CN206442567U - A kind of light-source brightness control system, light-source system and projector equipment - Google Patents
A kind of light-source brightness control system, light-source system and projector equipment Download PDFInfo
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- CN206442567U CN206442567U CN201621357798.6U CN201621357798U CN206442567U CN 206442567 U CN206442567 U CN 206442567U CN 201621357798 U CN201621357798 U CN 201621357798U CN 206442567 U CN206442567 U CN 206442567U
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- 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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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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
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a kind of light-source brightness control system, light-source system and projector equipment, light-source brightness control system is in light-source system and projector equipment, and light-source brightness control system includes environment optical detecting unit, main control unit, the driver element being sequentially connected.Environment optical detecting unit detects ambient light, and ambient light signal is sent into main control unit, and ambient light signal is data signal；Main control unit generates analog voltage control signal according to ambient light signal and exported to driver element；Driver element drives light source cell to light according to analog voltage control signal.The utility model automatically adjusts the luminance of light-source system according to the change of ambient light, so as to reasonable employment electric power energy, has responded the call of national energy-saving emission reduction, significant with extraordinary practical value.
Description
Technical field
The application is related to optical technical field, and in particular to a kind of light-source brightness control system, light-source system and projection are set
It is standby.
Background technology
The world today, the pollution of environment, the in short supply of the energy have waken up the energy-saving and emission-reduction consciousness of the people of other countries, bear
Environmental protection, the laser of energy-saving and emission-reduction mission are gradually by social recognition and receiving.People pass through various approach and seek new section
Energy mode, as the manufacturing cost of the product of application laser is more and more lower, more areas begin to use laser, compared to traditional light
Source, laser intensity bigger, light beam is more concentrated, and light source is with the obvious advantage, but there is serious energy waste in use
Phenomenon.In optical technical field, by taking existing projector as an example, light-source brightness pattern is fixed, even in night or light compared with
High brightness state is also remain under dark environment, LASER Light Source is not only, even ordinary light source will also result in the serious of electric energy
Waste.
Utility model content
In optical technical field, especially for projector equipment, in order to enable a device to change according to the light and shade of ambient light
And change the luminous intensity of its light source, reduce luminous intensity when ambient light dies down, so that reasonable employment electric power energy, responds state
The call of family's energy-saving and emission-reduction,
The utility model proposes a kind of light-source brightness control system, it include environment optical detecting unit, main control unit and
Driver element；The environment optical detecting unit is communicated to connect with the main control unit, and the main control unit is connected to the driving
Unit.The environment optical detecting unit detects ambient light, and ambient light signal is sent into the main control unit, the ambient light
Signal is data signal；The main control unit receives the ambient light signal, by the ambient light signal value and default ambient light
Signal threshold value is compared, and generates analog voltage control signal according to the result of the comparison and export single to the driving
Member；The driver element drives light source cell to light according to the analog voltage control signal.
According to second aspect of the present utility model there is provided a kind of light-source system, it includes above-mentioned light-source brightness control system
With connected light source cell.
According to the third aspect of the present utility model there is provided a kind of projector equipment, it includes above-mentioned light-source system.
The utility model can automatically adjust the luminance of light-source system according to the change of ambient light, for example, adjust light source
The unlatching of system, and the luminous bright-dark degree of light-source system is adjusted, so as to reasonable employment electric power energy, respond country
The call of energy-saving and emission-reduction is significant with extraordinary practical value.
Brief description of the drawings
Fig. 1 is the structural representation of the light-source system of the utility model embodiment one；
Fig. 2 is the environment optical detecting unit structural representation of the light-source system of the utility model embodiment one；
Fig. 3 is the main control unit structural representation of the light-source system of the utility model embodiment one；
Fig. 4 is the structure of driving unit schematic diagram of the light-source system of the utility model embodiment one；
Fig. 5 is the drive module and light source cell structural representation of the light-source system of the utility model embodiment one；
Fig. 6 is the I of the light-source system of the utility model embodiment oneCSHElectric current and ILEDThe corresponding relation figure of electric current；
Fig. 7 is the integrated control time and detection illumination corresponding relation figure of the light-source system of the utility model embodiment one；
Fig. 8 is that the fluorescent lamp of the light-source system of the utility model embodiment one and the illumination of incandescent lamp detect single with ambient light
The corresponding relation figure for the counting that member is produced.
Embodiment
The application is described in further detail below by embodiment combination accompanying drawing.
Embodiment one：
As shown in figure 1, the light-source system of the present embodiment includes being sequentially connected environment optical detecting unit 10, the main control unit connect
20th, driver element 30 and light source cell 50.Wherein, environment optical detecting unit 10 and main control unit 20 are logical by IIC communications protocol
Letter connection.
The light source cell 50 of the present embodiment is laser, LED, laser array, LED array or laser and LED combination
Any of array.
The environment optical detecting unit 10, main control unit 20, driver element 30 and light source cell 50 operation principle substantially
It is as follows：
The environment optical detecting unit 10 detects ambient light, and ambient light signal value is sent into the main control unit, institute
It is data signal to state ambient light signal value.
The main control unit 20 receives the ambient light signal value, by the ambient light signal value and default ambient light signal
Threshold value is compared, and generates analog voltage control signal according to the result of the comparison and export to the driver element.
The driver element 30 is connected with light source cell 50, and light source cell 50 is driven according to the analog voltage control signal
It is luminous.
Wherein, the main control unit 20, as shown in figure 3, including main control chip 201, microprocessor 202, main control register
203rd, digital analog converter 204.Wherein, the input of the main control chip 201 is communicated to connect with environment optical detecting unit 10；
Main control chip 201 is also connected with main control register 203 and microprocessor 202 respectively；Microprocessor 202 is additionally coupled to master control and posted
Storage 203 and digital analog converter 204；The output end of digital analog converter 204 is connected to driver element 30.The master control
The operation principle of unit 20 approximately as：
The main control chip 201 reads the ambient light signal value of the environment optical detecting unit 10 and is stored in the master control
203 in register；
The microprocessor 202 is connected to the main control register 203 and the digital analog converter 204, described micro-
The ambient light signal value is compared processor 202 with the default ambient light signal threshold value,
When the ambient light signal value is less than the default ambient light signal bottom threshold, generation reduces driving voltage
To the analog voltage control signal of the first driving voltage, and by the digital analog converter by first driving voltage
Analog voltage control signal is exported to the driver element；
When the ambient light signal value is in the default ambient light signal threshold range, generation maintains current driving
The analog voltage control signal of voltage, and by the digital analog converter by the analog voltage control of the present drive voltage
Signal output processed is to the driver element；
When the ambient light signal value is more than the default ambient light signal upper threshold, generation raises driving voltage
To the voltage control signal of the second driving voltage, and by the digital analog converter by the simulation of second driving voltage
Voltage control signal is exported to the driver element.
Specifically, if the lower limit of default ambient light signal threshold value is L1, the upper limit is L2, wherein L1<L2.And ambient light is examined
The ambient light signal value that survey unit 10 is detected is L0, when the ambient light signal value L0 is less than the default ambient light signal threshold
When being worth lower limit, namely L0<During L1, the main control unit 20 generates the simulation electricity that driving voltage is reduced to the first driving voltage V1
Press control signal, wherein V1<V0, wherein V0 are present drive voltage.When the ambient light signal value L0 is in the default ring
During the optical signal threshold value scope of border, namely during L1≤L0≤L2, generation maintains present drive voltage V0 analog voltage control signal.
When the ambient light signal L0, which is more than, to be worth in the default ambient light signal threshold value, namely L0>During L2, generation will
Driving voltage is increased to the second driving voltage V2 analog voltage control signal, wherein V2>V0.
In other embodiments, for the precision of the light modulation that further optimizes light-source system, L0 is worked as<, can will be small during L1
It is divided into several regions in the scope of the default ambient light signal bottom threshold L1, the main control unit 20 is directed to each region
Generate corresponding analog voltage control signal.Similarly, L0 is worked as>, can also be by mansion in the default ambient light signal threshold during L2
Value upper limit L2 scope is divided into several regions, and the main control unit 20 is for the corresponding analog voltage control of each Area generation
Signal.
As shown in Fig. 2 environment optical detecting unit 10, which includes photodiode 101, electric current, turns frequency circuit 102, counter
103rd, ADC (Analog-to-Digital Converter, analog/digital converter) register 104, IIC (Inter-
Integrated Circuit, IC bus) register 105, integrated time controller 106；Electric current turns frequency circuit 102
Using the existing I bought2F circuit.Wherein, photodiode 101 is connected to electric current and turns frequency circuit 102；Electric current turns frequency electricity
Road 102 is connected to counter 103；Counter 103 is respectively connecting to ADC registers 104, IIC registers 105 and the control of integrated time
Device 106 processed；IIC registers 105 are additionally coupled to ADC registers 104 and integrated time controller 106；And IIC registers 105 are logical
Cross the main control chip that IIC communications protocol is communicatively connected to main control unit 20.Outside main equipment can be by iic bus from light source system
System reads corresponding data to know current environment light situation.Photodiode 101 can do specially treated to filter infrared
Spectrum, only detects the spectral region of human eye sensitivity.
As shown in figure 3, main control unit 20 includes main control chip 201, microprocessor 202, main control register 203, digital mould
Intend converter 204.Wherein, the input of main control chip 201 is communicated to connect with environment optical detecting unit 10；Main control chip 201 is also
It is connected respectively with main control register 203 and microprocessor 202；Microprocessor 202 is additionally coupled to main control register 203 and numeral
Analog converter 204；The output end of digital analog converter 204 is connected to driver element 30.
Driver element 30 includes simulation light-adjusting module and drive module 303；Simulation light-adjusting module is connected to main control unit 20
With drive module 303, drive module 303 is connected to light source cell 50.
As shown in figure 4, simulation light-adjusting module includes operational amplification circuit 301 and analog light-adjusting circuit 302.
Operational amplification circuit 301 includes operational amplifier, the resistance R1 of amplifier one and the resistance R2 of amplifier two.Wherein, computing is put
The electrode input end of big device is connected with digital analog converter 204, and its negative input is connected to the first of the resistance R1 of amplifier one
End and the resistance R2 of amplifier two first end, its output end are connected to the resistance R2 of amplifier two the second end and first resistor R1out, transport
Put the second end ground connection of a resistance R1.
Analog light-adjusting circuit 302 includes first resistor R1out, second resistance R2out, 3rd resistor Rbias, the 4th resistance
Rcsh, the 6th triode Q6, the 7th triode Q7, the 8th triode Q8.7th triode Q7 base stage is connected to the eight or three pole
The colelctor electrode of pipe Q8 base stage and the 6th transistor O6, its emitter stage is connected to the VCC poles of drive module 303, and its colelctor electrode connects
To the 6th triode Q6 colelctor electrode；8th triode Q8 emitter stage is connected to the VCC poles of drive module 303, its colelctor electrode
It is connected to the CSH poles of drive module 303；6th triode Q6 base stage is connected to first resistor R1out first end and second
Resistance R2out first end, its emitter stage is connected to 3rd resistor Rbias first end；First resistor R1out the second end connects
It is connected to the output end of operational amplifier；Second resistance R2out and 3rd resistor Rbias the second end ground connection；4th resistance Rcsh
First end be connected to the CSH poles of drive module 303, its second end ground connection.
As shown in figure 5, drive module 303 uses LM3421/23 drivers, those skilled in the art can also use
LM3424/29 drivers etc..The CSH ends of drive module 303 are connected to analog light-adjusting circuit 302, and its COMP end passes through electric capacity
CCMP is grounded, and its HSP end and HSN ends pass through resistance R respectivelyHSPWith resistance RHSNIt is connected to light source cell 50.
The principle that the light-source system control of the present embodiment described briefly below lights：
The environment optical detecting unit 10 detects ambient light, and ambient light signal value is sent into the main control unit, institute
It is data signal to state ambient light signal value.Detailed process is：When the extraneous ambient light of light-source system changes, the pole of photoelectricity two
Pipe 101 can produce the photoelectric current of reaction environment optical information with the change of induced environment light, and electric current turns frequency circuit 102 by light
Electric current is converted to corresponding frequencies in proportion, and frequency conversion is correspondence analog quantity by counter 103, and ADC registers 104 are to analog quantity
Sampling is carried out analog quantity is quantified as into the ambient light signal value of digital quantity (IIC data) and IIC registers 105 are deposited at；
Integrated time controller 106 is used for the illumination range for limiting the ambient light that can be sensed in certain time.
The main control unit 20 receives the ambient light signal value, by the ambient light signal value and default ambient light signal
Threshold value is compared, and generates analog voltage control signal according to the result of the comparison and export to the driver element.Tool
Body process is：Main control chip 201 reads environment optical signal value from IIC registers 105 and is stored in 203 in main control register, micro-
Processor 202 is contrasted ambient light signal value with default ambient light signal threshold value, and corresponding two are exported according to comparing result
Binary data is converted into analog voltage control letter by binary data to digital analog converter 204, digital analog converter 204
Number and export to driver element 30 operational amplifier electrode input end.
The driver element 30 is connected with light source cell 50, and light source cell 50 is driven according to the analog voltage control signal
It is luminous.Detailed process is：Operational amplification circuit 301 is amplified to handle and export to simulation to analog voltage control signal and dimmed
Circuit 302, analog light-adjusting circuit 302 exports corresponding I according to the analog voltage control signal Vout after amplificationCSHElectric current extremely drives
Dynamic model block 303.Specifically, the change of the analog voltage control signal Vout after amplification can cause the base for flowing into the 6th triode Q6
Level curent change, it can be seen from dynatron performance, the change of base current can be caused transistor collector electricity by certain ratio
The change of stream, the 6th triode Q6 colelctor electrodes connect the 8th triode Q8 base stage, the change of the 6th triode Q6 collector currents
Change can cause the change of the 8th triode Q8 base currents, it can be seen from dynatron performance, the 8th triode Q8 base currents
Change can be caused the change of the 8th triode Q8 collector currents by certain ratio, so as to cause to flow through on the 4th resistance Rcsh
Curent change, so as to cause the change of Icsh electric currents, understood according to formula (2), ICSHChange can cause ILEDChange, from
And realize the change of laser brightness.
Wherein, different ICSHThe different I of electric current correspondenceLEDElectric current, ICSHElectric current and ILEDThe corresponding relation curve of electric current is such as
Shown in Fig. 6, the I of light source cell is flowed throughLEDElectric current is bigger, and light source cell is luminous brighter.ICSHElectric current and ILEDThe operation relation of electric current
Also it can be derived by below equation (1) and formula (2).
Wherein, ICSHFor state current, ILEDFor the luminous operating current of driving LED, IADDFor intermediate variable, RHSPWith
RSNSResistance R in respectively Fig. 5HSPWith resistance RSNSResistance value, R1out, R2out, RBIASFirst resistor, in respectively Fig. 4
The resistance value of two resistance and 3rd resistor, VOUTIt is defeated after being amplified for operational amplification circuit 301 to analog voltage control signal
Go out value, VBE-Q6When representing the 6th triode Q6 conductings, the pressure drop between its ground level and emitter stage.
Drive module 303 receives the I from analog light-adjusting circuit 302CSHElectric current and according to ICSHElectric current obtains corresponding ILED
Electric current, and with ILEDElectric current driving light source cell 50 lights so that luminous intensity/brightness of light source cell 50 is with the bright of ambient light
Secretly change and be conditioned.For example when surrounding environment becomes brighter, light-source system control light emitting module 50 is sent with bigger light intensity
Laser；When surrounding environment is dimmed, light-source system luminescent decay even stops luminous.
Integrated control time and the corresponding relation of detection illumination range in the present embodiment are illustrated in figure 7, for example, when integrated
When control time is set to 100ms, detectable illumination range is 44200lus, and precision is 1.35lus/count, meets application
Demand.
Fig. 8 has been reacted under conditions of counter sets the time of integration as 100ms, and fluorescent lamp (solid line) and incandescent lamp are (empty
Line) illumination and environment optical detecting unit (due to illumination) produce count numbers (counting) corresponding relation, can be used as technology people
The design reference of member.
Light-source system of the present utility model also can be applicable in any projector equipment or laser television as light source
Part.
In the prior art, technical staff can set the gear of several luminances to light source, manually in real time
Luminance is adjusted, but not only consumes manpower on foot like that, and is difficult to the luminance that accurate selection is most suitable for current environment, is caused
The serious waste of time, the energy and manpower, add the use difficulty of user.The utility model can be according to the change of ambient light
The luminance of light-source system is automatically adjusted, for example, adjusts whether light-source system is opened, and adjusts the luminous bright of light-source system
Dark degree, so as to reasonable employment electric power energy, has responded the call of national energy-saving emission reduction, with extraordinary practical valency
Value is significant.
Above content is to combine the further description that specific embodiment is made to the application, it is impossible to assert this Shen
Specific implementation please is confined to these explanations.For person of an ordinary skill in the technical field, this Shen is not being departed from
On the premise of design please, some simple deduction or replace can also be made.
Claims (10)
1. a kind of light-source brightness control system, it is characterised in that including environment optical detecting unit, main control unit and driver element；
The environment optical detecting unit is communicated to connect with the main control unit, and the main control unit is connected to the driver element；
The environment optical detecting unit detects ambient light, and ambient light signal is sent into the main control unit, the ambient light
Signal is data signal；
The main control unit receives the ambient light signal, and analog voltage control signal is generated and defeated according to the ambient light signal
Go out to the driver element；
The driver element is connected with light source cell, drives light source cell to light according to the analog voltage control signal.
2. the system as claimed in claim 1, it is characterised in that
The environment optical detecting unit includes light-sensitive element, electric current and turns frequency circuit, counter, ADC registers, IIC registers；
The light-sensitive element is connected to the electric current and turns frequency circuit, by the change of induced environment light to produce photoelectric current, and
The photoelectric current is exported to the electric current and turns frequency circuit；
The electric current turns frequency circuit and is connected to the counter, and the photoelectric current is converted into corresponding frequencies, and frequency is defeated
Go out to the counter；
The counter is connected to the ADC registers, is correspondence analog quantity by frequency conversion, and by analog output to ADC
Register；
The ADC registers are connected to the IIC registers, sampling are carried out to analog quantity analog quantity is quantified as into digital quantity
Ambient light signal and be deposited at the IIC registers；
The IIC registers are communicated to connect with the main control unit by IIC communications protocol.
3. system as claimed in claim 2, it is characterised in that
The environment optical detecting unit also includes integrated time controller, the integrated time controller and the counter and institute
State IIC registers to be connected, the illumination range for limiting the ambient light that the light-sensitive element can sense within a certain period of time.
4. the system as claimed in claim 1, it is characterised in that
The main control unit includes main control chip, main control register, microprocessor and digital analog converter；
The input of the main control chip and the environment optical detecting unit are communicated to connect, the main control chip also respectively with it is described
Main control register is connected with the microprocessor, and the main control chip reads the ambient light signal of the environment optical detecting unit
And be stored in the main control register；
The microprocessor is additionally coupled to the main control register and the digital analog converter, and the microprocessor is according to ring
Border optical signal exports corresponding binary data to the digital analog converter；
The output end of the digital analog converter is connected to the driver element, and the digital analog converter is by binary number
According to being converted into analog voltage control signal and export to the driver element.
5. the system as claimed in claim 1, it is characterised in that the driver element includes simulation light-adjusting module and driving mould
Block；
The simulation light-adjusting module is connected to the main control unit and the drive module；
The main control unit exports analog voltage control signal to the simulation light-adjusting module；
The simulation light-adjusting module exports corresponding state current to the drive module according to analog voltage control signal；
The drive module drives light source cell to light according to state current.
6. system as claimed in claim 5, it is characterised in that
The simulation light-adjusting module includes operational amplification circuit and analog light-adjusting circuit；
The analog light-adjusting circuit includes first resistor, second resistance, 3rd resistor, the 4th resistance, the 6th triode, the seven or three
Pole pipe, the 8th triode；
The base stage of 7th triode is connected to the base stage of the 8th triode and the colelctor electrode of the 6th triode, its
Emitter stage is connected to the VCC poles of the drive module, and its colelctor electrode is connected to the colelctor electrode of the 6th triode；
The base stage of 8th triode is connected to the base stage of the 7th triode, and its emitter stage is connected to the drive module
VCC poles, its colelctor electrode is connected to the drive module；
The base stage of 6th triode is connected to the first end of the first resistor and the first end of the second resistance, and it collects
Electrode is connected to the colelctor electrode and base stage of the 7th triode, and its emitter stage is connected to the first end of the 3rd resistor；
The first end of the first resistor is connected to the base stage of the 6th triode, and its second end is connected to the operation amplifier
The output end of circuit；
The first end of the second resistance is connected to the base stage of the 6th triode, its second end ground connection；
The first end of the 3rd resistor is connected to the emitter stage of the 6th triode, its second end ground connection；
The first end of 4th resistance is connected to the drive module, its second end ground connection；
The input and output of the operational amplification circuit are respectively connecting to the main control unit and the first resistor；
The operational amplification circuit to the analog voltage control signal that the main control unit is exported be amplified handle and export to
The analog light-adjusting circuit；
The analog light-adjusting circuit exports corresponding state current to the driving according to the analog voltage control signal after amplification
Module.
7. system as claimed in claim 6, it is characterised in that
The drive module uses LM3421/23 drivers or LM3424/29 drivers；
The CSH ends of the drive module are connected to the analog light-adjusting circuit, and it receives the shape from the analog light-adjusting circuit
State electric current；
The COMP ends of the drive module pass through capacity earth；The HSP ends and HSN ends of the drive module are connected by resistance respectively
It is connected to the light source cell；
The drive module obtains corresponding I according to state currentLEDElectric current, and with ILEDElectric current drives the light source cell hair
Light.
8. a kind of light-source system, it is characterised in that including the light-source brightness control system as described in claim any one of 1-7 and
Light source cell；
The light source cell is connected to the driver element of the light-source brightness control system.
9. light-source system as claimed in claim 8, it is characterised in that
The light source cell is any one of LASER Light Source, LED or binomial combination.
10. a kind of projector equipment, it is characterised in that including light-source system as claimed in claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/088623 WO2018107682A1 (en) | 2016-11-17 | 2017-06-16 | Light source brightness control system, light source system and projection equipment |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621234504 | 2016-11-17 | ||
| CN2016212345040 | 2016-11-17 |
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| Publication Number | Publication Date |
|---|---|
| CN206442567U true CN206442567U (en) | 2017-08-25 |
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|---|---|---|---|
| CN201621357798.6U Active CN206442567U (en) | 2016-11-17 | 2016-12-12 | A kind of light-source brightness control system, light-source system and projector equipment |
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| Country | Link |
|---|---|
| CN (1) | CN206442567U (en) |
| WO (1) | WO2018107682A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110361918A (en) * | 2019-07-09 | 2019-10-22 | 深圳市火乐科技发展有限公司 | A kind of automatic light control system and the projector with it |
| CN110858052A (en) * | 2018-08-23 | 2020-03-03 | 深圳光峰科技股份有限公司 | Projector brightness adjusting system and brightness adjusting method |
| TWI711342B (en) * | 2019-10-23 | 2020-11-21 | 致伸科技股份有限公司 | Intelligent brightness modulating device of lights of gaming input device |
| CN113163539A (en) * | 2021-04-16 | 2021-07-23 | 横店集团得邦照明股份有限公司 | Projection lamp capable of realizing synchronous lighting through light flicker and realization method thereof |
| CN113932919A (en) * | 2021-10-08 | 2022-01-14 | 杭州涂鸦信息技术有限公司 | Ambient light detection circuit, ambient light detection method, computer device, and readable storage medium |
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| CN108933900A (en) * | 2018-09-04 | 2018-12-04 | 深圳市威特迪科技有限公司 | A kind of video camera light filling control circuit and its control method |
| CN113552556A (en) * | 2020-04-23 | 2021-10-26 | 上海禾赛科技有限公司 | Photoelectric detection module for laser radar, laser radar and ambient light detection method |
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| JP5655265B2 (en) * | 2008-11-04 | 2015-01-21 | セイコーエプソン株式会社 | Projector, image quality adjustment method, image quality adjustment program, and recording medium |
| CN201765803U (en) * | 2010-05-20 | 2011-03-16 | 桦晶科技股份有限公司 | Backlight source intensity adjusting structure of electronic device |
| CN102568407B (en) * | 2010-12-28 | 2013-07-17 | 瀚宇彩晶股份有限公司 | Liquid crystal display and driving method thereof |
| CN103148398A (en) * | 2013-04-06 | 2013-06-12 | 湖南科技学院 | Study eye protection table lamp and control method thereof |
| CN103517528A (en) * | 2013-10-11 | 2014-01-15 | 李锡文 | Freestyle group control system and control method based on independently-mounted LED sensing lamps |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110858052A (en) * | 2018-08-23 | 2020-03-03 | 深圳光峰科技股份有限公司 | Projector brightness adjusting system and brightness adjusting method |
| CN110361918A (en) * | 2019-07-09 | 2019-10-22 | 深圳市火乐科技发展有限公司 | A kind of automatic light control system and the projector with it |
| CN110361918B (en) * | 2019-07-09 | 2024-05-28 | 深圳市火乐科技发展有限公司 | Automatic dimming system and projector with same |
| TWI711342B (en) * | 2019-10-23 | 2020-11-21 | 致伸科技股份有限公司 | Intelligent brightness modulating device of lights of gaming input device |
| CN113163539A (en) * | 2021-04-16 | 2021-07-23 | 横店集团得邦照明股份有限公司 | Projection lamp capable of realizing synchronous lighting through light flicker and realization method thereof |
| CN113932919A (en) * | 2021-10-08 | 2022-01-14 | 杭州涂鸦信息技术有限公司 | Ambient light detection circuit, ambient light detection method, computer device, and readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018107682A1 (en) | 2018-06-21 |
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