CN108966402A - TOF camera module and TOF circuit and its heat dissipating method and manufacturing method and application - Google Patents

TOF camera module and TOF circuit and its heat dissipating method and manufacturing method and application Download PDF

Info

Publication number
CN108966402A
CN108966402A CN201710358130.6A CN201710358130A CN108966402A CN 108966402 A CN108966402 A CN 108966402A CN 201710358130 A CN201710358130 A CN 201710358130A CN 108966402 A CN108966402 A CN 108966402A
Authority
CN
China
Prior art keywords
tof
circuit
module
light source
camera module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710358130.6A
Other languages
Chinese (zh)
Inventor
桑淼辉
鲁丁
罗孟杰
王旭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Sunny Optical Intelligent Technology Co Ltd
Original Assignee
Zhejiang Sunny Optical Intelligent Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Sunny Optical Intelligent Technology Co Ltd filed Critical Zhejiang Sunny Optical Intelligent Technology Co Ltd
Priority to CN201710358130.6A priority Critical patent/CN108966402A/en
Publication of CN108966402A publication Critical patent/CN108966402A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
    • H05K1/0203—Cooling of mounted components
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

TOF camera module and TOF circuit and its heat dissipating method and manufacturing method and application, wherein the TOF circuit includes: a TOF circuit of light sources and a photosensitive circuit；Wherein the TOF circuit of light sources is for driving a TOF light source working to generate light, reflection light of the light through a target and the photosensitive circuit photosensitization, the TOF circuit of light sources and photosensitive circuit cooperation handle the light and reflection light information, deep image information is obtained, predetermined power grade is provided.

Description

TOF camera module and TOF circuit and its heat dissipating method and manufacturing method and application
Technical field
The present invention relates to TOF technical fields, further, are related to a TOF camera module and TOF circuit and its heat dissipating method With manufacturing method and application.
Background technique
TOF (Time Of Flight) technology, that is, sensor issues the near infrared light through ovennodulation, encounters anti-after object It penetrates, sensor is by calculating infrared light transmitting and reflection interval difference or phase difference, to calculate the distance of subject, to produce Raw depth information, and further combined with traditional shooting that connects, so that the three-D profile of object be represented not in different colors The graphics mode of same distance shows.
TOF technology origin it is longer, but in recent years, intellectual technology and virtual reality technology fast development And application, TOF technology and TOF mould group obtain tremendous expansion, become a research hotspot of current technical field of imaging, have Very high researching value and wide application prospect.
By taking traditional TOF camera as an example, TOF camera is during shooting, it is necessary first to which laser emitter issues coding To the object of shooting, when reference object is people, laser needs to expose on human body light, then reflexes to a light by human body Receiving part further calculates time difference or the phase difference of transmitting light and reception light by processor to calculate human body Deep space information, and the imaging of object is obtained by the photosensitization of received light, depth is obtained in conjunction with depth information Spend image information.
In this process, subject, such as people, animal, organism require the irradiation for receiving laser, but Laser may generate some adverse effects, especially life entity for subject, and the size of the power of light source is one Determine the size that influence degree is determined in degree.
On the other hand, laser is a luminescent device, and heat is supervened during luminous, and TOF camera needs Obtained light information is obtained into deep image information by processing of circuit, the heat that laser generates will affect the work of circuit Make, or even when influencing serious, circuit cisco unity malfunction obtains inaccurate information.And when light source power it is bigger, the unit time Calorific value is bigger, influences on the normal work of TOF camera bigger.
On the other hand, based on traditional electronic technology, traditional TOF camera and circuit over all Integration degree are all lower, body Product is larger.
Further, the driving and control of the need of work circuit of laser, and the work electricity of existing TOF camera cooperation Road, precision are all lower, that is to say, that lower for the accuracy reliability of measurement result.
Further, with the fast development of intellectual technology and virtual reality technology, existing TOF camera and corresponding electricity Road, to need to require to design corresponding circuit according to prior art far from the existing requirement for TOF product is met, Configure corresponding device.
Summary of the invention
It is an object of the present invention to provide a TOF camera module and TOF circuit and its heat dissipating method and manufacturing methods And application, wherein the TOF circuit provides intended power output, so that light source output power meets pre-provisioning request.
It is an object of the present invention to provide a TOF camera module and TOF circuit and its heat dissipating method and manufacturing methods And application, wherein by adjusting the electronic component of, the design TOF circuit, such as capacitance resistance ware, to adjust the defeated of the light source Power out, so that the TOF circuit of different output power can be designed by such method.
It is an object of the present invention to provide a TOF camera module and TOF circuit and its heat dissipating method and manufacturing methods And application, wherein the TOF circuit includes a protection circuit, the protection circuit provides the power output of preset range, and And monitoring power output, so that circuit safety works.
It is an object of the present invention to provide a TOF camera module and TOF circuit and its heat dissipating method and manufacturing methods And application, wherein the protection circuit is used to monitor the TOF light source at work, so that the TOF light source is in safe model Enclose interior work.
It is an object of the present invention to provide a TOF camera module and TOF circuit and its heat dissipating method and manufacturing methods And application, wherein the TOF camera module works in predetermined power range, working performance is more stable, the depth map of acquisition As information is more accurate.
It is an object of the present invention to provide a TOF camera module and TOF circuit and its heat dissipating method and manufacturing methods And application, wherein the TOF circuit integration be arranged, to reduce the waste of circuit element, and reduce volume.
It is an object of the present invention to provide a TOF camera module and TOF circuit and its heat dissipating method and manufacturing methods And application, wherein the TOF circuit includes a temperature sensing circuit, the temperature sensing circuit detects the work of the light source Temperature, and information is fed back into the TOF circuit.
It is an object of the present invention to provide a TOF camera module and TOF circuit and its heat dissipating method and manufacturing methods And application, wherein temperature information is used to analyze the accuracy for obtaining information, to improve the deep image information finally obtained Accuracy.
It is an object of the present invention to provide a TOF camera module and TOF circuit and its heat dissipating method and manufacturing methods And application, wherein the TOF circuit include a nominal data save circuit, for storing nominal data, for user into Row calibration and usage, so that the operating accuracy of TOF camera module is higher.
It is an object of the present invention to provide a TOF camera module and TOF circuit and its heat dissipating method and manufacturing methods And application, wherein nominal data is stored in data storage circuit, so that user be avoided to obtain nominal data when in use It is accurate to guarantee calibration for a possibility that generating mistake, and convenient for users to saving the time.
It is an object of the present invention to provide a TOF camera module and TOF circuit and its heat dissipating method and manufacturing methods And application reduces the power consumption in circuit, so that electric wherein the circuit element of the TOF circuit is designed by scheduled layout Road work is more stable, reliable.
It is an object of the present invention to provide a TOF camera module and TOF circuit and its heat dissipating method and manufacturing methods And application, wherein radiator structure is correspondingly designed when the TOF circuit is arranged at circuit board, to improve the TOF electricity The heat dissipation performance on road makes its operation is stable.
It is an object of the present invention to provide a TOF camera module and TOF circuit and its heat dissipating method and manufacturing methods And application, wherein the TOF camera module passes through the different aspects such as default power, circuit layout setting and monitoring temperature Optimization design so that the TOF camera module works in predetermined power, and reliablely and stablely works, to provide reliable, stable Deep image information, in order to be applied to different electronic equipments.
In order to realize that the above at least goal of the invention, an aspect of of the present present invention provide a TOF circuit comprising:
One TOF circuit of light sources；With
One photosensitive circuit；Wherein the TOF circuit of light sources is for driving a TOF light source working to generate light, the light At reflection light through a target and the photosensitive circuit photosensitization, the TOF circuit of light sources and the photosensitive circuit cooperation The light and reflection light information is managed, deep image information is obtained.
According to some embodiments, the TOF circuit, wherein the TOF circuit of light sources includes a protection circuit, the guarantor Protection circuit provides the scheduled limitation power of TOF light source.
According to some embodiments, the TOF circuit, wherein the TOF circuit of light sources includes a protection circuit, wherein institute Stating protection circuit includes a diverter module and a sampling module, and the diverter module and the sampling module are electrically connected side by side, with Carry out separating flow sampling.
According to some embodiments, the TOF circuit, wherein the diverter module is a resistance, the sampling module is One current sense amplifier.
According to some embodiments, the TOF circuit, wherein the protection circuit includes an average low-pass module, it is described Sampling module output current information to the average low-pass module, the average low-pass module handles the current information and obtains electricity Levelling mean value.
According to some embodiments, the TOF circuit, wherein the average low-pass module is a resistance and a capacitor.
According to some embodiments, the TOF circuit, wherein the protection circuit includes a comparison module, it is described average Low-pass module output information to the comparison module, the comparison module is compared processing.
According to some embodiments, the TOF circuit, wherein the comparison module is a comparator chip.
According to some embodiments, the TOF circuit, wherein the protection circuit includes a current detection switch module, The comparison module output information is to the current detection switch module.
According to some embodiments, the TOF circuit, wherein the current detection switch module is that current limliting load is opened It closes.
According to some embodiments, the TOF circuit, wherein the protection circuit includes a wrong latch module, it is described Diverter module is exported to the wrong latch module, and the mistake latch module exports the status information of the TOF light source to institute State current detection switch module.
According to some embodiments, the TOF circuit, wherein the mistake latch module includes two series resistances.
According to some embodiments, the TOF circuit, wherein the current detection switch module is latched in conjunction with the mistake Module and the information of the comparison module control the work of the TOF light source.
According to some embodiments, the TOF circuit, wherein the protection circuit includes that a peak point current limits module, The peak point current limitation module is connected to the current detection switch module, with limiting circuit peak working load power.
According to some embodiments, the TOF circuit, wherein peak point current limitation module is a resistance.
According to some embodiments, the TOF circuit, wherein the circuit of light sources includes a power supply, the power supply is institute It states protection circuit and work energy is provided.
According to some embodiments, the TOF circuit, wherein the TOF light source is VCSEL.
According to some embodiments, the TOF circuit, wherein the protection circuit includes a capacitor, described capacitor one end Connect the diverter module, one end ground connection.
According to some embodiments, the TOF circuit, wherein the protection circuit changes limitation function by adjusting capacitance-resistance value Rate, to obtain scheduled different brackets output power.
According to some embodiments, the TOF circuit, wherein the circuit of light sources includes one drive circuit, the driving Circuit is electrically connected to the photosensitive circuit, and the driving circuit drives the TOF light source working.
According to some embodiments, the TOF circuit, wherein the driving circuit includes a buffer logic chip and one Mosfet transistor, the photosensitive circuit are communicatively coupled to the buffer logic chip, the buffer logic chip communication connection Institute's mosfet transistor.
According to some embodiments, the TOF circuit, wherein the buffer logic chip and the mosfet transistor are adjacent The nearly TOF light source setting.
According to some embodiments, the TOF circuit, wherein the driving circuit includes an at least resistance and a capacitor, The resistance and the capacitor cooperate the buffer logic chip and mosfet transistor work.
According to some embodiments, the TOF circuit, wherein the driving circuit includes 2 resistance and 6 capacitors.
According to some embodiments, the TOF circuit, wherein the circuit of light sources includes a temperature sensing circuit, wherein The temperature sensing circuit detects the TOF light-source temperature.
According to some embodiments, the TOF circuit, wherein the temperature sensing circuit includes a temperature sensor and one Capacitor.
According to some embodiments, the TOF circuit, wherein the temperature sensor and the capacitor are adjacent to the TOF Light source setting.
According to some embodiments, the TOF circuit is used for wherein the TOF circuit includes that a nominal data saves circuit Save the nominal data of the TOF light source.
According to some embodiments, the TOF circuit, wherein it includes a memory, one that the nominal data, which saves circuit, Capacitor and a resistance.
According to some embodiments, the TOF circuit, wherein the nominal data circuit is electrically connected to the photosensitive electricity Road.
According to some embodiments, the TOF circuit, including an interface unit, the interface unit is for exporting Information.
According to some embodiments, the TOF circuit, wherein the photosensitive circuit includes a sensitive chip and at least one electricity Hold.
According to some embodiments, the TOF circuit, the TOF circuit is arranged at an at least circuit board, the circuit Plate has an at least heat release hole.
According to some embodiments, the TOF circuit, wherein the heat release hole is cooperatively arranged with the TOF light source.
According to some embodiments, the TOF circuit, wherein the circuit board is equipped with an at least heat dissipating layer, the heat dissipation Layer is cooperatively arranged with the TOF light source.
According to some embodiments, the TOF circuit, wherein the heat dissipating layer is layers of copper.
Another aspect of the present invention provides a TOF camera module and protects circuit, wherein the protection circuit is a TOF light source Predetermined power output is provided, the protection circuit includes, by adjusting the resistance value, obtaining predetermined limit function to a resistance Rate.
According to some embodiments, the TOF camera module protects circuit, wherein the protection circuit includes a divergent die Block and a sampling module, the diverter module and the sampling module are electrically connected side by side, to be shunted.
According to some embodiments, the TOF camera module protects circuit, wherein the diverter module is a resistance, institute Stating sampling module is a current sense amplifier.
According to some embodiments, the TOF camera module protects circuit, wherein the protection circuit includes one average low Logical module, the sampling module output current information to the average low-pass module, the average low-pass module handle the electricity Stream information obtains current average.
According to some embodiments, the TOF camera module protects circuit, wherein the average low-pass module is a resistance With a capacitor.
According to some embodiments, the TOF camera module protects circuit, wherein the protection circuit compares mould including one Block, for the average low-pass module output information to the comparison module, the comparison module is compared processing.
According to some embodiments, the TOF camera module protects circuit, wherein the comparison module is a comparator core Piece.
According to some embodiments, the TOF camera module protects circuit, wherein the protection circuit is examined including an electric current Survey switch module, the comparison module output information to the current detection switch module.
According to some embodiments, the TOF camera module protects circuit, wherein the current detection switch module is one Current limiting load switch.
