CN112153786A - Lighting device with physiological dimming function and dimming method thereof - Google Patents
Lighting device with physiological dimming function and dimming method thereof Download PDFInfo
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- CN112153786A CN112153786A CN202010939764.2A CN202010939764A CN112153786A CN 112153786 A CN112153786 A CN 112153786A CN 202010939764 A CN202010939764 A CN 202010939764A CN 112153786 A CN112153786 A CN 112153786A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005286 illumination Methods 0.000 claims abstract description 277
- 238000001228 spectrum Methods 0.000 claims abstract description 15
- YJPIGAIKUZMOQA-UHFFFAOYSA-N Melatonin Natural products COC1=CC=C2N(C(C)=O)C=C(CCN)C2=C1 YJPIGAIKUZMOQA-UHFFFAOYSA-N 0.000 claims abstract description 12
- DRLFMBDRBRZALE-UHFFFAOYSA-N melatonin Chemical compound COC1=CC=C2NC=C(CCNC(C)=O)C2=C1 DRLFMBDRBRZALE-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229960003987 melatonin Drugs 0.000 claims abstract description 12
- 230000007423 decrease Effects 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 4
- 241000282412 Homo Species 0.000 claims description 2
- 230000002401 inhibitory effect Effects 0.000 claims description 2
- 208000003443 Unconsciousness Diseases 0.000 claims 3
- 230000005540 biological transmission Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- 230000004962 physiological condition Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000035790 physiological processes and functions Effects 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
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- 230000004075 alteration Effects 0.000 description 1
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- 230000003247 decreasing effect Effects 0.000 description 1
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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
- H05B47/105—Controlling the light source in response to determined parameters
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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
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/115—Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings
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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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Abstract
The invention discloses a lighting device with physiological dimming and a dimming method thereof. The lighting unit is provided with a plurality of groups of lighting modules. The control circuit controls the illumination unit to output a first illumination light source which accords with a first preset brightness in a first time period according to the first illumination requirement and the light sensing value of the light sensor. The control circuit controls the illumination unit to output a second illumination light source according with a second preset brightness in a second time interval according to a second illumination requirement and the light sensing value of the light sensor. Wherein the first illumination source has a higher melatonin suppressing spectrum for the person than the second illumination source. The control circuit dynamically controls any one or combination of the lighting modules to emit light according to a first illumination requirement and a second illumination requirement, so that the lighting unit generates the first lighting source and the second lighting source which are opposite to each other.
Description
Technical Field
The invention relates to the field of illumination, in particular to an illumination device with physiological dimming and a dimming method thereof.
Background
The lighting selection that current lighting device provided is more and more, can provide the illumination of the different light sources of multistage on the lighting device to effectively satisfy various light source demands of people in the life. If the lighting device needs to switch the lighting of the multi-segment light source, a user can select one of the lighting of the multi-segment light source as the currently used light source by the switching mode of the switch. However, the manual operation is cumbersome and inconvenient for users, and the spectra of different light sources cannot be adjusted according to the physiological conditions of the people at that time. For example, the melatonin secretion of a human varies over time and is affected by a specific spectrum during the work and rest of the human.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the lighting device with physiological dimming, which can automatically generate corresponding lighting sources according to different time intervals and meet the physiological condition requirements of users.
The invention also provides a dimming method of the lighting device, which can automatically switch according to different time intervals and modulate and generate a corresponding lighting source according to the product of the brightness and the physiological stimulus value, thereby meeting the physiological condition requirements of users.
A lighting device with physiological dimming according to an embodiment of a first aspect of the invention, comprising: the lighting unit is provided with a plurality of groups of lighting modules; a light sensor; the control circuit is electrically connected with the illumination unit and the light sensor respectively, controls the illumination unit to output a first illumination light source which accords with first preset brightness in a first time period according to a first illumination requirement and the light sensor of the light sensor, and controls the illumination unit to output a second illumination light source which accords with second preset brightness in a second time period according to a second illumination requirement and the light sensor of the light sensor; wherein the first illumination source has a higher melatonin suppressing spectrum for a human than the second illumination source; the control circuit dynamically controls one or more combinations of the plurality of lighting modules to emit light according to the first illumination requirement and the second illumination requirement, so that the lighting unit generates a first lighting source and a second lighting source.
The lighting device with physiological dimming provided by the embodiment of the invention has at least the following beneficial effects:
according to the lighting device, the control circuit can control the lighting unit to output two lighting sources according to two illumination requirements, and the two lighting sources can be obtained by compensating on the basis that the light sensor detects the illumination condition of the environment, so that the final output is not influenced by the external environment, and the switching among at least two lighting sources can be adjusted according to the physiological state of a user, so that the physiological requirements of the user are met.
According to some embodiments of the present invention, the control circuit compares the light sensed value with a first predetermined brightness during the first period, reduces the brightness of the first illumination source output by the illumination unit if the light sensed value is greater than the first predetermined brightness, increases the brightness of the first illumination source output by the illumination unit if the light sensed value is less than the first predetermined brightness, so that the brightness output of the first illumination light source is in accordance with the first preset brightness, the control circuit compares the light sensing value with the second preset brightness in the second time period, if the light sensing value is greater than the second preset brightness, the control circuit reduces the brightness of the second illumination light source output by the illumination unit, if the light sensing value is less than a second preset brightness, the control circuit increases the brightness of the second illumination light source output by the illumination unit so that the brightness output of the second illumination light source conforms to a second preset brightness.
According to some embodiments of the present invention, after the control circuit increases the brightness of the first illumination source output by the illumination unit or decreases the brightness of the first illumination source output by the illumination source in the first period, the control circuit correspondingly adjusts the combined light emission of the illumination modules in the illumination unit so that the product of the brightness of the first illumination source and the physiological stimulus value meets the first illumination requirement, and after the control circuit increases the brightness of the first illumination source output by the illumination unit or decreases the brightness of the first illumination source output by the illumination source in the second period, the control circuit correspondingly adjusts the combined light emission of the illumination modules in the illumination unit so that the product of the brightness of the second illumination source and the physiological stimulus value meets the second illumination requirement.
According to some embodiments of the present invention, the display device further comprises a human body sensor, the control circuit is electrically connected to the human body sensor, and the control circuit determines whether to activate the light sensor to perform the light sensing according to a sensing result of the human body sensor.
According to some embodiments of the present invention, the first illumination requirement and the second illumination requirement are different black illumination values, and each of the lighting modules includes at least one light emitting device.
According to some embodiments of the present invention, there are two groups of lighting modules in the lighting unit, which are a first lighting module and a second lighting module, respectively, and the first lighting module and the second lighting module have the same color temperature and different physiological stimulus values, respectively.
According to some embodiments of the present invention, at least two lighting modules in the lighting unit are a first lighting module and a second lighting module, and the first lighting module and the second lighting module have different color temperatures and different physiological stimulus values, respectively.
According to some embodiments of the present invention, there are four sets of lighting modules in the lighting unit, which are a first lighting module, a second lighting module, a third lighting module and a fourth lighting module, respectively, the first lighting module and the second lighting module have the same first color temperature and different physiological stimulus values, respectively, the third lighting module and the fourth lighting module have the same second color temperature and different physiological stimulus values, respectively, and the first color temperature is different from the second color temperature.
A lighting device with physiological dimming according to an embodiment of a second aspect of the invention, comprising: the lighting unit is provided with a plurality of groups of lighting modules; a light sensor; the control circuit is electrically connected with the illumination unit and the light sensor respectively, controls the illumination unit to output a first illumination light source which accords with first preset brightness in a first time period according to a first illumination requirement and a light sensing value of the light sensor, and controls the illumination unit to output a second illumination light source which accords with second preset brightness in a second time period according to a second illumination requirement; wherein the first and second illumination sources each have a distinct spectrum for suppressing melatonin in humans; the control circuit dynamically controls one or more combinations of the plurality of lighting modules to emit light according to the first illumination requirement and the second illumination requirement, so that the lighting unit generates a first lighting source and a second lighting source.
The lighting device with physiological dimming provided by the embodiment of the invention has at least the following beneficial effects:
according to the lighting device, the control circuit can control the lighting unit to output two lighting sources according to two illumination requirements, one lighting source can be obtained by compensation on the basis that the light sensor detects the illumination condition of the environment, so that the final output is not influenced by the external environment, the other lighting source can be obtained without compensation, the lighting device is flexibly controlled according to the actual condition, and the lighting device can be adjusted and switched among at least two lighting sources according to the physiological state of a user, so that the physiological requirements of the user are met.
According to some embodiments of the present invention, the control circuit compares the light sensing value with a first predetermined brightness in a first period, and decreases the brightness of the first illumination source output by the illumination unit if the light sensing value is greater than the first predetermined brightness, and increases the brightness of the first illumination source output by the illumination unit if the light sensing value is less than the first predetermined brightness, so that the brightness output of the first illumination source meets the first predetermined brightness.
According to some embodiments of the present invention, after the control circuit increases or decreases the brightness of the first illumination light source output by the illumination unit in the first period, the control circuit correspondingly adjusts the combined light emission of the illumination modules in the illumination unit, so that the product of the brightness of the first illumination light source and the physiological stimulus value meets a first illumination requirement.
According to some embodiments of the present invention, the control circuit correspondingly adjusts the combined light emission of the lighting modules in the lighting unit in a second time period, so that a product of the brightness of the second lighting source and the physiological stimulus value meets a second illumination requirement.
According to some embodiments of the present invention, the first illumination requirement and the second illumination requirement are different black illumination values, and each of the lighting modules includes at least one light emitting device.
According to some embodiments of the present invention, there are two groups of lighting modules in the lighting unit, which are a first lighting module and a second lighting module, respectively, and the first lighting module and the second lighting module have the same color temperature and different physiological stimulus values, respectively.
According to some embodiments of the present invention, at least two lighting modules in the lighting unit are a first lighting module and a second lighting module, and the first lighting module and the second lighting module have different color temperatures and different physiological stimulus values, respectively.
According to some embodiments of the present invention, there are four sets of lighting modules in the lighting unit, which are a first lighting module, a second lighting module, a third lighting module and a fourth lighting module, respectively, the first lighting module and the second lighting module have the same first color temperature and different physiological stimulus values, respectively, the third lighting module and the fourth lighting module have the same second color temperature and different physiological stimulus values, respectively, and the first color temperature is different from the second color temperature.
According to a dimming method of a lighting device according to an embodiment of a third aspect of the present invention, the lighting device having a plurality of lighting modules disposed therein includes: sensing a light sensing value of an environment where the lighting device is located; in a first time period, controlling the lighting device to output a first lighting source according with first preset brightness according to a first illumination requirement and a light sensing value; and controlling the lighting device to output a second lighting source which accords with second preset brightness according to a second illumination requirement in a second time interval; the first illumination light source and the second illumination light source respectively have different spectra for inhibiting melatonin; the lighting device dynamically controls one or more combinations of the lighting modules to emit light according to a first illumination requirement and a second illumination requirement so as to generate a first lighting source and a second lighting source; the product of the brightness of the first illumination light source and the physiological stimulus value meets a first illumination requirement; and the product of the brightness of the second illumination light source and the physiological stimulus value meets a second illumination requirement.
The dimming method can provide different lighting source outputs according to different time intervals so as to accord with the physiological condition of a user, so that the user is more awake in the day and more relaxed at night.
According to some embodiments of the present invention, the illumination apparatus compares the light sensing value with a first predetermined brightness during a first period, reduces the brightness of the output of the first illumination source if the light sensing value is greater than the first predetermined brightness, and increases the brightness of the output of the first illumination source if the light sensing value is less than the first predetermined brightness, so that the brightness of the output of the first illumination source meets the first predetermined brightness.
According to some embodiments of the present invention, the lighting device controls the lighting device to output the second lighting source according to the second illumination requirement and the light sensing value during the second time interval, if the light sensing value is greater than the second preset brightness, the lighting device decreases the brightness output by the second lighting source, and if the sensed value is less than the second preset brightness, the lighting device increases the brightness output by the second lighting source, so that the brightness output by the second lighting source meets the second preset brightness.
According to some embodiments of the present invention, the first illumination requirement and the second illumination requirement are different black illumination values, and each of the lighting modules includes at least one light emitting device.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block diagram of the schematic structure of an embodiment of the lighting device of the present invention;
FIG. 2 is a schematic block diagram of a control circuit of an embodiment of the lighting apparatus of the present invention;
FIG. 3 is a dimming flowchart of an embodiment of the lighting device of the present invention;
FIG. 4 is a flowchart illustrating dimming of an embodiment of the lighting device of the present invention;
FIG. 5 is a block diagram of another embodiment of the lighting device of the present invention;
fig. 6 is a dimming flowchart of another embodiment of the lighting device of the present invention.
Reference numerals:
the lighting device comprises a control circuit 10, a processor 101, a setting circuit 103, a brightness comparison circuit 105, a timing circuit 107, an illuminance calculation circuit 109, a light sensor 12, a power driving circuit 14, a lighting unit 16, a first lighting module 161, a second lighting module 162, a third lighting module 163, a fourth lighting module 164, a human body sensor 17 and a wireless transmission circuit 18.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the positional or orientational descriptions referred to, for example, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the positional or orientational relationships shown in the drawings and are for convenience of description and simplicity of description only, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and 2, the lighting device with physiological dimming in this embodiment includes a control circuit 10, a light sensor 12, a power driving circuit 14, a lighting unit 16 and a wireless transmission circuit 18, wherein the control circuit 10 is electrically connected to the light sensor 12, the power driving circuit 14 and the wireless transmission circuit 18, and the power driving circuit 14 is electrically connected to the lighting unit 16. In one embodiment, the power driving circuit 14 may also be directly integrated into the control circuit 10, so that the control circuit 10 may be directly electrically connected to the lighting unit 16.
It should be noted that the control circuit 10 may correspondingly control the lighting unit 16 to output the lighting light sources for suppressing the spectrum of melatonin at different time intervals according to an illumination requirement. For example, the illumination source includes a plurality of illumination modules, and different illumination modules have the same or different illumination characteristics, such as various combinations of Color Temperature (Color Temperature), physiological stimulus Factor (CAF), and brightness (illumination).
In addition, the illumination requirement provided to the control circuit 10 as the basis for the subsequent dimming is illustrated by a black illumination (EML) value. Further, the blackness value is calculated as follows:
blackout luminance value (EML) 1.218 CAF Lux … … … formula (1)
As described above, the control circuit 10 can achieve the standard of the illumination requirement by controlling the physiological stimulus value (CAF) and the luminance (Lux) in the illumination light source output by the illumination unit 16, that is, the product of the physiological stimulus value (CAF) and the luminance (Lux) can meet the illumination requirement.
In some embodiments of the present invention, in order to make the lighting unit 16 meet the illumination requirement, the lighting unit 16 is provided with a plurality of lighting modules, for example, and each lighting module may be composed of at least one light emitting element. Further, the light emitting element may be an LED light emitting element, but the invention is not limited thereto. For example, the lighting unit 16 includes a first lighting module 161, a second lighting module 162, a third lighting module 163, and a fourth lighting module 164. The first illumination module 161 and the second illumination module 162 have, for example, the same first color temperature and different physiological stimulus values, respectively. The third illumination module 163 and the fourth illumination module 164 have, for example, light sources with the same second color temperature and different physiological stimulus values, and the first color temperature may be the same as or different from the second color temperature, but the invention is not limited thereto, and the color temperature and the physiological stimulus value of each illumination module can be combined and matched according to actual requirements.
Therefore, the control circuit 10 can control any one or combination of the plurality of lighting modules in the lighting unit 16 to emit light, so that the lighting source output by the lighting unit 16 as a whole can meet the illumination requirement. For example, the first lighting module 161, the second lighting module 162, the third lighting module 163 and the fourth lighting module 164 may emit light individually or at least two of them may emit light, so as to generate the spectrum for suppressing melatonin required by the illuminance requirement through the single spectrum or the mixed light of multiple spectrums. Specifically, the control circuit 10 can execute various lighting changes of the lighting unit 16 through the power driving circuit 14, and the power driving circuit 14 can individually control whether any lighting module starts to light and the brightness change after the lighting is started. The power driving circuit 14 is not described in detail since it is well known to those skilled in the art.
It should be noted that the control circuit 10 can also obtain the ambient light source or the background light source at the position of the lighting device through the light sensor 12, and determine whether to compensate the lighting source output by the lighting device according to a light sensing value output by the light sensor 12. For example, the control circuit 10 controls the lighting unit 16 to output the lighting light sources for suppressing the melatonin spectra at different time intervals according to the illumination requirement, which has preset brightness corresponding to the illumination requirement at different preset time intervals.
For example, the illumination requirement may be preset with a first illumination source with a first preset brightness for a first period of time and a second illumination source with a second preset brightness for a second period of time. Therefore, when the control circuit 10 is in the first period, the control circuit 10 compares the light sensing value with the first preset brightness, and if the light sensing value is not equal to the first preset brightness, the control circuit 10 compensates the light source output by the illumination device, so that the first illumination light source can conform to the first preset brightness. In the same control circuit 10, during the second time interval, the control circuit 10 compares the light sensing value with the second preset brightness, and if the light sensing value is not equal to the second preset brightness, the control circuit 10 will compensate the light source output by the lighting device, so that the second lighting source can conform to the second preset brightness. The first period is, for example, a morning period and the second period is, for example, an evening period, and the first illumination light source has a higher melatonin spectrum suppression effect on a human body than the second illumination light source.
In addition, the wireless transmission circuit 18 can be used for the control circuit 10 to perform wireless transmission with an external remote control device, for example, the control circuit 10 can receive a control command issued by a person in the remote control device through the wireless transmission circuit 18, and the control command can be setting data of illumination requirements or other related commands for controlling power on, power off, color temperature or brightness adjustment of the lighting device.
In some embodiments of the present invention, the control circuit 10 may include a processor 101, a setting circuit 103, a brightness comparison circuit 105, a timing circuit 107, and an illuminance calculation circuit 109 as shown in fig. 2. The processor 101 is electrically connected to the setting circuit 103, the brightness comparing circuit 105, the timing circuit 107 and the illumination calculation circuit 109, respectively.
The setting circuit 103 stores data related to the illumination requirement, for example, the illumination requirement received by the processor 101 through the wireless transmission circuit 18 can be stored in the setting circuit 103. In one embodiment, the setting circuit 103 can be a non-volatile memory.
The brightness comparison circuit 105 is controlled by the processor 101, and compares the light sensing value received by the processor 101 through the light sensor 12 with a preset brightness in the illumination requirement.
The timing circuit 107 provides a timing function so that the processor 101 can control the lighting unit 16 to output the corresponding lighting sources according to the illumination requirement at different time intervals.
The illumination calculation circuit 109 is used to calculate the related values of the illumination requirement, such as the actual physiological stimulus value (CAF) and the actual luminance (Lux) of the illumination source, so that the processor 101 can dynamically control any one or combination of the illumination modules to emit light according to the calculation result of the illumination requirement circuit 109.
In some embodiments of the present invention, the processor 101 first obtains the data of the illumination requirement through the setting circuit 103, and for convenience of description, it is assumed that the illumination requirement has a first time period and a second time period, respectively, and the processor 101 controls the lighting unit 16 to output the first lighting source meeting a first predetermined brightness according to the first illumination requirement and the light sensing value in the first time period. And the processor 101 controls the lighting unit 16 to output the second lighting source with the second preset brightness according to the second illumination requirement and the light sensing value in the second time interval. The processor 101 knows whether the current time belongs to the first time period or the second time period through the timing function provided by the timing circuit 107.
If the current time is the first time period, the processor 101 obtains the light sensing value of the current position through the light sensor 12, and controls the brightness comparison circuit 105 to compare the light sensing value with the first predetermined brightness to obtain a compensation value. The brightness comparison circuit 105 subtracts the light sensing value from the first predetermined brightness to obtain a compensation value. If the light sensing value is greater than the first preset brightness, a positive compensation value is obtained; if the light sensing value is smaller than the first preset brightness, obtaining a negative compensation value; if the light sensing value is equal to the first predetermined brightness, there is no compensation value. The illumination calculation circuit 109 directly compensates the preset actual brightness according to the compensation value provided by the brightness comparison circuit 105, and then calculates the actual physiological stimulation value according to the first illumination requirement and the compensated actual brightness. Finally, the processor 101 calculates the provided actual brightness and the actual physiological stimulus value according to the illuminance calculation circuit 109, and further correspondingly adjusts the brightness of the first illumination source output by the illumination unit 16 to meet the first preset brightness, and the product of the actual brightness and the physiological stimulus value in the first illumination source also meets the first illuminance requirement.
In addition, if the current processing time interval is the second time interval, the processor 101 obtains the light sensing value of the current position through the light sensor 12, and controls the brightness comparison circuit 105 to compare the light sensing value with the second predetermined brightness to obtain a compensation value. The brightness comparison circuit 105 subtracts the light sensing value from the second predetermined brightness to obtain a compensation value. If the light sensing value is larger than the second preset brightness, a positive compensation value is obtained; if the light sensing value is smaller than the second preset brightness, obtaining a negative compensation value; if the light sensing value is equal to the second predetermined brightness, there is no compensation value. The illumination calculation circuit 109 directly compensates the preset actual brightness according to the compensation value provided by the brightness comparison circuit 105, and then calculates the actual physiological stimulation value according to the second illumination requirement and the compensated actual brightness. Finally, the processor 101 adjusts the brightness of the second illumination source output by the illumination unit 16 according to the actual brightness and the actual physiological stimulus value calculated and provided by the illumination calculation circuit 109, and the product of the actual brightness and the physiological stimulus value in the second illumination source also meets the second illumination requirement.
In some embodiments of the present invention, the processor 101, the setting circuit 103, the brightness comparing circuit 105, the timing circuit 107 and the illumination calculating circuit 109 may be integrated into one or any combination of an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or a system on a chip (SOC), and cooperate with a firmware to implement the above-mentioned functional operations.
As shown in fig. 3, a dimming process includes step S301 of setting an illumination requirement. The control circuit 10 in the lighting device can obtain the setting data related to the illumination requirement through the wireless transmission circuit 18, so that the control circuit 10 can control the illumination of the lighting unit 16 accordingly.
Step S303, providing a corresponding illumination light source according to the illumination requirement. The control circuit 10 controls any one or combination of the lighting modules in the lighting unit 16 to emit light according to the illumination requirement corresponding to the current time period.
In step S305, light sensing is performed. The control circuit 10 controls the light sensor 12 to sense the background light source or the ambient light source of the lighting device.
In step S307, it is determined whether or not the luminance is compensated. The control circuit 10 compares the light sensing value of the light sensor 12 with a preset brightness corresponding to the current time period. If the light sensing value is equal to the preset brightness corresponding to the current time period, the brightness compensation is not required, and the process returns to step S303 to continue. If the light sensing value is not equal to the preset brightness corresponding to the current time interval, brightness compensation is performed, and the process continues to step S309.
In step S309, a compensation value is calculated. When the light sensing value of the control circuit 10 is greater than the preset brightness, the control circuit 10 decreases the brightness output by the illumination unit 16, and when the sensing value of the control circuit 10 is less than the preset brightness, the control circuit 10 increases the brightness output by the illumination unit 16, so that the brightness of the illumination light source output by the illumination unit 16 meets the preset brightness. In one embodiment, the compensation value is calculated by subtracting the light sensing value from a predetermined brightness value. For example, if the light sensing value is 600(Lux) when the preset brightness is 500(Lux), the current brightness of the lighting unit 16 is decreased by 100(Lux), or if the light sensing value is 400(Lux) when the preset brightness is 500(Lux), the current brightness of the lighting unit 16 is increased by 100 (Lux).
As shown in fig. 4, another dimming procedure includes step S401, setting an illumination requirement. The control circuit 10 in the lighting device can obtain the setting data related to the illumination requirement through the wireless transmission circuit 18, so that the control circuit 10 can control the illumination of the lighting unit 16 accordingly.
Step S403, determine whether the current time interval is the first time interval, if yes, execute step S405, otherwise execute step S413.
Step S405, providing a first illumination source output corresponding to the first period. The control circuit 10 controls the lighting unit 16 to output the first lighting source with the first preset brightness according to the first illumination requirement set in the first time period.
In step S407, light sensing is performed. The control circuit 10 controls the light sensor 12 to sense the background light source or the ambient light source of the lighting device.
Step S409, whether or not luminance compensation is performed is determined. The control circuit 10 compares the light sensing value of the light sensor with a preset brightness corresponding to the current time period. If the light sensing value is equal to the preset brightness corresponding to the current time period, the brightness compensation is not required, and the process returns to step S403 to continue. If the light sensing value is not equal to the preset brightness corresponding to the current time interval, brightness compensation is performed, and the process continues to step S411.
In step S411, a compensation value is calculated. When the light sensing value of the control circuit 10 is greater than the preset brightness, the control circuit 10 decreases the brightness output by the illumination unit 16, and when the sensing value of the control circuit 10 is less than the preset brightness, the control circuit 10 increases the brightness output by the illumination unit 16, so that the brightness of the illumination light source output by the illumination unit 16 meets the preset brightness.
Step S413 provides a second illumination source output corresponding to the second period. The control circuit 10 controls the lighting unit 16 to output the first lighting source with the second preset brightness according to the second illuminance requirement set in the second time interval.
In the flowchart of fig. 4, a light compensation mechanism may be performed during the first period of time to keep the brightness of the first illumination source output by the illumination unit 16 from being affected by the background light source or the ambient light source. And the optical compensation mechanism is not executed in the second time interval, so that the electric energy consumption for the optical sensor to execute sensing is reduced. In some embodiments of the present invention, the first time period is, for example, a day time period, and the second time period is, for example, a night time period, but the present invention is not limited thereto.
As shown in fig. 5, the lighting device shown in fig. 5 is additionally provided with a human body sensor 17 relative to the lighting device shown in fig. 1, and the lighting unit 16 includes a first lighting module 161 and a second lighting module 162, and the remaining elements with the same symbols are the same as those described in fig. 1.
The body sensor 17 in the lighting device shown in fig. 5 is electrically connected to the control circuit 10. The human body sensor 17 is used for sensing whether a person exists at a spatial position of the lighting device. The control circuit 10 is used as the basis for activating the light sensor 12 according to the sensing result of the human body sensor.
In one embodiment, when the human body sensor 17 senses a human body, the control circuit 10 activates the light sensor 12 to perform the compensation mechanism described above to reduce the unwanted effect of the ambient light source or the background light source on the illumination requirement. When the human body sensor 17 does not sense a human body, the control circuit 10 turns off the function of the light sensor 12 or further turns off the operation of the illumination unit 16, thereby avoiding power consumption.
The first illumination module 161 and the second illumination module 162 included in the illumination unit 16, wherein the first illumination module 161 and the second illumination module 162 respectively have light sources with the same color temperature and different physiological stimulus values. In other embodiments, the first illumination module 161 and the second illumination module 162 may also have light sources with different color temperatures and different physiological stimulus values, respectively.
As shown in fig. 6, fig. 1, fig. 2 and fig. 5 may be referred to together for explaining the lighting device illustrated in fig. 6, but the flow shown in fig. 6 is not limited to the architecture shown in fig. 1, fig. 2 and fig. 5.
In step S601, an illuminance demand is set. The control circuit 10 in the lighting device can obtain the setting data related to the illumination requirement through the wireless transmission circuit 18, so that the control circuit 10 can control the illumination of the lighting unit accordingly.
Step S603, providing a corresponding illumination source according to the illumination requirement. The control circuit 10 controls any one or combination of the lighting modules in the lighting unit 16 to emit light according to the illumination requirement corresponding to the current time period.
In step S605, it is determined whether or not a person is present. The control circuit 12 determines whether there is a person at the installation position of the lighting device through the human body sensor 17, and performs step S607 when it is determined that there is a person, and performs step S603 when it is determined that there is no person.
In step S607, light sensing is performed. The control circuit 10 controls the light sensor 12 to sense the background light source or the ambient light source of the lighting device.
In step S609, it is determined whether or not the luminance is compensated. The control circuit 10 compares the light sensing value of the light sensor 12 with a preset brightness corresponding to the current time period. If the light sensing value is equal to the preset brightness corresponding to the current time period, the brightness compensation is not required, and the process returns to step S603 to continue. If the light sensing value is not equal to the preset brightness corresponding to the current time interval, brightness compensation is performed, and the process continues to step S611.
In step S611, a compensation value is calculated. When the light sensing value of the control circuit 10 is greater than the preset brightness, the control circuit 10 decreases the brightness output by the illumination unit 16, and when the sensing value of the control circuit 10 is less than the preset brightness, the control circuit 10 increases the brightness output by the illumination unit 16, so that the brightness of the illumination light source output by the illumination unit 16 meets the preset brightness.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (20)
1. A lighting device with physiological dimming, comprising:
the lighting unit is provided with a plurality of groups of lighting modules;
a light sensor; and the number of the first and second groups,
the control circuit is electrically connected with the illumination unit and the light sensor respectively, controls the illumination unit to output a first illumination light source which accords with a first preset brightness in a first time period according to a first illumination requirement and a light sensing value of the light sensor, and controls the illumination unit to output a second illumination light source which accords with a second preset brightness in a second time period according to a second illumination requirement and the light sensing value of the light sensor;
wherein the first illumination source has a higher melatonin suppressing spectrum for a human than the second illumination source;
the control circuit dynamically controls one or more combinations of the plurality of lighting modules to emit light according to the first illumination requirement and the second illumination requirement, so that the lighting unit generates a first lighting source and a second lighting source.
2. The lighting device with physiological dimming as set forth in claim 1, wherein: the control circuit compares the light sensing value with a first preset brightness in the first time period, reduces the brightness of the first illumination light source output by the illumination unit if the light sensing value is greater than the first preset brightness, increases the brightness of the first illumination light source output by the illumination unit if the light sensing value is less than the first preset brightness so that the brightness output of the first illumination light source conforms to the first preset brightness, compares the light sensing value with a second preset brightness in the second time period, reduces the brightness of the second illumination light source output by the illumination unit if the light sensing value is greater than the second preset brightness, and increases the brightness of the second illumination light source output by the illumination unit if the light sensing value is less than the second preset brightness so that the brightness output of the second illumination light source conforms to the second preset brightness.
3. The lighting device with physiological dimming as set forth in claim 2, wherein: after the control circuit increases the brightness of the first illumination source output by the illumination unit or decreases the brightness of the first illumination source output by the illumination source in the first time period, the control circuit correspondingly adjusts the combined light emission of the illumination modules in the illumination unit so that the product of the brightness of the first illumination source and the physiological stimulus value meets a first illumination requirement, wherein after the control circuit increases the brightness of the first illumination source output by the illumination unit or decreases the brightness of the first illumination source output by the illumination source in the second time period, the control circuit correspondingly adjusts the combined light emission of the illumination modules in the illumination unit so that the product of the brightness of the second illumination source and the physiological stimulus value meets a second illumination requirement.
4. The lighting device with physiological dimming as set forth in claim 2, wherein: the human body sensor is electrically connected with the control circuit, and the control circuit determines whether to start the optical sensor to execute optical sensing according to the sensing result of the human body sensor.
5. The lighting device with physiological dimming as set forth in claim 1, wherein: the first illumination requirement and the second illumination requirement are different black-out illumination values respectively, and any one of the lighting modules comprises at least one light-emitting element.
6. The lighting device with physiological dimming as set forth in claim 1, wherein: the lighting unit comprises a lighting unit and a control unit, wherein the lighting unit comprises two groups of lighting modules, namely a first lighting module and a second lighting module, and the first lighting module and the second lighting module respectively have the same color temperature and different physiological stimulus values.
7. The lighting device with physiological dimming as set forth in claim 1, wherein: the lighting unit comprises at least two lighting modules, namely a first lighting module and a second lighting module, wherein the first lighting module and the second lighting module respectively have different color temperatures and different physiological stimulus values.
8. The lighting device with physiological dimming as set forth in claim 1, wherein: the lighting modules in the lighting unit are four groups, namely a first lighting module, a second lighting module, a third lighting module and a fourth lighting module, wherein the first lighting module and the second lighting module respectively have the same first color temperature and different physiological stimulus values, the third lighting module and the fourth lighting module respectively have the same second color temperature and different light sources with different physiological stimulus values, and the first color temperature is different from the second color temperature.
9. A lighting device with physiological dimming, comprising:
the lighting unit is provided with a plurality of groups of lighting modules;
a light sensor; and the number of the first and second groups,
the control circuit is electrically connected with the illumination unit and the light sensor respectively, controls the illumination unit to output a first illumination light source which accords with first preset brightness in a first time period according to a first illumination requirement and a light sensing value of the light sensor, and controls the illumination unit to output a second illumination light source which accords with second preset brightness in a second time period according to a second illumination requirement;
wherein the first and second illumination sources each have a distinct spectrum for suppressing melatonin in humans;
the control circuit dynamically controls one or more combinations of the plurality of lighting modules to emit light according to the first illumination requirement and the second illumination requirement, so that the lighting unit generates a first lighting source and a second lighting source.
10. The lighting device with physiological dimming of claim 9, wherein: the control circuit compares the light sensing value with a first preset brightness in a first period, reduces the brightness of the first illumination source output by the illumination unit if the light sensing value is greater than the first preset brightness, and increases the brightness of the first illumination source output by the illumination unit if the light sensing value is less than the first preset brightness, so that the brightness output of the first illumination source meets the first preset brightness.
11. The lighting device with physiological dimming as set forth in claim 10, wherein: after the control circuit increases the brightness of the first illumination light source output by the illumination unit or decreases the brightness of the first illumination light source output by the illumination unit in the first period, the control circuit correspondingly adjusts the combined light emission of the illumination modules in the illumination unit, so that the product of the brightness of the first illumination light source and the physiological stimulus value meets a first illumination requirement.
12. The lighting device with physiological dimming as set forth in claim 10, wherein: the control circuit correspondingly adjusts the combined light emission of the lighting modules in the lighting unit in a second time interval so that the product of the brightness of the second lighting source and the physiological stimulus value meets a second illumination requirement.
13. The lighting device with physiological dimming of claim 9, wherein: the first illumination requirement and the second illumination requirement are different black-out illumination values respectively, and any one of the lighting modules comprises at least one light-emitting element.
14. The lighting device with physiological dimming of claim 9, wherein: the lighting unit comprises a lighting unit and a control unit, wherein the lighting unit comprises two groups of lighting modules, namely a first lighting module and a second lighting module, and the first lighting module and the second lighting module respectively have the same color temperature and different physiological stimulus values.
15. The lighting device with physiological dimming of claim 9, wherein: the lighting unit comprises at least two lighting modules, namely a first lighting module and a second lighting module, wherein the first lighting module and the second lighting module respectively have different color temperatures and different physiological stimulus values.
16. The lighting device with physiological dimming of claim 9, wherein: the lighting modules in the lighting unit are four groups, namely a first lighting module, a second lighting module, a third lighting module and a fourth lighting module, wherein the first lighting module and the second lighting module respectively have the same first color temperature and different physiological stimulus values, the third lighting module and the fourth lighting module respectively have the same second color temperature and different light sources with different physiological stimulus values, and the first color temperature is different from the second color temperature.
17. A dimming method of a lighting device is characterized in that a plurality of lighting modules are arranged in the lighting device, and the dimming method comprises the following steps:
sensing a light sensing value of an environment where the lighting device is located;
in a first time period, controlling the lighting device to output a first lighting source according with first preset brightness according to a first illumination requirement and a light sensing value; and controlling the lighting device to output a second lighting source which accords with second preset brightness according to a second illumination requirement in a second time interval;
the first illumination light source and the second illumination light source respectively have different spectra for inhibiting melatonin;
the lighting device dynamically controls one or more combinations of the lighting modules to emit light according to a first illumination requirement and a second illumination requirement so as to generate a first lighting source and a second lighting source;
the product of the brightness of the first illumination light source and the physiological stimulus value meets a first illumination requirement;
and the product of the brightness of the second illumination light source and the physiological stimulus value meets a second illumination requirement.
18. The dimming method for a lighting device according to claim 17, wherein: the lighting device compares the light sensing value with a first preset brightness in a first time period, reduces the brightness output by the first lighting source if the light sensing value is greater than the first preset brightness, and increases the brightness output by the first lighting source if the sensing value is less than the first preset brightness, so that the brightness output by the first lighting source meets the first preset brightness.
19. The dimming method for a lighting device according to claim 17, wherein: the lighting device controls the lighting device to output a second lighting source according to a second illumination requirement and the light sensing value in a second time interval, if the light sensing value is larger than a second preset brightness, the lighting device reduces the brightness output by the second lighting source, and if the sensing value is smaller than the second preset brightness, the lighting device increases the brightness output by the second lighting source, so that the brightness output by the second lighting source accords with the second preset brightness.
20. The dimming method for a lighting device according to claim 17, wherein: the first illumination requirement and the second illumination requirement are different black-out illumination values respectively, and any one of the lighting modules comprises at least one light-emitting element.
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