of the speckle pattern increases sequentially along the direction outward from the center of the global speckle pattern.
  • the peripheral basic speckle pattern of the global speckle pattern includes two or more levels of peripheral basic speckle patterns, optionally, the distances from the peripheral basic speckle patterns of the same level to the center basic speckle pattern are basically the same , the peripheral basic speckle pattern of relatively high energy level surrounds the periphery of the peripheral basic speckle pattern of relatively low energy level.
  • a basic speckle pattern of 5*5 is used as an example.
  • the basic speckle patterns in FIG. 5 are numbered 501-525.
  • the basic speckle pattern numbered 513 is a central position basic speckle pattern, and among the global speckle patterns, the light beam of the central position basic speckle pattern numbered 513 has the lowest energy.
  • the basic speckle patterns in the other 24 blocks except No. 513 are at least one level of peripheral basic speckle patterns, and the beam energy of each basic speckle pattern in at least one level of peripheral basic speckle patterns is higher than that of the center of No. 513 Position the beam energy of the underlying speckle pattern.
  • other basic speckle patterns other than number 513 can be divided into two levels of peripheral basic speckle patterns, and the eight numbers 507-509, 512, 514, and 517-519 surrounding the periphery of the basic speckle pattern at the central position
  • the first basic speckle pattern is the first-level peripheral basic speckle pattern
  • the 16 basic speckle patterns numbered 501-506, 510-511, 515-516, and 520-525 surround the first-level peripheral basic speckle pattern
  • the pattern is the second level.
  • the beam energy of the basic speckle pattern at the central position is the lowest, the beam energy of each basic speckle pattern in the second-level peripheral basic speckle pattern is the highest, and the beam energy of each basic speckle pattern in the first-level peripheral basic speckle pattern is between the center Position between the base speckle pattern and the second-level peripheral base speckle pattern.
  • the energy distribution of the light beam emitted by the light emitting module can also consider that the energy distribution of the basic speckle pattern corresponding to the block where the vertex of the global speckle pattern is located is different from the energy distribution of the basic speckle pattern corresponding to the block where the four sides are located. , an example is given below.
  • the beam energy of the basic speckle pattern of the block where each vertex of the global speckle pattern is located is higher than the beam energy of the basic speckle pattern of each block on the four sides of the global speckle pattern except the vertex .
  • the beam energy of the basic speckle pattern at the center of number 405 is the lowest, and the beam energy of each basic speckle pattern in the peripheral basic speckle patterns of numbers 401-404 and 406-409 on the periphery of number 405 is higher than The beam energy of the basic speckle pattern at the center position of number 405.
  • the basic speckle patterns of the block where the vertices of the global speckle pattern are located are numbered 401, 403, 407 and 409.
  • the basic speckle patterns of blocks other than vertices on the four sides of the global speckle pattern are the 4 basic speckle patterns numbered 402 , 404 , 606 and 608 .
  • the beam energy of each of the four basic speckle patterns numbered 401, 403, 407, and 409 is higher than the beam energy of each of the four basic speckle patterns numbered 402, 404, 606, and 608 energy.
  • the basic speckle pattern numbered 513 is a basic speckle pattern at the central position, and the eight basic speckle patterns with numbers 507-509, 512, 514, and 517-519 surrounding the basic speckle pattern at the central position
  • These 16 basic speckle patterns with numbers 501-506, 510-511, 515-516, and 520-525 surrounding the first-level peripheral basic speckle patterns are the second-level .
  • the beam energy of the basic speckle pattern at the central position is the lowest, the beam energy of each basic speckle pattern in the second-level peripheral basic speckle pattern is the highest, and the beam energy of each basic speckle pattern in the first-level peripheral basic speckle pattern is between the center Position between the base speckle pattern and the second-level peripheral base speckle pattern.
  • the beam energy of each of the four basic speckle patterns of the block numbers 501, 505, 521, and 525 where the vertices of the global speckle pattern are located is higher than the four sides of the global speckle pattern except for the vertices.
  • the beam energy of the basic speckle pattern at the vertex is higher than that of the basic speckle pattern at the four sides except the vertex. The beam energy of the speckle pattern.
  • the beam energy of each of the four basic speckle patterns numbered 501, 505, 521 and 525 at the vertices of this level is higher than that at the Beam energy of each of the 12 basic speckle patterns numbered 502-504, 506, 510-511, 515-516, 520, 522-525 on the four sides of this level except for the vertices.
  • the beam energy of each of the four basic speckle patterns numbered 501, 503, 507, and 509 at the vertices of this level is higher than that of the four sides at this level Beam energy of each basic speckle pattern among the four basic speckle patterns numbered 504, 504, 506 and 508 except the vertices.
  • the energies of the light beams corresponding to the basic speckle patterns on mutually perpendicular sides may also be different.
  • the number of rows and columns of the blocks of the basic speckle pattern in the global speckle pattern is an odd number for example, and the example will be given below by taking the number of rows and columns of the blocks of the basic speckle pattern as an even number.
  • the global speckle pattern includes a 4*4 basic speckle pattern as an example.
  • the 4*4 basic speckle pattern in FIG. 6 is numbered 601-616 as shown in the figure.
  • the four basic speckle patterns numbered 606-607 and 610-611 are the basic speckle patterns at the center
  • the 12 basic speckle patterns numbered 601-605, 608-609, and 612-606 are the first-level peripheral basic speckle patterns. spotted pattern.