According to some embodiments, the TOF camera module protects circuit, wherein the protection circuit includes a mistake lock Storing module, the diverter module are exported to the wrong latch module, and the mistake latch module exports the shape of the TOF light source State information is to the current detection switch module.
According to some embodiments, the TOF camera module protects circuit, wherein the mistake latch module includes two strings Join resistance and a protective cap.
According to some embodiments, the TOF camera module protects circuit, wherein the current detection switch module combines The mistake latch module and the information of the comparison module control the work of the TOF light source.
According to some embodiments, the TOF camera module protects circuit, wherein the protection circuit includes peak value electricity Ductility limit molding block, the peak point current limitation module is connected to the current detection switch module, with the work of limiting circuit peak value Power.
According to some embodiments, the TOF camera module protects circuit, wherein peak point current limitation module is one Resistance.
According to some embodiments, the TOF camera module protects circuit, wherein the protection circuit includes a power supply, The power supply provides work energy for the protection circuit.
According to some embodiments, the TOF camera module protects circuit, wherein the TOF light source is VCSEL.
According to some embodiments, the TOF camera module protects circuit, wherein the protection circuit includes a capacitor, Described capacitor one end connects the diverter module, one end ground connection.
According to some embodiments, the TOF camera module protects circuit, wherein the protection circuit is by adjusting capacitance-resistance Value changes output power, to obtain scheduled different brackets output power.
Another aspect of the present invention provides a TOF circuit for having radiator structure comprising
One TOF circuit drives a TOF light source working；With
An at least wiring board, the TOF circuit board are arranged at the wiring board, and at least one wiring board has at least One heat release hole, the heat generated with the TOF circuit that scatters and disappears.
According to some embodiments, the TOF circuit, wherein the heat release hole cooperates the TOF light source setting.
According to some embodiments, the TOF circuit, wherein the wiring board is equipped with an at least heat dissipating layer, the heat dissipation Layer is equipped with the TOF light source.
According to some embodiments, the TOF circuit, wherein the wiring board includes a light source substrate and a camera lens base Plate, the TOF light source are arranged at the light source substrate, and the heat release hole is arranged at the light source substrate, the TOF circuit It is selectively set in the light source substrate and the lens substrate.
Another aspect of the present invention provides a TOF circuit fabrication method comprising step:
(A) diverter module is provided, for adjusting electric current；
(B) sampling module, electric current in Acquisition Circuit are provided
(C) comparison module, current signal in comparison circuit are provided；With
(D) a current detection switch module is provided, a TOF light is controlled according to the result of diverter module, the comparison module Source.
According to some embodiments, the TOF circuit fabrication method, including step: adjusting in the TOF circuit Capacitance resistance ware, to obtain predetermined grade output power.
According to some embodiments, the TOF circuit fabrication method, including step: a wrong latch module is provided, The state for obtaining the TOF light source provides information in the current detection switch module.
According to some embodiments, the TOF circuit fabrication method, including step: an average low-pass module is provided, The average value for obtaining the electric current that the sampling module obtains, is sent to the comparison module.
According to some embodiments, the TOF circuit fabrication method, including step: providing peak point current limitation Module limits the current peak electric current.
Another aspect of the present invention provides a TOF circuit heat dissipating method comprising step:
An at least wiring board is provided, an at least heat release hole is set in the wiring board；With
One TOF circuit is set in the wiring board by predetermined cloth；
According to some embodiments, the TOF circuit heat dissipating method, including step: one heat dissipating layer of attachment is in described Wiring board predetermined position.
According to some embodiments, the TOF circuit heat dissipating method, wherein including by the TOF by scheduled layout setting Protection circuit in circuit is arranged adjacent to a TOF light source.
According to some embodiments, the TOF circuit heat dissipating method, wherein including by the TOF by scheduled layout setting The driving circuit of circuit is arranged adjacent to the TOF light source.
According to some embodiments, the TOF circuit heat dissipating method, wherein including integrally being arranged by scheduled layout setting The circuit element of the TOF circuit.
Another aspect of the present invention provides a TOF camera module comprising:
One light source unit；With
One light receiver unit；Wherein the light source unit generates light to a target, and light is reflected by the target, institute It states light receiver unit and receives reflection light, and the information for being incorporated into incident ray and reflection light obtains depth image letter Breath.
According to some embodiments, the TOF camera module, wherein the light source unit includes a TOF light source and a light Source circuit, the circuit of light sources drive the TOF light source working.
According to some embodiments, the TOF camera module, wherein light receiver unit includes a photosensitive circuit and a mirror Head assembly, the lens assembly receive light, are transferred to the photosensitive circuit and carry out photosensitization.
Another aspect of the present invention provides an electronic equipment comprising:
One equipment body；With
TOF camera module described in one, the TOF camera module are arranged at the equipment body, with the equipment master The acquisition and reproduction of depth image are realized in body cooperation.
According to some embodiments, the electronic equipment, wherein the electronic equipment is selected from combination: smart phone, plate One of computer, wearable device, body feeling interaction equipment, distance-measuring equipment, stereoscopic imaging apparatus are a variety of.
Detailed description of the invention
Fig. 1 is TOF camera module block diagram representation according to an embodiment of the invention.
Fig. 2 is the circuit of light sources block diagram representation of TOF camera module according to the abovementioned embodiments of the present invention.
Fig. 3 is the protection circuit block diagram schematic diagram of TOF camera module according to the abovementioned embodiments of the present invention.
Fig. 4 is TOF camera module operation principle schematic diagram according to the abovementioned embodiments of the present invention.
Fig. 5 is the data scaling schematic block diagram of TOF camera module according to the abovementioned embodiments of the present invention.
Fig. 6 is an embodiment block diagram representation of TOF camera module according to the abovementioned embodiments of the present invention.
Fig. 7 is that the above embodiment course of work block diagram of TOF camera module according to the abovementioned embodiments of the present invention shows It is intended to.
Fig. 8 is the photosensitive circuit of one embodiment of TOF circuit of TOF camera module according to the abovementioned embodiments of the present invention Schematic diagram.
Fig. 9 is the protection of the embodiment of the TOF circuit of TOF camera module according to the abovementioned embodiments of the present invention Circuit diagram.
Figure 10 is the embodiment of the TOF circuit of TOF camera module according to the abovementioned embodiments of the present invention Driving circuit block diagram representation.
Figure 11 is the embodiment of the TOF circuit of TOF camera module according to the abovementioned embodiments of the present invention Temperature test circuit diagram.
Figure 12 is the data storage circuit of the TOF circuit of TOF camera module according to the abovementioned embodiments of the present invention Schematic diagram.
Figure 13 is the connection unit circuit diagram of TOF camera module according to the abovementioned embodiments of the present invention.
Figure 14 is one specific embodiment stereoscopic schematic diagram of TOF camera module according to the abovementioned embodiments of the present invention.
Figure 15 is TOF camera module portion schematic diagram according to the abovementioned embodiments of the present invention.
Figure 16 is the exploded pictorial of the above-mentioned specific embodiment of TOF camera module according to the abovementioned embodiments of the present invention Figure.
Figure 17 is the TOF of the above-mentioned specific embodiment of TOF camera module according to the abovementioned embodiments of the present invention Circuit layout schematic diagram.
Figure 18 A, 18B are the light of the above-mentioned specific embodiment of TOF camera module according to the abovementioned embodiments of the present invention Source substrate schematic diagram.
Figure 19 is TOF protection circuit fabrication method block diagram according to the abovementioned embodiments of the present invention.
Figure 20 is TOF circuit heat dissipating method block diagram according to the abovementioned embodiments of the present invention.
Figure 21 is TOF camera module application schematic diagram according to the abovementioned embodiments of the present invention.
Specific embodiment
It is described below for disclosing the present invention so that those skilled in the art can be realized the present invention.It is excellent in being described below Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.It defines in the following description Basic principle of the invention can be applied to other embodiments, deformation scheme, improvement project, equivalent program and do not carry on the back Other technologies scheme from the spirit and scope of the present invention.
It will be understood by those skilled in the art that in exposure of the invention, term " longitudinal direction ", " transverse direction ", "upper", The orientation or position of the instructions such as "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, rather than The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore above-mentioned Term is not considered as limiting the invention.
It is understood that term " one " is interpreted as " at least one " or " one or more ", i.e., in one embodiment, The quantity of one element can be one, and in a further embodiment, the quantity of the element can be it is multiple, term " one " is no It can be interpreted as the limitation to quantity.
Quickly developing and being widely applied with intellectual technology and virtual reality, TOF technology also develops therewith, simultaneously Great number of issues is faced, such as the security reliability of safety, work and the configuration of actual circuit and reason in actual use Combination problem between etc., these are all a problem to be solved, and provide a TOF camera module and TOF according to the present invention Circuit and its heat dissipating method and manufacturing method and application, the present invention in design be pre-designed the TOF circuit for meeting code requirement, So that TOF camera module output power is in preset range, that is to say, that according to the TOF camera shooting for requiring design different capacity demand Mould group complies with the different safety requirements that uses, and more optimizes the utilization rate of resource；Further, institute is provided in the present invention When stating the work of TOF camera module, operating power is monitored, to limit output power, work so that it will not be more than preset range Relatively reliable, safety, and collected data are more accurate；Further, operating temperature is detected in the present invention, on the one hand guarantees work The safety of work a, standard of the another aspect temperature data as acquisition data screening, is further ensured that the standard of data acquisition True property；Further, in the present invention in the specific implementation process, function and real work situation is required to design in advance according to practical Circuit component layout reduces actual implementation circuit and designs the difference between circuit, improves the precision of TOF camera module work； Further, the nominal data that the present invention provides TOF camera module saves circuit, nominal data can be stored in advance, user makes Used time can directly transfer data therein and be demarcated, and without secondary acquisition by other means, avoid obtaining It goes wrong, while avoiding without calibration and bring systematic error in journey；Further, the present invention provides TOF camera module The scheduled circuit layout of offer and circuit board radiator structure, on the one hand reduce the loss of circuit self heat, another party The heat dissipation performance of circuit is improved in face, the accumulation of heat is reduced, to further increase the steady of the work of the TOF camera module Fixed, further, TOF camera module of the present invention carries out modularity design and facilitates and integrally answered so that each component is more integrated For electronic equipment.More than, the performance of the TOF camera module is improved by different modes, to provide suitable for modern intelligence The requirement of technology and virtual reality technology to TOF camera module, so that the TOF camera module is more suitable for being applied to Different field, such as the detection of interaction entertainment, action, Expression Recognition, entertainment advertisement, medical technology, Industry Control etc., so that The TOF camera module is more suitable for being applied to various electronic equipments, such as smart phone, tablet computer, wearable device, body Feel interactive device, distance-measuring equipment, stereoscopic imaging apparatus.
As shown in Fig. 1 to 13, the TOF camera module 100 of an embodiment according to the present invention.The TOF takes the photograph mould group can be with It is applied to various electronic equipments, citing ground but is not limited to, smart phone, tablet computer, wearable device, body feeling interaction are set Standby, distance-measuring equipment, stereoscopic imaging apparatus.
The TOF camera module 100 is used to obtain the deep image information of measured target, that is to say, that the TOF camera shooting The information that mould group 100 obtains includes the depth information of target and the flat image information of target.
This embodiment according to the invention, the TOF camera module 100 include a TOF light source unit 10 and a light Receiving unit 20.The TOF light source unit 10 is for generating light, such as laser.The light receiver unit 20, for receiving light Line, and obtain deep image information.Citing ground, the TOF light source unit 10 emit light to target object, and light is by target Object reflection obtains reflected light, and the light receiver unit 20 receives reflection light, and in conjunction with the TOF light source unit 10 Reflected light information obtains deep image information.
Further, the TOF camera module 100 includes an interface unit 30, and the interface unit 30 is for imaging TOF The depth image letter that mould group 100 obtains is transmitted to electronic equipment, for example is transmitted to processor.The interface unit 30 citing ground but It is not limited to be implemented as multi-pin connector.
