CN115236917A - 3D imaging device and electronic equipment - Google Patents
3D imaging device and electronic equipment Download PDFInfo
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- CN115236917A CN115236917A CN202210847957.4A CN202210847957A CN115236917A CN 115236917 A CN115236917 A CN 115236917A CN 202210847957 A CN202210847957 A CN 202210847957A CN 115236917 A CN115236917 A CN 115236917A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/2433—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring outlines by shadow casting
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Abstract
A 3D imaging apparatus and an electronic device, the 3D imaging apparatus comprising: a light source screen adapted to display a plurality of preset patterns to generate imaging light; the imaging light is reflected by a target to be imaged to form reflected light; the imaging module collects the reflected light to perform 3D imaging on the target to be imaged; wherein, the light source screen includes: an array of point light sources on the substrate, each column of point light sources comprising: a plurality of point light source groups, the point light source groups comprising: at least 1 point light source, switch device not set up in the point light source. According to the technical scheme, line-by-line scanning is not needed, and the switching speed of the preset patterns can be greatly increased; and the point light source without the switch device is directly connected into the circuit through the metal wire, so that the resistance can be effectively reduced, the current can be improved, and the luminous intensity of the point light source can be effectively improved.
Description
Technical Field
The present invention relates to the field of imaging, and in particular, to a 3D imaging apparatus and an electronic device.
Background
In order to improve the imaging quality and to achieve a more precise imaging result, overall information or professional relevant data of a 3D stereoscopic object can be acquired, preferably in a 3D scanning manner, to obtain a sharp 3D image.
In 3D imaging technology, 3D structured light is a relatively sought after direction in recent years for stereoscopic image processing. When the two-dimensional structured light pattern is projected on the surface of an object, 3D profile measurement of the target object can be realized without scanning, and the measurement speed is high. In distinction to binocular stereo vision and Time of flight (TOF), the 3D structured light depth imaging apparatus includes an optical projector 11, an optical camera 12 and a processor 13 dedicated to calculating depth, as shown in fig. 1.
Structured light, as the name implies, is a special light source, generally divided into: discrete light spots, bar light, coded structured light. When the system works, light spots which are subjected to specific coding are projected onto a target 10 to be imaged from the optical projector 11, the target 10 to be imaged reflects light rays, and the optical camera 12 collects the reflected light rays to form a picture; the processor 13 calculates the distance from each point of the target 10 to be imaged to the camera plane according to the distortion condition of the light spot.
However, the existing technology for performing 3D imaging by structured light often has the problems of low imaging speed and poor imaging quality.
Disclosure of Invention
The problem solved by the invention is how to improve the response speed and imaging quality of a 3D imaging device.
To solve the above problems, the present invention provides a 3D imaging apparatus including:
a light source screen adapted to display a plurality of preset patterns to generate imaging light; the imaging light is reflected by a target to be imaged to form reflected light; the imaging module collects the reflected light to perform 3D imaging on the target to be imaged; wherein, the light source screen includes: an array of point light sources on the substrate, each column of point light sources comprising: a plurality of point light source groups, the point light source groups comprising: at least 1 said point light source, there is no switching device in the said point light source.
Optionally, the number of columns of the point light source array is greater than or equal to 320.
Optionally, in each row of point light sources, the number of the point light sources is greater than or equal to 320.
Optionally, the point light source group includes a plurality of point light sources connected in series.
Optionally, a plurality of point light sources in the same point light source group are arranged in series.
Optionally, the plurality of point light sources in the plurality of point light source groups are arranged at intervals according to a group order.
Optionally, the point light sources in the same column are all point light sources of the same color.
Optionally, the point light sources in the point light source array are all point light sources of the same color.
Optionally, the point light sources in adjacent columns are point light sources of different colors.
Optionally, the point light sources in the odd-numbered columns and the point light sources in the even-numbered columns are point light sources with different colors.
Optionally, the point light source at column 3k, the point light source at column 3k +1, and the point light source at column 3k +2 are point light sources with different colors, where k is an integer greater than or equal to 0.
Optionally, the light source screen further includes: a plurality of driving lines on the substrate, the driving lines extending in a column direction; in each point light source group, the first ends of at least 1 point light source are directly connected with the corresponding driving wires.
Optionally, the light source screen further includes: a plurality of common electrode lines on the substrate, the common electrode lines extending in a column direction; in each point light source group, the second ends of at least 1 point light source are directly connected with the corresponding common electrode wire.
Optionally, the plurality of preset patterns are all stripe patterns, and stripes in the stripe patterns extend along the column direction.
Optionally, each of the point light sources includes 1 LED lamp.
Optionally, the size of the point light source is in a range of 10 micrometers to 200 micrometers.
Optionally, the LED lamp is at least one of a Mini LED and a micro LED.
Optionally, the light source screen further includes: and the driving chip is connected with the driving wire.
Optionally, the driving chip controls the point light source in a current regulation manner or a pulse width regulation manner.
Optionally, the driving chip simultaneously lights a plurality of continuous rows of the point light sources; or the driving chips alternately light a plurality of rows of the point light sources.
Optionally, the light source screen is a silicon-based LED display screen.
Correspondingly, the invention also provides an electronic device, comprising: a 3D imaging device, the 3D imaging device being a 3D imaging device of the present invention.
Compared with the prior art, the technical scheme of the invention has the following advantages:
in the technical scheme of the invention, a switch device is not arranged in the point light source. Because the switch device is not arranged in the point light source, the point light sources are arranged in an array in a row without scanning line by line in the point light source array, and the switching speed of a plurality of preset patterns can be greatly improved; and the point light source without the switch device is directly connected into the circuit through the metal wire, so that the resistance can be effectively reduced, the current can be improved, and the luminous intensity of the point light source can be effectively improved.
In an alternative aspect of the invention, the point light source group includes a plurality of point light sources connected in series. Make a plurality of pointolite of same point light source group establish ties, can guarantee that the current intensity of a plurality of pointolites in the same point light source group equals that luminous intensity is the same to the manufacturing process that can effectively balance a plurality of pointolites in the same point light source group floats, can effectively reduce the difference of different point light source group luminance.
In an alternative embodiment of the present invention, the plurality of point light sources in the plurality of point light source groups are arranged at intervals in the group order. The plurality of point light sources are arranged at intervals according to the group sequence, so that the difference of the luminous intensity among different point light source groups can be effectively balanced, and the uniform distribution of the luminous intensity can be further improved.
Drawings
Fig. 1 is a schematic configuration diagram of a 3D imaging apparatus;
FIG. 2 is a schematic structural diagram of a 3D imaging apparatus according to an embodiment of the invention;
FIG. 3 is a schematic top view of a light source screen in the embodiment of the 3D imaging device shown in FIG. 2;
FIG. 4 is a schematic diagram of a side view structure of the point light source in the embodiment of the 3D imaging device shown in FIG. 3;
FIG. 5 is a schematic diagram of a side view structure of the driver chip and the point light source array in the light source panel of the embodiment of the 3D imaging device shown in FIG. 3;
FIG. 6 is a schematic diagram of a side view structure of the driving chip and the point light source array in a light source panel according to another embodiment of the 3D imaging apparatus of the present invention;
FIG. 7 is a schematic side view of a point light source array in another embodiment of the 3D imaging apparatus of the present invention;
FIG. 8 is a schematic top view of a light source screen in another embodiment of a 3D imaging device according to the invention;
fig. 9 is a schematic top view of a light source screen in another embodiment of the 3D imaging apparatus of the present invention.
Detailed Description
As is clear from the background art, the response speed and imaging quality of the 3D imaging apparatus in the related art are not ideal.
In the existing 3D imaging technology, 3D structured light is often generated by taking a silicon-based LED display screen as a light source screen. The light source screen performs line-by-line scanning to display a plurality of preset patterns, thereby generating structured light.
Because the light source screen needs to scan line by line, the switching speed between different preset patterns is low, and the response speed of the 3D imaging device is influenced; in the silicon-based LED display screen, each LED point light source is connected with at least 1 switch device and then connected with a driving line or a scanning line.
The switch device is manufactured by adopting a CMOS process, so that the switch device has certain resistance. The existence of the switching device limits the current of each LED point light source, thereby influencing the luminous intensity of each LED point light source; the limitation of the luminous intensity of the LED point light source influences the imaging quality of the 3D imaging device.
To solve the technical problem, the present invention provides a 3D imaging apparatus, comprising:
a light source screen adapted to display a plurality of preset patterns to generate imaging light; the imaging light is reflected by a target to be imaged to form reflected light; the imaging module collects the reflected light to perform 3D imaging on the target to be imaged; wherein, the light source screen includes: an array of point light sources on the substrate, each column of point light sources comprising: a plurality of point light source groups, the point light source groups comprising: at least 1 said point light source, there is no switching device in the said point light source.
According to the technical scheme, a switch device is not arranged in the point light source in the light source screen. Because the switch device is not arranged in the point light source, the multiple rows of point light sources of the light source screen are simultaneously opened in a whole row without scanning line by line, and the switching speed of the multiple preset patterns can be greatly improved; and the point light source without the switch device is directly connected into the circuit through the metal wire, so that the resistance can be effectively reduced, the current can be increased, and the luminous intensity of the point light source can be effectively increased.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 2, a schematic structural diagram of an embodiment of the 3D imaging apparatus of the present invention is shown.
The 3D imaging apparatus includes: a light source screen 110, the light source screen 110 adapted to display a plurality of predetermined patterns to generate imaging light; the imaging light is reflected by the object 100 to be imaged to form reflected light; an imaging module 120, wherein the imaging module 120 collects the reflected light to perform 3D imaging on the object 100 to be imaged. The processor 130 calculates 3D depth information of the object to be imaged 100 from the reflected light information.
The light source panel 110 is adapted to display a plurality of predetermined patterns as a structured light source to produce structured light.
Referring to fig. 3 in combination, a schematic top view of a light source screen in the embodiment of the 3D imaging apparatus shown in fig. 2 is shown.
The light source screen 110 includes: the point light source array 111 on the substrate 101, each column of point light sources 113 (shown by a dashed box 116 in fig. 3) includes: a plurality of point light source banks 112, said point light source banks 112 comprising: at least 1 point light source 113, and no switching device is arranged in the point light source 113.
Avoiding the arrangement of a light-emitting device in the point light source 113, so that the point light sources 113 are simultaneously turned on in an entire column without scanning line by line, and the switching speed of a plurality of preset patterns can be greatly improved; and the point light source 113 without the switch device is directly connected into the circuit through a metal wire, so that the resistance can be effectively reduced, the current can be increased, and the luminous intensity of the point light source can be effectively improved.
The point light sources 113 are arranged on the substrate 101 in an array direction to form the point light source array 111; each column of the point light sources 113 is divided into a plurality of point light source groups 112, and each of the point light source groups 112 includes: at least 1 of the point light sources 113. Specifically, in the embodiment shown in fig. 3, each point light source group 112 includes 1 point light source 113.
It should be noted that, in some embodiments of the present invention, the light source screen 110 is a silicon-based LED display screen. In other embodiments, the substrate 101 may also be a glass substrate, a ceramic substrate, or a PCB board. At least 1 layer of metal wires is fabricated on the substrate 101 for connecting the point light sources 113. Referring to fig. 4 in combination, a schematic diagram of a side view structure of the point light source in the embodiment of the 3D imaging apparatus shown in fig. 3 is shown.
In some embodiments of the present invention, each of the point light sources 113 (shown in fig. 3 and 4) includes 1 LED lamp 113L. As shown in fig. 4, at least 1 layer of metal wiring 113M is fabricated on the substrate 101 through a semiconductor process to realize electrical connection; the LED lamp 113L is attached to the substrate 101, and an electrode of the LED lamp 113L is connected to the metal wiring 113M by welding or bonding. The metal wires 113M may be made of copper, aluminum, or silver, and when the metal wires 113M are formed in multiple layers, an insulating layer is formed between adjacent metal layers 113M.
In some embodiments of the present invention, the spot light sources 113 have a size in a range of 10 to 200 microns. Therefore, the LED lamp 113L is at least one of a Mini LED and a micro LED. The Mini LED, namely a sub-millimeter light emitting diode, is an LED lamp with a chip size of 50-200 microns; microLED refers to LED lamp with chip size less than 50 microns.
With continued reference to fig. 3, in order to ensure the clarity of the displayed predetermined pattern, in some embodiments of the invention, the number of rows of the point light source array 111 is greater than or equal to 320; in each column of the point light sources 113, the number of the point light sources 113 is greater than or equal to 320.
In some embodiments of the present invention, the point light sources 113 in the same row are all point light sources with the same color. Specifically, the color of the point light source 113 is one of red, green, blue, white, or near infrared. Specifically, in the embodiment shown in fig. 3, the point light sources 113 in the point light source array 111 are all point light sources of the same color.
In some embodiments of the present invention, the light source screen 110 further comprises: a plurality of driving lines 114 on the substrate 101, the driving lines 114 extending in a column direction; in each point light source group 112, the first end 112a of at least 1 point light source 113 is directly connected to the corresponding driving line 114.
Each of the driving lines 114 is connected to the point light sources 113 in the same row for controlling the point light sources 113 in the same row. The point light source 113 is not provided with a switching device. Specifically, as shown in fig. 3, the first end 112a of the point light source group 112 is directly connected to the corresponding driving line 114, that is, the first end 112a of the point light source group 112 is directly electrically connected to the corresponding driving line 114 through a metal wire 113M (shown in fig. 4), and no other semiconductor structure or device is provided.
In addition, in some embodiments of the present invention, the light source screen 110 further includes: a plurality of common electrode lines 115 on the substrate 101, the common electrode lines 115 extending in a column direction; in each point light source group 112, the second end 112b of at least 1 point light source 113 is directly connected to the corresponding common electrode line 115.
Each common electrode line 115 is connected to the point light sources 113 in the same column, so as to directly electrically connect the point light sources 113 to the common electrode voltage source 121. The point light source 113 is not provided with a switching device. Specifically, as shown in fig. 3, the second end 112b of the point light source group 112 is directly connected to the corresponding common electrode line 115, that is, in the point light source group 112, the second end 112b opposite to the first end 112a is electrically connected to the corresponding common electrode line 115 directly through a metal wire 113M (as shown in fig. 4), and no other semiconductor structure or device is disposed.
Therefore, in each column of the point light source array 111, the plurality of point light source groups are connected in parallel between the driving line 114 and the common electrode line 115.
Specifically, as shown in the embodiment of fig. 3, each of the point light source groups 112 includes 1 point light source 113; one electrode of the point light source 113 is directly connected to the corresponding driving line 114; the other electrode is directly connected to the corresponding common electrode line 115, that is, each column of the point light sources 113 is connected in parallel between the corresponding driving line 114 and the corresponding common electrode line 115.
With continued reference to FIG. 3, in some embodiments of the present invention, the light source screen 110 further includes: and the driving chip 117 is connected with the driving line 114.
The driving chip 117 is used for controlling the point light source 113.
Specifically, the driving chip 117 is fixed to the driving board 102. As shown in fig. 5, the driving chip 117 and the point light source array 111 can be electrically interconnected by wire bonding.
In addition, in some embodiments of the present invention, the driving board 102 and the substrate 101 are fixed on the supporting substrate 103 to fix the relative position between the driving chip 117 and the point light source array 111. The metal line 104 for realizing electrical interconnection may be one of gold line or aluminum line.
It should be noted that the implementation of the electrical interconnection between the driving chip 117 and the point light source array 111 by wire bonding is only an example.
As shown in fig. 6, in other embodiments of the present invention, the driving chip 217 and the point light source array 211 may be electrically interconnected by combining a Flexible Printed Circuit (FPC) 204 with an Anisotropic Conductive Film (ACF) 205.
When the flexible circuit board 204 is electrically connected with the anisotropic conductive film 205, the driving board 202 and the substrate 201 need not to be fixed, that is, the relative position between the driving board 202 and the substrate 201 can be flexibly changed.
In some embodiments of the present invention, each of the point light sources 113 (shown in fig. 3) includes 1 LED lamp 113L. The LED lamp is a current driving device; generally, the luminance of an LED lamp is linear with the current flowing through it. Therefore, in order to accurately control the light emission brightness of the point light source 113, the driving chip 117 controls the point light source 113 in a current regulation manner, that is, by regulating the current flowing through the point light source 113, the light emission brightness of the point light source 113 is controlled, and the larger the current is, the larger the brightness is. In other embodiments of the present invention, the driving chip 117 may also control the point light source by a Pulse Width Modulation (PWM).
The light source screen 110 is a structured light source in a 3D imaging device, a plurality of preset patterns displayed by the light source screen 110 are all stripe patterns, and stripes in the stripe patterns extend along a column direction of the point light source array 111. Specifically, the plurality of stripe patterns are different stripe patterns, and may be stripe patterns with different stripe widths, for example.
With continued reference to fig. 2, the light source screen 110 displays an image light generated by a predetermined pattern and projects the image light to the target 100 to be imaged; the reflected light formed by the reflection of the target 100 to be imaged is collected by the imaging module 120 to realize 3D imaging.
In other embodiments of the present invention, as shown in fig. 7, the point light source 313 further includes: and the lens-like structure 314 is positioned on the light-emitting side of the point light source. The lens-like structure 314 is used for collecting the light generated by the point light source 313, so that the light-emitting angle of the point light source 313 is within a range of ± 30 °, that is, the light-emitting opening angle of the point light source 313 is within 60 °. The arrangement mode can effectively improve the utilization rate of light. The lens-like structure 314 may be formed by a light-transmitting medium such as dot epoxy.
In addition, in order to protect the point light source to ensure the stable performance of the light source screen, the light source screen further includes: a protective cover 315 covering the array of point light sources. An air gap is provided between the protective cover 315 and the array of point light sources. The protective cover plate 315 is fixedly connected to the substrate 301 by a sealant surrounding the point light source array.
It should be noted that, in the foregoing embodiment, the point light source group includes only 1 point light source. This arrangement is merely exemplary. In other embodiments of the present invention, the point light source set may also include other numbers of point light sources.
Referring to fig. 8, a schematic top view of a light source screen in another embodiment of the 3D imaging apparatus of the present invention is shown.
The present invention is not described in detail herein, except for the above-mentioned embodiments. The difference between the previous embodiments is that in some embodiments of the present invention, the point light source group 412 includes a plurality of point light sources 413 connected in series. Specifically, the point light sources 413 in the same point light source group 412 are arranged in series.
Each column of the point light sources 413 (shown as a dashed box 416 in fig. 8) includes: the point light source groups 412 include a plurality of point light sources 413 connected in series, that is, the point light sources 413 in the same row are divided into the plurality of point light source groups 412, and the point light sources 413 in the same point light source group 412 are connected in series.
Specifically, in the embodiment shown in fig. 8, each row of the point light source 413 of the point light source array includes i point light source groups 412, each point light source group 412 includes j point light sources 413, where i and j are integers greater than or equal to 1; in each column of the point light source array, a 1 st point light source 413 of a 1 st point light source group 412, a 2 nd point light source 413, a 8230of a 1 st point light source group 412, a jth point light source 413 of a 1 st point light source group 412, a 1 st point light source 413 of a 2 nd point light source group 412, a 2 nd point light source 413, an 8230of a 2 nd point light source group 412, a jth point light source 413, a 2 nd point light source 413, a 828230, a jth point light source 413 of an ith point light source group 412, a 2 nd point light source 413, a 828230of an ith point light source group 412, a jth point light source 413 of an ith point light source group 412 are sequentially arranged.
Since the plurality of point light sources 413 in the same point light source group 412 are connected in series, the currents flowing through the plurality of point light sources 413 in the same point light source group 412 are equal and the light emitting intensities are similar, so that the manufacturing process fluctuation of the plurality of point light sources 413 in the same point light source group 412 can be effectively balanced, the difference of the light emitting brightness of the point light source groups 412 at different points can be effectively reduced, and the uniformity of the light emitting intensities of the point light sources in the same row in the point light source array can be effectively improved.
The point light source 413 is not provided with a switching device, and a plurality of point light source groups 412 are connected in parallel between the driving line 414 and the common electrode line 415, and a plurality of point light sources 413 in the same point light source group 412 are connected in series, so in the point light source group 412 including j point light sources 413, a first end of a 1 st point light source 413 is directly connected to the driving line 414, a second end of a 1 st point light source 413 is directly connected to a first end of a 2 nd point light source 413, a second end of a 2 nd point light source 413 is directly connected to a first end of a 3 rd point light source 413, \\8230 \\ 8230;, a second end of a j-1 st point light source 413 is directly connected to a first end of a j th point light source 413, and a second end of the j th point light source 413 is directly connected to the common electrode line 415.
In addition, in some embodiments of the present invention, the point light sources 413 in adjacent columns are point light sources of different colors. Specifically, as shown in fig. 8, the point light sources 413 in the odd-numbered columns and the point light sources in the even-numbered columns are different in color, that is, the point light sources 413 in the 1 st, 3 rd, 5 th, 8230, 2k +1 st, and the like generate light with a color of one of blue, green, red, white or near infrared; the color of the light generated by the point light source 413 of the 2 nd, 4 th, 6 th, 8230, 2k nd columns is another one of blue, green, red, white or near infrared, wherein k is an integer greater than or equal to 1.
In some embodiments of the present invention, the driving chip 417 simultaneously lights up a plurality of consecutive rows of the point light sources 413 to display the predetermined pattern. Since the point light sources 413 in different rows are point light sources in different colors, different preset patterns in different colors can be displayed simultaneously by simultaneously lighting the continuous rows of the point light sources 413, so that the imaging speed can be effectively increased, and the imaging efficiency can be improved. Of course, in other embodiments of the present invention, the driving chip may alternatively illuminate a plurality of rows of the point light sources.
It should be noted that the arrangement manner of the point light sources 413 arranged in the same point light source group 412 in a continuous manner is only an example. In other embodiments of the present invention, in each row of the point light sources of the point light source array, the point light sources of the point light source groups may also adopt other arrangement modes.
Referring to fig. 9, a schematic top view of a light source screen in another embodiment of the 3D imaging apparatus of the present invention is shown.
The same points as the previous embodiments are omitted for the description of the present invention. The difference between the previous embodiments is that in some embodiments of the present invention, the point light sources 513 in the point light source groups 512 are arranged at intervals in a group order. The arrangement of the point light sources 513 in the multiple point light source groups 512 at intervals in a group order means that in each row of the point light sources 513 in the point light source array (as shown by a dashed line frame 516 in fig. 9), the point light sources 513 with the same serial number in the multiple point light source groups 512 are arranged consecutively.
Specifically, in the embodiment shown in fig. 9, each row of the point light source 513 of the point light source array includes i point light source groups 512, each point light source group 512 includes j point light sources 513, where i and j are integers greater than or equal to 1; in each column of the point light source array, the 1 st point light source 513 of the 1 st point light source group 512, the 1 st point light source 513 of the 2 nd point light source group 512, the 8230, the 1 st point light source 513 of the ith point light source group 512, the 2 nd point light source 513 of the 1 st point light source group 512, the 2 nd point light source 513 of the 2 nd point light source group 512, the 8230, the 2 nd point light source 513 of the ith point light source group 512, the 3 rd point light source 513 of the 1 st point light source group 512, the 3 rd point light source 513 of the 2 nd point light source group 512, the 8230, the 3 rd point light source of the ith point light source group 512, the 8230, the jth point light source 513 of the ith point light source group 512, the jth point light source 513 of the 2 nd point light source group 512, the 8230, the jth point light source 513 of the jth point light source group 512, the 8230, the jth point light source 513 of the jth point light source group 512, the jth point 8230, the jth point light source group 513, the jth point 8230, and the jth point light source 513 are arranged in turn.
The plurality of point light sources 513 in the plurality of point light source groups 512 are arranged at intervals in a group order. The plurality of point light sources 513 are arranged at intervals in a group order, so that the difference of the luminous intensity between different point light source groups 512 can be effectively balanced, and the uniform distribution of the luminous intensity can be further improved.
In addition, in some embodiments of the present invention, the point light sources 513 in adjacent columns are also different color point light sources. Specifically, in the embodiment shown in FIG. 9, the point light source 513 on the 3k th column, the point light source 513 on the 3k +1 th column, and the point light source 513 on the 3k +2 th column are point light sources with different colors, where k is an integer greater than or equal to 0. Therefore, the color of the light generated by the point light source 413 of the 1 st, 4 th, 7 th, \8230;, 3k +1 st columns is one of blue, green, red, white or near infrared; the color of light generated by the point light source 413 of the 2 nd, 5 th, 8 th, \8230 \ 8230;, the 3k +2 nd column is another one of blue, green, red, white or near infrared, the color of light generated by the point light source 413 of the 3 rd, 6 th, 9 th, column \8230;, the color of light generated by the point light source 413 of the 3k # column is still another one of blue, green, red, white or near infrared.
Correspondingly, the invention further provides electronic equipment.
The electronic device includes: a 3D imaging device, the 3D imaging device being a 3D imaging device of the present invention.
The 3D imaging device is the 3D imaging device of the invention. The specific technical solution of the 3D imaging device refers to the aforementioned embodiment of the 3D imaging device, and the present invention is not described herein again.
In summary, no switching device is disposed in the point light source. Because the switch device is not arranged in the point light source, the point light sources are arranged in an array in a row without scanning line by line in the point light source array, and the switching speed of a plurality of preset patterns can be greatly improved; and the point light source without the switch device is directly connected into the circuit through the metal wire, so that the resistance can be effectively reduced, the current can be improved, and the luminous intensity of the point light source can be effectively improved.
Moreover, the point light source group comprises a plurality of point light sources connected in series. Make a plurality of pointolite of same point light source group establish ties, can guarantee that the current strength of a plurality of pointolite in the same point light source group equals that luminous intensity is the same to the manufacturing process that can effectively balance a plurality of pointolite in the same point light source group floats, can effectively reduce the difference of different point light source group luminance.
In addition, a plurality of point light sources in the plurality of point light source groups are arranged at intervals in a group order. The plurality of point light sources are arranged at intervals according to the group sequence, so that the difference of the luminous intensity among different point light source groups can be effectively balanced, and the uniform distribution of the luminous intensity can be further improved.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (22)
1. A 3D imaging apparatus, comprising:
a light source screen adapted to display a plurality of preset patterns to generate imaging light;
the imaging light is reflected by a target to be imaged to form reflected light;
the imaging module collects the reflected light to perform 3D imaging on the target to be imaged;
wherein, the light source screen includes: an array of point light sources on the substrate, each column of point light sources comprising: a plurality of point light source groups, the point light source groups comprising: at least 1 said point light source, there is no switching device in the said point light source.
2. The 3D imaging device according to claim 1, wherein the number of columns of the point light source array is 320 or more.
3. The 3D imaging apparatus according to claim 1, wherein the number of point light sources in each column of point light sources is 320 or more.
4. The 3D imaging apparatus according to claim 1, wherein the point light source group includes a plurality of point light sources connected in series.
5. The 3D imaging apparatus according to claim 4, wherein a plurality of the point light sources in the same point light source group are arranged in series.
6. The 3D imaging apparatus according to claim 4, wherein the plurality of point light sources within the plurality of point light source groups are arranged at intervals in a group order.
7. The 3D imaging apparatus of claim 1, wherein the point light sources in a same column are all point light sources of a same color.
8. The 3D imaging apparatus according to claim 7, wherein the point light sources in the point light source array are all point light sources of the same color.
9. The 3D imaging apparatus according to claim 7, wherein the point light sources of adjacent columns are point light sources of different colors.
10. The 3D imaging device according to claim 9, wherein the point light sources of the odd-numbered columns are point light sources different in color from the point light sources of the even-numbered columns.
11. The 3D imaging apparatus according to claim 9, wherein the point light source of column 3k, the point light source of column 3k +1, and the point light source of column 3k +2 are point light sources different in color, where k is an integer of 0 or more.
12. The 3D imaging apparatus of claim 1, wherein the light source screen further comprises:
a plurality of driving lines on the substrate, the driving lines extending in a column direction;
in each point light source group, the first ends of at least 1 point light source are directly connected with the corresponding driving wires.
13. The 3D imaging apparatus of claim 12, wherein the light source screen further comprises:
a plurality of common electrode lines on the substrate, the common electrode lines extending in a column direction;
in each point light source group, the second end of at least 1 point light source is directly connected with the corresponding common electrode line.
14. The 3D imaging apparatus according to claim 1, wherein the plurality of predetermined patterns are each a stripe pattern in which stripes extend in a column direction.
15. The 3D imaging apparatus of claim 1, wherein each of the point light sources includes 1 LED lamp.
16. The 3D imaging apparatus of claim 15, wherein the point light source has a size in a range of 10 to 200 microns.
17. The 3D imaging device according to claim 15, wherein the LED lamp is at least one of a Mini LED and a micro LED.
18. The 3D imaging apparatus of claim 1, wherein the light source screen further comprises: and the driving chip is connected with the driving wire.
19. The 3D imaging apparatus according to claim 18, wherein the driving chip controls the point light source by means of current adjustment or pulse width adjustment.
20. The 3D imaging apparatus according to claim 18, wherein the driving chip simultaneously lights up a plurality of consecutive columns of the point light sources;
or the driving chips alternately light a plurality of rows of the point light sources.
21. The 3D imaging device according to claim 18, wherein the light source screen is a silicon-based LED display screen.
22. An electronic device, comprising:
a 3D imaging device, the 3D imaging device as claimed in any one of claims 1 to 21.
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| CN202210847957.4A CN115236917A (en) | 2022-07-19 | 2022-07-19 | 3D imaging device and electronic equipment |
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| CN202210847957.4A CN115236917A (en) | 2022-07-19 | 2022-07-19 | 3D imaging device and electronic equipment |
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