  • the distances from the peripheral basic speckle patterns of the same level to the central basic speckle pattern are basically the same.
  • the beam energy of each of the four basic speckle patterns numbered 606-607, 610-611 is lower than that of each of the 12 basic speckle patterns numbered 601-605, 608-609, and 612-606 Patterned beam energy.
  • the beam energy of each of the four basic speckle patterns numbered 601, 604, 613, and 616 at the vertices of the global speckle pattern is higher than that of the four sides of the global speckle pattern except for the vertices Beam energy of each basic speckle pattern in the 8 basic speckle patterns of block numbers 602-603, 605, 608-609, 612, 614-615.
  • the light emitting module provided in the embodiments of the present application may include not only the light source and the beam splitter, but also a collimating mirror arranged between the light source and the beam splitter.
  • the light source is used to emit the light beam forming the basic speckle pattern;
  • the collimator is used to collimate the light beam emitted by the light source;
  • the optical beam splitter is used to split the collimated light beam to form global speckle
  • the global speckle pattern includes a plurality of basic speckle patterns distributed in an array, wherein the multiple basic speckle patterns of the global speckle pattern include at least one basic speckle pattern at a central position, and at least one level of peripheral basic speckle patterns.
  • the speckle pattern, the basic speckle pattern at the central position is located in the central area of the global speckle pattern, at least one level of the peripheral basic speckle pattern includes a plurality of basic speckle patterns located at the periphery of the basic speckle pattern at the central position, the basic speckle pattern at the central position
  • the beam energy of the pattern is lower than the beam energy of at least one level of peripheral base speckle pattern.
  • the light emitting module further includes a ceramic substrate, and the light source, collimating mirror and light beam splitter are sequentially arranged on the ceramic substrate.
  • the energy distribution of the split beam emitted by the light emitting module in this embodiment is similar to that of the foregoing embodiment, and will not be repeated here.
  • the embodiment of the present application also provides a camera module, which includes: a light emitting module and a light receiving module.
  • the light emitting module is the light emitting module in any of the foregoing embodiments.
  • the light emitting module is used to emit light beams to target objects.
  • the light receiving module is used to receive the light beam reflected by the target object to determine the depth of the target object or reconstruct the three-dimensional image of the target object.
  • the lens in the light receiving module has an inherent relative illuminance distribution problem as shown in FIG. 3 , for example, the relative illuminance of the lens of the light receiving module is 40%-60%.
  • the relative illuminance of the lens of the light receiving module is 40%-60%.
  • the energy of the light beam that forms the basic speckle pattern in the center is relatively low in the light beam emitted by the light emitting module, other The beam energy of each basic speckle pattern is relatively high. In this way, after being reflected by the target object, the energy of the beam at the center of the lens in the beam received by the light receiving module is low, and the energy of the beam at the edge is relatively high.
  • the beam passing through the light After the lens of the receiving module is attenuated the spot energy distribution obtained in the actual imaging will be more uniform, which realizes the compensation for the relative illumination problem of the lens of the light receiving module, thereby improving the imaging precision and the accuracy of the depth information.
  • Fig. 7 illustrates the illuminance distribution of the imaging surface of the light receiving module under the situation of the light emitting module provided by the present application in real time.
  • the illuminance distribution is shown in Fig. 3
  • the smooth transition shown becomes a block-block transition. After the energy in the center block decays, it is raised again in the edge blocks, and then starts to decay from a higher point.
  • Figure 8 illustrates the comparison of the relative illuminance distribution curve 1 of the camera module using the light emitting module of the embodiment of the present application and the relative illuminance distribution curve 2 of the camera module using the light emitting module of the prior art, where the horizontal The axis represents the distance from the center, and the vertical axis represents the relative illuminance. It can be seen that the relative illuminance distribution curve 1 of the camera module adopting the light emitting module of the embodiment of the present application is significantly improved, that is, the brightness difference between the edge and the central area of the imaging surface is reduced.
  • the horizontal axis represents the normalized value of the gray value of the light spot
  • the vertical axis represents the probability density
  • the spot energy distribution probability density curve 3 of the imaging surface of the camera module adopting the light emitting module of the embodiment of the present application is a relatively narrower normal partial curve, that is, using the light emitting module of the embodiment of the present application
  • the light spot energy distribution of the imaging surface of the camera module of the transmitting module is more uniform, so that the imaging precision is higher and the depth information is more accurate.
  • An embodiment of the present application further provides an electronic device, which includes the camera module in the foregoing embodiments.
  • the electronic device can be a camera, a mobile phone, a tablet computer, etc., and the electronic device can extract depth information of the target object through the camera module, and reconstruct a three-dimensional image of the target object.
  • the aforementioned program can be stored in a computer-readable storage medium.
  • the program executes the steps including the above-mentioned method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

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Abstract

La présente demande concerne un module électroluminescent, un module de caméra et un dispositif électronique. Le module électroluminescent comprend une source de lumière et un diviseur de faisceau de lumière ; la source de lumière est utilisée pour émettre un faisceau de lumière formant des motifs de granularité de base ; le diviseur de faisceau de lumière est utilisé pour diviser le faisceau de lumière émis par la source de lumière pour former un faisceau de lumière d'un motif de granularité globale ; le motif de granularité globale comprend une pluralité de motifs de granularité de base répartis dans un réseau ; la pluralité de motifs de granularité de base du motif de granularité globale comprenant au moins un motif de granularité de base de position centrale et au moins un motif de granularité de base périphérique primaire ; le motif de granularité de base de position centrale est situé dans la zone centrale du motif de granularité global ; le ou les motifs de granularité de base périphérique primaire comprennent une pluralité de motifs de granularité de base situés sur la périphérie du motif de granularité de base de position centrale ; et l'énergie de faisceau de lumière du motif de granularité de base de position centrale est inférieure à l'énergie de faisceau de lumière du ou des motifs de granularité de base périphérique primaire. Par conséquent, la précision d'imagerie est améliorée et la précision des informations de profondeur est améliorée.
PCT/CN2021/099005 2021-06-08 2021-06-08 Module électroluminescent, module de caméra et dispositif électronique WO2022257023A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/CN2021/099005 WO2022257023A1 (fr) 2021-06-08 2021-06-08 Module électroluminescent, module de caméra et dispositif électronique
CN202180004812.1A CN115735151A (zh) 2021-06-08 2021-06-08 光发射模组、摄像模组及电子设备

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PCT/CN2021/099005 WO2022257023A1 (fr) 2021-06-08 2021-06-08 Module électroluminescent, module de caméra et dispositif électronique

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WO2022257023A1 true WO2022257023A1 (fr) 2022-12-15

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