The light source unit of the TOF camera module 100 includes a TOF light source 12 and a circuit of light sources 11, the light Source circuit 11 is for driving the work of TOF light source 12 to generate light.The TOF light source 12 citing ground but it is not limited to VCSEL ((Vertical Cavity Surface Emitting Laser, vertical cavity surface emitting laser) light source.That is, institute When stating the work of TOF light source unit 10, the circuit of light sources 11 drives the TOF light source 12 to work, and generates light.It is worth mentioning It is that the circuit of light sources 11 is the circuit of light sources 11 of predetermined power, that is to say, that when the TOF light source unit 10 works normally, The normal operating power of the light source unit is predetermined value.In other words, it can go to design the circuit of light sources 11 by difference, So as to adjust the output power of the TOF light source unit 10, it is made to meet different power demands.Citing ground, can pass through tune Circuit element in the whole circuit of light sources 11 adjusts the output power of the TOF light source unit 10, and the circuit element lifts Example ground but be not limited to resistance, capacitor.According to the present invention it is possible to provide different predetermined powers by designing the circuit of light sources 11 TOF light source unit 10, to meet different application demands, such as in the TOF camera module 100 of shooting personage, in order to Reduce influence of the light to human body, it is desirable that the TOF camera module 100 of smaller power, it at this time can be by designing the light Source circuit 11 provides the TOF light source unit 10 and the TOF camera module 100 of smaller power.Such as when shooting object And distance farther out when, need the TOF camera module 100 of relatively high power, at this time can by designing the circuit of light sources 11, The TOF light source unit 10 and the TOF camera module 100 of relatively high power are provided.For example, when shooting object, and range compared with It is small, it is closer, it can be by designing the circuit of light sources 11, the TOF circuit of light sources 11 and TOF for providing suitable power are taken the photograph As mould group 100, so as to make full use of resource, avoids offer power excessive and waste, and avoid power too small and cannot obtain To accurate deep image information.
The light receiver unit 20 includes a photosensitive circuit 21 and a lens assembly 22, and the lens assembly 22 is for connecing Light is received, and carries out photosensitization.The photosensitive circuit 21 is electrically connected to the circuit of light sources 11.The photosensitive circuit 21 is used In the transmitting light information of processing photosensitive information and the TOF light source 12, and then obtain deep image information.
In other words, the circuit of light sources 11 and the photosensitive circuit 21 constitute the TOF electricity of the TOF camera module 100 Road, that is, the transmitting of the light of the TOF light source unit 10 and the light receiver unit 20 and receive process is cooperated to realize depth map As the circuit of information.
The circuit of light sources 11 includes one drive circuit 111, and the driving circuit 111 is for driving the TOF light source 12 Work.
Further, the circuit of light sources 11 includes a protection circuit 112, and the protection circuit 112 drives the TOF light source 12 work, and protect the TOF light source 12.Citing ground, the protection circuit 112 drive the light source in predetermined power range work Make, and limiting circuit power is more than preset range.
The protection circuit 112 is connected to the driving circuit 111, in order to drive the TOF light source 12 work when, Protect the work of the TOF light source 12 and the circuit of light sources 11.
It is noted that in the TOF mould group, the operating power of the TOF and the size of circuital current are institutes The important parameter for stating TOF mould group work stability and reliability is made when the power of design is larger, and the power of actual demand is smaller At the wasting of resources；When the power of design is smaller, and actual demand power is larger, it is not able to satisfy work requirements, obtaining information can It is lower by property；When the power of the circuit of light sources 11 or electric current are more than predetermined value, the letter of the TOF mould group acquisition may be made The reliability of breath reduces, and circuit work is dangerous, and causes the waste of resource, and the protection circuit 112 of the invention is being set Timing, the power that demand can be met according to pre-provisioning request design can detecte the TOF camera module 100 at work Circuital current and power, so that the operating power of the circuit made from different aspect is controllable, so that the TOF camera module 100 work is relatively reliable, stablizes.Citing ground, limitation electric current can be set in the protection circuit 112, but electric current is greater than limitation When value, the protection circuit 112 can be acted, for example disconnect the power supply of the TOF light source 12, so that the TOF light source 12 stops Only work.
As shown in figure 3, being the block diagram of the protection circuit 112 of TOF camera module 100 according to the abovementioned embodiments of the present invention Schematic diagram.The protection circuit 112 includes a diverter module 1121, a sampling module 1123, a comparison module 1125 and an electricity Flow detection switch module 1126.
The diverter module 1121 is for adjusting circuital current.The diverter module 1121 is communicatively coupled to the electric current inspection Survey switch module 1126.
The sampling module 1123 is used to acquire the current signal information when protection protection circuit 112 works.It is described Sampling module 1123 is arranged side by side with the diverter module 1121, with the diverter module 1121 end voltage having the same.
Comparison result is sent to the current detecting and opened by the comparison module 1125 for comparing current information It closes.
The current detection switch module 1126 is used to determine the switch of the TOF light source 12 according to input information.
The protection circuit 112 further comprises an average low-pass module 1124, and the average low-pass module 1124 cooperates It is described to be worked using module, obtain the average value of 1123 output signal of sampling module.
Further, the averaging module transmits information to the comparison module 1125, and the comparison module 1125 compares The input information of the average low-pass module 1124, and comparison result is sent to the current detection switch module 1126.
Further, the protection circuit 112 includes a wrong latch module 1122, and the mistake latch module 1122 is used for Judge the state of the TOF light source 12 and transfers information to the current detection switch module 1126.That is, described Mistake latch module 1122 is communicatively coupled to the current detection switch module 1126.Citing ground, when the TOF light source 12 just Often, the wrong transmitting of the latch module 1122 closure information to the current detection switch module 1126, open by the current detecting The switch of the TOF light source 12 can be determined according to input information by closing module 1126.When 12 exception of TOF light source, the mistake The transmitting of false-lock storing module 1122 disconnects information to the current detection switch module 1126, the current detection switch module 1126 The switch of the TOF light source 12 can be determined according to input information.
The protection circuit 112 can further include peak point current limitation module 1127, for limiting the light source The peak operation current of circuit 11, so that the TOF camera module 100 works in predetermined power range.That is, described Peak point current limitation module 1127 is communicatively coupled to the current detection switch module 1126.
The peak point current limitation module 1127 cooperates the current detection switch module 1126 to work, so that described The limitation power or operating power of TOF light source 12 are in preset range.
The protection circuit 112 may include a power supply, and the power supply is that the protection circuit 112 provides work energy. The power supply can be the element of the protection circuit 112, be also possible to the electric current provided by external circuit, the skill of this field Art personnel are it should be understood that the present invention is not intended to limit in this respect.
That is, 112 input terminal of protection circuit connects power supply, output end connects the TOF light source 12.
Integrally, referring to Fig. 4, the course of work of the protection circuit 112 be can be, and electric current separately flows into the divergent die Block 1121 and the sampling module 1123, the sampling module 1123 acquire current information, will output information to described average low Logical module 1124, the average processing of the low-pass module 1124 input information, is transmitted to the relatively mould for current information after processing Block 1125, the comparison module 1125 are compared, and comparison result is sent to the current detection switch module 1126.It is described The electric current of output all the way of diverter module 1121 is sent to the current detection switch module 1126.The diverter module 1121 it is another One output electric current is sent to the wrong latch module 1122, and output information is sent to described by the mistake latch module 1122 Current detection switch module 1126.Diverter module 1121, the mistake described in 1126 comprehensive descision of current detection switch module The information of false-lock storing module 1122 and the comparison module 1125 determines the switch of the TOF light source 12.Citing ground, when the electricity It is described when stream detection switch module 1126 receives the information for 12 exception of the light source that the wrong latch module 1122 transmits The control of current detection switch module 1126 disconnects 12 power supply of TOF light source；When the current detection switch module 1126 receives Current information to the diverter module 1121 is more than when limiting range, and the control of current detection switch module 1126 disconnects institute State 12 power supply of TOF light source；When the comparison information that the current detection switch module 1126 receives the comparison module 1125 is super When crossing restriction range, the control of current detection switch module 1126 disconnects 12 power supply of TOF light source；And work as the divergent die When the input information of block 1121, the wrong latch module 1122 and the comparison module 1125 belongs to preset range, institute It states the control of current detection switch module 1126 and opens 12 power supply of TOF light source, or be to maintain at 12 power supply of TOF light source In open state.
It, can be by adjusting the diverter module 1121, described adopting in the protection circuit 112 when designing circuit Egf block 1123, the comparison module 1125, the current detection module, the average low-pass module 1124, the mistake lock The circuit element of wherein one or more modules of storing module 1122 and peak point current limitation module 1127 is to adjust It states the power of circuit of light sources 11, circuit element citing ground but is not limited to resistance, capacitor etc..That is, in design, it can By adjusting the diverter module 1121, the sampling module 1123, the comparison module 1125, the current detection switch Module 1126, the average low-pass module 1124, the wrong latch module 1122 and the peak point current limit module The circuit element of 1127 wherein one or more modules obtains the TOF camera module 100 of predetermined power.
The circuit of light sources 11 further comprises a temperature sensing circuit 113, and the temperature sensing circuit 113 detects described The temperature of TOF light source unit 10.It the temperature sensing circuit 113 citing ground but is not limited to be implemented as temperature sensor, certainly, It can also include the current element, such as inductance, capacitor etc. of other cooperations.
The temperature sensing circuit 113 can be used to detect the temperature and/or TOF light source electricity of the TOF light source 12 The fever on road 11 or the temperature of Sensitive Apparatus.
The TOF circuit referring to described in Fig. 2 and Fig. 5 includes that a nominal data saves circuit 23, and the nominal data saves circuit 23 for storing the nominal data of the TOF camera module 100.That is, it is pre- to save circuit 23 by the nominal data The nominal data of the TOF camera module 100 is stored, in order to user's calibration and usage.In other words, described in user's use It, can be by extracting the nominal data in the calibration preservation circuit to the TOF camera module when TOF camera module 100 100 are demarcated, so that the TOF camera module 100 has accurate benchmark, improve the TOF camera module 100 Operating accuracy, avoid user when in use secondary acquisition nominal data when output mistake and demarcate it is inaccurate, and prevent without mark Determine and make working standard inaccurate, and reduces the waste of user time.
The nominal data saves the citing of circuit 23 ground but is not limited to be implemented as data storage.It is, of course, also possible to wrap Include other circuit blocks, such as resistance, capacitor.
The nominal data saves circuit 23 and is electrically connected to the interface unit 30, external in order to be used for when being used for Electronic equipment extracts the nominal data by the interface unit 30 and saves the calibration information stored in circuit 23.
Referring to Fig. 4 and Fig. 5, citing ground, the course of work of the TOF camera module 100 be can be, the TOF light source 12 Emit light in the driving of the circuit of light sources 11, light is reflected after reaching target, further, emits light by the light Line receiving unit 20 receives, and carries out photosensitization, information and light of the photosensitive circuit 21 in conjunction with the TOF light source 12 transmitting light The reception light information of line receiving unit 20 handles to obtain the deep image information of the target, further, it is possible to by described Interface unit 30 exports the deep image information of the target.For example can export to a processor, to apply the depth map As information, for example it is used for interaction entertainment, action detection, Expression Recognition, entertainment advertisement, medical technology, Industry Control.Than Such as, it can export to an electronic equipment, to reproduce the TOF camera module in a manner of three-dimensional the electronic equipment The deep image information of the target of 100 acquisitions.The circuit of light sources 11 is communicatively coupled to the photosensitive circuit 21, in order to by institute The transmitting optical transmission of information of TOF light source 12 is stated to the photosensitive circuit 21, the mode of the communication connection, which is illustrated, ground but to be not limited to, Wired or wireless connection type, such as electric connection mode, signal connection type.
Certainly, before using the TOF camera module 100, user, which can lead to, extracts the nominal data preservation circuit Nominal data in 23 demarcates the TOF camera module 100 so that the acquisition of the TOF camera module 100 meet it is pre- Reference of reference value is calibrated, so that output information is more accurate.
Further, during the TOF camera module 100 works, the temperature sensing circuit 113 detects described The temperature of TOF light source 12, the temperature sensing circuit 113 are communicatively coupled to the photosensitive circuit 21, and the photosensitive circuit 21 will Reference value of the information of the temperature sensing circuit 113 as image sampling, citing ground, when the temperature sensing circuit 113 is examined When measuring the temperature of the TOF light source 12 higher than predetermined value, the deep image information of the analysis of photosensitive circuit 21 acquisition is not inconsistent Predetermined condition is closed, is rejected, and when the temperature that the temperature sensing circuit 113 detects the TOF light source 12 meets predetermined model When enclosing, the image information of the analysis of photosensitive circuit 21 acquisition conforms to a predetermined condition, and is retained, thus the monitoring temperature passed through Mode, so that sampling is more accurate, the deep image information that the TOF camera module 100 obtains is more accurate.
The temperature sensing circuit 113 can also carry the information to external equipment, for example carry the information to primary processor, lead to The primary processor is crossed to take appropriate measures.
