CN204925599U - Laser projection appearance - Google Patents
Laser projection appearance Download PDFInfo
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- CN204925599U CN204925599U CN201520724253.3U CN201520724253U CN204925599U CN 204925599 U CN204925599 U CN 204925599U CN 201520724253 U CN201520724253 U CN 201520724253U CN 204925599 U CN204925599 U CN 204925599U
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- laser
- power
- communication module
- supply
- scanner
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- 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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model discloses a laser projection appearance, including a plurality of laser sources, main control unit, scanner, communication module, electrical power generating system, electrical power generating system includes mains input terminal, switch button, measurement device, treater, electrical source controller, a plurality of power module, switching power supply, power module is connected after looping through switch button and measurement device to the alternating current of mains input terminal output, and power module connects laser source, main control unit and scanner respectively, the output of measurement device links to each other with the treater, and the treater is connected with electrical source controller and communication module respectively. The utility model provides a laser projection appearance can make the user clearly know with electrical apparatus whether in the work down of normal power, intelligent degree is high, convenient to use, fail safe nature height, can prevent the aliasing to can improve luminance under the condition that the size that does not have actual image was lost, satisfy the required rank of eyes safety standard.
Description
Technical field
The utility model belongs to Color Laser Projection Technology field, particularly a kind of laser-projector.
Background technology
Projector has become the product that modern business personage commonly uses.With existing numerical digit optical processor (DigitalLightProcession, or silicon wafer light technology (LiquidCrystalonSilicon DLP), LCoS) compare, laser-projector because its power consumption is less, projection image larger (can more than 100 cun) and become the product of people's favor without the need to the advantage of focusing.As the laser-projector taking laser instrument as light source, it, by the scanning mirror of the electromagnetic drive mode of reciprocally swinging, makes the laser from LASER Light Source show image in the enterprising line scanning of screen.Scanning mirror has density according to its size and material, hardness and the intrinsic resonant frequency determined, by driving with this resonant frequency, scanning mirror can be made to swing with maximum pivot angle, thus with the larger image of low electric power display.
Laser-projector can comprise lasing light emitter, optical modulator, optical system, optical scanner and image controller.In this case, lasing light emitter comprises the red laser for generation of red laser, the green laser for generation of green laser and the blue laser for generation of blue laser.Lasing light emitter by produced Laser emission to optical modulator.Laser modulator is modulated according to the laser of the graphics control signals of image controller to incidence, to generate diffraction light, and generated diffraction light is emitted to optical system.Then, the diffraction light generated is sent to optical scanner via optical system, and optical scanner scans to show image to light, and simultaneously according to the mirror control signal of image controller, mirror rotates the angle preset.
In this case, the brightness of laser-projector is uncontrollable, easily causes certain injury to the eyes of user; And in transmitting procedure, easily there is the situation of image fault.Whether the duty of the internal components of laser-projector normally also cannot be inferred, easily occurs transshipping the situation causing device failure during long-term work.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of intelligence degree high, easy to use, can aliasing be prevented, and brightness can be improved when there is no the size penalty of real image, meeting the laser-projector of the rank needed for eye-safe standard.
The purpose of this utility model is achieved through the following technical solutions: a kind of laser-projector, comprises
Multiple lasing light emitter, for Emission Lasers bundle;
Master controller, on the specific region controlling directly to be incident on screen, the angle of departure of the laser that each lasing light emitter and each lasing light emitter generate is poor with generation time;
Scanner, for scanning each laser on screen, the laser that wherein main controller controls respectively scans only exports real image for the overlapping region on described screen;
Communication module, for data message is sent to server or user terminal and be used for reception server or user terminal send instruction;
Power-supply system, for providing power supply for all the other equipment of projector inside, power-supply system comprises
Mains electricity input end, connects civil power;
Power switch button, for the power switch of Non-follow control power-supply system;
Metrology devices, for detecting the voltage of supply module output or/and electric current is or/and power;
Processor, for judging whether the voltage of supply module or electric current or power exceed setting limit value and exceed setting limit value duration;
Power-supply controller of electric, opens and closes for controlling supply module according to the signal of processor signal or communication module;
Multiple supply module is all the other module for power supply in projector;
Switching Power Supply, the alternating current for being inputted by civil power is transformed into low voltage and direct current and provides power supply for internal circuitry;
The alternating current that mains electricity input end exports is connected supply module by after power switch button and metrology devices successively, and supply module connects lasing light emitter, master controller and scanner respectively; The output of metrology devices is connected with processor, and processor is connected with communication module with power-supply controller of electric respectively.
Further, described laser-projector also comprises
Drive singal maker, for the laser driver in driving laser source and the scanner driver of driving scanner;
Laser driver, for the laser drive signal driving laser source generated based on drive singal maker;
Scanner driver, drives scanner for the scanner drive signal generated based on drive singal maker;
The input end of drive singal maker is connected with master controller, and the output terminal of drive singal maker is connected with laser driver and scanner driver respectively, and the output terminal of laser driver is connected with lasing light emitter, and the output terminal of scanner driver connects scanner.
Further, described laser-projector also comprises
Location of pixels detecting device, for detecting the current pixel position expecting the image be presented on screen;
Offset determiner, for determining the brightness offset value corresponding with detected pixel;
Compensating unit, the compensating signal for compensating the laser drive signal corresponding with detected pixel is generated, little by little to increase towards away from the direction of at least one benchmark pixel preset in each horizontal line of single frames whole pixels accordingly or to reduce brightness offset value based on determined brightness offset value;
The input end of location of pixels detecting device is connected with drive singal maker, and the output terminal of location of pixels detecting device connects offset determiner and compensating unit successively, and the output terminal of compensating unit is connected with drive singal maker.
Further, be provided with an overload protecting circuit between described mains electricity input end and power switch button, overload protecting circuit is connected with processor.
Further, described supply module comprises breaker device and power supply output terminal, the control input end of breaker device is connected with power-supply controller of electric, the alternating current input end of breaker device is connected with the output terminal of metrology devices, the ac output end of breaker device connects power supply output terminal, and the signal input part of metrology devices is connected with power supply deferent segment.Described breaker device comprises thyristor or relay.
Further, described power switch button marine site Switching Power Supply is connected, and described Switching Power Supply adopts AC-DC Switching Power Supply, alternating current 220V is changed into 5V, for system provides power supply.
Further, described communication module comprises wire communication or/and wireless communication module, wire communication module comprises one or both the combination in RS485 communication module or RS232 communication module, and wireless communication module comprises the combination of one or more in ZigBee communication module, WiFi communication module, infrared communication module or RFID communication module.
The beneficial effects of the utility model are:
1, laser-projector of the present utility model user can be made to know clearly whether internal unit works under normal power source, user can according to actual conditions determine whether close electricity consumption; User also can send cut-offing instruction by server or user terminal, and after communication module receives cut-offing instruction, power-supply controller of electric just can cut off the power supply of supply module according to cut-offing instruction; When the voltage of power supply exceedes the power-off limit value of setting, power-supply controller of electric also can automatic cut-off power, avoids projector internal unit and works under power supply abnomal condition, be conducive to protecting consumer; After cutting off the electricity supply, the instruction of all right resetting starting of user, after communication module receives start-up command, power-supply controller of electric just can restore electricity according to start-up command, and intelligence degree is high, uses very convenient, be conducive to the serviceable life of prolongation equipment, and safe reliability is high;
2, can aliasing be prevented, and brightness can be improved when there is no the size penalty of real image, meet the rank needed for eye-safe standard, effectively improve the restriction in the brightness being arranged on conventional laser-projector;
3 and have overload protection function, have communication, user can need select according to self, easy to use, effectively can improve user satisfaction.
Accompanying drawing explanation
Fig. 1 is laser-projector structured flowchart of the present utility model.
Embodiment
The technical solution of the utility model is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of laser-projector, comprises
Multiple lasing light emitter, for Emission Lasers bundle;
Master controller, on the specific region controlling directly to be incident on screen, the angle of departure of the laser that each lasing light emitter and each lasing light emitter generate is poor with generation time;
Scanner, for scanning each laser on screen, the laser that wherein main controller controls respectively scans only exports real image for the overlapping region on described screen;
Communication module, for data message is sent to server or user terminal and be used for reception server or user terminal send instruction;
Power-supply system, for providing power supply for all the other equipment of projector inside, power-supply system comprises
Mains electricity input end, connects civil power;
Power switch button, for the power switch of Non-follow control power-supply system;
Metrology devices, for detecting the voltage of supply module output or/and electric current is or/and power;
Processor, for judging whether the voltage of supply module or electric current or power exceed setting limit value and exceed setting limit value duration;
Power-supply controller of electric, opens and closes for controlling supply module according to the signal of processor signal or communication module;
Multiple supply module is all the other module for power supply in projector;
Switching Power Supply, the alternating current for being inputted by civil power is transformed into low voltage and direct current and provides power supply for internal circuitry;
The alternating current that mains electricity input end exports is connected supply module by after power switch button and metrology devices successively, and supply module connects lasing light emitter, master controller and scanner respectively; The output of metrology devices is connected with processor, and processor is connected with communication module with power-supply controller of electric respectively.
Further, described laser-projector also comprises
Drive singal maker, for the laser driver in driving laser source and the scanner driver of driving scanner;
Laser driver, for the laser drive signal driving laser source generated based on drive singal maker;
Scanner driver, drives scanner for the scanner drive signal generated based on drive singal maker;
The input end of drive singal maker is connected with master controller, and the output terminal of drive singal maker is connected with laser driver and scanner driver respectively, and the output terminal of laser driver is connected with lasing light emitter, and the output terminal of scanner driver connects scanner.
Further, described laser-projector also comprises
Location of pixels detecting device, for detecting the current pixel position expecting the image be presented on screen;
Offset determiner, for determining the brightness offset value corresponding with detected pixel;
Compensating unit, the compensating signal for compensating the laser drive signal corresponding with detected pixel is generated, little by little to increase towards away from the direction of at least one benchmark pixel preset in each horizontal line of single frames whole pixels accordingly or to reduce brightness offset value based on determined brightness offset value;
The input end of location of pixels detecting device is connected with drive singal maker, and the output terminal of location of pixels detecting device connects offset determiner and compensating unit successively, and the output terminal of compensating unit is connected with drive singal maker.
Further, be provided with an overload protecting circuit between described mains electricity input end and power switch button, overload protecting circuit is connected with processor.
Further, described supply module comprises breaker device and power supply output terminal, the control input end of breaker device is connected with power-supply controller of electric, the alternating current input end of breaker device is connected with the output terminal of metrology devices, the ac output end of breaker device connects power supply output terminal, and the signal input part of metrology devices is connected with power supply deferent segment.Described breaker device comprises thyristor or relay.
Further, described power switch button marine site Switching Power Supply is connected, and described Switching Power Supply adopts AC-DC Switching Power Supply, alternating current 220V is changed into 5V, for system provides power supply.
Further, described communication module comprises wire communication or/and wireless communication module, wire communication module comprises one or both the combination in RS485 communication module or RS232 communication module, and wireless communication module comprises the combination of one or more in ZigBee communication module, WiFi communication module, infrared communication module or RFID communication module.
Lasing light emitter of the present utility model can comprise the lasing light emitter of multiple different colours, such as relevant to the general process of picture signal red laser, green laser and blue laser.As a result, should ground with laser relative, for red, green and blue, the laser drive signal generated by drive singal maker can comprise picture signal and horizontal-drive signal and vertical synchronizing signal.
Drive singal maker can generate scanning drive signal based on the horizontal-drive signal of generated laser drive signal and vertical synchronizing signal.In this case, the scanning drive signal generated can comprise horizontal scanner drive singal and orthoscanner drive singal.
Laser driver generates based on received laser drive signal and comprises red laser source, the voltage of lasing light emitter of green laser source and blue laser source or electric current for driving.Lasing light emitter generates laser with the level corresponding with the voltage or electric current that are applied to it.Scanner driver can comprise sinusoidal wave generation circuit, triangular wave generating circuit and signal synthesis circuit.Scanner driver generates the driving frequency for driving scanner based on received scanner drive signal.Drive scanner based on horizontal drive frequency level, and drive scanner based on vertical drive frequency vertical, scanner then scans laser on screen, to realize image on screen.
Scanner receives from lasing light emitter (such as, red laser source (R), green laser source (G) and blue laser source (B)) respectively with the laser of different incident angles input.Scanner projects received each laser according to scanner drive signal based on the control of scanner driver on screen.In this case, scanner is different from actuating speed along another horizontal line along the actuating speed of horizontal line in single frames of image.Therefore, the brightness irregularities of shown image.
In this case, laser-projector of the present utility model can compensate the laser drive signal generated by drive singal maker, and can revise the brightness of output image at identical conditions more equably.
Location of pixels detecting device detects the position of the pixel corresponding with single frames from generated scanner drive signal.In other words, location of pixels detecting device can detect the current pixel position expecting the image be presented on screen.Offset determiner determines the brightness offset value corresponding with detected pixel.Compensating unit can generate compensating signal for compensating the laser drive signal corresponding with detected pixel based on determined brightness offset value, little by little to increase towards away from the direction of at least one benchmark pixel preset in each horizontal line of single frames whole pixels accordingly or to reduce brightness offset value.
The compensating signal generated by compensating unit is output to drive singal maker, and drive singal maker generates the laser drive signal of the compensating signal compensation through input.Laser driver based on through compensate laser drive signal driving laser source, make lasing light emitter can generate through compensate laser.Therefore, scanner scans the laser through compensating on screen, and it can provide the image with uniform luminance, and the luminance distortion produced by the velocity variations of scanner in image obtains compensation.
The signal processing method of laser-projector of the present utility model comprises the following steps:
S1, respectively generate in multiple lasing light emitter laser with;
S2, on screen, scan the laser generated in lasing light emitter, comprise the following steps:
S21, for according to the signal transacting in laser-projector of the present utility model, determine the angle of departure of each lasing light emitter, and determine the driving time of each lasing light emitter based on the angle of departure of each lasing light emitter;
S22, generate the laser-driven signal of each lasing light emitter based on the determined angle of departure and driving time, and generate scanner drive signal;
S23, based on generated laser-driven signal, be incident to scanner from the laser comprising picture signal of each lasing light emitter incidence, and based on scanner drive signal, laser be incident upon on screen by scanner.
In this case, the angle of departure of each lasing light emitter can differently be controlled to be created on the mistiming of presetting produced in the projection of laser.The angle of departure that the amount of laser light of the scanning of each lasing light emitter in the period of presetting is maximum can be determined.And, the angle of departure of each lasing light emitter is the laser projection angle for scanner between two adjacent lasing light emitters, and this laser projection angle comprises the scope of (Atant (0.07))/10 to (Atan (0.07)) * 2.
Step S2 can also comprise: step S24, the laser controlling each scanning only export the step of real image on screen for overlapping region.And this image exports rate-determining steps S24 can differently control the effective time corresponding with specific region based on the angle of departure of each lasing light emitter; Can carry out controlling effective time of the laser making to scan on screen the fastest become the slowest, and carry out controlling to make the effective time of the laser of scanning the slowest become the fastest; The size of the image scanned on screen can be controlled based on the angle of departure of each lasing light emitter and effective time; Can control output image with the unit preset of output image, and this unit preset can comprise frame unit.
Of the present utility model metering by metrology devices detection supplies the voltage of module or/and electric current is or/and power; Judge whether voltage or electric current or power exceed setting limit value and exceed setting limit value duration by processor; If voltage or electric current or power exceed setting alarm limits and reaches setting duration or exceed setting duration, by communication module, warning message is sent to server or user terminal; If voltage or electric current or power exceed setting power-off limit value, power-supply controller of electric cuts off breaker device according to the instruction of processor.Setting limit value comprises higher limit and lower limit, when voltage is higher than higher limit or lower than lower limit, communication module is all likely made to send warning information or/and cut off the power supply of power supply output terminal by power-supply controller of electric to server or user terminal, in embody rule, if voltage deviation arm's length standard voltage is few, communication module can to server or user terminal timed sending warning information, send warning information and can pass through mail or note etc., user terminal can be mobile phone etc., user's equipment of knowing clearly is made to be at improper operating at voltages, user can determine whether close power supply according to actual conditions, or user also can send cut-offing instruction by server or user terminal, after communication module receives cut-offing instruction, power-supply controller of electric just can according to the power supply of cut-offing instruction cut-out to equipment, after cutting off power supply, the instruction of all right resetting starting of user, after communication module receives start-up command, power-supply controller of electric just can restore electricity according to start-up command, uses very convenient.If voltage deviation arm's length standard is too much, equipment works at this voltage and can produce larger infringement or easily cause security incident, now power-supply controller of electric directly can cut off power supply, simultaneously, power-off cause information is sent to user by communication module, avoid this device damage and stop potential safety hazard, be beneficial to the serviceable life of extension device, product reliability is high.After user receives power-off cause information, can reply the instruction of starting shooting by force, communication module receives by force after start-up command, and power-supply controller of electric just can restore electricity according to start-up command by force, uses very convenient.
Those of ordinary skill in the art will appreciate that, embodiment described here is to help reader understanding's principle of the present utility model, should be understood to that protection domain of the present utility model is not limited to so special statement and embodiment.Those of ordinary skill in the art can make various other various concrete distortion and combination of not departing from the utility model essence according to these technology enlightenment disclosed in the utility model, and these distortion and combination are still in protection domain of the present utility model.
Claims (8)
1. a laser-projector, is characterized in that, comprises
Multiple lasing light emitter, for Emission Lasers bundle;
Master controller, on the specific region controlling directly to be incident on screen, the angle of departure of the laser that each lasing light emitter and each lasing light emitter generate is poor with generation time;
Scanner, for scanning each laser on screen, the laser that wherein main controller controls respectively scans only exports real image for the overlapping region on described screen;
Communication module, for data message is sent to server or user terminal and be used for reception server or user terminal send instruction;
Power-supply system, for providing power supply for all the other equipment of projector inside, power-supply system comprises
Mains electricity input end, connects civil power;
Power switch button, for the power switch of Non-follow control power-supply system;
Metrology devices, for detecting the voltage of supply module output or/and electric current is or/and power;
Processor, for judging whether the voltage of supply module or electric current or power exceed setting limit value and exceed setting limit value duration;
Power-supply controller of electric, opens and closes for controlling supply module according to the signal of processor signal or communication module;
Multiple supply module is all the other module for power supply in projector;
Switching Power Supply, the alternating current for being inputted by civil power is transformed into low voltage and direct current and provides power supply for internal circuitry;
The alternating current that mains electricity input end exports is connected supply module by after power switch button and metrology devices successively, and supply module connects lasing light emitter, master controller and scanner respectively; The output of metrology devices is connected with processor, and processor is connected with communication module with power-supply controller of electric respectively.
2. a kind of laser-projector according to claim 1, is characterized in that, described laser-projector also comprises
Drive singal maker, for the laser driver in driving laser source and the scanner driver of driving scanner;
Laser driver, for the laser drive signal driving laser source generated based on drive singal maker;
Scanner driver, drives scanner for the scanner drive signal generated based on drive singal maker;
The input end of drive singal maker is connected with master controller, and the output terminal of drive singal maker is connected with laser driver and scanner driver respectively, and the output terminal of laser driver is connected with lasing light emitter, and the output terminal of scanner driver connects scanner.
3. a kind of laser-projector according to claim 2, is characterized in that, described laser-projector also comprises
Location of pixels detecting device, for detecting the current pixel position expecting the image be presented on screen;
Offset determiner, for determining the brightness offset value corresponding with detected pixel;
Compensating unit, the compensating signal for compensating the laser drive signal corresponding with detected pixel is generated, little by little to increase towards away from the direction of at least one benchmark pixel preset in each horizontal line of single frames whole pixels accordingly or to reduce brightness offset value based on determined brightness offset value;
The input end of location of pixels detecting device is connected with drive singal maker, and the output terminal of location of pixels detecting device connects offset determiner and compensating unit successively, and the output terminal of compensating unit is connected with drive singal maker.
4. a kind of laser-projector according to claim 1, is characterized in that, be provided with an overload protecting circuit between described mains electricity input end and power switch button, overload protecting circuit is connected with processor.
5. a kind of laser-projector according to claim 1, it is characterized in that, described supply module comprises breaker device and power supply output terminal, the control input end of breaker device is connected with power-supply controller of electric, the alternating current input end of breaker device is connected with the output terminal of metrology devices, the ac output end of breaker device connects power supply output terminal, and the signal input part of metrology devices is connected with power supply deferent segment.
6. a kind of laser-projector according to claim 5, is characterized in that, described breaker device comprises thyristor or relay.
7. a kind of laser-projector according to claim 1, is characterized in that, described power switch button marine site Switching Power Supply is connected, and described Switching Power Supply adopts AC-DC Switching Power Supply, alternating current 220V is changed into 5V, for system provides power supply.
8. a kind of laser-projector according to claim 1, it is characterized in that, described communication module comprises wire communication or/and wireless communication module, wire communication module comprises one or both the combination in RS485 communication module or RS232 communication module, and wireless communication module comprises the combination of one or more in ZigBee communication module, WiFi communication module, infrared communication module or RFID communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520724253.3U CN204925599U (en) | 2015-09-18 | 2015-09-18 | Laser projection appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520724253.3U CN204925599U (en) | 2015-09-18 | 2015-09-18 | Laser projection appearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204925599U true CN204925599U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520724253.3U Expired - Fee Related CN204925599U (en) | 2015-09-18 | 2015-09-18 | Laser projection appearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204925599U (en) |
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2015
- 2015-09-18 CN CN201520724253.3U patent/CN204925599U/en not_active Expired - Fee Related
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Effective date of registration: 20160425 Address after: High tech Zone Tianhua road Chengdu City, Sichuan province 610041 No. 299 British county one Patentee after: Sichuan chart Electronic Technology Co., Ltd. Address before: 611731 Sichuan city of Chengdu province high tech Zone (West) Kexinlu No. 6 Patentee before: CHENGDU HONGSHENG PHOTOELECTRIC SCIENCE & TECHNOLOGY CO., LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20180918 |
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| CF01 | Termination of patent right due to non-payment of annual fee |