CN206211685U - A kind of wireless laser charging equipment with feux rouges protection device - Google Patents

A kind of wireless laser charging equipment with feux rouges protection device Download PDF

Info

Publication number
CN206211685U
CN206211685U CN201621189545.2U CN201621189545U CN206211685U CN 206211685 U CN206211685 U CN 206211685U CN 201621189545 U CN201621189545 U CN 201621189545U CN 206211685 U CN206211685 U CN 206211685U
Authority
CN
China
Prior art keywords
laser
protection device
feux rouges
solar panel
charging
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.)
Active
Application number
CN201621189545.2U
Other languages
Chinese (zh)
Inventor
尹浩
李�真
朱思祁
何铁锋
李安明
付神贺
张沛雄
陈振强
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.)
Jinan University
Original Assignee
Jinan University
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 Jinan University filed Critical Jinan University
Priority to CN201621189545.2U priority Critical patent/CN206211685U/en
Application granted granted Critical
Publication of CN206211685U publication Critical patent/CN206211685U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Landscapes

  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The utility model discloses a kind of wireless laser charging equipment with feux rouges protection device, including Laser emission end and laser pick-off end, Laser emission end includes X-axis controlled motor, supporting plate, Y-axis controlled motor, generating laser, some photoelectric sensors;Laser pick-off end includes some red lasers, solar panel, charging control circuit;Generating laser and photoelectric sensor are mounted in supporting plate, and supporting plate is rotatable in the horizontal direction by the coupled X-axis controlled motor, can pitching in vertical direction by the coupled Y-axis controlled motor.The equipment has charge efficiency high; energy loss is few; charging rate is fast; do not limited by distance, charging device appearance and size is small, can be charged outer optional position indoors; and using invisible wave band light wave as energy transmission form; light pollution and the interference to signal of communication are not resulted in, while being provided with feux rouges protection device, it is ensured that the personal security in charging process.

Description

A kind of wireless laser charging equipment with feux rouges protection device
Technical field
The utility model is related to wireless charging technical field, and in particular to a kind of wireless laser with feux rouges protection device Charging equipment.
Background technology
Due to the intermittence of sunshine, limiting too can be used as the cruising time of power.In order to further extend continuation of the journey Time, it will be following study hotspot that various non-contacting remote power feedings are carried out with laser in place solar energy.
Laser radio energy transmission technology is risen in 2000 or so, obtains quick as high power laser technology develops Development.Because laser has the advantages that good monochromaticjty, good directionality, energy are concentrated, even if under conditions of smaller transmission power, Laser radio energy transmission system can also realize remote electric energy transmission, the transmitting and receiving apparatus required for simultaneity factor Volume and quality only need to the 1/10 of similar microwave equipment.Laser charge can be widely applied to national defence, new-energy automobile and The various fields such as electronic product, it is possible to achieve many specific uses, its application prospect is had an optimistic view of by increasing people.
But laser radio energy transmission technology is related to laser structure design, high power laser light transmission in an atmosphere Under efficiency, one-wavelength laser radiation the problems such as photocell transformation efficiency.The either leading America and Europe of laser technology, or laser technology The relatively backward country, laser charging technique is all at the early-stage, and relevant report is very few.
At present, in the patent in domestic only several associated laser charging technique fields, a kind of " wireless laser charger (CN201110162766.6) ", " wireless charging system (CN201210172781.3) ", " wireless charging processing method and equipment (CN201280002607.2) ", " the long distance laser charging equipment (CN201410207809.1) with safeguard measure ", " one Kind laser charging process method and apparatus (CN201410544044.0) ", " long distance laser transmission electric supply installation 201420291770.1 ", the patent such as " laser radio energy output system (CN201310524728.X) " is described in block form an The flow that laser charges, without reference to Related Technical Issues.
" indoor automatic laser charging system and method (CN20110097652.0) ", " a kind of unmanned plane is filled with wireless laser Two patents of electric equipment and its charging system (CN201510102715.2) " propose that laser fills in terms of machinery, control, communication etc. The methods of electricity, but the specific design not on laser and solar panel, are more mutually matched without both and obtain Take the specific embodiment of best photoelectric conversion efficiency.Satellite borne laser wireless energy transfer system (CN201210593990.5) pin The scheme proposed to the particular/special requirement of space industry, it is not only with high costs with complicated to Barebone, and using complexity, It is required that user of service's specialty requires height.There is no the related element for solving laser facula problem of non-uniform, Zhi Nengyong in scheme simultaneously In laser irradiate single photocell, there is provided not high-power energy.
Utility model content
The purpose of this utility model is to solve drawbacks described above of the prior art, there is provided there is one kind feux rouges to protect dress The wireless laser charging equipment put.
The purpose of this utility model can be reached by adopting the following technical scheme that:
A kind of wireless laser charging equipment with feux rouges protection device, including Laser emission end and laser pick-off end, institute Stating Laser emission end includes:X-axis controlled motor 1, supporting plate 2, Y-axis controlled motor 3, generating laser 4, some photoelectric sensors 5;The laser pick-off end includes:Some red lasers 7, solar panel 8, charging control circuit 9;
The generating laser 4 and the photoelectric sensor 5 are mounted in the supporting plate 2, and the supporting plate 2 is led to Cross that the coupled X-axis controlled motor 1 is rotatable in the horizontal direction, existed by the coupled Y-axis controlled motor 3 Vertical direction can pitching;
The photoelectric sensor 5 is uniformly equally spaced installed on the surrounding of the generating laser 4, the red laser 7 uniform surroundings for being equally spaced installed on the solar panel 8, the photoelectric sensor 5 and the Laser emission The position of device 4 is right against the red laser 7 and the solar panel 8 respectively;
All red lasers 7 are opened and send visible red during charging, only when all photoelectric sensors 5 After the optical signal that the corresponding red laser 7 is sent can be had correctly received, signal is issued phase by the photoelectric sensor 5 The charging control circuit 9 even, the control relay of the charging control circuit 9 is powered, and triggering transmitting terminal opens Laser emission Laser;
Outside terminal device is connected with the solar panel 8 by the charging control circuit 9 and receives power supply.
Further, it is the red laser of the 650nm of milliwatt that the red laser 7 uses power.
Further, the laser pick-off end also includes laser beam adjuster 6, is fixed on the solar cell The anterior position of plate 8, for adjusting laser facula size so that laser facula is evenly radiated into the whole solar panel On 8.
Further, the laser beam adjuster 6 is single element lens or compound lens.
Further, the solar panel 8 is made up of multiple photovoltaic cell module connection in series-parallel.
Further, the generating laser 4 uses semiconductor laser.
Further, the generating laser 4 uses 808nm long wavelength semiconductor lasers.
Further, the solar panel 8 uses the photovoltaic cell module of GaAs materials.
Further, outside terminal device is connected simultaneously by the charging control circuit 9 with the solar panel 8 Power supply is received, wherein the charging control circuit 9 also has carries out voltage stabilizing current limliting to the electric energy of the output of the solar panel 8 Function, there is provided the electric current of stabilization is exported to outside terminal device.
The utility model has the following advantages and effect relative to prior art:
1) a kind of wireless laser charging equipment with feux rouges protection device has transmission range disclosed in the utility model Far, the features such as efficiency of transmission is high, reception device is small, charging rate is fast and efficiency high, suitable miniaturized electronics are used.Wireless charging Electric installation using semiconductor substance (i.e. using electronics) can band-to-band transition light, with more frequency is accurate, temperature stabilization characteristic. And efficiency of transmission is with the decay very little of transmission range, the energy loss of Laser Transmission is less than 1% within 10 meters.
2) a kind of wireless laser charging equipment with feux rouges protection device disclosed in the utility model uses laser conduct Carrier, i.e. transmitting terminal convert electrical energy into laser energy and are transmitted into receiving terminal, and receiving terminal converts a laser into electric energy again.Overcome Microwave emission and reception device are huge, are not suitable for the portable requirement for using;Turn avoid induction middle inductance capacitor Frequency of oscillation matching problem caused by part individuality deviation and temperature drift.Using invisible wave band light wave as energy transmission Form, does not result in light pollution and the interference to signal of communication.Can accomplish to be wirelessly transferred, electromagnetic wave principle can be effectively overcome again Defect, realizes that remote-wireless charges.
3) a kind of wireless laser charging equipment with feux rouges protection device disclosed in the utility model is swashed using semiconductor Light device or diode pumping solid laser are used as wireless charging power supply, with lightweight, operating reliability, little power consumption, Efficiency high, small volume, the advantage of good portability.The wherein beam density of 808nm long wavelength semiconductor lasers, wavelength and GaAs materials The energy gap width matching of the photovoltaic cell module of material, it is big with photoelectric transformation efficiency, the characteristics of thermal losses is small.
4) a kind of wireless laser charging equipment with feux rouges protection device uses laser beam disclosed in the utility model The laser beam divergent angle of adjuster optimization laser output and the uniformity of raising output laser energy.Ensure that hot spot uniformly covers Cover, and spot size is matched with photocell piece, reaches the minimum purpose of light loss.Solve Laser beam energy distribution uneven, lead Cause photocell receiver inefficiency problem.
5) a kind of wireless laser charging equipment multiple photocell string with feux rouges protection device disclosed in the utility model Parallel connection constitutes solar panel, solves only series connection photocell when by uneven illumination, and current limited is in photogenerated current Minimum photocell, causes the loss of energy and " hot spot " phenomenon;And then voltage is low there was only photocell in parallel, light intensity difference between branch road It is different the problems such as be likely to result in electric current backflow, optimize circuit connecting mode, it is ensured that photocell not the influence of Stimulated Light inhomogeneities and it is inclined From maximum power point, the efficiency of photocell receiver is improved.
6) a kind of wireless laser charging equipment with feux rouges protection device uses horizontal direction disclosed in the utility model It is rotatable, vertical direction can pitching two-dimentional work bench, the two-dimensional freedom of workbench by wireless remote control control, with big Working range, is accurately controlled accurate.Ensure laser convenient with photovoltaic cell module and accurately align, be conducive to layman's Use.
7) swashed using feux rouges in a kind of wireless laser charging equipment with feux rouges protection device disclosed in the utility model Light device and red light sensor are combined, and control relay opens electricity, power-off, it is to avoid someone is strayed into during laser light is shone and damages, effectively The harm for avoiding laser.
Brief description of the drawings
Fig. 1 is a kind of structural frames of the wireless laser charging equipment with feux rouges protection device disclosed in the utility model Figure.
Specific embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer Accompanying drawing in type embodiment, is clearly and completely described, it is clear that retouched to the technical scheme in the utility model embodiment The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to The scope of the utility model protection.
Embodiment
As shown in figure 1, present embodiment discloses a kind of wireless laser charging equipment with feux rouges protection device, the equipment Laser energy is converted electrical energy into as carrier, i.e. transmitting terminal using laser and is transmitted into receiving terminal, receiving terminal again converts laser It is electric energy.Overcome Microwave emission and reception device is huge, be not suitable for the portable requirement for using;Turn avoid induction Frequency of oscillation matching problem caused by middle inductance capacitance device individuality deviation and temperature drift.Using invisible wave band light wave As energy transmission form, light pollution and the interference to signal of communication are not resulted in.Can accomplish to be wirelessly transferred, again can effective gram Electromagnetic wave principle defect is taken, realizes that remote-wireless charges.
The laser far-distance wireless charging device by the X-axis controlled motor 1 of transmitting terminal, supporting plate 2, Y-axis controlled motor 3, The laser beam adjuster 6 of generating laser 4, photoelectric sensor 5 and receiving terminal, red laser 7, solar panel 8, Charging control circuit 9, terminal device 10 are constituted.
One two-dimentional work bench is constituted by X-axis controlled motor 1, supporting plate 2, Y-axis controlled motor 3, for generating laser 4 Installation is fixed and rotation, the pitching of vertical direction of horizontal direction, it is ensured that the bidimensional free degree of laser, be easy to catching for laser Obtain.X-axis controlled motor and Y-axis controlled motor (two motors) can be by the electric terminal bluetooth controls such as Digiplex or mobile phone System, for generating laser 4 and the quick and precisely alignment of solar panel.
It is rotatable using horizontal direction in concrete application, vertical direction can pitching two-dimentional work bench, the two dimension of workbench The free degree, with wide working range, is accurately controlled accurate by wireless remote control control.Ensure that laser is convenient with photovoltaic cell module And accurately align, be conducive to the use of layman.
Red laser 7 is the red laser of 650nm that power is several milliwatts, and photoelectric sensor 5 is corresponding wavelength Sensor.
Some photoelectric sensors 5 are uniformly equally spaced installed on the surrounding of generating laser 4, and some red lasers 7 are then equal Even to be equally spaced installed on the surrounding of solar cell energy plate 8, the photoelectric sensor 5 is identical with the quantity of the red laser 7, and And setting is corresponded, for shielding, it is to avoid personnel damage in swarming into laser in charging process.
All red lasers 7 open feux rouges during charging, only when all photoelectric sensors 5 can have correctly received correspondence The red signal light sent of red laser 7 after, it is ensured that, just to laser pickoff, photoelectric sensor 5 is by signal for generating laser Charging control circuit 9 is issued, the control relay of charging control circuit 9 is powered, open Laser emission laser.Laser is in charging process In, if the photoelectric sensor 5 of any position is not received by visible light signal, illustrate that possible someone is strayed into laser light photograph, Now, the control relay of charging control circuit 9 power-off so that normally opened contact disconnects, and generating laser is closed immediately, until photoelectricity Sensor 5 recovers to receive the optical signal that red laser 7 is sent, and can just be again turned on generating laser.
The anterior position of solar panel 8 is provided with laser beam adjuster 6, for adjusting laser facula size, makes Laser facula is substantially homogeneous to be irradiated on whole solar panel 8, occur without hot spot it is too small with respect to solar panel 8 or The excessive phenomenon of person.This ensures that solar panel 8 is overheated and damaged neither under the irradiation of light laser transmitter;Again Will not hot spot is excessive is wasted beyond the range of receiving of solar panel 8, reduce intensity of illumination so as to charging current declines;Also keep away Laser facula size is just adjusted when having exempted from laser emitting, expands the angle of divergence, cause laser in the loss of transmitting procedure, improve biography Defeated distance.
In concrete application, the laser beam divergent angle and raising exported using laser beam adjuster optimization laser are exported The uniformity of laser energy.Ensure hot spot uniform fold, and spot size is matched with photocell piece, reaches light loss minimum Purpose.Solve Laser beam energy distribution uneven, cause photocell receiver inefficiency problem.
Solar panel 8 is made up of multiple photovoltaic cell module connection in series-parallel, uneven according to Energy distribution for overcoming laser light, Cause photocell receiver inefficiency problem, laser signal is changed into electric signal by solar panel 8, and electric signal is by filling The boosting voltage stabilizing of electric control circuit 9 is amplified, and realizes that the long distance wireless of terminal device 10 charges.
In concrete application, solar panel is constituted using multiple photovoltaic cell module connection in series-parallel, solve only series connection photocell When by uneven illumination, current limited causes the loss of energy and " hot spot " existing to plate in the minimum photocell of photogenerated current As;And photocell only in parallel then voltage is low, the problems such as light-intensity difference is likely to result in electric current backflow between branch road, optimization circuit connection Mode, it is ensured that Stimulated Light inhomogeneities does not influence and deviates maximum power point photocell, improves the efficiency of photocell receiver.
In concrete application, acquisition optimal light is mutually matched for both the specific generating laser of consideration and solar panel The purpose of design of photoelectric transformation efficiency, is used using semiconductor laser transmitter as wireless charging power supply, with lightweight, operating Reliability, little power consumption, efficiency high, small volume, the advantage of good portability.The wherein light beam of 808nm wavelength semiconductors generating laser Density, wavelength are matched with the energy gap width of the photovoltaic cell module of GaAs materials, big with photoelectric transformation efficiency, the small spy of thermal losses Point, wherein, photoelectric transformation efficiency is up to 50%.
In sum, the utility model proposes a kind of wireless laser charging equipment with feux rouges protection device have fill Electrical efficiency is high, and energy loss is few, and charging rate is fast, is not limited by distance, and charging device appearance and size is small, can be outer any indoors Position is charged, easy-to-use, and using invisible wave band light wave as energy transmission form, do not result in light pollution and Interference to signal of communication.Feux rouges protection system is installed simultaneously, it is ensured that the personal security in charging process.
Above-described embodiment is the utility model preferably implementation method, but implementation method of the present utility model is not by above-mentioned The limitation of embodiment, it is other it is any without departing from the change made under Spirit Essence of the present utility model and principle, modify, replace Generation, combination, simplification, should be equivalent substitute mode, be included within protection domain of the present utility model.

Claims (9)

1. a kind of wireless laser charging equipment with feux rouges protection device, including Laser emission end and laser pick-off end, it is special Levy and be, the Laser emission end includes:X-axis controlled motor (1), supporting plate (2), Y-axis controlled motor (3), generating laser (4), some photoelectric sensors (5);The laser pick-off end includes:Some red lasers (7), solar panel (8), fill Electric control circuit (9);
The generating laser (4) and the photoelectric sensor (5) are mounted in the supporting plate (2), the supporting plate (2) it is rotatable in the horizontal direction by the coupled X-axis controlled motor (1), controlled by the coupled Y-axis Motor (3) can pitching in vertical direction;
The photoelectric sensor (5) is uniformly equally spaced installed on the surrounding of the generating laser (4), the red laser (7) the then uniform surrounding for being equally spaced installed on the solar panel (8), the photoelectric sensor (5) and described swashs The position of optical transmitting set (4) is right against the red laser (7) and the solar panel (8) respectively;
All red lasers (7) are opened and send visible red during charging, only when all photoelectric sensors (5) After the optical signal that the corresponding red laser (7) is sent can be had correctly received, the photoelectric sensor (5) sends out signal To the connected charging control circuit (9), charging control circuit (9) control relay is powered, and triggering transmitting terminal is opened Laser emission laser;
Outside terminal device is connected with the solar panel (8) by the charging control circuit (9) and receives power supply.
2. a kind of wireless laser charging equipment with feux rouges protection device according to claim 1, it is characterised in that
It is the red laser of the 650nm of milliwatt that the red laser (7) uses power.
3. a kind of wireless laser charging equipment with feux rouges protection device according to claim 1, it is characterised in that
The laser pick-off end also includes laser beam adjuster (6), is fixed on the solar panel (8) front position Put, for adjusting laser facula size so that laser facula is evenly radiated on the whole solar panel (8).
4. a kind of wireless laser charging equipment with feux rouges protection device according to claim 3, it is characterised in that
The laser beam adjuster (6) is single element lens or compound lens.
5. a kind of wireless laser charging equipment with feux rouges protection device according to claim 1, it is characterised in that
The solar panel (8) is made up of multiple photovoltaic cell module connection in series-parallel.
6. a kind of wireless laser charging equipment with feux rouges protection device according to claim 1, it is characterised in that
The generating laser (4) uses semiconductor laser.
7. a kind of wireless laser charging equipment with feux rouges protection device according to claim 6, it is characterised in that
The generating laser (4) uses 808nm long wavelength semiconductor lasers.
8. a kind of wireless laser charging equipment with feux rouges protection device according to claim 1, it is characterised in that
The solar panel (8) uses the photovoltaic cell module of GaAs materials.
9. a kind of wireless laser charging equipment with feux rouges protection device according to claim 1, it is characterised in that
Outside terminal device is connected with the solar panel (8) by the charging control circuit (9) and receives power supply, Wherein described charging control circuit (9) also has carries out the work(of voltage stabilizing current limliting to the electric energy of the solar panel (8) output Can, there is provided the electric current of stabilization is exported to outside terminal device.
CN201621189545.2U 2016-10-28 2016-10-28 A kind of wireless laser charging equipment with feux rouges protection device Active CN206211685U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621189545.2U CN206211685U (en) 2016-10-28 2016-10-28 A kind of wireless laser charging equipment with feux rouges protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621189545.2U CN206211685U (en) 2016-10-28 2016-10-28 A kind of wireless laser charging equipment with feux rouges protection device

Publications (1)

Publication Number Publication Date
CN206211685U true CN206211685U (en) 2017-05-31

Family

ID=58752687

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621189545.2U Active CN206211685U (en) 2016-10-28 2016-10-28 A kind of wireless laser charging equipment with feux rouges protection device

Country Status (1)

Country Link
CN (1) CN206211685U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107834714A (en) * 2017-11-02 2018-03-23 浙江工业大学 Laser radio charging device based on integrating rod homogenizer technology
CN107834715A (en) * 2017-11-02 2018-03-23 浙江工业大学 Laser radio charging device based on kaleidoscope homogenizer technology

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107834714A (en) * 2017-11-02 2018-03-23 浙江工业大学 Laser radio charging device based on integrating rod homogenizer technology
CN107834715A (en) * 2017-11-02 2018-03-23 浙江工业大学 Laser radio charging device based on kaleidoscope homogenizer technology

Similar Documents

Publication Publication Date Title
CN206302216U (en) A kind of wireless laser charging equipment based on speculum rotation
CN106549511A (en) Based on the visible laser far-distance wireless charging device for indicating light protection
CN106385116A (en) Laser long-distance wireless charging device based on rotating emission lens
Sabarish et al. An Energy Efficient Microwave Based Wireless Solar Power Transmission System
CN109639353A (en) It is a kind of that energy communication device is taken based on resonance light beam
CN206211685U (en) A kind of wireless laser charging equipment with feux rouges protection device
CN204408031U (en) A kind of unmanned plane wireless laser charging device and charging system thereof
CN103337542B (en) A kind of Laser-electrical energy converter
CN201113567Y (en) Radio electricity energy remote transmission device
CN107769723A (en) Integrating sphere type photovoltaic receiver device for laser radio charging
CN104993613A (en) Wireless electric energy transmission device using single capacitor to realize electric field resonance
CN105515077A (en) Laser charging processing method and device
CN107658927A (en) Adaptive mobile optics charging system based on feedback signaling
CN105072785A (en) Remote intelligent wireless charging system
CN107933351A (en) A kind of unmanned plane charging method based on the transmission of laser radio electric energy
CN106505748A (en) The reverse wireless power supply system of unmanned aerial vehicle onboard energy storage and method of supplying power to
CN103915658A (en) Wireless charging method and its apparatus
CN107681764A (en) Laser charging device with thermo-electric generation compensation
CN106208422B (en) Wireless charging method and device
CN107733105A (en) Contactless power transmission device
CN109150305B (en) Remote laser communication device
Kim et al. Optimization of optical wireless power transfer using near-infrared laser diodes
CN108469680A (en) A kind of laser light source
CN207475291U (en) A kind of long distance laser wireless charging emitter
CN102709962B (en) Sensor network long-distance charging and power supplying system based on laser light source

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant