CN208110223U - Laser projection mould group, depth camera and electronic device - Google Patents
Laser projection mould group, depth camera and electronic device Download PDFInfo
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- CN208110223U CN208110223U CN201820280990.2U CN201820280990U CN208110223U CN 208110223 U CN208110223 U CN 208110223U CN 201820280990 U CN201820280990 U CN 201820280990U CN 208110223 U CN208110223 U CN 208110223U
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- Prior art keywords
- lens barrel
- mould group
- side wall
- laser projection
- laser
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Abstract
The utility model discloses a kind of laser projection mould group, depth camera and electronic devices.Laser projection mould group includes board unit, lens barrel, light source, collimating element, diffraction optical element and protective case.Lens barrel is arranged on board unit and accommodating chamber is collectively formed with board unit, and lens barrel includes lens barrel side wall, and lens barrel side wall is formed with sidewall notches.Light source is arranged on board unit and for emitting laser to accommodating chamber.Collimating element and diffraction optical element are housed in accommodating chamber, and light source, collimating element and diffraction optical element are successively set in the optical path of light source.Protective case includes the protective side wall for protecting roof and self-shield roof to extend; protection roof offers light hole; light hole is corresponding with diffraction optical element; protective side wall protrudes into sidewall notches and in conjunction with lens barrel side wall, and protective case can stop diffraction optical element to move along the light direction of laser projection mould group.In this way, diffraction optical element is made not fall off along the light direction of laser projection mould group.
Description
Technical field
The utility model relates to optics and electronic technology fields, more specifically, are related to a kind of laser projection mould group, depth
Camera and electronic device.
Background technique
Existing projective module group generally comprises the structures such as mirror holder, light source, collimating mirror, diffraction optical element, and collimating mirror is used for
The laser that the light source of projective module group issues is collimated, diffraction optical element (diffractive optical elements, DOE) is used
Laser projection after it will collimate is at laser pattern, but diffraction optical element is usually to be attached to mirror holder upper end and naked with glue
It is exposed at outside mirror holder, is easy to fall off.
Utility model content
The utility model embodiment provides a kind of laser projection mould group, depth camera and electronic device.
The laser projection mould group of the utility model embodiment includes：
Board unit；
Lens barrel, the lens barrel is arranged on the board unit and accommodating chamber is collectively formed with the board unit, described
Lens barrel includes lens barrel side wall, and the lens barrel side wall is formed with sidewall notches；
Light source, the light source are arranged on the board unit and for emitting laser to the accommodating chamber；
Collimating element, the collimating element are housed in the accommodating chamber；
Diffraction optical element, the diffraction optical element are housed in the accommodating chamber, the light source, the collimating element
It is successively set on the diffraction optical element in the optical path of the light source；With
Protective case, the protective case include the protective side wall protecting roof and extending from the protection roof, the protection
Roof offers light hole, and the light hole is corresponding with the diffraction optical element, and it is recessed that the protective side wall protrudes into the side wall
Slot and in conjunction with the lens barrel side wall, the protective case can stop the diffraction optical element along the laser projection mould group
Light direction is mobile.
In some embodiments, the lens barrel includes the limit convex projecting inward to the accommodating chamber from the lens barrel side wall
It rises, the diffraction optical element is mounted in the retention bead, and between the retention bead and the protection roof.
In some embodiments, the lens barrel includes opposite the first face and the second face, second face and the base
Board group part combines, and the lens barrel further includes the faying face between first face and second face, the protection roof
In conjunction with the faying face, between second face and the faying face, the protection roof is located at the retention bead
Between the faying face and first face.
In some embodiments, the retention bead includes confined planes, and the diffraction optical element is mounted on the limit
On plane, the retention bead offered unthreaded hole, and the unthreaded hole excessively is corresponding with the light hole.
In some embodiments, the lens barrel side wall is also provided with limiting slot, and the limiting slot is provided with the side wall
The slot bottom of groove, the protective case include from the hook of the inwardly projecting elasticity of the protective side wall, and the hook protrudes into described
Limiting slot with the limiting slot to engage.
In some embodiments, protective side wall position corresponding with the hook offers avoid holes, described to keep away
Allow hole for during the protective case is located at the lens barrel, the hook to offset with the slot bottom and the hook is sent out
Deformation space is provided when raw elastic deformation.
In some embodiments, the lens barrel includes faying face, and the protection roof is described in conjunction with the faying face
Lens barrel further includes the limit angle protruded from the faying face, and the protective side wall includes multiple sub- side walls of protection, the protection top
Wall offers spacing breach, two adjacent sub- side walls of protection of the spacing breach interval, the limit angle and the limit
Position notch cooperation.
In some embodiments, the light source includes edge-emitting laser, and the edge-emitting laser includes light-emitting surface,
The light-emitting surface is towards the collimating element.
In some embodiments, the laser projection mould group further includes fixing piece, and the fixing piece is used for the side
Emitting laser is fixed on the board unit.
In some embodiments, the fixing piece includes sealing, sealing setting the edge-emitting laser with
Between the board unit, the sealing is heat-conducting glue.
In some embodiments, the fixing piece includes at least two resilient support being arranged on the board unit
Accommodating space is collectively formed in frame, at least two support frames as described above, and the accommodating space is used to accommodate the edge-emitting laser, until
Few two support frames as described above are used to support residence and state edge-emitting laser.
The depth camera of the utility model embodiment includes：
Laser projection mould group described in above-mentioned any one embodiment；
Image acquisition device, described image collector are used to acquire to be projected into object space from the laser projection mould group
Laser pattern；With
The processor connecting respectively with the laser projection mould group and described image collector, the processor is for handling
The laser pattern is to obtain depth image.
The electronic device of the utility model embodiment includes：
Shell；With
Depth camera described in above embodiment, the depth camera setting are in the shell and sudden and violent from the shell
Dew is to obtain depth image.
The laser projection mould group of the utility model embodiment, depth camera, in electronic device, due to the protection of protective case
Side wall protrudes into the sidewall notches of lens barrel so that in conjunction with lens barrel, the protection roof of protective case can stop diffraction optics first by protective case
Part is moved along the light direction of laser projection mould group, is avoided laser without launching after diffraction optical element, is protected user,
Improve safety.
The additional aspect and advantage of the embodiments of the present invention will be set forth in part in the description, partially will be from
Become obvious in following description, or is recognized by the practice of the embodiments of the present invention.
Detailed description of the invention
In description of the above-mentioned and/or additional aspect and advantage of the utility model from combination following accompanying drawings to embodiment
It will be apparent and be readily appreciated that, wherein：
Fig. 1 is the structural schematic diagram of the electronic device of the utility model embodiment；
Fig. 2 is the structural schematic diagram of the depth camera of the utility model embodiment；
Fig. 3 is the stereoscopic schematic diagram of the laser projection mould group of the utility model embodiment；
Fig. 4 is the floor map of the laser projection mould group of the utility model embodiment；
Fig. 5 is the perspective exploded view figure of the laser projection mould group of the utility model embodiment；
Fig. 6 is schematic cross-section of the laser projection mould group shown in Fig. 4 along line VI -- VI；
Fig. 7 is schematic cross-section of the laser projection mould group shown in Fig. 4 along VII-VII line；
Fig. 8 is the enlarged diagram of the part VIII of the laser projection mould group in Fig. 7；
Fig. 9 is the stereoscopic schematic diagram of the lens barrel of the laser projecting apparatus of the utility model embodiment；
Figure 10 is the stereoscopic schematic diagram of the protective case of the laser projecting apparatus of the utility model embodiment；
Figure 11 be the another embodiment of the utility model embodiment edge and laser projection mould group VI- shown in Fig. 4
The schematic cross-section of VI line corresponding position；
Figure 12 to Figure 14 is the partial structure diagram of the laser projecting apparatus of the utility model embodiment.
Main element and symbol description：
Electronic device 1000, depth camera 100, laser projection mould group 10, board unit 11, substrate 111, dissipates shell 200
Hot hole 1111, circuit board 112, via hole 113, lens barrel 12, accommodating chamber 121, lens barrel side wall 122, sidewall notches 123, slot bottom 1231,
Groove sidewall 1232, retention bead 124, cross unthreaded hole 1241, confined planes 1242, mounting groove 1243, the first face 125, the second face 126,
Faying face 127, limiting slot 128, limit bottom wall 1281, limit side wall 1282, limit angle 129, light source 13, edge-emitting laser
131, light-emitting surface 1311, side 1312, collimating element 14, optical section 141, mounting portion 142, diffraction optical element 15, protective case
16, it protects roof 161, light hole 1611, protective side wall 162, the sub- side wall 1621 of protection, hook 163, interconnecting piece 1631, extend
Portion 1632, support division 1633, avoid holes 164, spacing breach 165, connector 17, fixing piece 18, sealing 181, support frame 182,
Accommodating space 183, image acquisition device 20, processor 30, projection window 40, acquisition window 50.
Specific embodiment
The embodiments of the present invention is described further below in conjunction with attached drawing.Same or similar label in attached drawing
Same or similar element or element with the same or similar functions are indicated from beginning to end.
In addition, the embodiments of the present invention described with reference to the accompanying drawing is exemplary, it is only used for explaining this reality
With novel embodiment, and should not be understood as limiting the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down "
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special
Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only
Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
Referring to Fig. 1, the electronic device 1000 of the utility model embodiment includes shell 200 and depth camera 100.Electricity
Sub-device 1000 can be mobile phone, tablet computer, laptop computer, game machine, head and show equipment, access control system, automatic teller machine etc., this reality
It is illustrated so that electronic device 1000 is mobile phone as an example with new embodiment, it will be understood that the concrete form of electronic device 1000
It can be other, this is not restricted.Depth camera 100 is arranged in shell 200 and from the exposure of shell 200 to obtain depth map
Picture, shell 200 can provide the protection such as dust-proof, waterproof, shatter-resistant to depth camera 100, offer on shell 200 and depth camera
100 corresponding holes, so that light is pierced by from hole or penetrates shell 200.
Referring to Fig. 2, depth camera 100 includes laser projection mould group 10, image acquisition device 20 and processor 30.Depth phase
It could be formed with projection window 40 corresponding with laser projection mould group 10, and acquisition corresponding with image acquisition device 20 on machine 100
Window 50.Laser projection mould group 10 is used to project laser pattern to object space by projection window 40, and image acquisition device 20 is used
It acquires in by acquisition window 50 by the modulated laser pattern of subject matter.In one example, laser projection mould group 10 projects
Laser be infrared light, image acquisition device 20 be infrared camera.Processor 30 and laser projection mould group 10 and image acquisition device
20 are all connected with, and processor 30 is for handling laser pattern to obtain depth image.Specifically, processor 30 is calculated using images match
Method calculates the deviation value of each pixel corresponding with reference pattern of each pixel in the laser pattern, further according to the deviation
Value further obtains the depth image of the laser pattern.Wherein, image matching algorithm can be digital picture correlation (Digital
Image Correlation, DIC) algorithm.It is of course also possible to use other image matching algorithms replace DIC algorithm.Below will
The structure of laser projection mould group 10 is described further.
Please refer to Fig. 3 to Fig. 6, laser projection mould group 10 include board unit 11, lens barrel 12, light source 13, collimating element 14,
Diffraction optical element 15 and protective case 16.Light source 13, collimating element 14 and diffraction optical element 15 are successively set on light source 13
In optical path, specifically, the light that light source 13 issues sequentially passes through collimating element 14 and diffraction optical element 15.
Fig. 6 and Fig. 7 are please referred to, board unit 11 includes substrate 111 and the circuit board 112 being carried on substrate 111.Substrate
111 for carrying lens barrel 12, light source 13 and circuit board 112.The material of substrate 111 can be plastics, such as poly terephthalic acid
Glycol ester (Polyethylene Glycol Terephthalate, PET), polymethyl methacrylate (Polymethyl
Methacrylate, PMMA), polycarbonate (Polycarbonate, PC), in polyimides (Polyimide, PI) at least
It is a kind of.That is, substrate 111 can be made of the unitary plastic material of any one in PET, PMMA, PC or PI.Such as
This, 111 lighter weight of substrate and have enough support strengths.
Circuit board 112 can be printed circuit board, flexible circuit board, any one in Rigid Flex.Circuit board 112
On can offer via hole 113, can be used for accommodating light source 13 in via hole 113,112 a part of circuit board is covered by lens barrel 12,
Another part extends out and can connect with connector 17, and laser projection mould group 10 can be connected to electronics dress by connector 17
It sets on 1000 mainboard.
Fig. 6 to Fig. 8 is please referred to, lens barrel 12 is arranged on board unit 11 and accommodating chamber is collectively formed with board unit 11
121, lens barrel 12 includes lens barrel side wall 122, and lens barrel side wall 122 is formed with sidewall notches 123.Specifically, lens barrel 12 can be with base
The circuit board 112 of board group part 11 connects, and lens barrel 12 can be bonded by viscose glue with circuit board 112, to improve the gas of accommodating chamber 121
Close property.Certainly, the specific connection type of lens barrel 12 and board unit 11 can have other, such as by being connected together.Accommodating chamber
121 can be used for accommodating the components such as collimating element 14, diffraction optical element 15, and accommodating chamber 121 is formed simultaneously laser projection mould
A part of the optical path of group 10.In the utility model embodiment, lens barrel 12 is in hollow tubular, and lens barrel 12 includes lens barrel side wall
122。
Lens barrel side wall 122 surrounds accommodating chamber 121.The outer wall of lens barrel side wall 122 could be formed with location structure and installation knot
Structure, in order to the position of the fixed laser projective module group 10 when laser projection mould group 10 to be mounted in electronic device 1000.Mirror
Cylinder 12 includes opposite the first face 125 and the second face 126, and wherein the one of accommodating chamber 121 is provided on the second face 126,
Another is provided on the first face 125.Second face 126 is combined with circuit board 112, such as glued.Lens barrel 12 includes being located at
Faying face 127 between first face 125 and the second face 126.Faying face 127 is the contact surface of protective case 16 and lens barrel 12.
Please please refer to Fig. 9 and Figure 10, sidewall notches 123 are formed on lens barrel side wall 122, specifically, sidewall notches 123 by
Slot bottom 1231 and the formation of groove sidewall 1232 extended from 1231 periphery of slot bottom.Sidewall notches 123 include multiple, multiple sidewall notches
123 are spaced apart.Protective case 16 is fixed on lens barrel 12 by sidewall notches 123 for being combined with protective case 16.
Referring to Fig. 6, light source 13 is arranged on board unit 11, specifically, light source 13 be can be set on circuit board 112
And be electrically connected with circuit board 112, light source 13 also can be set on substrate 111 and be housed in via hole 113, at this point it is possible to logical
It crosses arrangement conducting wire and is electrically connected light source 13 with circuit board 112.Light source 13 is for emitting laser, and laser can be infrared light, one
In a example, light source 13 may include the emitting laser of semiconductor substrate and setting on a semiconductor substrate, semiconductor substrate
It is arranged on substrate 111, emitting laser can be vertical cavity surface emitting laser (Vertical Cavity Surface
Emitting Laser,VCSEL).Single emitting laser can be set in semiconductor substrate, also can be set and is swashed by multiple transmittings
The array laser of light device composition, specifically, multiple emitting lasers can be with the shape of regularly or irregularly two-dimensional pattern
Formula is arranged on a semiconductor substrate.
Please continue to refer to Fig. 6, collimating element 14 can be optical lens, and collimating element 14 emits for collimated light source 13
Laser, collimating element 14 are housed in accommodating chamber 121, and collimating element 14 can be directed toward the direction in the first face 125 along the second face 126
It is assembled into accommodating chamber 121.Collimating element 14 includes optical section 141 and mounting portion 142, and mounting portion 142 is used for and lens barrel side wall
122 combine so that collimating element 14 is fixed in accommodating chamber 121, and in the utility model embodiment, optical section 141 includes being located at
Two curved surfaces of the opposite two sides of collimating element 14.
Fig. 5 and Fig. 6 are please referred to, diffraction optical element 15 is housed in accommodating chamber 121.In the utility model embodiment, spread out
It penetrates on optical element 15 and is formed with diffraction structure, diffraction optical element 15 can be by the laser projection after collimated element 14 collimation
Laser pattern corresponding with diffraction structure out.Diffraction optical element 15 can be made of glass, it may also be said to (such as by composite plastic
PET it) is made.
Fig. 5, Fig. 6 and Figure 10 are please referred to, protective case 16 is combined with lens barrel 12, and protective case 16 is used for diffraction-limited optical element
15 position, specifically, protective case 16 can stop diffraction optical element 15 to move along the light direction of laser projection mould group 10.
Protective case 16 includes protection roof 161 and protective side wall 162.
Protection roof 161 is capable of the position of diffraction-limited optical element 15, and specifically, protection roof 161 can stop to spread out
The light direction that optical element 15 is penetrated along laser projection mould group 10 moves.Protection roof 161 offers light hole 1611, light hole
1611 position is corresponding with diffraction optical element 15, and laser passes through collimating element 14, diffraction optical element 15 and light hole 1611
It is projected from laser projection mould group 10 afterwards.In the utility model embodiment, light hole 1611 can in regular polygon, circle,
The shapes such as rectangle, ellipse, trapezoidal.The pore size of light hole 1611 is less than in width or the length of diffraction optical element 15
At least one with protection 161 diffraction-limited optical element 15 of roof position.In the embodiment illustrated in fig. 6, work as protection
When set 16 is combined with lens barrel 12, protection roof 161 offsets with faying face 127.In the embodiment shown in fig. 8, roof is protected
Glue-line 19 is formed between 161 and faying face 127.Protection roof 161 by glue combined with faying face 127 so that protective case 16 and
Lens barrel 12 combines relatively reliable.
Fig. 6, Fig. 9 and Figure 10 are please referred to, the periphery of 162 self-shield roof 161 of protective side wall extends, and protective case 16 is located at
When on lens barrel 12, protective side wall 162 is protruded into sidewall notches 123 and is combined with lens barrel side wall 122.Specifically, protective side wall 162
Including the sub- side wall 1621 of multiple protections being spaced apart.When protective case 16 is located on lens barrel 12, the guiding of sidewall notches 123 is protected
It protects sub- side wall 1621 protective case 16 is mounted in laser projection mould group 10.Protect the inner wall and sidewall notches of sub- side wall 1621
123 slot bottom 1232 combines, and the side wall surface of sub- side wall 161 is protected to be combined with the groove sidewall 1232 of sidewall notches 123, is protected with limiting
Protect the position of sub- side wall 161.Protect sub- side wall 1621 that can also be combined in the form of gluing with lens barrel side wall 122.In this way, protection
Set 16 can be located on lens barrel 12, and protection roof 161 prevents diffraction optical element 15 along the light direction of laser projection mould group 10
It falls off.
To sum up, in the electronic device 1000 of the utility model embodiment, since the protective side wall 162 of protective case 16 protrudes into
For the sidewall notches 123 of lens barrel 12 to be combined protective case 16 with lens barrel 12, the protection roof 161 of protective case 16 can stop diffraction
Optical element 15 is moved along the light direction of laser projection mould group 10, avoids laser without launching after diffraction optical element 15
It goes, protects user, improve safety.
Fig. 6, Fig. 7 and Fig. 9 are please referred to, in some embodiments, lens barrel 12 includes from lens barrel side wall 122 to accommodating chamber
121 projecting inward retention beads 124.Diffraction optical element 15 is mounted in retention bead 124, and be located at retention bead 124 with
It protects between roof 161.Specifically, retention bead 124 can include multiple in continuous cyclic annular or retention bead 124, more
A retention bead 124 is spaced apart.Retention bead 124 surrounded unthreaded hole 1241, and crossing unthreaded hole 1241 can be used as accommodating chamber 121
A part, laser penetrated diffraction optical element 15 after passing through unthreaded hole 1241.It is corresponding with light hole 1611 to cross unthreaded hole 1241.Laser
It is pierced by after passing through diffraction optical element 15 from light hole 1611.In the embodiment illustrated in fig. 6, retention bead 124 is located at
Between second face 126 and faying face 127, the accommodating chamber 121 between retention bead 124 and the first face 125, which can be used for accommodating, to spread out
Penetrate optical element 15.One of curved surface of collimating element 14 protruded into unthreaded hole 1241.Meanwhile in assembling laser projection mould group
When 10, when diffraction optical element 15 and retention bead 124 offset, it is believed that diffraction optical element 15 is installed in place, and works as collimation
Element 14 offsets with retention bead 124, it is believed that collimating element 14 is installed in place.
Fig. 6 and Fig. 9 are please referred to, in some embodiments, lens barrel side wall 122 is also provided with limiting slot 128, specifically,
Limiting slot 128 is provided with the slot bottom 1231 of sidewall notches 123.Limiting slot 128 can be located at the central location of slot bottom 1231.Protection
Set 16 includes the hook 163 of the inwardly projecting elasticity of self-shield side wall 162.The quantity phase of the quantity of hook 163 and limiting slot 128
Same and position is corresponding, and each hook 163 protrudes into corresponding limiting slot 128.Specifically, hook 163 has certain elasticity,
During protective case 16 is located on lens barrel 12, hook 163 protrudes into limiting slot 128 and engages with limiting slot 128, i.e. hook
163 occur elastic deformation, and mutually support with the side wall of limiting slot 128.It is appreciated that when protective case 16 is located on lens barrel 12
Afterwards, in the case where not applying external force and moving protective side wall 162 along 10 light direction of laser projection mould group, due to hook 163
Position-limiting action, protective case 16 can be located at always on lens barrel 12 and make protect roof 161 prevent diffraction optical element 15 from
Deviate from lens barrel 12.
Fig. 6, Fig. 9 and Figure 10 are please referred to, in some embodiments, hook 163 includes interconnecting piece 1631, extension 1632
With support division 1633.Limiting slot 128 is by limit bottom wall 1281 and 1282 shape of limit side wall extended from limit 1281 periphery of bottom wall
At.
Specifically, interconnecting piece 1631 is connect with protective side wall 162, and extension 1632 is connect with interconnecting piece 1631, support division
1633 connect with extension 1632, and in other words protective side wall 162, interconnecting piece 1631, extension 1632, support division 1633 be successively
Connection.Internal stretch of the sub- side wall 1621 of 1632 self-shield of extension to protective case 16, the sub- side wall of 1633 self-shield of support division
1621 extend to the external of protective case 16.Angle between extension 1632 and interconnecting piece 1631 is obtuse angle, support division 1633 with
Angle between extension 1632 is right angle or obtuse angle.During protective case 16 is located on lens barrel 12, extension
1632 support with limit bottom wall 1281, until extension 1632 and support division 1633 protrude into limiting slot 128, hook 163 with
Limiting slot 128 cooperates.Since extension 1632 and support division 1633 all have certain elasticity, elastic shape occurs for extension 1632
Become and towards far from limiting slot 128 Direction distortion, support division 1633 and the limit bottom wall 1281 of limiting slot 128 offset.Work as installation
When in place, support division 1633 is supported on the limit side wall 1282 in limiting slot 128 close to faying face 127, to limit protective case
16 are detached from lens barrel 12.When to take out protective case 16 from lens barrel 12, stirs support division 1633 and allow extension 1632 towards separate
Deformation occurs in the direction of limiting slot 128, until extension 1632 and support division 1633 are stretched out from limiting slot 128, that is, supports
Hook 163 is opened, protective case 16 is extracted in the direction for going out light yet further along laser projection mould group 10.In this way, guaranteeing protective case
16 and lens barrel 12 combination it is more reliable while, be also easy to remove protective case 16 from lens barrel 12.
Fig. 6 and Figure 10 are please referred to, in some embodiments, protective side wall 162 is opened up in position corresponding with hook 163
There are avoid holes 164.During protective case 16 is located at lens barrel 12, hook 163 offsets with limiting slot 128 and hook 163 is sent out
When raw elastic deformation, avoid holes 164 provide deformation space for the elastic deformation of hook 163, that is, elastic deformation occurs for hook 163
And protrude into avoid holes 164.Specifically, when hook 163 and limiting slot 128 offset, elastic deformation, hook occur outward for hook 163
163, which protrude into avoid holes 164, occurs movement interference to avoid with protective side wall 162, in addition, being also convenient for user passes through avoid holes 164
Observe hook 163 and limiting slot 128 mated condition, such as judge whether all hooks 163 with corresponding limiting slot
128 engagings are good.
Fig. 7, Fig. 9 and Figure 10 are please referred to, in some embodiments, lens barrel 12 further includes the limit that self-bonding face 127 is protruded
Parallactic angle 129, protective side wall 162 include multiple sub- side walls 1621 of protection, and protection roof 161 offers spacing breach 165, and limit lacks
Two adjacent sub- side walls 1621 of protection of 165 interval of mouth, limit angle 129 and spacing breach 165 cooperate.
Specifically, limit angle 129 is located at the peripheral position of faying face 127.The top surface of limit angle 129 can be the first face
125.When protective case 16 is set on lens barrel 12, protection roof 161 is located between the top surface and faying face 127 of limit angle 129.
The periphery of protection roof 161 offers spacing breach 165, and spacing breach 165 and limit angle 129 cooperate to limit protection roof
161 position, avoid protection roof 161 translated on faying face 127, and be convenient for user will protect sub- side wall 1621 along
The side wall surface of sidewall notches 123 protrudes into sidewall notches 123.
Fig. 8 and Fig. 9 are please referred to, in some embodiments, retention bead 124 includes confined planes 1242, diffraction optics member
Part 15 is mounted on confined planes 1242.The bottom surface of diffraction optical element 15 is combined with confined planes 1242.Diffraction optical element 15
Top surface can be flushed with faying face 127, can also be slightly below faying face 127.Lens barrel 12 is formed in the periphery of retention bead 124
Mounting groove 1243.Specifically, mounting groove 1243 open up confined planes 1242 periphery, be easily installed and take out diffraction optical element
15.For example, when diffraction optical element 15 damages, for example diffraction pattern is unintelligible, due to mounting groove 1243 and diffraction light
The gap learned between element 15 is larger, easily can take out diffraction optical element 15 from mounting groove 1243.Mounting groove 1243
Quantity can be multiple, and multiple mounting grooves 1243 were evenly distributed on week of unthreaded hole 1241 centered on the axis for crossing unthreaded hole 1261
Edge, in this way, diffraction optical element 15 can smoothly be taken out.
Figure 11 is please referred to, in some embodiments, light source 13 includes edge-emitting laser (edge-emitting
Laser, EEL) 131, specifically, edge-emitting laser 131 can be distributed feedback laser (Distributed
Feedback Laser, DFB).Edge-emitting laser 131 is whole to be in the form of a column, and edge-emitting laser 131 is far from board unit 11
One end face is formed with light-emitting surface 1311, and laser is issued from light-emitting surface 1311, and light-emitting surface 1311 is towards collimating element 14.Using side
Emitting laser 131 is used as light source 13, and one side edge-emitting laser 131 is smaller compared with the temperature drift of VCSEL array, on the other hand,
Since edge-emitting laser 131 is single-point light emitting structure, it is not necessarily to array of designs structure, production is simple, laser projection mould group 10
Cost is relatively low for light source 13.
Figure 11 and Figure 12 are please referred to, in some embodiments, laser projection mould group 10 further includes fixing piece 18, fixing piece
18 for being fixed on board unit 11 for edge-emitting laser 131.The laser of distributed feedback laser passes through when propagating
The feedback of optical grating construction obtains the gain of power.The power for improving distributed feedback laser is needed by increasing injection electricity
Stream and/or the length for increasing distributed feedback laser can make the function of distributed feedback laser due to increasing Injection Current
Consumption increases and serious problem of generating heat occurs, and therefore, in order to guarantee that distributed feedback laser can work normally, needs to increase
The length for adding distributed feedback laser causes distributed feedback laser generally in elongate strip structure.Work as edge-emitting laser
When 131 light-emitting surface 1311 is towards collimating element 14, edge-emitting laser 131 is placed in vertical, due to edge-emitting laser 131
In elongate strip structure, edge-emitting laser 131, which is easy to appear, to be fallen, shift or shakes etc. surprisingly, therefore passes through setting fixing piece
18 can fix edge-emitting laser 131, prevent edge-emitting laser 131 fall, shift or shake etc. it is unexpected.
Specifically, Figure 12 is please referred to, in some embodiments, fixing piece 18 includes sealing 181, and the setting of sealing 181 exists
Between edge-emitting laser 131 and board unit 11.More specifically, in example as shown in figure 12, edge-emitting laser 131
Opposite with light-emitting surface 1311 be bonded on board unit 11 on one side.In example as shown in fig. 13 that, edge-emitting laser
131 side 1312 can also be bonded on board unit 11, and sealing 181 wraps the side 1312 of surrounding, can also only be glued
Some face of knot side 1312 and board unit 11 bond certain several face and board unit 11.Further, sealing 181 can
Think heat-conducting glue, the heat that the work of light source 13 generates is conducted into board unit 11.In order to improve radiating efficiency, substrate
Heat release hole 1111 can also be offered on 111, the heat that light source 13 or the work of circuit board 112 generate can be dissipated by heat release hole 1111
Out, heat-conducting glue can also be filled in heat release hole 1111, to further increase the heat dissipation performance of board unit 11.
Figure 14 is please referred to, in some embodiments, fixing piece 18 includes at least two be arranged on board unit 11
Accommodating space 183 is collectively formed in flexible supporting frames 182, at least two support frames 182, and accommodating space 183 is for accommodating edge emitting
Laser 131, at least two support frames 182 are used to support edge-emitting laser 131, to further prevent edge-emitting laser
131 shake.
In some embodiments, substrate 111 can save, and light source 13 can be directly anchored on circuit board 112 to subtract
The integral thickness of small laser projecting apparatus 10.
In the description of this specification, reference term " certain embodiments ", " embodiment ", " some embodiment party
The description of formula ", " exemplary embodiment ", " example ", " specific example " or " some examples " means in conjunction with the embodiment
Or example particular features, structures, materials, or characteristics described are contained at least one embodiment of the utility model or show
In example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or example.And
And particular features, structures, materials, or characteristics described can be in any one or more embodiments or example to close
Suitable mode combines.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one described feature.The meaning of " plurality " is at least two, such as two in the description of the present invention,
It is a, three, unless otherwise specifically defined.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
It inside can make changes, modifications, alterations, and variations to the above described embodiments, the scope of the utility model is by claim and its is equal
Object limits.
Claims (13)
1. a kind of laser projection mould group, which is characterized in that including：
Board unit；
Lens barrel, the lens barrel are arranged on the board unit and accommodating chamber, the lens barrel are collectively formed with the board unit
Including lens barrel side wall, the lens barrel side wall is formed with sidewall notches；
Light source, the light source are arranged on the board unit and for emitting laser to the accommodating chamber；
Collimating element, the collimating element are housed in the accommodating chamber；
Diffraction optical element, the diffraction optical element are housed in the accommodating chamber, the light source, the collimating element and institute
Diffraction optical element is stated to be successively set in the optical path of the light source；With
Protective case, the protective case include the protective side wall protecting roof and extending from the protection roof, the protection roof
Light hole is offered, the light hole is corresponding with the diffraction optical element, and the protective side wall protrudes into the sidewall notches simultaneously
In conjunction with the lens barrel side wall, the protective case can stop the diffraction optical element to go out light along the laser projection mould group
Direction is mobile.
2. laser projection mould group according to claim 1, which is characterized in that the lens barrel include from the lens barrel side wall to
The projecting inward retention bead of the accommodating chamber, the diffraction optical element are mounted in the retention bead, and are located at the limit
Between position protrusion and the protection roof.
3. laser projection mould group according to claim 2, which is characterized in that the lens barrel includes opposite the first face and
Two faces, second face in conjunction with the board unit, the lens barrel further include be located at first face and second face it
Between faying face, for the protection roof in conjunction with the faying face, the retention bead is located at second face and the combination
Between face, the protection roof is between the faying face and first face.
4. laser projection mould group according to claim 2, which is characterized in that the retention bead includes confined planes, described
Diffraction optical element is mounted on the confined planes, and the retention bead offered unthreaded hole, described to cross unthreaded hole and the light passing
Hole is corresponding.
5. laser projection mould group according to claim 1, which is characterized in that the lens barrel side wall is also provided with limiting slot,
The limiting slot is provided with the slot bottom of the sidewall notches, and the protective case includes the elasticity inwardly projecting from the protective side wall
Hook, the hook protrudes into the limiting slot to engage with the limiting slot.
6. laser projection mould group according to claim 5, which is characterized in that the protective side wall is corresponding with the hook
Position offers avoid holes, and the avoid holes are used for during the protective case is located at the lens barrel, the hook with
The slot bottom offsets and the hook occurs to provide deformation space when elastic deformation.
7. laser projection mould group according to claim 1, which is characterized in that the lens barrel includes faying face, the protection
For roof in conjunction with the faying face, the lens barrel further includes the limit angle protruded from the faying face, and the protective side wall includes
Multiple sub- side walls of protection, the protection roof offer spacing breach, two adjacent protections of the spacing breach interval
Sub- side wall, the limit angle and the spacing breach cooperate.
8. laser projection mould group according to claim 1, which is characterized in that the light source includes edge-emitting laser, institute
Stating edge-emitting laser includes light-emitting surface, and the light-emitting surface is towards the collimating element.
9. laser projection mould group according to claim 8, which is characterized in that the laser projection mould group further includes fixing
Part, the fixing piece are used to the edge-emitting laser being fixed on the board unit.
10. laser projection mould group according to claim 9, which is characterized in that the fixing piece includes sealing, the sealing
It is arranged between the edge-emitting laser and the board unit, the sealing is heat-conducting glue.
11. laser projection mould group according to claim 9, which is characterized in that the fixing piece includes being arranged in the base
Accommodating space, the accommodating space is collectively formed at least two flexible supporting frames on board group part, at least two support frames as described above
For accommodating the edge-emitting laser, at least two support frames as described above are used to support residence and state edge-emitting laser.
12. a kind of depth camera, which is characterized in that including：
Laser projection mould group described in claim 1-11 any one；
Image acquisition device, described image collector is for acquiring the laser projected from the laser projection mould group into object space
Pattern；With
The processor connecting respectively with the laser projection mould group and described image collector, the processor are described for handling
Laser pattern is to obtain depth image.
13. a kind of electronic device, which is characterized in that including：
Shell；With
Depth camera described in claim 12, the depth camera are arranged in the shell and from shell exposure to obtain
Take depth image.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820280990.2U CN208110223U (en) | 2018-02-27 | 2018-02-27 | Laser projection mould group, depth camera and electronic device |
| EP19752412.7A EP3572769A4 (en) | 2018-02-27 | 2019-01-30 | Laser projection module, depth camera, and electronic device |
| PCT/CN2019/073949 WO2019165879A1 (en) | 2018-02-27 | 2019-01-30 | Laser projection module, depth camera, and electronic device |
| US16/484,705 US11525669B2 (en) | 2018-02-27 | 2019-01-30 | Laser projection module, depth camera and electronic device |
| TW108106939A TWI771569B (en) | 2018-02-27 | 2019-02-27 | Laser projection module , depth camera and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820280990.2U CN208110223U (en) | 2018-02-27 | 2018-02-27 | Laser projection mould group, depth camera and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208110223U true CN208110223U (en) | 2018-11-16 |
Family
ID=64124814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820280990.2U Expired - Fee Related CN208110223U (en) | 2018-02-27 | 2018-02-27 | Laser projection mould group, depth camera and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208110223U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344374A (en) * | 2018-02-27 | 2018-07-31 | 广东欧珀移动通信有限公司 | Laser projection module, depth camera and electronic device |
| CN112558259A (en) * | 2019-09-09 | 2021-03-26 | 宁波舜宇光电信息有限公司 | Assembling method of laser projection module |
-
2018
- 2018-02-27 CN CN201820280990.2U patent/CN208110223U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344374A (en) * | 2018-02-27 | 2018-07-31 | 广东欧珀移动通信有限公司 | Laser projection module, depth camera and electronic device |
| CN112558259A (en) * | 2019-09-09 | 2021-03-26 | 宁波舜宇光电信息有限公司 | Assembling method of laser projection module |
| CN112558259B (en) * | 2019-09-09 | 2022-11-15 | 宁波舜宇光电信息有限公司 | Assembling method of laser projection module |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
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