CN104113953B - Electro-optical device and control method - Google Patents
Electro-optical device and control method Download PDFInfo
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Abstract
The invention relates to an electro-optical device and a control method. The electro-optical device comprise a power supply unit, a spectral signal acquiring unit, a spectrum control unit, a constant-current control unit, a brightness control unit, and a light-emitting unit. The spectral signal acquiring unit and the constant-current control unit are connected with the spectrum control unit. The light-emitting unit is connected with the brightness control unit and the constant-current control unit. Multiple light-emitting devices are controlled by current pulse width and current amplitude. Thus, the spectral components of the electro-optical device are added; stimulation of blue light and strobe on human bodies are reduced; an energy-efficient requirement is satisfied; and the controllability of the electro-optical device is improved. The electro-optical device can be widely used in control of various illumination and light environments.
Description
Technical field
The present invention relates to electrooptical technology, and in particular to the spectrum and control technology of light sources, particularly according to different rings
Border and the hobby of photographed object, adjust luminescent device and send spatial distribution and the brightness of light, be reduced or avoided useless spectrum or
Harmful spectrum produces side effect, Creating Comfort luminous environment, while also reaching the purpose of energy saving, it is adaptable to solid to photographed object
Luminous, the normal lighting of gas luminescence, luminous environment control, animal and plant growth control are illuminated and other special lighting fields.
Background technology
Energy-saving illumination technology light emitting semiconductor device of new generation with LED as representative is increasingly subject to national governments and among the people
Concern.More traditional light source is compared, light emitting semiconductor device can be greatly reduced energy consumption, mercury etc. in traditional energy-saving lamp can be reduced again
The environmental pollution that harmful substance is brought.As implementing for government's items green illumination policy is brought with the perfect of LED industry chain
Cost reduce, LED illumination comes into the paces of general public family and accelerates.But while LED energy-conservations are enjoyed, LED
Some problems that lighting engineering is present also more cause the attention of people, these problems to include control technology institute band in LED illumination
Carry out optical flare, to eyes and the injury of specific crowd generation, blue light is to name draw color for the hidden danger that rich blue light is brought, such as blue light
Destruction and blue light impact that biological clock is brought.If these problems can not be efficiently solved or or even ignored
The presence of these problems, will bring certain impact to promoting the use of for LED this power-saving technology.
Each light source has the relation that there is special spatial distribution, i.e. emission wavelength and luminous intensity.Fig. 1 is arranged simultaneously
Go out current several main artificial light light sources, incandescent lamp, fluorescent lamp, and just initially enter the white light LEDs of lighting field.
The maximum source of natural light is exactly the sun, after atmospheric absorption and the scattering of dust granules, through routine building glass
The spatial distribution of glass is shown in Fig. 1 a.As can be seen that the most important special type of natural light is exactly continuously from the blue light to wavelength to long wavelength
Infrared waves Spectral structure, ultraviolet light equiwavelength is shorter, and energy is higher, and major part is absorbed by atmosphere, especially Jing indoors
After crossing building glass, further absorbed.Through the long-term evolution of human history, the eyes and biological clock of the mankind have all adapted to this
Plant spatial distribution.Incandescent lamp is the electric light source of closest this distribution, such as Fig. 1 b, and its spatial distribution is constantly subjected to the happiness of people
Love, but energy conversion efficiency is relatively low.Although the fluorescent lamp energy-conservation for using in a large number at present is a little, due to containing polluter mercury
People are promoted to seek the luminescence technology progressively replaced, such as LED.Compare the conventional light sources such as incandescent lamp and fluorescent lamp, and LED lights
The characteristics of be that electric energy conversion efficiency is high, the monochromaticjty spectrum that by force i.e. each LED sends is especially narrow.Conventional LED/light source and
So-called white light LEDs are that the blue light that blue led sends excites yellow fluorescence with it by made by blue led is plus yellow fluorescent powder
The gold-tinted sum total white light that i.e. our eyes are seen that powder is sent, its spatial distribution is as illustrated in fig 1d.This LED/light source light
The maximum feature of of Spectral structure is that its high energy blue light component content is high, i.e., rich blue light or referred to as blue light spilling, colour temperature
Higher, color rendering is also bad.The eyeground optic cell of humans and animals can be brought can not for substantial amounts of high energy blue light in illumination
The injury of reparation, can cause the fundus oculi diseases such as glaucoma.If this rich blue light is used for artistic lighting, can also be to the dye in oil painting
Material causes irreversible change, damages famous painting, and the famous museum in Europe has discovered that this injury.In addition, residing for blue light
Optical band be biological clock sensitive band, the sleep cycle of humans and animals, Long-Time Service can be affected to upset biological clock.In order to be able to make
People are safe and reliable just to have to make the relative composition of blue light to reduce relievedly using the LED technology of energy-conservation, improves visible ray long
The component of wavelength period；Simultaneously for the ease of adjusting spectrum, color rendering is improved, should as much as possible cause the light of the artificial light sources such as LED
Close sunshine is composed, comfortableness of the artificial light source to organism is improved, injury risk is reduced.Also have before this many invention work or
Person is artificially to reduce blue color components, reduces energy use efficiency；Or attempt using monochromatic red/green blue LED lamp
To solve this problem.These schemes have greatly improved compared with the spectrum of single white LED, but due to the list of three-primary color LED
One spectrum is all narrow, and the spectrum of synthesis does not still constitute continuous spectrum, and these schemes can not meet lighting and create light
The needs of environment.
The present invention research light emitting semiconductor device light source characteristic on the basis of, with reference to colour temperature color and electron controls technology,
A kind of whole visible ray sections of the adjustable covering of colour temperature and Wavelength distribution of utilization light emitting semiconductor device combination of light sources are invented
Full spectrum electro-optical device and control method.
The content of the invention
It is an object of the invention to provide a kind of electro-optical device so that the luminescent spectrum covering visible light spectrum model of electro-optical device
Enclose, particularly the component of long wavelength light is high with respect to LED white light sources, and the electro-optical device spatial distribution and brightness can
Adjust, spatial distribution is adjusted by the PWM current signals that spectral components signal is controlled, it is seen that the overall brightness of light is by adjusting half
The output current of conductor luminescent device passage controlling, the visible ray all controllable so as to obtain brightness and spectrum.So both can be with
The shortcoming of single light emitting semiconductor device color rendering difference is avoided, the indigo plant of blue light plus fluorescent material semiconductor devices is avoided that again
Light is injured, and can realize full spectrum illumination, luminous environment can be on demand adjusted again, moreover it is possible to reduce the flicker of lighting source.
A kind of electro-optical device of the present invention, including：Power subsystem, spectroscopic acquisition unit, spectrum control unit, constant current
Controller unit, brightness control unit, luminescence unit,
Power supply of the power subsystem for needed for each unit offer work in electro-optical device；
Spectroscopic acquisition unit completes to be grouped spectroscopic acquisition function；
Spectroscopic acquisition unit institute input electrical signal is converted to switch time ratio signal by spectrum control unit；
Constant-current control unit is the switch time ratio signal for receiving spectrum control unit, is set by current sense, benchmark
Determine, compare, amplifying the output for realizing stable and constant current；
Brightness control unit is to adjust constant-current control unit output current amplitude size, receives the letter from other sensors
Number, to realize that many condition of electro-optical device is controlled；
Luminescence unit is the device that more than one can light after electrical signals are added；
Wherein spectroscopic acquisition unit is connected with spectrum control unit, constant-current control unit and spectrum control unit phase
Connection, luminescence unit is connected respectively with brightness control unit and constant-current control unit.
Wherein, the luminescence unit includes at least white luminous device and all the way single color light emitting devices all the way, the white
The spectral wavelength ranges of luminescent device are wider than the spectral wavelength ranges of monochromatic luminescence unit, and the luminous intensity of white luminous device is less than
Single color light emitting devices.The white luminous device has relatively wide spatial distribution, but in some spectral wavelength ranges, its intensity
Relatively low, single color light emitting devices can supplement this partial intensities.
Wherein, if the spectroscopic acquisition unit is made up of main line signal picker, per the switch of road signal picker
Time scale signal Zhi Youge roads luminescent device spectrum determines that the signal picker is gathered to the Relative Contribution for exporting total spectrum
Control signal with wireless or wired mode complete transmission.
Wherein, the sensor includes apart from proximity transducer, touch sensing, infrared sensor, motion sensor or
Sonic sensor.
Wherein, it is described apart from proximity transducer, touch sensing, infrared sensor, motion sensor or sonic sensor
Signal with wireless or wired mode complete transmission.
A kind of electric light control method of the present invention, there is following steps：
The spectral signal from electro-optical device each group luminescence unit is gathered first, and required target optical spectrum is decomposed in groups
Spectral sends the contribution number of spectrum to single unit system, and subsequent cell is passed in a wired or wireless manner, control is each
The on-off time ratio within the unit interval of group luminescence unit, so that it is determined that electro-optical device output spectrum feature；Then by bright
The brightness control signal of degree control unit adjusts the intensity of light output, final to realize thering is some strength for meeting user's needs
Spectrum is exported.
The electro-optical device and control method of the present invention has the following advantages：
1) using the spectral combination of different luminescence units, realize that visible ray composes illumination entirely, reduce and pre- anti-blue light is to being shone
The injury of thing.
2) electric light control signal is divided into into spectral signal and brightness control signal, luminescent spectrum and spectral luminance factor can be realized
While adjust.This control method is reduced compared to the common regulation for being realized colour temperature and brightness by pwm signal merely
The flicker of luminescence unit and spectral shift.
3) being also an option that property of electro-optical device of the invention adds different sensors, perceive photographed object presence or absence and
The demand in photographed object focus ring border, improves device work efficiency.
4) electrooptical device simple structure of the invention, flexible configuration, wide accommodation.The electrooptical device of the present invention both can be with
For the illumination of small area list lamp, it is also possible to for the conventional illumination such as large area office, factory, street lamp, public place, can also expire
The special luminous environment demands such as sufficient color atmosphere decoration.
Description of the drawings
Fig. 1 a：The spectral intensity distribution map of natural light
Fig. 1 b：The spectral intensity distribution map of incandescent lamp
Fig. 1 c：The spectral intensity distribution map of fluorescent lamp
Fig. 1 d：The spectral intensity distribution map of white light LEDs
Fig. 2：Full spectrum electro-optical device block diagram of the invention
Fig. 3：The schematic diagram of the embodiment of the present invention one；
Fig. 4：The schematic diagram of the embodiment of the present invention two.
Symbol description in figure：1 power subsystem；2 spectroscopic acquisition units；3 spectrum control units；4 constant-current control units；
5 brightness control units；6 luminescence units；7 intensity control signals；8 wireless signal sending modules；9 reception of wireless signals module；11
Power subsystem one；12 power subsystems two；21 first via spectroscopic acquisition units；22 second road spectroscopic acquisition units；23
3rd road spectroscopic acquisition unit；24 the 4th road spectroscopic acquisition units；31 3 road spectrum control units；32 4 road spectrum
Control unit；41 3 tunnel constant-current control units；42 4 tunnel constant-current control units；61 first groups of luminescence units；62 second groups light
Unit；63 the 3rd groups of luminescence units.
Specific embodiment
Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
See Fig. 1, a kind of electro-optical device of the present invention, by power subsystem, spectroscopic acquisition unit, spectrum control unit,
Constant-current controller unit, brightness control unit, luminescence unit composition,
Wherein spectroscopic acquisition unit is connected with spectrum control unit, constant-current control unit and spectrum control unit phase
Connection, luminescent device unit is connected respectively with brightness control unit and constant-current control unit；
Exchange and/or direct current of the power subsystem for needed for each unit offer work in electro-optical device.It includes AC power supplies,
D/C power, the various linear power supplies and Switching Power Supply designed by AC/DC, DC/DC, also including inductance, electric capacity, the energy storage such as battery unit
Part.
Spectroscopic acquisition unit is that required target optical spectrum is resolved into into component spectra to send light to single unit system
The contribution number of spectrum, passes in a wired or wireless manner subsequent cell.The spatial distribution that each light-emitting component is sent
May pass through experiment to determine and demarcate, through calculating or actual synthesis simulation, the target optical spectrum of setting is decomposed into into group
Into device each group luminescence unit corresponding to percent composition, and this mapping relations are solidificated on device, in order to make
User calls.It includes data acquisition unit, and the position sensing being such as integrated on electro-optical device is either tactiosensible or photaesthesia
The device such as resistance, electric capacity, inductance, photosensitive or sensor or touch spectral catalogue or color meter, continuously smooth ground is adjusted
Electro-optical device sends the colour temperature or synthetic spectrum of spectrum, it is also possible to by button switch directly select store setting colour temperature or
Spectrum is realized corresponding to each luminescence unit intensity information.The signal gathering unit can also directly be set by using person
Method realize, each earth complex luminescent component and its control device, position sensor described above are at this moment identified with data acquisition unit
Part, adjusts Sensitive Apparatus output value of electrical signals size, directly exports associated electrical signals as the contribution point for determining each earth complex luminescent component
Number, user determines final output spectrum according to device output spectrum effect and need for autogenic.
The effect of spectrum control unit is to process spectroscopic acquisition unit institute input electrical signal, to decide whether to load certain
One channel light-emitting element power supply, and the switch time ratio of the road light-emitting component power on signal is carried in, so as to needed for ensureing
The realization of spectrum.Spectrum control unit is mainly through but not limited to PWM (pulse width modulation, Pulse-Width-
Modulation) signal is completing.The unit built-in oscillator and PWM controller.
Constant-current control unit is to realize the output of stable and constant current, to guarantee the normal work of luminescent device.It is permanent
Flow control unit has multiple-channel output according to the quantity of luminescence unit, and such as white semiconductor luminescent device is monochromatic plus ruddiness and gold-tinted
Light emitting semiconductor device is combined, and constant current output is just arranged to triple channel output.Each light-emitting component is led to by a current constant control
Road is controlled, and with the rated operational current of light-emitting component as the upper limit, the size of current value is determined each passage maximum output current value
The luminosity of electro-optical device.The constant-current control unit functional realiey perseverance such as set, compares, amplifying by current sense, benchmark
Flow control.
The effect of brightness control unit is the size for adjusting constant current unit output current.Generally each light-emitting component is in specified work
Make the high-high brightness that the brightness under electric current is the electro-optical device, according to luminous environment and the difference of personal like, its brightness can lead to
Cross brightness control unit to adjust on demand.The brightness control unit can be single electronic device, such as pass through manual adjustment button
To meet impression demand of the photographed object to different brightness；Can also be combination of devices, as by coupling photoelectric sensing apparatus institute
Obtain the electric signal of luminous environment and automatically adjust.Brightness control unit can be made into the logic controller of a complexity, with wired
Or coherent signal is wirelessly obtained, with the electricity for deciding whether to open light-source brightness control unit and be carried on luminescence unit
Stream.The brightness control unit can with coupling distance proximity transducer, touch sensing, infrared sensor, or motion sensor,
The signal that sonic sensor comes, to judge that photographed object whether there is, if photographed object is not present, is just not turned on luminescence unit, this
Sample can make the inspiration light unit work more energy-conservation.
Luminescence unit be plus electrical signals after can send the device of light, such as LED, OLED, fluorescent lamp, various Gas lamps
Present with the loading thereon size of electric signal and regularly change Deng, its luminous intensity.Here luminescence unit is by least
One wide range luminescent device, usually white luminous device, such as a ultraviolet LED white light source with fluorescent material or band fluorescent material
Blue-ray LED, and at least monochromatic LED light source all the way, such as green light LED, red-light LED, yellow light LED to supplement long wavelength light component,
To make up wide spectrum luminescent device long wavelength light component.According to the difference of use environment, these different luminescent device wavelength can be with
There are different combinations, be such as used for agricultural or environment light modulation, can be wide wavelength device, add each monochromatic light of red, green, blue and send out
The combination of optical device, to meet the requirement of different luminous environments.
By apparatus above description as can be seen that apparatus of the present invention control method is will to export some strength spectral resolution for light
Spectrum control signal and brightness control signal.Its step is converted into pwm signal first to gather each road luminescent device spectral signal, controls
The on-off time ratio within the unit interval of each component luminescent device processed, so that it is determined that each component luminescent device spectrum is sent out whole
The contribution fraction of light unit integrated spectral, so as to also determine that electro-optical device output spectrum feature；Then believed by brilliance control
The intensity of light output number is adjusted, it is final to realize that there is some strength spectrum for meeting user's needs to export.The method of the present invention,
Compared to it is common merely colour temperature and brightness are realized by pwm signal while adjust, luminescence unit can be reduced in low-light level
When flicker.The brightness of generally LED is realized by pwm signal, when in low-light level, if not adjusting constant current output
Amplitude, i.e. LED are still operated under rated current, reduce LED switch frequency, and at this time LED fluorescent lifetimes will be when whole
Between in the cycle, take the ratio of very little, if this light period is close to the persistence of vision time of human eye, human eye not only will
Perceive brightness flicker, it is also possible to because each wavelength light emitting devices within the same time the huge difference of working time and cause
Time-division causes aberration.Adjust the order of magnitude of constant current output simultaneously, LED just without being operated in rated current under, but work
Under the setting electric current less than rated current；It is equivalent to improve the switching frequency of current constant control output, drop in low-light level
The low perceived flicker of human eye.
Each unit number of packages amount in the device of the present invention carries out as needed flexible configuration.Colour temperature control is for example only realized,
Without controlling brightness change, can be integrated with brightness control unit by constant-current control unit.Large area is completed for another example
Illumination and luminous environment control, can increase the quantity of luminescence unit, to reach the demand in photographed object focus ring border.Use for convenience
Person, spectroscopic acquisition unit can make standalone module, or do interface with software, and individually power, and control signal can be adopted
Subsequent cell is sent to wired or wireless mode.
Embodiment one
Fig. 3 is as the complete of luminescence unit using white light LEDs and monochromatic three groups of luminescent devices of yellow light LED and red-light LED
Spectrum illumination implementation.Three groups of spectroscopic acquisition units gather three groups of spectral components data, correspondence white light LEDs, yellow light LED,
The percentage of red-light LED each luminescent device.Using in the form of the spectral catalogue figure demarcated, it is beneficial to user and intuitively feels
The colour temperature or color atmosphere of required regulation are felt, with reference to the spectrum for touching or close controller collection user selects
Or the data signal of colour temperature, it is converted into three luminescent devices of correspondence and contributes component percentages accordingly.Spectrum or colour temperature
Demarcation is after the characteristic spectrum synthesis by each group luminescent device, through testing or calculating, to be converted into standard color temperature or CIE spectrum
Table figure.Although user is it is seen that standard spectrum colour temperature figure, each point has been converted in the colour temperature spectrum chart
The intensity contribution percentage of corresponding each luminescent device.Spectrum control unit is obtained after the signal of spectroscopic acquisition unit,
These signal transactings are obtained into three road pwm signals, its frequency is determined by built-in oscillator.Pwm signal is input into constant-current control unit,
It is converted into the current switch signal on three tunnels.Brightness control unit determines the amplitude of constant-current control unit output current.Each lights
Just by pwm signal control, size of current is adjusted the on-off time ratio that element works within the unit interval by brightness control unit, this
Sample luminescence unit sends the spatial distribution after light compositing and is just determined by pwm signal, and intensity corresponds to luminosity by brilliance control
Unit determines, so as to realize the regulation of spectrum and brightness.
With the operation principle that example illustrates the electro-optical device.Assume that three LED operate at full capacity under rated current, electric light
It is 4500K that device obtains light output colour temperature, and its output brightness is 3000LM.Adjusting brightness controller just can obtain less than 3000LM
4500K light.Spectroscopic acquisition unit sets spatial distribution or the colour temperature that three LED different operating Time transfer receivers are answered,
Its output signal sets the dutycycle of the on-off time ratio of each LED operation, i.e. pwm signal, also just sets each LED output
Intensity, be below or above 4500K so as to change the synthetic spectrum colour temperature that luminescence unit sent.
Embodiment two
Embodiment two is referring to Fig. 4.The electro-optical device can be used for controlling agriculture animal and plant growth intelligence luminous environment.Because dynamic
Plant has different demands to spectrum in different growing stage, thus spectrum adjustable range require it is wider.Luminescence unit is adopted
Four groups of light-emitting components：White light LEDs, blue-ray LED, green light LED, red-light LED that ultraviolet or blue colour fluorescent powder is excited.With embodiment one
Except for the difference that, because the electro-optical device employs four groups of light-emitting components, corresponding spectra collection signal is accomplished by four tunnels, PWM letters
Number control is also four tunnels, and constant-current control unit will control four road continuous currents outputs.Spectroscopic acquisition unit makes independent mould
Block, individually power supply, is then wirelessly sent to subsequent cell by wireless signal transceiver module.Here signals collecting mould
Block is also integrated with intensity control signal and obtains function, to receive the control signal that other sensors are obtained, such as obtains characteristic spectrum
Strength information.This electro-optical device can easily realize various spectrum outputs and the output of the primitive of RGB three, with full
The needs of the different times different time sections such as sufficient plant growth.
The present invention controls multi-group light-emitting device using current pulse width control and current amplitude, can increase electro-optical device
Spectral component, reduce the stimulation to human body of blue light and stroboscopic, the requirement of energy-conservation can be met again, while also improving electro-optical device
Controllability, can be widely used for it is various illumination and luminous environment control.
Can be seen that from the explanation of apparatus and method of the present invention and example the invention provides a kind of based on photophore
The device and control method of being composed electric light entirely of part characteristic wave spectrum, this method and device have simply, flexibly, applied range
The features such as.But described above to limit enforceable scope of the invention, every professional person is made on the basis of the present invention
Obvious or unconspicuous change, modification or improve, be regarded as without departing from the present invention Spirit Essence.
Claims (5)
1. a kind of electro-optical device, it is characterised in that：Including power subsystem, spectroscopic acquisition unit, spectrum control unit, constant current
Control unit, brightness control unit, luminescence unit,
Power supply of the power subsystem for needed for each unit offer work in electro-optical device；
Spectroscopic acquisition unit completes spectroscopic acquisition function；
Spectroscopic acquisition unit is that required target optical spectrum is resolved into into component spectra to send spectrum to single unit system
Contribution number, passes in a wired or wireless manner subsequent cell, and the spatial distribution that luminescence unit is sent can determine
And demarcation, through calculating or actual synthesis simulation, the target optical spectrum of setting is decomposed into into the luminescence unit institute of component devices
Corresponding percent composition, and this mapping relations are solidificated on device, call in order to user；
Spectroscopic acquisition unit institute input electrical signal is converted to switch time ratio signal by spectrum control unit；
The effect of spectrum control unit is to process spectroscopic acquisition unit institute input electrical signal, to decide whether to load luminous list
The power supply of unit, and the switch time ratio of luminescence unit power on signal is carried in, so as to ensure the realization of required spectrum；
Constant-current control unit is the switch time ratio signal for receiving spectrum control unit, by current sense, benchmark setting, ratio
Compared with, amplify the output of realizing stable and constant current；
Brightness control unit is to adjust constant-current control unit output current amplitude size, and receives the signal from sensor, with
Realize many condition control of electro-optical device；
Luminescence unit is the device that more than one can light after electrical signals are added；
Wherein spectroscopic acquisition unit is connected with spectrum control unit, and constant-current control unit is connected with spectrum control unit
Connect, luminescence unit is connected respectively with brightness control unit and constant-current control unit.
2. a kind of electro-optical device as claimed in claim 1, it is characterised in that：The luminescence unit includes that at least all the way white is sent out
Optical device and all the way single color light emitting devices, the spectrum ripple of the spectral wavelength ranges of the white luminous device than monochromatic luminescence unit
Long wide ranges, the luminous intensity of white luminous device is less than single color light emitting devices.
3. a kind of electro-optical device as claimed in claim 1, it is characterised in that：If the spectroscopic acquisition unit is believed by main line
Number collector composition, the switch time ratio signal value per road signal picker is by each road luminescent device spectrum to exporting total spectrum
Relative Contribution determine that the control signal of signal picker collection completes transmission in wireless or wired mode.
4. a kind of electro-optical device as claimed in claim 1, it is characterised in that：The sensor include apart from proximity transducer,
Touch sensing, infrared sensor, motion sensor or sonic sensor.
5. a kind of electro-optical device as claimed in claim 4, it is characterised in that：It is described apart from proximity transducer, touch sensing,
The signal of infrared sensor, motion sensor or sonic sensor completes transmission in wireless or wired mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310133934.8A CN104113953B (en) | 2013-04-17 | 2013-04-17 | Electro-optical device and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310133934.8A CN104113953B (en) | 2013-04-17 | 2013-04-17 | Electro-optical device and control method |
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| Publication Number | Publication Date |
|---|---|
| CN104113953A CN104113953A (en) | 2014-10-22 |
| CN104113953B true CN104113953B (en) | 2017-04-19 |
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| CN104968067A (en) * | 2015-01-09 | 2015-10-07 | 闵长伟 | LED light modulation toning control apparatus |
| CN108156712A (en) * | 2017-12-29 | 2018-06-12 | 厦门大学 | Four primary Micro-LED very-high solutions dot matrix Healthy Lighting system and application method |
| CN109152141A (en) * | 2018-09-21 | 2019-01-04 | 四维生态科技（杭州）有限公司 | A kind of cultivation box and its intelligent illuminating system, intelligent lighting system |
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|---|---|---|---|---|
| NL1016244C2 (en) * | 2000-09-22 | 2002-03-25 | Abraham Wilhelmus Brandon | Light element, especially for plant lamps used in greenhouses, comprises white light emitting diodes |
| CN101697654A (en) * | 2009-10-30 | 2010-04-21 | 中山大学 | Correlated color temperature and color rendering index self-calibration circuit of LED light source consisting of light of multiple colors |
| CN101725871A (en) * | 2010-01-25 | 2010-06-09 | 惠州市可道光电科技有限公司 | LED plant growth lamp |
| CN202652640U (en) * | 2012-06-08 | 2013-01-02 | 吴雯雯 | LED plant growing lamp |
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| JP5785393B2 (en) * | 2007-08-07 | 2015-09-30 | コーニンクレッカ フィリップス エヌ ヴェ | Method and apparatus for discriminating modulated light in a mixed light system |
| CN100485253C (en) * | 2007-10-16 | 2009-05-06 | 南京农业大学 | Spectrum flexible adjustable LED light source system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1016244C2 (en) * | 2000-09-22 | 2002-03-25 | Abraham Wilhelmus Brandon | Light element, especially for plant lamps used in greenhouses, comprises white light emitting diodes |
| CN101697654A (en) * | 2009-10-30 | 2010-04-21 | 中山大学 | Correlated color temperature and color rendering index self-calibration circuit of LED light source consisting of light of multiple colors |
| CN101725871A (en) * | 2010-01-25 | 2010-06-09 | 惠州市可道光电科技有限公司 | LED plant growth lamp |
| CN202652640U (en) * | 2012-06-08 | 2013-01-02 | 吴雯雯 | LED plant growing lamp |
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