Referring to figure 6 and figure 7, in one embodiment, the TOF light source 12 is implemented as a VCSEL, meets scheduled mark Standard, such as Class 3B, generate the laser of 850nm, and the driving circuit 111 and the protection circuit 112 cooperate with the TOF light Source 12 works, and the photosensitive circuit 21 is implemented as an integrated chip, such as sensitive chip, and resolution ratio is 224 × 172.It is described to connect Mouth unit 30 is not embodied as a 30Pin connector, and the temperature sensing circuit 113 is implemented as a temperature sensor, the mark Determine data storage circuit 23 and is implemented as a data storage.
The driving circuit 111 and the protection circuit 112 drive the VCSEL work to generate laser, the photosensitive electricity Road 21 is communicatively coupled to the circuit of light sources 11, and the sensor is communicatively coupled to 21 integrated chip of photosensitive circuit, described Nominal data saves circuit 23 and is communicatively coupled to the photosensitive circuit 21, and the primary processor is communicatively coupled to the interface unit 30 30Pin connector, to obtain deep image information.
In one embodiment, the TOF light source 12 is implemented as a near infrared emission device, the light receiver unit 20 are implemented as a TOF receiving module, and the interface unit 30 is implemented as an input/output interface.The photosensitive circuit 21 can To be implemented as a master control system comprising a phase difference operator, an analysis and processing unit.The TOF camera module 100 The course of work is that the near infrared emission device emits light, and the phase of the reflected light is phase 1, the transmitting light projection to speed Target, contact target back reflection, the TOF receiving module receive light, and receiving the corresponding phase of light is phase 2, further, institute It states master control system and phase information is handled by the phase difference operator, for example, phase difference=phase 1- phase 2, into one Step, phase difference is converted to depth RAW data by the analysis and processing unit processing, further, it is possible to pass through the input and output Mouth interface exports depth RAW data to the end AP.
As shown in figure 8, being one embodiment of TOF circuit of TOF camera module 100 according to the abovementioned embodiments of the present invention 21 schematic diagram of photosensitive circuit.As shown in figure 9, being the TOF electricity of TOF camera module 100 according to the abovementioned embodiments of the present invention 112 schematic diagram of protection circuit of the embodiment on road.As shown in Figure 10, it is TOF according to the abovementioned embodiments of the present invention 111 block diagram representation of driving circuit of the embodiment of the TOF circuit of camera module 100.It as shown in figure 11, is root According to the temperature test circuit of the embodiment of the TOF circuit of the TOF camera module 100 of the above embodiment of the present invention Schematic diagram.It is the data of the TOF circuit of TOF camera module 100 according to the abovementioned embodiments of the present invention as shown in figure 12 Save circuit diagram.That is, Fig. 8 to Figure 12 respectively illustrates a kind of specific embodiment of the TOF circuit not Same part, i.e., the described photosensitive circuit 21, the protection circuit 112, the driving circuit 111, the nominal data save circuit 23 specific embodiment, different piece can be combined with each other work, can also individually cooperate with other circuits.
The photosensitive circuit 21 includes an at least photosensitive element 211 and an at least Resistor-Capacitor Unit 212, the photosensitive element 211 for carrying out photosensitization, and handles light information.The Resistor-Capacitor Unit 212 cooperates the photosensitive element 211 to work, Complete photosensitization.
Referring to Fig. 8, in this embodiment of the invention, the photosensitive element 211 is implemented as sensitive chip U1, institute Stating sensitive chip U1 can be the chip of 42 interfaces, and part of interface is for connecting the protection circuit 112, driving electricity Road 111, the data scaling save circuit.Citing ground, the model of the sensitive chip U1 can be IRS1645C.It is described photosensitive The one resistance R1 of RSET N interface connection of chip U1, can be 10K Ω to the resistance R1 citing.
Citing, Resistor-Capacitor Unit 212 described in the interface of the sensitive chip U1 is implemented as capacitor, as shown in Figure 8 electricity Hold C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19.The capacitor C1, C2, C3 are connected to the VDDMODH interface of the sensitive chip side by side respectively, the electricity of illustrate described capacitor C1, C2, C3 Capacitance can be respectively 10uF, 1nF, 1nF.The capacitor C4 is connected to the VDDIO of the sensitive chip, and citing ground is described Capacitor C4 capacitance can be 100nF.Described capacitor C5, C6, C7, C8, C9 are connected to the sensitive chip U1 side by side respectively 3V3 interface, citing ground, the capacitance of described capacitor C5, C6, C7, C8, C9 respectively can for 10uF, 10nF, 10nF, 10nF, 100nF.Described capacitor C10, C11, C12 are connected to the 3V3 interface of the sensitive chip U1 side by side respectively, and citing ground is described The capacitance of capacitor C10, C11, C12 are respectively 1nF, 1nF, 1nF.Described capacitor C13, C14, C15, C16, C17, C18, C19 Be connected to the 1V5 interface of the sensitive chip U1 side by side respectively, citing ground, the capacitor C13, C14, C15, C16, C17, The capacitance of C18, C19 can be respectively 10uF, 1nF, 10nF, 1nF, 100nF, 1nF, 1nF.
Referring to Fig. 9, in this embodiment in accordance with the invention, the diverter module 1121 of the protection circuit 112 is by reality It applies as a resistance R8.Citing ground, in some embodiments, the resistance value of the resistance R8 can be 0.082 Ω.
The sampling module 1123 is implemented as current sense amplifier U5.The average low-pass module 1124 is implemented as An one resistance R10 and resistance C28.The resistance R10 is connected to the OUT terminal mouth of the current sense amplifier U5, the electricity Hold the port GND that C28 is connected to the current sense amplifier U5.Citing ground, in some embodiments, the resistance R10 Resistance value can be 10K, the capacitance of the capacitor C28 can be 22uF.Citing ground, the current sense amplifier U5 model It can be MAX9634F.
The comparison module 1125 is implemented as one end point of comparator chip U6, the resistance R10 and the capacitor C28 It is not connected to the interface IN of the comparator chip U6.The GND interface of the current sense amplifier U5 connects the comparator The GNF interface of chip U6, and be all grounded.Citing ground, the model of the comparator chip U6 can be MAX9645.
The current detection switch module 1126 is implemented as a current limiting load switch U7, tool there are six interface IN, EN, GND,OUT,FLAG,SETI.Citing ground, the model of the current limiting load switch U7 can be FPF2194.The current limliting load is opened Close interface OUT connection 12 power supply of TOF light source (VVSEL) of U7.The interface GND of the current limiting load switch U7 is grounded.Institute The interface OUT for stating comparable chip U6 connects the interface EN of the current limiting load switch U7.
The peak point current limitation module 1127 is implemented as a peak point current limiting resistance R12, the peak point current limit Resistance R12 processed cooperates the current limiting load switch U7 work.The peak point current limiting resistance R12 is connected to the current limliting load The interface SETI of switch U7.Citing ground, the resistance value of the resistance R12 are 751 Ω.
The mistake latch module 1122 is implemented as a resistance R9, a resistance R11 and a protective cap VCSEL cap, institute The resistance R11 connection protective cap VCSEL cap is stated, such as VCSEL, to obtain the status information of the TOF light source 12, such as Whether the TOF light source has disconnection, with the presence or absence of abnormal.The mistake latch module 1122 is connected to the current limiting load switch The EN interface of U7.Citing ground, the resistance value of the resistance R9 can be 49.9 Ω, and the resistance value of the resistance R11 can be 10K Ω. Citing ground, the protective cap VCSEL cap detect 12 information of TOF light source, described in protective cap VCSEL cap detection When TOF light source 12 is normal, the mistake latch module 1122 transmitting normal information of light source to the current limiting load switch U7, and When the protective cap VCSEL cap detects that the TOF light source 12 is abnormal, it is different that the mistake latch module 1122 transmits light source For normal information to the current limiting load switch U7, the current limiting load switch U7 disconnects 12 power supply of TOF light source.
One end of the shunt resistance R8 connects the B2 interface of the current limiting load switch U7.
The protection circuit 112 further includes a capacitor C29, and effect is to adjust circuital current, one end of the capacitor C29 Connect the resistance R8, one end ground connection.Citing ground, the capacitance of the capacitor C29 can be 0.1uF.
The protection circuit 112 further includes a resistance R13, for adjusting circuital current.The one end the resistance R13 connects institute State the EN interface of current limiting load switch U7, one end ground connection.
It can be by adjusting the resistance value of the resistance in circuit and the capacitance of the capacitor in the protection circuit 112 Adjust the power of the TOF light source 12, citing ground, can by adjust described resistance R8, R9, R11, R10, R13, R12 with And the resistance value or capacitance of wherein one or more in C28, C29 adjust the power of the TOF light source 12, to obtain not With the TOF camera module 100 of power grade.
Those skilled in the art it should be understood that chip U1, U3 described in above embodiment, U4, U5, U6, U7, The resistance value of the capacitance and the resistance of the model of U8, U9 and each capacitor, is illustrative only one be carried out Kind mode, is not limitation of the invention, and each described chip U1, U3, U4, U5, U6, U7, U8, U9 can also be other models, Each resistance value and the capacitance can also be other numerical value.
Referring to Fig.1 0, in this embodiment in accordance with the invention, the driving circuit 111 includes a driving buffer logic chip A U3 and mosfet transistor U4.The driving buffer logic chip U3 have 6 interfaces, be respectively A1, GND, A2, Y1, VCC and Y2.The MOSFST transistor U4 has 3 interfaces, is G, D, S respectively.
The driving circuit 111 further includes a resistance R2, a resistance R7, multiple capacitors and a light emitting diode D1, more A capacitor is respectively capacitor C21, C23, C24, C25, C26, C27.
The interface A1 of the driving buffer logic chip U3 connects the interface MOD_SE_P of the sensitive chip U1 with A2.Institute State the interface GND ground connection of driving buffer logic chip U3.Described in the interface Y1 of the driving buffer logic chip U3 is connected with Y2 The interface G of mosfet transistor U4.The interface VCC of the driving buffer logic chip U3 connects the interface of the sensitive chip U1 3V3.The model on citing ground, the driving buffer logic chip U3 can be NC7WV17L6X.
The MOSFST transistor U4 interface D connection diode D1, the MOSFST transistor U4 interface S ground connection.It is described Light-Emitting Diode D1, that is, TOF light source 12.Citing ground, the model of the MOSFST transistor U4 can be CSD17381F4.
The one end the resistance R2 connects the interface MOD_SE_P of the sensitive chip U1, one end ground connection.Citing ground, the electricity The resistance value for hindering R2 is 10K Ω.
The one end the capacitor C21 connects the interface 3V3 of the sensitive chip U1, one end ground connection.Citing ground, the capacitor The capacitance of C21 is 0.1uF.
The one end described capacitor C23, C24, C25 is connected to 12 power supply of TOF light source (VVSEL) side by side, such as VSEL, one End ground connection.The capacitance on citing ground, described capacitor C23, C24, C25 can be respectively 10uF, 0.1uF, 0.1uF.
The one end the resistance R7 connects 12 power supply of TOF light source (VVSEL), and one end connects the light emitting diode D1.
The one end described capacitor C26, C27 is connected to the one end the resistance R7, other end ground connection.Citing ground, the electricity The resistance value for holding C26, C27 can be respectively 22nF, 22nF.
The one end the light emitting diode D1 connects the resistance R7, and one end connects the interface D of the mosfet transistor U4.
Referring to Fig.1 1, this embodiment according to the present invention, the temperature sensing circuit 113 includes a temperature sensor A U8 and capacitor C30.
Citing ground, the temperature sensor U8 have 6 interfaces, are SDA, VCC, A0, SCL, GND, ALERT respectively.It is described The interface SDA of temperature sensor U8 connects the interface I2C_SDA of the sensitive chip U1.The interface of the temperature sensor U8 VCC connects the interface VDDIO of the sensitive chip U1.The interface A0 of the temperature sensor U8 is grounded.The temperature sensor The interface SCL of U8 connects the interface I2C_SCL of the sensitive chip U1.The interface GND of the temperature sensor U8 is grounded.Citing Ground, the temperature sensor U8 model PCT2202UK.
The one end the capacitor C30 connects the interface VDDIO of the sensitive chip U1, one end ground connection.Citing ground, the capacitor The capacitance 0.1uF of C30.
The selection of the temperature sensor U8 needs to consider temperature measurement accuracy, communication interface quantity, working power requirement Etc. factors.
Referring to Fig.1 2, this embodiment according to the present invention, it includes a memory that the nominal data, which saves circuit 23, U9, a resistance R14 and a capacitor C31.
The memory U9 has 8 interfaces, respectively VCC, WC, DU, SCL, VSS, E2, SDA, E1.The memory U9 Interface VCC connect the sensitive chip U1 interface VDDIO, the memory U9 interface WC pass through the resistance R14 connect Meet the interface VDDIO of the sensitive chip U1.The interface SCL of the memory U9 connects the interface I2C_ of the sensitive chip U1 SCL.The interface VSS of the memory U9 is grounded.The interface E2 of the memory U9 connects connecing for the sensitive chip U1 with E1 Mouth VDDIO.The interface SDA of the memory U9 connects the interface I2C_SDA of the sensitive chip U1.Citing ground, the storage The model of device U9 can be M24M01DF.Citing ground, the resistance value of the resistance R14 are 10K Ω.
One end of the capacitor C31 connects the interface VDDIO of the sensitive chip U1, one end ground connection.Citing ground, the electricity The capacitance for holding C31 can be 0.1uF.
The selection of the memory U9 needs to consider quantity, memory capacity, the reliability of work and the stabilization of communication interface The factors such as property.
Referring to Fig.1 3, this embodiment according to the present invention, the interface unit 30 is implemented as a connector J1.Institute Connector J1 is stated with 30 interfaces, is connected to the corresponding interface of the sensitive chip U1 and ground connection.
Citing ground, the interface 1 and 3 of the connector J1 connect the interface 3V3 of the sensitive chip U1.The connector J1 Interface 2,4,6 and 8 connect the interface V_ILLU of the sensitive chip U1.The interface 5 of the connector J1,13,19,25,10, 16,22 ground connection.The interface 7 of the connector J1 connects the interface VDDIO of the sensitive chip U1.The connector J1's connects The interface IMG_CLK of the 11 connection sensitive chip U1 of mouth.The interface 12 and 14 of the connector J1 connects the sensitive chip The interface 1V5 of U1.The interface 15 of the connector J1 connects the interface CSI_D0_P of the sensitive chip U1.The connector J1 Interface 17 connect the interface CSI_D0_N of the sensitive chip U1.The interface 18 of the connector J1 connects the sensitive chip The interface ILLU_EN of U1.The interface 20 of the connector J1 connects the interface IMG_START of the sensitive chip U1.The company The interface 21 for meeting device J1 connects the interface CSI_CL_P of the sensitive chip U1.The interface 23 of the connector J1 connects the sense The interface CSI_CL_N of optical chip U1.The interface 24 of the connector J1 connects the interface I2C_SCL of the sensitive chip U1.Institute The interface 26 for stating connector J1 connects the interface I2C_SDA of the sensitive chip U1.The interface 27 of the connector J1 connects institute State the interface CSI_D1_P of sensitive chip U1.The interface 29 of the connector J1 connects the interface CSI_ of the sensitive chip U1 D1_N.The interface 30 of the connector J1 connects the interface RESET_N of the sensitive chip U1.Citing ground, the connector J1 Model can be AXE630124.
The TOF light source unit 10 and the light receiver unit 20 of the above embodiment of the present invention may be implemented as Different mode, to form different types of TOF camera module 100.It is according to the present invention above-mentioned shown in Figure 14 to Figure 18 B One specific embodiment of the TOF camera module 100 of embodiment.It is noted that the structure of the TOF camera module 100 It is illustrative only a kind of mode that the present invention can be carried out, is not limitation of the invention.
It as shown in figure 14, is that TOF camera module 100 1 specific embodiment according to the abovementioned embodiments of the present invention is three-dimensional Schematic diagram.As shown in figure 15, it is 100 schematic diagrames of TOF camera module according to the abovementioned embodiments of the present invention.Such as Figure 16 institute Show, is the decomposition diagram of the above-mentioned specific embodiment of TOF camera module 100 according to the abovementioned embodiments of the present invention.Institute Stating TOF camera module 100 includes a TOF light source unit 10, a light receiver unit 20 and an interface unit 30.The TOF light source unit 10 emits light, and the light receiver unit 20 receives light and analyzes the received light of transmitting Line information obtains deep image information, and the interface unit 30 is communicatively coupled to the light receiver unit 20, and transmits letter It ceases to electronic equipment.
In this embodiment in accordance with the invention, the TOF light source unit 10 and the light receiver unit 20 respectively form One light source module group and a camera module, the light source module group and the camera module are in communication with each other connection.Specifically, the light source Unit and the light receiver unit 20 are connected by a communication device 40, the citing of communication device 40 ground but are not limited to soft company Connect device, multi-wad join line.
The TOF light source unit 10 and the light receiver unit 20 are arranged neighbourly.The TOF light source unit 10 and institute The radiation direction for stating light receiver unit 20 is consistent.
The TOF light source unit 10 includes a TOF light source 12, a circuit of light sources 11 and a light source substrate 13.
The light receiver unit 20 includes a photosensitive circuit 21 and a lens assembly 22.The photosensitive circuit 21 include a photosensitive element 211 and at least one Resistor-Capacitor Unit 212.The lens assembly 22 includes a camera lens 221, one Camera lens load-carrying unit 222 and a lens substrate 223.Further, the circuit element of the TOF circuit is set to institute by scheduled layout State light source substrate 13 and the lens substrate 223.
The circuit element that the circuit of light sources 11 and the photosensitive circuit 21 constitute the TOF circuit is selectively set In the light source substrate 13 or the lens substrate 223.That is, the driving circuit 111, the protection circuit 112, institute State the circuit element selectivity in temperature sensing circuit 113, nominal data preservation circuit 23 and the photosensitive circuit 21 Ground is set to the light source substrate 13 and the lens substrate 223.That is, the light source substrate 13 and the lens substrate 223 constitute the wiring board of the setting TOF circuit of the TOF camera module 100.The light source substrate 13 and the camera lens base Plate 223 can be a whole wiring board, be also possible to two wiring boards, the present invention is not intended to limit in this respect.
The TOF light source 12 is installed in the light source substrate 13.That is, circuit of light sources described in above-described embodiment 11 circuit element is predetermined in the light source substrate 13, citing ground but is not limited by embedded circuit, surface mount, etching electricity The modes such as road are set to the light source substrate 13.That is, the 11 element subelement of circuit of light sources be arranged at it is described The inside of light source substrate 13, partial circuit element are revealed in the surface of the light source substrate 13.
The mode that the photosensitive circuit 21 is arranged at the lens substrate 223, which is illustrated, ground but to be not limited to bury, surface patch Dress, etched circuit etc. are set to the lens substrate 223 by surface-pasted mode than sensitive chip as will be described.It is described Camera lens load-carrying unit 222 is arranged at the lens substrate 223, and the camera lens 221 is arranged at the camera lens load-carrying unit 222, so that the camera lens 221 is located at the photosensitive path of the sensitive chip.
The TOF light source 12 generates heat during the work time, when heat accumulation, will affect the TOF light source unit 10 job stability, in the present invention, the circuit element of the circuit of light sources 11 is by scheduled layout setting, to optimize the light source Circuit 11 is laid out.
It the circuit layout citing ground of the circuit of light sources 11 but is not limited to, by the TOF light source 12 and the protection circuit 112 are neighboringly arranged, to reduce power loss when long distance transmission, so that signal is inaccurate.
It power supply topologies citing ground but is not limited to, by the temperature sensing circuit 113 adjacent to the TOF light source 12, so that the temperature information that the detection of the temperature sensing circuit 113 obtains is more accurate, it is more nearly the TOF light source 12 actual temperature.
Further, referring to Fig.1 7, in this embodiment of the invention, the layout type of the TOF circuit can be, The buffer logic chip U3 and the mosfet transistor U4 are arranged adjacent to the TOF light source 12, i.e., set adjacent to VCSEL It sets.By the buffer logic chip U3 and the mutually adjacent setting of mosfet transistor U4.The temperature sensor U8 is adjacent The nearly TOF light source 12 is arranged.The capacitor C30 is arranged adjacent to the TOF light source 12.The capacitor C30 is neighbouring described Temperature sensor U8 it is arranged.
Further, it is possible to which circuit elements are selectively arranged on the light source substrate 13 and the lens substrate 223 respectively Part, for example circuit element is set around the neighbouring sensitive chip U1, circuit is set around the neighbouring TOF light source 12 Element.When circuit element is arranged, so that the circuit element of relevant circuit is close to each other, for example belong to the circuit of same module Element.During setting, the connection distance between relevant circuit element is reduced, reduces transmission loss.
Citing ground, in a kind of mode, the sensitive chip U1, the current sense amplifier U5, the comparator core Piece U6, the current limiting load switch U7, the nominal data memory U9 are arranged at the wiring board.The capacitor C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19 are adjacent to the sensitive chip U1 setting.The resistance R1 is arranged adjacent to the sensitive chip U1.The resistance R14 and the capacitor C31 are adjacent to the calibration Data storage U9 setting.The neighbouring setting of the current sense amplifier U5 and comparator chip U6.The resistance R8, R9, R10, R11, R12, R13 are adjacent to the current sense amplifier U5, the comparator chip U6, the current limiting load switch U7 setting.The capacitor C29 is arranged adjacent to the current limiting load switch U7.
The buffer logic chip U3, the mosfet transistor U4 and the temperature sensor U8 are arranged at the light Source substrate 13.The resistance R7 and the resistance R2 are arranged at the light source substrate 13.The capacitor C21, C23, C24, C25, C26, C27 are arranged at the light source substrate 13.Described capacitor C21, C23, C24, C25, C26, C27 and the resistance R2, the resistance R7 are intensively arranged.
It as shown in Figure 18 A, is the above-mentioned specific embodiment party of TOF camera module 100 according to the abovementioned embodiments of the present invention 13 schematic diagram of light source substrate of formula.It as shown in figure 18b, is the upper of TOF camera module 100 according to the abovementioned embodiments of the present invention 13 enlarged schematic partial view of light source substrate for stating specific embodiment, for illustrating the heat dissipation of the light source substrate 13.The light Source substrate 13 includes that an at least substrate layer 131 and an at least heat dissipating layer 132, the heat dissipating layer are arranged at the substrate layer 133 Predetermined position, to enhance the heat dissipation performance of the light source substrate 13.Institute's heat dissipating layer 132 may be implemented as metal layer, citing Ground but it is not limited to layers of copper, such as the layers of copper of coating.
The heat dissipating layer 132 is arranged at presumptive area, citing ground but is not limited to, the corresponding region of the TOF light source 12. The heat dissipating layer 132 can also integrally be attached to 131 surface of substrate layer, those skilled in the art it should be understood that The setting area of the heat dissipating layer 132 and setting area are not limitation of the invention.
The substrate layer 133 has an at least heat release hole 131, to enhance the heat dissipation performance of the light source substrate 13.One In a little embodiments, the heat release hole 131 is arranged at position corresponding with the heat dissipating layer 132, thus with the heat dissipating layer 132 Match the heat dissipation performance for enhancing the TOF light source unit 10.Certainly, in other embodiments of the invention, the heat release hole 131 can also be arranged at other regions, and the position of the radiating area and the heat release hole 131 can not correspond to, this field Technical staff is it should be understood that the setting position of the heat release hole 131 and the heat dissipating layer 132 is not limit of the invention System.
In other words, in some embodiments, the light source substrate 13 is by the heat dissipating layer 132 and the substrate layer 133 alternately stacked formation, and the heat release hole 131 passes through alternating layer, so that the heat of the heat dissipating layer 132 can pass through heat dissipation Hole 131 is scattered and disappeared, to improve the radiating efficiency of the light source substrate 13.
Further, the TOF camera module 100 includes an assembling frame 50, and the assembling frame 50 is installed in described Light source unit and the light receiver unit 20, so that 100 integration of TOF camera module.The assembling frame 50 With a light source hole 51 and a camera aperture 52, the light source hole 51 is corresponding with the TOF light source 12, in order to the TOF light The light in source 12 is projected by the light source hole 51.The camera lens 221 of the camera aperture 52 and the light receiver unit 20 It is corresponding, in order to which reflection light enters the camera lens 221 by the camera aperture 52.
Further, the assembling frame 50 can be metal material, described in order to be enhanced by the assembling frame 50 The heat dissipation performance of TOF camera module 100.
As shown in figure 19, it is TOF circuit fabrication method block diagram according to the abovementioned embodiments of the present invention.On according to the present invention State embodiment, the present invention provides a TOF and protects 112 manufacturing method 1000 of circuit, the manufacturing method comprising steps of
1001: a diverter module 1121 is provided, for adjusting electric current；
1002: a sampling module 1123, electric current in Acquisition Circuit are provided
1003: a comparison module 1125, current signal in comparison circuit are provided；With
1004: a current detection switch module 1126 is provided, according to diverter module 1121, the knot of the comparison module 1125 Fruit controls a TOF light source 12.
Further, TOF protection 112 manufacturing method 1000 of circuit comprising steps of
1005: a wrong latch module 1122 being provided, the state of the TOF light source 12 is obtained, provides information in the electricity Flow detection switch module 1126.
The step 1004 may furthermore is that: the current detection switch module 1126 is according to the diverter module 1121, the result of the comparison module 1125 and the wrong latch module 1122 controls the TOF light source 12.
It can be comprising steps of the average low-pass module 1124 of offer one, obtains the sampling module after the step 1002 The average value of 1123 electric currents obtained, is sent to the comparison module 1125.
The step 1004 can be comprising steps of offer one peak point current limitation module 1127, limits the circuit peak It is worth electric current.
Comprising steps of adjusting the capacitance resistance ware in the TOF circuit in the manufacturing method 1000, to obtain predetermined grade Output power.
Specifically, comprising steps of adjusting the diverter module 1121, the wrong latch module 1122, described average low The value of logical module 1124 and/or the capacitance resistance ware in peak point current limitation module 1127, to obtain predetermined grade output work Rate.
Further, the TOF circuit fabrication method is comprising steps of adjust the diverter module by scheduled layout setting is described 1121, in the wrong latch module 1122, the average low-pass module 1124 and/or peak point current limitation module 1127 Circuit element.
According to that above embodiment of the present invention, the present invention provides a TOF circuit heat dissipating method, is according to this as shown in figure 20 2000 block diagram of TOF circuit heat dissipating method of above-described embodiment of invention, the heat dissipating method 2000 comprising steps of
2001: an at least wiring board being provided, an at least heat release hole 131 is set in the wiring board；With
2002: one TOF circuit being set in the wiring board by predetermined cloth；
Wherein comprising steps of one heat dissipating layer 132 of attachment is in the wiring board predetermined position in the step 2001.
It include that the protection circuit 112 in the TOF circuit is neighbouring by scheduled layout setting wherein in the step 2002 The setting of one TOF light source 12；
It include the driving circuit 111 by the TOF circuit adjacent to institute by scheduled layout setting wherein in the step 2002 State the setting of TOF light source 12.
Wherein in the step 2002, being arranged by scheduled layout includes the circuit element that the TOF circuit is integrally arranged.
The above-mentioned TOF camera module 100 of the present invention can be applied to different fields, such as interaction entertainment, movement Posture detection, Expression Recognition, entertainment advertisement, medical technology, Industry Control.The TOF camera module 100 can be applied to not With electronic equipment, for example, can export to an electronic equipment 200, thus the electronic equipment in a manner of three-dimensional again Show the citing of electronic equipment described in the deep image information for the target that the TOF camera module 100 acquires ground but is not limited to intelligent hand Machine, tablet computer, wearable device, body feeling interaction equipment, distance-measuring equipment, stereoscopic imaging apparatus.The electronic equipment 200 includes One apparatus body 300, the TOF camera module 100 are arranged at the apparatus body 300, and the TOF camera module 100 is matched Close acquisition and reproduction that the apparatus body 300 realizes deep image information.Referring to Figure 21, the signal TOF is taken the mobile phone as an example Camera module 100 is by applying electronic equipment, and those skilled in the art is not it should be understood that electronic equipment as shown in the figure is Limitation of the invention.
It should be understood by those skilled in the art that foregoing description and the embodiment of the present invention shown in the drawings are only used as illustrating And it is not intended to limit the present invention.The purpose of the present invention has been fully and effectively achieved.Function and structural principle of the invention exists It shows and illustrates in embodiment, under without departing from the principle, embodiments of the present invention can have any deformation or modification.

