CN109151271A - Laser projection module, control method thereof, image acquisition equipment and electronic device - Google Patents
Laser projection module, control method thereof, image acquisition equipment and electronic device Download PDFInfo
- Publication number
- CN109151271A CN109151271A CN201810963384.5A CN201810963384A CN109151271A CN 109151271 A CN109151271 A CN 109151271A CN 201810963384 A CN201810963384 A CN 201810963384A CN 109151271 A CN109151271 A CN 109151271A
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- Prior art keywords
- diffuser
- laser
- light source
- light
- laser projection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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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
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
- G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses a laser projection module, a control method of the laser projection module, a depth image acquisition device and an electronic device. The laser projection module comprises a light source, a diffuser, a light detector and a processor. The light source is used for emitting laser. The diffuser is used to diffuse the laser light. The photodetector is used for receiving the laser light reflected back by the diffuser to form a photodetection electrical signal. The processor is used for determining whether the diffuser is abnormal or not according to the light detection signal. The laser projection module, the control method of the laser projection module, the depth image acquisition equipment and the electronic device of the embodiment of the invention set the light detector on the laser projection module and determine whether the diffuser is abnormal or not based on the light detection electric signal output by the light detector, so that countermeasures such as turning off the light source, reducing the driving current of the light source and the like can be taken when the diffuser is abnormal, thereby improving the safety of the use of users.
Description
Technical field
The present invention relates to 3 dimension imaging technology field, in particular to a kind of control of laser projection mould group, laser projection mould group
Method, depth image acquisition equipment and electronic device processed.
Background technique
Flight time (Time of Flight, TOF) imaging system can emit optical signal by calculating laser projection mould group
At the time of, at the time of receiving optical signal with optical receiver between time difference calculate the depth information of testee.Laser
Projective module group generally includes light source and diffuser.The light that light source issues projects after the diffusion of diffuser into scene uniform
Face light.In diffuser exception, the illumination of outgoing, which is mapped to user, may bring safety problem.
Summary of the invention
The embodiment provides a kind of laser projection mould groups, the control method of laser projection mould group, depth image
Obtain equipment and electronic device.
The laser projection mould group of embodiment of the present invention includes light source, diffuser, photodetector and processor.The light source
For emitting laser.The diffuser is for spreading the laser.The photodetector is reflected for receiving by the diffuser
The laser returned is to form light detection electric signal.The processor is used to whether determine the diffuser according to the light detecting signal
It is abnormal.
The control method of the laser projection mould group of embodiment of the present invention, the laser projection mould group include light source, diffusion
Device and photodetector, the light source is for emitting laser, and for spreading the laser, the photodetector is used for the diffuser
It receives by laser that the diffuser is reflected back to form light detection electric signal.The control method includes: to obtain the light inspection
Survey the light detection electric signal of device output；Determine whether the diffuser is abnormal according to the light detecting signal.
It includes above-mentioned laser projection mould group and optical receiver that the depth image of embodiment of the present invention, which obtains equipment,.It is described
Optical receiver is used to receive the laser emitted by the laser projection mould group.
The electronic device of embodiment of the present invention includes that shell and above-mentioned depth image obtain equipment.The depth image
Obtain equipment setting on the housing.
The laser projection mould group of embodiment of the present invention, the control method of laser projection mould group, depth image obtain equipment
With electronic device by being arranged photodetector in laser projection mould group, and the light detection electric signal based on photodetector output come
Determine whether diffuser is abnormal, so as to take counter-measure in diffuser exception, such as closes light source, turns down light source
Driving current etc., to promote the safety that user uses.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 and Fig. 2 is the schematic perspective view of the electronic device of certain embodiments of the present invention.
Fig. 3 is that the depth image of certain embodiments of the present invention obtains the schematic perspective view of equipment.
Fig. 4 is that the depth image of certain embodiments of the present invention obtains the planar structure schematic diagram of equipment.
Fig. 5 is that the depth image in Fig. 4 obtains equipment along the schematic cross-section of V-V line.
Fig. 6 is the structural schematic diagram of the laser projection mould group of certain embodiments of the present invention.
Fig. 7 is the arrangement schematic diagram of the photodetector of certain embodiments of the present invention.
Fig. 8 to Figure 11 is the flow diagram of the control method of the laser projection mould group of certain embodiments of the present invention.
Specific embodiment
Embodiments of the present invention are described further below in conjunction with attached drawing.Same or similar label is from beginning in attached drawing
To the same or similar element of expression or element with the same or similar functions eventually.
In addition, the embodiments of the present invention described with reference to the accompanying drawing are exemplary, for explaining only the invention
Embodiment, and be not considered as limiting the invention.
Also referring to Fig. 1 and Fig. 2, the electronic device 800 of embodiment of the present invention includes that shell 801 and depth image obtain
Take equipment 300.Electronic device 800 can be mobile phone, tablet computer, game machine, smartwatch, Intelligent bracelet, head and show equipment, nothing
It is man-machine etc..Embodiment of the present invention is illustrated so that electronic device 800 is mobile phone as an example, it will be understood that the tool of electronic device 800
Body form is not limited to mobile phone.
Shell 801 can be used as the installation carrier of the function element of electronic device 800.Shell 801 can be function element
The protection such as dust-proof, shatter-resistant, waterproof is provided, function element can be display screen 802, visible image capturing head 400, receiver etc..?
In the embodiment of the present invention, shell 801 includes main body 803 and movable support 804, and movable support 804 is under the drive of the drive
It can be moved relative to main body 803, such as movable support 804 can be slided relative to main body 803, to slide into main body 803 (as schemed
Shown in 1) or from main body 803 skid off (as shown in Figure 2).Partial function element (such as display screen 802) may be mounted at main body 803
On, another part function element (such as depth image obtains equipment 300, visible image capturing head 400, receiver) may be mounted at
On movable support 804, the movement of movable support 804 can drive another part function element to retract in main body 803 or from main body 803
Middle stretching.Certainly, it is only to illustrate shown in Fig. 1 and Fig. 2 to a kind of concrete form of shell 801, should not be understood as to the present invention
Shell 801 limitation.
Depth image obtains equipment 300 and is mounted on shell 801.Specifically, collecting window can be offered on shell 801
Mouthful, depth image obtains equipment 300 and is directed at installation with acquisition window so that depth image obtains 300 sampling depth information of equipment.
In a specific embodiment of the present invention, depth image obtains equipment 300 and is mounted on movable support 804.User need using
When depth image obtains equipment 300, movable support 804 can be triggered and skidded off from main body 803 to drive depth image acquisition to set
Standby 300 stretch out from main body 803；When not needing to obtain equipment 300 using depth image, it is sliding that movable support 804 can be triggered
Enter main body 803 to drive depth image to obtain equipment 300 and retract in main body.In the real-time example of the present invention, depth image obtains equipment
300 be flight time (Time of Flight, TOF) depth camera.Certainly, be only shown in Fig. 1 and Fig. 2 to shell 801 one
The citing of kind concrete form, should not be understood as the limitation to shell 801 of the invention, such as in another example, shell 801
On the acquisition window that opens up can be fixed, depth image obtains the fixed setting of equipment 300 and is aligned with acquisition window；
In another example, depth image obtains the lower section that equipment 300 is fixed at display screen 802.
Also referring to Fig. 3 to Fig. 5, it includes first substrate component 71, cushion block 72, laser that depth image, which obtains equipment 300,
Projective module group 100 and optical receiver 200.First substrate component 71 includes the first substrate 711 and flexible circuit board interconnected
712.Cushion block 72 is arranged on first substrate 711.Laser projection mould group 100 for projecting laser, laser projection mould group 100 outward
It is arranged on cushion block 72.One end of the bending of flexible circuit board 712 and flexible circuit board 712 connects first substrate 711, and the other end connects
Connect laser projection mould group 100.Optical receiver 200 is arranged on first substrate 711, and optical receiver 200 is for receiving by target empty
Between in people or the laser that is reflected back of object.Optical receiver 200 includes shell 741 and the optical element being arranged on shell 741
742.Shell 741 links into an integrated entity with cushion block 72.
Specifically, first substrate component 71 includes first substrate 711 and flexible circuit board 712.First substrate 711 can be
Printed wiring board or flexible circuit board.The control route etc. that depth image obtains equipment 300 can be equipped on first substrate 71.
One end of flexible circuit board 712 can connect on first substrate 711, and the other end of flexible circuit board 712 is connected to circuit board
On 50 (shown in Fig. 5).The bending of certain angle can occur for flexible circuit board 712, so that the both ends of flexible circuit board 712 connect
The relative position of device can have compared with more options.
Cushion block 72 is arranged on first substrate 711.In one example, cushion block 72 is contacted and is carried with first substrate 711
On first substrate 711, specifically, cushion block 72 can be combined by modes such as gluings with first substrate 711.The material of cushion block 72
It can be metal, plastics etc..In an embodiment of the present invention, the face that cushion block 72 is combined with first substrate 711 can be plane, pad
The opposite face in face of the block 72 in conjunction with this is also possible to plane, so that the setting of laser projection mould group 100 has when on cushion block 72
Preferable stationarity.
Optical receiver 200 is arranged on first substrate 711, and the contact surface and pad of optical receiver 200 and first substrate 711
The contact surface of block 72 and first substrate 711 is substantially flush setting (that is, the start of installation of the two is in the same plane).Specifically,
Optical receiver 200 includes shell 741 and optical element 742.Shell 741 is arranged on first substrate 711, and optical element 742 is set
It sets on shell 741, shell 741 can be the microscope base and lens barrel of optical receiver 200, and optical element 742 can be setting outside
The elements such as the lens in shell 741.Further, optical receiver 200 further includes sensitive chip (not shown), by object space
The laser that people or object are reflected back is irradiated in sensitive chip after passing through optical element 742, and sensitive chip generates response to the laser.
In an embodiment of the present invention, shell 741 links into an integrated entity with cushion block 72.Specifically, shell 741 and cushion block 72 can be one
Molding；Or shell 741 is different from the material of cushion block 72, the two is integrally formed by modes such as double-shot mouldings.Shell 741 and pad
Block 72 is also possible to be separately formed, and the two forms fit structure, can first will be outer when assembling depth image and obtaining equipment 300
One in shell 741 and cushion block 72 is arranged on first substrate 711, then another is arranged on first substrate 711 and is connected
Integrally.
In this way, being arranged laser projection mould group 100 on cushion block 72, cushion block 72 can be with padded laser projection mould group 100
Highly, and then the height in the face of raising 100 shoot laser of laser projection mould group, the laser that laser projection mould group 100 emits are not easy
It is blocked by optical receiver 200, laser is irradiated to completely on the testee in object space.
Incorporated by reference to Fig. 6, optical receiver 100 includes light source 10, diffuser 20, lens barrel 30, protective cover 40, circuit board 50, drives
Dynamic device 61, photodetector 63 and processor 65.
Lens barrel 30 includes lens barrel side wall 33 annular in shape, and cricoid lens barrel side wall 33 surrounds accommodating chamber 62.Lens barrel side wall 33
Including the inner surface 331 being located in accommodating chamber 62 and the outer surface 332 opposite with inner surface.Lens barrel side wall 33 includes opposite the
On one side 31 and second face 32.Accommodating chamber 62 runs through the first face 31 and the second face 32.First face 31 towards the second face 32 recess formed with
The mounting groove 34 that accommodating chamber 62 is connected to.The bottom surface 35 of mounting groove 34 is located at the side far from the first face 31 of mounting groove 34.Lens barrel
The outer surface 332 of side wall 33 is in the circular in cross-section of the one end in the first face 31, and the outer surface 332 of lens barrel side wall 33 is in the first face
31 one end is formed with external screw thread.
Circuit board 50 is arranged on the second face 32 of lens barrel 30 and closes one end of accommodating chamber 62.Circuit board 50 can be soft
Property circuit board or printed circuit board.
Light source 10 is carried on circuit board 50 and is housed in accommodating chamber 62.Light source 10 is used for towards the first face 31 of lens barrel 30
(mounting groove 34) side emits laser.Light source 10 can be point light source of single, can also be multi-point source.It is point light source of single in light source 10
When, light source 10 is specifically as follows edge-emitting lasers, such as can be distributed feedback laser (Distributed
Feedback Laser, DFB) etc.；When light source 10 is multi-point source, light source 10 is specifically as follows vertical-cavity surface-emitting device
(Vertical-Cavity Surface Laser, VCSEL) or light source 10 can also be for by multiple edge-emitting lasers groups
At multi-point source.The height of vertical cavity surface emitting laser is smaller, using vertical-cavity surface-emitting device as light source 10, is conducive to
Reduce laser projection mould group 100 height, convenient for by laser projection mould group 100 be integrated into mobile phone etc. have to fuselage thickness it is higher
It is required that electronic device 800 in.Compared with vertical-cavity surface-emitting device, the temperature drift of edge-emitting lasers is smaller, can reduce temperature
Spend the influence of the effect of the projection laser to light source 10.
Driver 61 is carried on circuit board 50 and is electrically connected with light source 10.Specifically, driver 61 can receive through
The input signal of the modulation of processor 65 is crossed, and is transferred to light source 10 after converting constant current source for input signal, so that light
Source 10 emits laser towards 31 side of the first face of lens barrel 30 under the action of constant current source.The driver 61 of present embodiment
It is arranged outside lens barrel 30.In other embodiments, driver 61 can be set in lens barrel 30 and be carried on circuit board 50.
It is in mounting groove 34 and inconsistent with mounting groove 34 that diffuser 20 installs (carrying).Diffuser 20 is for diffusing through
The laser of diffuser 20.It that is to say, when light source 10 emits laser towards 31 side of the first face of lens barrel 30, laser can pass through diffuser
It 20 and is spread or is projected outside lens barrel 30 by diffuser 20.
Protective cover 40 includes roof 41 and the protective side wall 42 extended to form from the side of roof 41.It opens at the center of roof 41
Equipped with light hole 401.Protective side wall 42 is arranged around roof 41 and light hole 401.Roof 41 surrounds jointly with protective side wall 42
Installation cavity 43, light hole 401 are connected to installation cavity 43.The circular in cross-section of the inner surface of protective side wall 42, protective side wall 42
Inner surface on be formed with internal screw thread.The external thread spiro fastening of the internal screw thread of protective side wall 42 and lens barrel 30 is to install protective cover 40
On lens barrel 30.The conflict of roof 41 and diffuser 20 is so that diffuser 40 is clamped in the bottom surface 35 of roof 41 Yu mounting groove 34
Between.
In this way, being mounted in mounting groove 34 by opening up mounting groove 34 on lens barrel 30, and by diffuser 20, and pass through
Protective cover 40 is mounted on diffuser 20 to be clamped between protective cover 40 and the bottom surface 35 of mounting groove 34 on lens barrel 30, thus real
Now diffuser 20 is fixed on lens barrel 30.Diffuser 20 is fixed on lens barrel 30 by such mode without using glue, can
After avoiding glue from being volatilized into gaseous state, gaseous glue spreads and is set in the surface of diffuser 20 and influences the microcosmic of diffuser 20
Structure, and diffuser 20 is de- from lens barrel 30 when the glue that can be avoided diffuser 20 and lens barrel 30 declines adhesion strength because of aging
It falls.
Continuing with Fig. 6 is combined, photodetector 63 is arranged on circuit board 50, and is housed in accommodating chamber 62.Diffuser 20
Light transmittance be generally unable to reach 100%, the laser overwhelming majority that light source 10 emits can be spread out by diffuser 20, but small
Fraction of laser light can be reflected by diffuser 20.Photodetector 63 can be used for receiving the laser that diffuser 20 is reflected back.Photodetector 63
It will form the output of light detection electric signal after receiving the laser that diffuser 20 is reflected back.Processor 65 can receive photodetector 63
The light detection electric signal of output simultaneously determines whether diffuser 20 is abnormal according to light detection electric signal.
Specifically, processor 65 can be used for judging whether light detecting signal exceeds preset range, super in light detecting signal
The reason of out when preset range, the laser for illustrating that photodetector 63 receives is more or less, this phenomenon occurs may be to expand
It dissipates the dirty laser for leading to outgoing of device 20 to reduce, the laser of reflected light detector 63 increases or the rupture of diffuser 20 is led
The laser of outgoing is caused to increase, the laser of reflected light detector 63, which is reduced, or diffuser 20 falls off causes laser substantially complete
Portion is emitted, and the laser of reflected light detector 63 is substantially zeroed etc..In other words, exceed preset range in light detecting signal
When, it can be determined that diffuser 20 is abnormal.When light detecting signal is in preset range, it can be determined that diffuser 20 is normal.
In addition, the laser energy that light source 10 emits is also larger, and photodetector 63 connects when the driving current of light source 10 is larger
The laser received is also more, and when the driving current of light source 10 is smaller, the laser energy that light source 10 emits is also smaller, photodetector
63 laser that receive are also less, and therefore, in order to improve the accuracy of the abnormal judgement of diffuser 20, processor 65 can basis
The driving current of light detecting signal and light source 10 determines whether diffuser 20 is abnormal.Specifically, processor 65 can be according to light source
10 driving current determines preset range, such as the driving current of light source 10 is 1 peace, is obtaining diffuser 20 just by experiment at this time
The electric current for the light detecting signal that photodetector 63 is formed when often is 600 microamperes, therefore for example preset range can be determined as 400
Microampere is to 800 microamperes.It is appreciated that above-mentioned 1A, 600 microamperes, 400 microamperes to 800 microamperes etc. be exemplary illustration.According to drive
After streaming current determines preset range, can determine whether diffuser 20 is different further according to determining preset range and light detecting signal
Often.
Further, when diffuser 20 is abnormal, processor 65 can turn down the driving current or directly control of light source 10
Light source 10 processed is closed, to avoid the laser energy of outgoing excessively high, is damaged to the human eye of user.In addition, in diffuser 20
When abnormal, laser projection mould group 100 generally be can not work normally, and unnecessary power consumption can be reduced by closing light source 10.
To sum up, the laser projection mould group 100 of embodiment of the present invention, depth image obtain equipment 300 and electronic device 800
By the way that photodetector 63 is arranged in laser projection mould group 100, and based on the light detection electric signal that photodetector 63 exports come next
Determine whether diffuser 20 is abnormal, so as to take counter-measure when diffuser 20 is abnormal, such as closes light source 10, turns down
The driving current etc. of light source 10, to promote the safety that user uses.
Referring to Fig. 7, in some embodiments, the quantity of photodetector 63 be it is multiple, multiple photodetectors 63 are surround
Light source 10 is centrosymmetric setting.In this way, multiple photodetectors 63 can receive more laser that diffuser 20 is reflected back.
After processor 65 receives multiple light detection electric signals, first the summation of multiple light detection electric signals is averaged to obtain multiple light detections
The average value of electric signal, then the average value of light detection electric signal is made comparisons with preset range, if light detection electric signal is averaged
Value exceeds preset range, it is determined that diffuser 20 is abnormal；If the average value of light detection electric signal is in preset range, handle
Device 65 does not act.Use multiple setting photodetectors 63 at different locations receive diffuser 20 be reflected back laser can be with
The size of the amount for the laser being reflected back through diffuser 20 is more accurately detected, further can more accurately detect to expand
It whether abnormal dissipates device 20, is conducive to processor 65 and more accurately controls light source 10.
Please again together refering to Fig. 2 to Fig. 5, in some embodiments, the side that cushion block 72 is combined with first substrate 711 is opened
Equipped with accommodating chamber 723.It further includes the electronic component 77 being arranged on first substrate 711 that depth image, which obtains equipment 300,.Electronics member
Part 77 is housed in accommodating chamber 723.Electronic component 77 can be the elements such as capacitor, inductance, transistor, resistance.Electronic component 77
It can be electrically connected with the control route being laid on first substrate 711, and be used for or control laser projection mould group 100 or light-receiving
Device 200 works.Electronic component 77 is housed in accommodating chamber 723, and the space in cushion block 72 is rationally utilized, and does not need increase by first
Electronic component 77 is arranged in the width of substrate 711, is conducive to reduce the overall dimensions that depth image obtains equipment 300.Accommodating chamber
723 quantity can be one or more, accommodating chamber 723 can be apart from one another by.When installing cushion block 72, can will accommodate
Simultaneously cushion block 72 is arranged on first substrate 711 for the position alignment of chamber 723 and electronic component 77.
Please continue to refer to Fig. 2 to Fig. 5, in some embodiments, cushion block 72 is offered to be connected at least one accommodating chamber 723
The evacuation through-hole 724 connect, at least one electronic component 77 protrude into evacuation through-hole 724.It is appreciated that needing electronic component 77
When being housed in evacuation through-hole, it is desirable that the height of electronic component 77 is not higher than the height of accommodating chamber 723.And height is higher than and is held
It receives the electronic component of chamber 723, evacuation through-hole 724 corresponding with accommodating chamber 723 can be opened up, electronic component 77 can partially protrude into
It avoids in through-hole 724, with the arranging electronic element 77 under the premise of not improving the height of cushion block 72.
Please referring also to Fig. 2 to Fig. 5, in some embodiments, first substrate component 711 further includes stiffening plate 713, is reinforced
Plate 713 is incorporated in the side opposite with cushion block 72 of first substrate 711.Stiffening plate 713 can cover one of first substrate 711
Side, stiffening plate 713 can be used for increasing the intensity of first substrate 711, and avoiding first substrate 711, deformation occurs.In addition, reinforcing
Plate 713 can be made of conductive material, such as metal or alloy etc., set when depth image acquisition equipment 300 is mounted on electronics
When on standby 800, stiffening plate 713 can be electrically connected with shell 801, so that stiffening plate 713 is grounded, and efficiently reduce external member
The electrostatic of part obtains the interference of equipment 300 to depth image.
Referring again to Fig. 2 to Fig. 5, in other embodiments, it further includes connector 76 that depth image, which obtains equipment 300,
Connector 76 is connected on first substrate component 71 and electrically connects for obtaining the electronic component outside equipment 300 with depth image
It connects.
Referring to Figure 6 together, Fig. 8 to Figure 11, the present invention also provides a kind of control methods of laser projection mould group 100.
Laser projection mould group 100 is laser projection mould group 100 described in above-mentioned any one embodiment.Control method includes:
01: obtaining the light detection electric signal that photodetector 63 exports；With
03: determining whether diffuser 20 is abnormal according to light detecting signal.
Wherein, step 03 includes:
031: judging whether light detecting signal exceeds preset range；With
032: determining that diffuser 20 is abnormal when light detecting signal exceeds preset range.
Step 03 can also include:
033: determining whether diffuser 20 is abnormal according to the driving current of light detecting signal and light source 10.
Control method is after step 03 further include:
05: when diffuser 20 is abnormal, control light source 10 is closed.
Incorporated by reference to Fig. 6 and Fig. 7, step 01, step 03, step 031, step 032, step 033 and step 05 can be by
Processor 65 is realized.In other words, processor 65 can be used for obtaining photodetector 63 output light detection electric signal and according to
Light detecting signal determines whether diffuser 20 is abnormal.Further, processor 65 can also be used to judge whether light detecting signal surpasses
Out preset range, determine when light detecting signal exceeds preset range diffuser 20 it is abnormal, according to light detecting signal and light source 10
Driving current determine whether diffuser 20 abnormal and control light source 10 is closed when diffuser 20 is abnormal.
It is appreciated that the light transmittance of diffuser 20 is generally unable to reach 100%, the laser overwhelming majority meeting that light source 10 emits
It is spread out by diffuser 20, but fraction laser can be reflected by diffuser 20.Photodetector 63 can be used for receiving diffuser
20 laser being reflected back.Photodetector 63 will form the output of light detection electric signal after receiving the laser that diffuser 20 is reflected back.
Processor 65 can receive the light detection electric signal of the output of photodetector 63 and determine that diffuser 20 is according to light detection electric signal
No exception.
Specifically, processor 65 can be used for judging whether light detecting signal exceeds preset range, super in light detecting signal
The reason of out when preset range, the laser for illustrating that photodetector 63 receives is more or less, this phenomenon occurs may be to expand
It dissipates the dirty laser for leading to outgoing of device 20 to reduce, the laser of reflected light detector 63 increases or the rupture of diffuser 20 is led
The laser of outgoing is caused to increase, the laser of reflected light detector 63, which is reduced, or diffuser 20 falls off causes laser substantially complete
Portion is emitted, and the laser of reflected light detector 63 is substantially zeroed etc..In other words, exceed preset range in light detecting signal
When, it can be determined that diffuser 20 is abnormal.When light detecting signal is in preset range, it can be determined that diffuser 20 is normal.
In addition, the laser energy that light source 10 emits is also larger, and photodetector 63 connects when the driving current of light source 10 is larger
The laser received is also more, and when the driving current of light source 10 is smaller, the laser energy that light source 10 emits is also smaller, photodetector
63 laser that receive are also less, and therefore, in order to improve the accuracy of the abnormal judgement of diffuser 20, processor 65 can basis
The driving current of light detecting signal and light source 10 determines whether diffuser 20 is abnormal.Specifically, processor 65 can be according to light source
10 driving current determines preset range, such as the driving current of light source 10 is 1 peace, is obtaining diffuser 20 just by experiment at this time
The electric current for the light detecting signal that photodetector 63 is formed when often is 600 microamperes, therefore for example preset range can be determined as 400
Microampere is to 800 microamperes.It is appreciated that above-mentioned 1A, 600 microamperes, 400 microamperes to 800 microamperes etc. be exemplary illustration.According to drive
After streaming current determines preset range, can determine whether diffuser 20 is different further according to determining preset range and light detecting signal
Often.
Further, when diffuser 20 is abnormal, processor 65 can turn down the driving current or directly control of light source 10
Light source 10 processed is closed, to avoid the laser energy of outgoing excessively high, is damaged to the human eye of user.In addition, in diffuser 20
When abnormal, laser projection mould group 100 generally be can not work normally, and unnecessary power consumption can be reduced by closing light source 10.
The light detection electricity that the control method of the laser projection mould group 100 of embodiment of the present invention is exported based on photodetector 63
Signal determines whether diffuser 20 is abnormal, so as to take counter-measure when diffuser 20 is abnormal, such as closes light
Source 10, the driving current for turning down light source 10 etc., to promote the safety that user uses.
Referring to Fig. 7, in some embodiments, the quantity of photodetector 63 be it is multiple, multiple photodetectors 63 are surround
Light source 10 is centrosymmetric setting.In this way, multiple photodetectors 63 can receive more laser that diffuser 20 is reflected back.
After processor 65 receives multiple light detection electric signals, first the summation of multiple light detection electric signals is averaged to obtain multiple light detections
The average value of electric signal, then the average value of light detection electric signal is made comparisons with preset range, if light detection electric signal is averaged
Value exceeds preset range, it is determined that diffuser 20 is abnormal；If the average value of light detection electric signal is in preset range, handle
Device 65 does not act.Use multiple setting photodetectors 63 at different locations receive diffuser 20 be reflected back laser can be with
The size of the amount for the laser being reflected back through diffuser 20 is more accurately detected, further can more accurately detect to expand
It whether abnormal dissipates device 20, is conducive to processor 65 and more accurately controls light source 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 or example of the invention.
In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, description
Particular features, structures, materials, or characteristics can be in any one or more embodiments or example with suitable side
Formula 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.In the description of the present invention, the meaning of " plurality " is at least two, such as two,
Three, unless otherwise specifically defined.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant, and the scope of the present invention is defined by the claims and their equivalents.
Claims (11)
1. a kind of laser projection mould group, which is characterized in that the laser projection mould group includes:
Light source, the light source is for emitting laser；
Diffuser, the diffuser is for spreading the laser；
Photodetector, the photodetector is for receiving the laser being reflected back by the diffuser to form light detection electric signal；
And
Processor, the processor are used to determine whether the diffuser is abnormal according to the light detecting signal.
2. laser projection mould group according to claim 1, which is characterized in that the processor is for judging the light detection
Whether signal exceeds preset range, determines that the diffuser is abnormal when the light detecting signal is beyond the preset range.
3. laser projection mould group according to claim 1, which is characterized in that the processor is used for according to the light detection
The driving current of signal and the light source determines whether the diffuser is abnormal.
4. laser projection mould group according to claim 1, which is characterized in that the processor is also used in the diffuser
The light source is controlled when abnormal to close.
5. laser projection mould group according to claim 1, which is characterized in that the photodetector includes multiple, Duo Gesuo
Photodetector is stated to be centrosymmetric setting around the light source.
6. a kind of control method of laser projection mould group, which is characterized in that the laser projection mould group include light source, diffuser and
Photodetector, the light source is for emitting laser, and the diffuser is for spreading the laser, and the photodetector is for receiving
By laser that the diffuser is reflected back to form light detection electric signal；The control method includes:
Obtain the light detection electric signal of the photodetector output；With
Determine whether the diffuser is abnormal according to the light detecting signal.
7. control method according to claim 6, which is characterized in that described to determine the expansion according to the light detecting signal
Scattered device whether include: extremely
Judge whether the light detecting signal exceeds preset range；With
Determine that the diffuser is abnormal when the light detecting signal exceeds the preset range.
8. control method according to claim 6, which is characterized in that described to determine the expansion according to the light detecting signal
Scattered device whether include: extremely
Determine whether the diffuser is abnormal according to the driving current of the light detecting signal and the light source.
9. control method according to claim 6, which is characterized in that the control method further include:
The light source is controlled in the diffuser exception to close.
10. a kind of depth image obtains equipment characterized by comprising
Laser projection mould group described in claim 1 to 5 any one；With
Optical receiver, the optical receiver are used to receive the laser emitted by the laser projection mould group.
11. a kind of electronic device characterized by comprising
Shell；With
Depth image described in any one of claim 10 obtains equipment, and the depth image obtains equipment setting on the housing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810963384.5A CN109151271A (en) | 2018-08-22 | 2018-08-22 | Laser projection module, control method thereof, image acquisition equipment and electronic device |
| PCT/CN2019/090074 WO2020038060A1 (en) | 2018-08-22 | 2019-06-05 | Laser projection module and control method therefor, and image acquisition device and electronic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810963384.5A CN109151271A (en) | 2018-08-22 | 2018-08-22 | Laser projection module, control method thereof, image acquisition equipment and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109151271A true CN109151271A (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810963384.5A Pending CN109151271A (en) | 2018-08-22 | 2018-08-22 | Laser projection module, control method thereof, image acquisition equipment and electronic device |
Country Status (2)
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| CN (1) | CN109151271A (en) |
| WO (1) | WO2020038060A1 (en) |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101137923A (en) * | 2005-04-11 | 2008-03-05 | 松下电器产业株式会社 | tiny mechanical structures |
| US20090201965A1 (en) * | 2008-02-13 | 2009-08-13 | Fuji Xerox Co., Ltd. | Vertical-cavity surface-emitting laser, module, optical transmission device, optical transmission system, free space optical communication device, and free space optical communication system |
| CN102062952A (en) * | 2009-11-15 | 2011-05-18 | 普莱姆森斯有限公司 | Optical projector with beam monitor |
| CN104395848A (en) * | 2012-03-01 | 2015-03-04 | 诺沃皮尼奥内股份有限公司 | Method and system for real time dry low nitrogen oxide (dln) and diffusion combustion monitoring |
| CN108319034A (en) * | 2018-02-27 | 2018-07-24 | 广东欧珀移动通信有限公司 | Laser projection module, depth camera and electronic device |
| CN108333850A (en) * | 2018-02-27 | 2018-07-27 | 广东欧珀移动通信有限公司 | Laser projection module and its damage detection method, depth camera and electronic device |
| CN108344377A (en) * | 2018-03-12 | 2018-07-31 | 广东欧珀移动通信有限公司 | Laser projection module, depth camera and electronic device |
| CN108344378A (en) * | 2018-04-04 | 2018-07-31 | Oppo广东移动通信有限公司 | Laser projection module, damage detection method thereof, depth camera and electronic device |
| CN108387365A (en) * | 2018-02-27 | 2018-08-10 | 广东欧珀移动通信有限公司 | Laser projection module and its damage detection method, depth camera and electronic device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206481367U (en) * | 2017-01-22 | 2017-09-08 | 维沃移动通信有限公司 | A kind of camera module and mobile terminal |
| CN108388062A (en) * | 2018-02-27 | 2018-08-10 | 广东欧珀移动通信有限公司 | Laser projection module, depth camera and electronic device |
| CN109151271A (en) * | 2018-08-22 | 2019-01-04 | Oppo广东移动通信有限公司 | Laser projection module, control method thereof, image acquisition equipment and electronic device |
-
2018
- 2018-08-22 CN CN201810963384.5A patent/CN109151271A/en active Pending
-
2019
- 2019-06-05 WO PCT/CN2019/090074 patent/WO2020038060A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101137923A (en) * | 2005-04-11 | 2008-03-05 | 松下电器产业株式会社 | tiny mechanical structures |
| US20090201965A1 (en) * | 2008-02-13 | 2009-08-13 | Fuji Xerox Co., Ltd. | Vertical-cavity surface-emitting laser, module, optical transmission device, optical transmission system, free space optical communication device, and free space optical communication system |
| CN102062952A (en) * | 2009-11-15 | 2011-05-18 | 普莱姆森斯有限公司 | Optical projector with beam monitor |
| CN104395848A (en) * | 2012-03-01 | 2015-03-04 | 诺沃皮尼奥内股份有限公司 | Method and system for real time dry low nitrogen oxide (dln) and diffusion combustion monitoring |
| CN108319034A (en) * | 2018-02-27 | 2018-07-24 | 广东欧珀移动通信有限公司 | Laser projection module, depth camera and electronic device |
| CN108333850A (en) * | 2018-02-27 | 2018-07-27 | 广东欧珀移动通信有限公司 | Laser projection module and its damage detection method, depth camera and electronic device |
| CN108387365A (en) * | 2018-02-27 | 2018-08-10 | 广东欧珀移动通信有限公司 | Laser projection module and its damage detection method, depth camera and electronic device |
| CN108344377A (en) * | 2018-03-12 | 2018-07-31 | 广东欧珀移动通信有限公司 | Laser projection module, depth camera and electronic device |
| CN108344378A (en) * | 2018-04-04 | 2018-07-31 | Oppo广东移动通信有限公司 | Laser projection module, damage detection method thereof, depth camera and electronic device |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020038067A1 (en) * | 2018-08-22 | 2020-02-27 | Oppo广东移动通信有限公司 | Laser projection module and control method therefor, and depth image acquisition apparatus and electronic device |
| WO2020038060A1 (en) * | 2018-08-22 | 2020-02-27 | Oppo广东移动通信有限公司 | Laser projection module and control method therefor, and image acquisition device and electronic apparatus |
| US11650292B2 (en) | 2019-03-25 | 2023-05-16 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Time of flight assembly for controlling laser light source to be turned off, terminal device and control method for time of flight assembly |
| CN109904718A (en) * | 2019-03-25 | 2019-06-18 | Oppo广东移动通信有限公司 | Control system and control method of time-of-flight assembly and terminal |
| CN109904718B (en) * | 2019-03-25 | 2020-09-04 | Oppo广东移动通信有限公司 | Control system, control method and terminal of time-of-flight component |
| EP3715904A1 (en) * | 2019-03-25 | 2020-09-30 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Time of flight assembly, terminal device and control method for time of flight assembly |
| CN109842704A (en) * | 2019-03-26 | 2019-06-04 | Oppo广东移动通信有限公司 | Optical transmitting set, flight time component and electronic equipment |
| CN109905175A (en) * | 2019-03-26 | 2019-06-18 | Oppo广东移动通信有限公司 | Control system and terminal of time-of-flight subassembly |
| CN109831255A (en) * | 2019-03-26 | 2019-05-31 | Oppo广东移动通信有限公司 | Control system and terminal of time-of-flight subassembly |
| CN112073598A (en) * | 2019-06-10 | 2020-12-11 | 宁波舜宇光电信息有限公司 | Throw module and 3D module of making a video recording |
| CN114096884A (en) * | 2019-08-14 | 2022-02-25 | Oppo广东移动通信有限公司 | Light emitting module, light receiving module, depth camera and electronic equipment |
| EP4002825A4 (en) * | 2019-08-28 | 2023-02-15 | Ningbo Sunny Opotech Co., Ltd. | TOF CAMERA MODULE AND PROJECTION MODULE THEREOF, AND ELECTRONIC DEVICE |
| US12206964B2 (en) | 2019-08-28 | 2025-01-21 | Ningbo Sunny Opotech Co., Ltd. | TOF camera module and projection module thereof, and electronic device |
| US20230078421A1 (en) * | 2020-03-03 | 2023-03-16 | Lg Innotek Co., Ltd. | Distance measuring camera apparatus |
| US12206972B2 (en) * | 2020-03-03 | 2025-01-21 | Lg Innotek Co., Ltd. | Distance measuring camera apparatus |
| CN113419252A (en) * | 2021-06-10 | 2021-09-21 | Oppo广东移动通信有限公司 | Time-of-flight module, terminal and depth detection method |
| CN113596202A (en) * | 2021-07-06 | 2021-11-02 | 维沃移动通信有限公司 | Control method of photosensitive sensor and electronic equipment |
| CN113596202B (en) * | 2021-07-06 | 2024-05-14 | 维沃移动通信有限公司 | Control method of photosensitive sensor and electronic equipment |
| WO2024027007A1 (en) * | 2022-08-01 | 2024-02-08 | 奥比中光科技集团股份有限公司 | Contamination monitoring system of transmitting module, contamination detection method, and related device |
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