Claims (73)

1.TOF circuit characterized by comprising
One TOF circuit of light sources；With
One photosensitive circuit；Wherein the TOF circuit of light sources is for driving a TOF light source working to generate light, and the light is through one The reflection light of target and the photosensitive circuit photosensitization, the TOF circuit of light sources and photosensitive circuit cooperation processing institute Light and reflection light information is stated, deep image information is obtained.
2. TOF circuit according to claim 1, wherein the TOF circuit of light sources includes a protection circuit, the protection electricity Road provides the scheduled limitation power of TOF light source.
3. TOF circuit according to claim 1, wherein the TOF circuit of light sources includes a protection circuit, wherein the guarantor Protection circuit includes a diverter module and a sampling module, and the diverter module and the sampling module are electrically connected side by side, to carry out Separating flow sampling.
4. TOF circuit according to claim 3, wherein the diverter module is a resistance, the sampling module is an electricity Stream detection amplifier.
5. TOF circuit according to claim 3, wherein the protection circuit includes an average low-pass module, the sampling For module output current information to the average low-pass module, it is flat that the average low-pass module processing current information obtains electric current Mean value.
6. TOF circuit according to claim 5, wherein the average low-pass module is a resistance and a capacitor.
7. TOF circuit according to claim 5, wherein the protection circuit includes a comparison module, the average low pass Module output information to the comparison module, the comparison module is compared processing.
8. TOF circuit according to claim 7, wherein the comparison module is a comparator chip.
9. TOF circuit according to claim 7, wherein the protection circuit includes a current detection switch module, it is described Comparison module output information is to the current detection switch module.
10. TOF circuit according to claim 9, wherein the current detection switch module is a current limiting load switch.
11. TOF circuit according to claim 9, wherein the protection circuit includes a wrong latch module, the shunting Module is exported to the wrong latch module, and the mistake latch module exports the status information of the TOF light source to the electricity Flow detection switch module.
12. TOF circuit according to claim 11, wherein the mistake latch module includes two series resistances and a protection Cap.
13. TOF circuit according to claim 11, wherein the current detection switch module latches mould in conjunction with the mistake The information of block and the comparison module controls the work of the TOF light source.
14. TOF circuit according to claim 11, wherein the protection circuit includes that a peak point current limits module, institute It states peak point current limitation module and is connected to the current detection switch module, with limiting circuit peak working load power.
15. TOF circuit according to claim 14, wherein peak point current limitation module is a resistance.
16. according to any TOF circuit of claim 2 to 15, wherein the circuit of light sources includes a power supply, the power supply Work energy is provided for the protection circuit.
17. according to claim 1 to 15 any TOF circuits, wherein the TOF light source is VCSEL.
18. according to any TOF circuit of claim 3 to 15, wherein the protection circuit includes a capacitor, the capacitor One end connects the diverter module, one end ground connection.
19. according to the TOF circuit any in claim 4,6,12,15, wherein the protection circuit is by adjusting capacitance-resistance Value changes limitation power, to obtain scheduled different brackets output power.
20. TOF circuit according to any one of claims 1 to 15, wherein the circuit of light sources includes one drive circuit, it is described Driving circuit is electrically connected to the photosensitive circuit, and the driving circuit drives the TOF light source working.
21. TOF circuit according to claim 20, wherein the driving circuit includes a buffer logic chip and one Mosfet transistor, the photosensitive circuit are communicatively coupled to the buffer logic chip, the buffer logic chip communication connection Institute's mosfet transistor.
22. TOF circuit according to claim 20, wherein the buffer logic chip and the mosfet transistor are neighbouring The TOF light source setting.
23. TOF circuit according to claim 21, wherein the driving circuit includes an at least resistance and a capacitor, institute It states resistance and the capacitor cooperates the buffer logic chip and mosfet transistor work.
24. TOF circuit according to claim 23, wherein the driving circuit includes 2 resistance and 6 capacitors.
25. TOF circuit according to any one of claims 1 to 15, wherein the circuit of light sources includes a temperature sensing circuit, Wherein the temperature sensing circuit detects the TOF light-source temperature.
26. TOF circuit according to claim 25, wherein the temperature sensing circuit includes a temperature sensor and an electricity Hold.
27. TOF circuit according to claim 26, wherein the temperature sensor and the capacitor are adjacent to the TOF light Source setting.
28. according to claim 1 to 15 any TOF circuits, wherein the TOF circuit includes that a nominal data saves electricity Road, for saving the nominal data of the TOF light source.
29. TOF circuit according to claim 28, wherein it includes a memory, an electricity that the nominal data, which saves circuit, Hold and a resistance.
30. TOF circuit according to claim 29, wherein the nominal data circuit is electrically connected to the interface unit.
31. TOF circuit according to any one of claims 1 to 15, including an interface unit, the interface unit is used for Output information.
32. TOF circuit according to any one of claims 1 to 15, wherein the photosensitive circuit is including a sensitive chip and extremely A few capacitor.
33. TOF circuit according to any one of claims 1 to 15, the TOF circuit is arranged at an at least circuit board, institute Circuit board is stated with an at least heat release hole.
34. TOF circuit according to claim 33, wherein the heat release hole is cooperatively arranged with the TOF light source.
35. TOF circuit according to claim 33, wherein the circuit board is equipped with an at least heat dissipating layer, the heat dissipating layer Cooperatively it is arranged with the TOF light source.
36. TOF circuit according to claim 35, wherein the heat dissipating layer is layers of copper.
37.TOF camera module protects circuit, which is characterized in that it is defeated that the protection circuit for a TOF light source provides predetermined power Out, the protection circuit includes, by adjusting the resistance value, obtaining intended power output to a resistance.
38. the TOF camera module according to claim 37 protects circuit, wherein the protection circuit includes a diverter module With a sampling module, the diverter module and the sampling module are electrically connected side by side, to be shunted.
39. the TOF camera module according to claim 38 protects circuit, wherein the diverter module is a resistance, it is described Sampling module is a current sense amplifier.
40. the TOF camera module according to claim 38 protects circuit, wherein the protection circuit includes an average low pass Module, the sampling module output current information to the average low-pass module, the average low-pass module handle the electric current Information obtains current average.
41. TOF camera module according to claim 40 protects circuit, wherein the average low-pass module be a resistance and One capacitor.
42. TOF camera module according to claim 40 protects circuit, wherein the protection circuit compares mould including one Block, for the average low-pass module output information to the comparison module, the comparison module is compared processing.
43. TOF camera module according to claim 42 protects circuit, wherein the comparison module is a comparator core Piece.
44. TOF camera module according to claim 42 protects circuit, wherein the protection circuit includes a current detecting Switch module, the comparison module output information to the current detection switch module.
45. TOF camera module according to claim 44 protects circuit, wherein the current detection switch module is a limit Current load switch.
46. TOF camera module according to claim 43 protects circuit, wherein the protection circuit includes that a mistake latches Module, the diverter module are exported to the wrong latch module, and the mistake latch module exports the state of the TOF light source Information is to the current detection switch module.
47. TOF camera module according to claim 46 protects circuit, wherein the mistake latch module includes two series connection Resistance and a protective cap.
48. TOF camera module according to claim 46 protects circuit, wherein current detection switch module combination institute The information for stating wrong latch module and the comparison module controls the work of the TOF light source.
49. TOF camera module according to claim 46 protects circuit, wherein the protection circuit includes a peak point current Module is limited, the peak point current limitation module is connected to the current detection switch module, with limiting circuit peak value work function Rate.
50. TOF camera module according to claim 49 protects circuit, wherein peak point current limitation module is an electricity Resistance.
51. circuit is protected according to any TOF camera module of claim 37 to 50, wherein the protection circuit includes one Power supply, the power supply provide work energy for the protection circuit.
52. circuit is protected according to any TOF camera module of claim 37 to 50, wherein the TOF light source is VCSEL。
53. circuit is protected according to any TOF camera module of claim 38 to 50, wherein the protection circuit includes one Capacitor, described capacitor one end connect the diverter module, one end ground connection.
54. circuit is protected according to the TOF camera module any in claim 39,41,47,50, wherein the protection is electric Road changes output power by adjusting capacitance-resistance value, to obtain scheduled different brackets output power.
55. having the TOF circuit of radiator structure, which is characterized in that including
One TOF circuit drives a TOF light source working；With
An at least wiring board, the TOF circuit board are arranged at the wiring board, and at least one wiring board is dissipated at least one Hot hole, the heat generated with the TOF circuit that scatters and disappears.
56. TOF circuit according to claim 55, wherein the heat release hole cooperates the TOF light source setting.
57. TOF circuit according to claim 55, wherein the wiring board is equipped with an at least heat dissipating layer, the heat dissipating layer It is equipped with the TOF light source.
58. TOF circuit according to claim 55, wherein the wiring board includes a light source substrate and a lens substrate, The TOF light source is arranged at the light source substrate, and the heat release hole is arranged at the light source substrate, the TOF circuit quilt It is selectively arranged at the light source substrate and the lens substrate.
59.TOF circuit fabrication method, which is characterized in that comprising steps of
(A) diverter module is provided, for adjusting electric current；
(B) sampling module, electric current in Acquisition Circuit are provided
(C) comparison module, current signal in comparison circuit are provided；With
(D) a current detection switch module is provided, a TOF light source is controlled according to the result of diverter module, the comparison module.
60. TOF circuit fabrication method according to claim 59, including step: adjusting the resistance in the TOF circuit Container piece, to obtain predetermined grade output power.
61. TOF circuit fabrication method according to claim 59, including step: providing a wrong latch module, obtain The state for taking the TOF light source provides information in the current detection switch module.
62. TOF circuit fabrication method according to claim 61, including step: providing an average low-pass module, obtain The average value for the electric current for taking the sampling module to obtain, is sent to the comparison module.
63. TOF circuit fabrication method according to claim 62, including step: providing a peak point current and limit mould Block limits the current peak electric current.
64.TOF circuit heat dissipating method, which is characterized in that comprising steps of
An at least wiring board is provided, an at least heat release hole is set in the wiring board；With
One TOF circuit is set in the wiring board by predetermined cloth.
65. TOF circuit heat dissipating method according to claim 64, including step: one heat dissipating layer of attachment is in the line Road plate predetermined position.
66. TOF circuit heat dissipating method according to claim 64, wherein including by the TOF electricity by scheduled layout setting Protection circuit in road is arranged adjacent to a TOF light source.
67. TOF circuit heat dissipating method according to claim 64, wherein including by the TOF electricity by scheduled layout setting The driving circuit on road is arranged adjacent to the TOF light source.
68. TOF circuit heat dissipating method according to claim 64, wherein including that institute is integrally arranged by scheduled layout setting State the circuit element of TOF circuit.
69.TOF camera module characterized by comprising
One light source unit；With
One light receiver unit；Wherein the light source unit generates light to a target, and light is reflected by the target, the light Line receiving unit receives reflection light, and the information of incident ray and reflection light is combined to obtain deep image information.
70. TOF camera module according to claim 69, wherein the light source unit includes a TOF light source and a light source Circuit, the circuit of light sources drive the TOF light source working.
71. TOF camera module according to claim 69, wherein light receiver unit includes a photosensitive circuit and a camera lens Component, the lens assembly receive light, are transferred to the photosensitive circuit and carry out photosensitization.
72. an electronic equipment characterized by comprising
One equipment body；With
One is arranged at the equipment according to any TOF camera module of claim 69 to 71, the TOF camera module Main body cooperates the acquisition and reproduction for realizing depth image with the equipment body.
73. the electronic equipment according to claim 72, wherein the electronic equipment is selected from combination: smart phone, plate electricity One of brain, wearable device, body feeling interaction equipment, distance-measuring equipment, stereoscopic imaging apparatus are a variety of.
CN201710358130.6A 2017-05-19 2017-05-19 TOF camera module and TOF circuit and its heat dissipating method and manufacturing method and application Pending CN108966402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710358130.6A CN108966402A (en) 2017-05-19 2017-05-19 TOF camera module and TOF circuit and its heat dissipating method and manufacturing method and application

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710358130.6A CN108966402A (en) 2017-05-19 2017-05-19 TOF camera module and TOF circuit and its heat dissipating method and manufacturing method and application

Publications (1)

Publication Number Publication Date
CN108966402A true CN108966402A (en) 2018-12-07

Family

ID=64462250

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710358130.6A Pending CN108966402A (en) 2017-05-19 2017-05-19 TOF camera module and TOF circuit and its heat dissipating method and manufacturing method and application

Country Status (1)

Country Link
CN (1) CN108966402A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109904718A (en) * 2019-03-25 2019-06-18 Oppo广东移动通信有限公司 Control system and control method, the terminal of flight time component
CN110867724A (en) * 2020-01-17 2020-03-06 常州纵慧芯光半导体科技有限公司 High-speed TOF structure and manufacturing method
CN111380668A (en) * 2018-12-27 2020-07-07 浙江舜宇智能光学技术有限公司 Precision detection system and precision detection method of depth camera
CN111381222A (en) * 2018-12-27 2020-07-07 浙江舜宇智能光学技术有限公司 Temperature calibration equipment and method for TOF camera module
CN111398968A (en) * 2018-12-28 2020-07-10 浙江舜宇智能光学技术有限公司 TOF precision detection system and precision detection method thereof
CN111741285A (en) * 2020-06-08 2020-10-02 上海龙旗科技股份有限公司 Real-time 3D scene implementation method and device
CN112073708A (en) * 2020-09-17 2020-12-11 君恒新信息科技(深圳)有限公司 Power control method and equipment for TOF camera light emission module
CN112969019A (en) * 2021-02-26 2021-06-15 深圳荆虹科技有限公司 TOF module and electronic device
CN113746064A (en) * 2021-08-16 2021-12-03 深圳荆虹科技有限公司 Overheat protection system for electronic equipment, electronic equipment and control method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012124837A1 (en) * 2011-03-14 2012-09-20 Lg Electronics Inc. An apparatus and a method for gesture recognition
US20130050425A1 (en) * 2011-08-24 2013-02-28 Soungmin Im Gesture-based user interface method and apparatus
KR101302415B1 (en) * 2012-06-27 2013-09-06 주식회사 나무가 Signal process system for automatically adjusting the focus of the 3 dimensional depth lens
US20160213315A1 (en) * 2015-01-22 2016-07-28 Elwha LLC, a limited liability company of the State of Delaware, Devices and methods for remote hydration measurement
CN105992960A (en) * 2014-02-10 2016-10-05 微软技术许可有限责任公司 VCSEL array for a depth camera
US20170005574A1 (en) * 2015-06-30 2017-01-05 David C. Wyland Power regulator having current and voltage modes
WO2017045650A1 (en) * 2015-09-15 2017-03-23 努比亚技术有限公司 Picture processing method and terminal
CN207201027U (en) * 2017-05-19 2018-04-06 浙江舜宇智能光学技术有限公司 TOF camera modules and TOF circuits and its electronic equipment

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012124837A1 (en) * 2011-03-14 2012-09-20 Lg Electronics Inc. An apparatus and a method for gesture recognition
US20130050425A1 (en) * 2011-08-24 2013-02-28 Soungmin Im Gesture-based user interface method and apparatus
KR101302415B1 (en) * 2012-06-27 2013-09-06 주식회사 나무가 Signal process system for automatically adjusting the focus of the 3 dimensional depth lens
CN105992960A (en) * 2014-02-10 2016-10-05 微软技术许可有限责任公司 VCSEL array for a depth camera
US20160213315A1 (en) * 2015-01-22 2016-07-28 Elwha LLC, a limited liability company of the State of Delaware, Devices and methods for remote hydration measurement
US20170005574A1 (en) * 2015-06-30 2017-01-05 David C. Wyland Power regulator having current and voltage modes
WO2017045650A1 (en) * 2015-09-15 2017-03-23 努比亚技术有限公司 Picture processing method and terminal
CN207201027U (en) * 2017-05-19 2018-04-06 浙江舜宇智能光学技术有限公司 TOF camera modules and TOF circuits and its electronic equipment

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111380668A (en) * 2018-12-27 2020-07-07 浙江舜宇智能光学技术有限公司 Precision detection system and precision detection method of depth camera
CN111381222A (en) * 2018-12-27 2020-07-07 浙江舜宇智能光学技术有限公司 Temperature calibration equipment and method for TOF camera module
CN111398968A (en) * 2018-12-28 2020-07-10 浙江舜宇智能光学技术有限公司 TOF precision detection system and precision detection method thereof
CN109904718A (en) * 2019-03-25 2019-06-18 Oppo广东移动通信有限公司 Control system and control method, the terminal of flight time component
CN109904718B (en) * 2019-03-25 2020-09-04 Oppo广东移动通信有限公司 Control system and control method of time-of-flight assembly and terminal
CN110867724A (en) * 2020-01-17 2020-03-06 常州纵慧芯光半导体科技有限公司 High-speed TOF structure and manufacturing method
CN111741285A (en) * 2020-06-08 2020-10-02 上海龙旗科技股份有限公司 Real-time 3D scene implementation method and device
CN112073708A (en) * 2020-09-17 2020-12-11 君恒新信息科技(深圳)有限公司 Power control method and equipment for TOF camera light emission module
CN112073708B (en) * 2020-09-17 2022-08-09 君恒新信息科技(深圳)有限公司 Power control method and equipment for TOF camera light emission module
CN112969019A (en) * 2021-02-26 2021-06-15 深圳荆虹科技有限公司 TOF module and electronic device
CN112969019B (en) * 2021-02-26 2023-08-08 深圳荆虹科技有限公司 TOF module and electronic device
CN113746064A (en) * 2021-08-16 2021-12-03 深圳荆虹科技有限公司 Overheat protection system for electronic equipment, electronic equipment and control method

Similar Documents

Publication Publication Date Title
CN108966402A (en) TOF camera module and TOF circuit and its heat dissipating method and manufacturing method and application
CN207201027U (en) TOF camera modules and TOF circuits and its electronic equipment
CN106574973B (en) The image sensor and light source drive being integrated in same semiconductor packages
CN206650757U (en) A kind of device
CN106471796B (en) The flight time image sensor and light source drive of simulated range ability
US10812194B2 (en) Information transmitting device for optical communication, optical communication method and optical communication system
US11300400B2 (en) Three-dimensional measurement device
CN109754425A (en) The calibration facility and its scaling method of TOF camera module
CN208569274U (en) Projective module group, depth capture device and terminal
CN208782911U (en) Lens assembly, sensing device and imaging system
US20220196465A1 (en) Reducing optical cross-talk in optical sensor modules
CN210719062U (en) Tracking device and scanning system based on wireless synchronization
CN209676289U (en) Electronic equipment
CN108833888A (en) Advanced treating device and three dimensional image apparatus
CN210268907U (en) Safety detection device of locker
CN109716080A (en) For contactlessly measuring the method and Infrared Measuring System of two-dimension temperature information
CN110530611A (en) Calibration method, Laser emission mould group, depth camera and electronic equipment
KR101051715B1 (en) Target module for tracking image
WO2021004349A1 (en) Structured light ranging chip module and electronic equipment
CN211603546U (en) Collection system and based on unmanned aerial vehicle flight platform's laser radar operation device
CN207417005U (en) A kind of smart machine stopped for non power driven vehicle based on Internet of Things transmission
CN205489125U (en) Can fix a position and synthesize block terminal
TWI682752B (en) Supply monitoring system for toilet paper and method thereof
CN112629667A (en) Double-spectrum thermal imaging temperature measurement system
CN109270728A (en) The high-accuracy Intelligent touch all-in-one machine of Beidou satellite navigation based on quantum glory technology

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination