KR102021362B1 - MacAdam Ellipse color temperature tracking method and LED tunnel light for using the same - Google Patents

Abstract

According to one embodiment, disclosed is a lighting device comprising: a light source including a first LED for outputting light of a first color temperature, and a second LED for outputting light of a second color temperature; and a processor for controlling the light outputted from the light source such that a coordinate of the light outputted from the light source is located in a predetermined path connecting a first coordinate and a second coordinate on a MacAdam ellipse. Specifically, the present invention may provide a method of outputting light by controlling the color temperature through a predetermined manner in a lighting device including LEDs.

Description

MacAdam Ellipse color temperature tracking method and LED tunnel light for using the same}

The present disclosure discloses a luminaire comprising a plurality of LEDs.

Luminaires using LEDs are used for a wide variety of applications. In particular, many luminaires including one or more LEDs are commercially available.

However, there is a lack of detailed execution techniques and methods for controlling the color temperature by controlling a plurality of LEDs as needed. In particular, in the case of a luminaire with a color temperature controlled, there is an industrial need for a luminaire having a low cost and simple structure even though the color temperature is adjusted because an excessively large number of LEDs are used or an excessively high price is often used.

Publication No. 10-2011-0017608 (2011.02.22)

The present disclosure may provide a McAdam Ellips color temperature tracking method and an LED tunnel luminaire using the same. Specifically, a method of outputting light by controlling a color temperature in a predetermined manner in which a luminaire including a plurality of LEDs may be provided.

 The technical problem to be solved is not limited to the technical problems as described above, and various technical problems may be further included within the scope apparent to those skilled in the art.

The luminaire according to one aspect includes a light source including a first LED for outputting light of a first color temperature and a second LED for outputting light of a second color temperature; And a processor configured to control the light output from the light source so that the coordinates of the light output from the light source are positioned in a predetermined path connecting the first coordinate and the second coordinate on a MacAdam ellipse. One coordinate represents the first color temperature on the McAdam ellipse, the second coordinate represents the second color temperature on the McAdam ellipse, and the processor coordinates on the McAdam ellipse represented by the light output from the light source. The duty ratio of the first LED and the second LED may be controlled such that is included in the predetermined path.

In addition, the preset X0 and YO paths are (0.46, 0.41), (0.43, 0.40), (0.40, 0.38), (0.38, 0.37), (0.36, 0.35), (0.34, 0.35), (0.33, 0.34 ), (0.32, 0.33) and (0.31, 0.33) and at least one of the coordinate values, the coordinate values may be a value rounded to the third decimal place.

In addition, the preset XO and YO paths are (0.458, 0.410), (0.434, 0.396), (0.401, 0.378), (0.378, 0.365), (0.360, 0.355), (0.345, 0.347), (0.332, 0.340). ), (0.322, 0.334) and (0.312, 0.328) at least one of the coordinate values, the coordinate values may be a value rounded to the fourth decimal place.

Also, the above (0.46, 0.41), (0.43, 0.40), (0.40, 0.38), (0.38, 0.37), (0.36, 0.35), (0.34, 0.35), (0.33, 0.34), (0.32, 0.33) And the color temperature of the XO and YO coordinate values (0.31, 0.33) may correspond to 2700K, 3000K, 3500K, 4000K, 4500K, 5000K, 5500K, 6000K, and 6500K, respectively.

In addition, the first color temperature may be about 2700K, and the second color temperature may be about 6500K.

In addition, the color temperature of the light output from the light source may be determined according to the duty ratio.

In addition, the color temperature of the light output from the light source may be determined according to the current time and / or the current position of the light source.

In addition, the light source is located in the tunnel, and the brightness of the light output by the light source may be determined according to the expected traveling direction of the vehicle.

In addition, the color temperature of the light output from the light source may be determined corresponding to the current time and / or the standard daylight color temperature at the current position of the light source.

The apparatus may further include a communication unit configured to receive a control signal from the mobile terminal.

The present disclosure may provide a McAdam Ellips color temperature tracking method and an LED tunnel luminaire using the same.

1 is a block diagram illustrating a luminaire including a first LED and a second LED according to an embodiment.
2 is a diagram illustrating an example of a preset path connecting first coordinates and second coordinates on McAdam ellipse according to an exemplary embodiment.
FIG. 3 is a diagram illustrating an example in more detail of a preset path connecting first coordinates and second coordinates on McAdam ellipse according to an exemplary embodiment.
4 is a diagram illustrating an example of controlling light output from a luminaire over time according to an embodiment.
5 is a block diagram illustrating an example of a luminaire that operates in conjunction with a mobile terminal according to an exemplary embodiment.
6 is a block diagram illustrating an example of an LED driver according to an exemplary embodiment.

The terminology used in the embodiments is a general term that has been widely used as much as possible in consideration of the functions of the present invention, but may vary according to the intention or precedent of a person skilled in the art, the emergence of new technology, and the like. In addition, in certain cases, there is also a term arbitrarily selected by the applicant, in which case the meaning will be described in detail in the description of the invention. Therefore, the terms used in the present invention should be defined based on the meanings of the terms and the contents throughout the present invention, rather than the names of the simple terms.

When a part of the specification is said to "include" any component, this means that it may further include other components, except to exclude other components unless otherwise stated. In addition, the “…” described in the specification. Wealth ”,“… Module ”means a unit for processing at least one function or operation, which may be implemented in hardware or software, or a combination of hardware and software.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

Hereinafter, with reference to the drawings will be described embodiments of the present invention;

1 is a diagram illustrating a luminaire 100 including a first LED 111 and a second LED 112 according to an embodiment.

As shown in FIG. 1, the luminaire 100 may include a light source 110, a processor 120, and a communication unit 130. However, it will be understood by those skilled in the art that other general purpose components other than the components shown in FIG. 1 may be further included in the luminaire 100. For example, the luminaire 100 may further include an LED driver. Alternatively, according to another embodiment, it will be understood by those skilled in the art that some of the components shown in FIG. 1 may be omitted. For example, the luminaire 100 may not include the communication unit 130.

In addition, the numerical values described below may be interpreted as numerical values within a reasonable range according to the error. For example, a numerical value of "1" may be interpreted as "1.01".

The light source 110 according to an embodiment may include a first LED 111 that outputs light of a first color temperature and a second LED 112 that outputs light of a second color temperature. Since the first LED 111 outputs the light of the first color temperature, and the second LED 112 outputs the light of the second color temperature, the light source 110 has a color temperature of the intermediate value between the first color temperature and the second color temperature. Can output light.

According to an embodiment, the first color temperature may be 2700K and the second color temperature may be 6500K. Accordingly, the luminaire 100 can output light having color temperatures of 3000K, 3500K, 4000K, 4500K, 5000K, 5500K, 6000K, etc., which are color temperatures of intermediate values between the first and second color temperatures as well as the first and second color temperatures. Can be.

The light source 110 according to an embodiment may control the color temperature of the light output from the light source 110 by controlling the brightness of the light output from the first LED 111 and the brightness of the light output from the second LED 112. . For example, when only the first LED 111 is turned on, the color temperature of the light output from the first LED 111 (for example, 2700K) becomes the color temperature of the light output from the light source 110, and the second LED. When only 112 is turned on, the color temperature of the light output from the second LED 112 (for example, 6500K) may be the color temperature of the light output from the light source 110.

In addition, the light source 110 controls the brightness of the light output by the first LED 111 and the brightness of the light output by the second LED 112 to determine the color temperature of the light output from the light source 110 by using the first color temperature and the second color temperature. It can be determined by the median color temperature of 3000K, 3500K, 4000K, 4500K, 5000K, 5500K, 6000K and so on.

The processor 120 according to an embodiment outputs from the light source 110 such that the coordinates of the light output from the light source 110 are located in a predetermined path connecting the first coordinate and the second coordinate on the MacAdam ellipse. Can control the light. Here, the first coordinate may indicate a first color temperature on McAdam ellips, and the second coordinate may indicate a second color temperature on McAdam ellips. For example, the first coordinate may be a coordinate representing a color temperature of 2700K on McAdam Ellipse, and the second coordinate may be a coordinate representing a color temperature of 6500K on McAdam Ellipse. In the following description, the coordinate value or the coordinate may mean an X0, Y0 coordinate value or an X0, Y0 coordinate.

The preset path may mean a path connecting the first coordinate and the second coordinate on the MacAdam ellipse, and may be a straight line or a curve.

The processor 120 controls the duty ratio of the first LED 111 and the second LED 112 so that the coordinates on the McAdam ellipse indicated by the light output from the light source 110 are included in the predetermined path. can do.

According to one embodiment, the predetermined path is (0.46, 0.41), (0.43, 0.40), (0.40, 0.38), (0.38, 0.37), (0.36, 0.35), (0.34, 0.35), (0.33, 0.34), (0.32, 0.33) and (0.31, 0.33) may include at least one of the XO, Y0 coordinate values, wherein the coordinate values may be a value rounded to the third decimal place. For example, the first coordinate may be an XO, YO coordinate of (0.46, 0.41) representing a color temperature of 2700K, and the second coordinate may be an XO, YO coordinate of (0.31, 0.33) representing a color temperature of 6500K, and may be preset. The path is a path connecting the first coordinate and the second coordinate, and is (0.43, 0.40), (0.40, 0.38), (0.38, 0.37), (0.36, 0.35), (0.34, 0.35), (0.33, 0.34) And XO and YO coordinate values (0.32, 0.33) may be located on a predetermined path. Also, (0.46, 0.41), (0.43, 0.40), (0.40, 0.38), (0.38, 0.37), (0.36, 0.35), (0.34, 0.35), (0.33, 0.34), (0.32, 0.33) and The color temperature of XO and YO coordinate values (0.31, 0.33) may correspond to 2700K, 3000K, 3500K, 4000K, 4500K, 5000K, 5500K, 6000K and 6500K, respectively.

According to one embodiment, the predetermined path is (0.458, 0.410), (0.434, 0.396), (0.401, 0.378), (0.378, 0.365), (0.360, 0.355), (0.345, 0.347), (0.332, 0.340), (0.322, 0.334) and (0.312, 0.328) may include at least one of the XO, YO coordinate values, wherein the coordinate values may be a value rounded off to the fourth decimal place. For example, the first coordinate may be an XO, YO coordinate of (0.458, 0.410) representing a color temperature of 2700K, and the second coordinate may be a (0.312, 0.328) XO, YO coordinate representing a color temperature of 6500K, and is a preset path. Are paths connecting the first coordinate with the second coordinate, and are (0.434, 0.396), (0.401, 0.378), (0.378, 0.365), (0.360, 0.355), (0.345, 0.347), (0.332, 0.340) and The XO and YO coordinate values (0.322, 0.334) may be located on a predetermined path. Also, (0.458, 0.410), (0.434, 0.396), (0.401, 0.378), (0.378, 0.365), (0.360, 0.355), (0.345, 0.347), (0.332, 0.340), (0.322, 0.334) and The color temperature of the XO and YO coordinate values (0.312, 0.328) may correspond to 2700K, 3000K, 3500K, 4000K, 4500K, 5000K, 5500K, 6000K, and 6500K, respectively.

According to one embodiment, the predetermined route is (0.4578, 0.4101), (0.4335, 0.3964), (0.4013, 0.3783), (0.3778, 0.3651), (0.3596, 0.3548), (0.3448, 0.3465), (0.3324, 0.3395), (0.3220, 0.3336) and (0.3123, 0.3282) may include at least one of the XO, YO coordinate values. For example, the first coordinate may be a coordinate of (0.4578, 0.4101) representing a color temperature of 2700K, the second coordinate may be (0.3123, 0.3282) XO, YO coordinate representing a color temperature of 6500K, and the preset path may be a first coordinate. As a path connecting the coordinates with the second coordinates, (0.4335, 0.3964), (0.4013, 0.3783), (0.3778, 0.3651), (0.3596, 0.3548), (0.3448, 0.3465), (0.3324, 0.3395) and (0.3220, 0.3336) XO and YO coordinate values may be located on a predetermined path. Also, (0.4578, 0.4101), (0.4335, 0.3964), (0.4013, 0.3783), (0.3778, 0.3651), (0.3596, 0.3548), (0.3448, 0.3465), (0.3324, 0.3395), (0.3220, 0.3336) and The color temperature of the XO and YO coordinate values (0.3123, 0.3282) may correspond to 2700K, 3000K, 3500K, 4000K, 4500K, 5000K, 5500K, 6000K, and 6500K, respectively.

The processor 120 according to an embodiment may control the color temperature of the light output from the light source 110 according to the duty ratio of the first LED 111 and the second LED 112.

Since the first LED 111 outputs light of the first color temperature, and the second LED 112 outputs light of the second color temperature, the light source 110 includes the first LED 111 and the second LED 112. The duty ratio of the control panel may be controlled to output light having a color temperature that is intermediate between the first color temperature and the second color temperature.

The processor 120 according to an embodiment may determine a color temperature of light output from the light source 110 according to a current time and / or a current position of the light source 110. For example, the processor 120 may determine the color temperature of the light output from the light source 110 as a color temperature corresponding to the current temperature and the color temperature of the sky at the current location. For example, the processor 120 may determine a color temperature of light output from the light source 110 as a color temperature close to blue at noon, and a color temperature close to red in the morning. As another example, the color temperature of the light output by the light source 110 may be determined corresponding to the current time and / or the standard daylight color temperature at the current location of the light source 110.

The luminaire 100 according to an embodiment may be located in a tunnel. Even when the luminaire 100 is located in the tunnel, when the light source 110 outputs light having a color temperature corresponding to the color temperature of the natural light outside the tunnel, the light felt by the driver when exiting the tunnel in the tunnel or entering the tunnel outside the tunnel. The difference can be reduced.

When the light source 110 is located in the tunnel, the color temperature of the light output by the light source 110 or the brightness (eg, illuminance: Lux) of the light may be determined according to the expected traveling direction of the vehicle. For example, the processor 120 may determine whether the predicted driving direction of the vehicle enters the tunnel, whether the predicted driving direction of the vehicle proceeds out of the tunnel, whether the predicted driving direction of the vehicle is east to west, or the predicted driving of the vehicle. The driver's comfort can be adjusted by adjusting the color temperature and brightness in consideration of the expected direction of the vehicle, such as whether the direction is from west to east, the expected direction of the vehicle from north to south, and the estimated direction of the vehicle from south to north. It can be secured.

The luminaire 100 adjusts an output value of an LED having a unique color coordinate by using two kinds of existing LEDs (for example, the first LED 111 and the second LED 112) that are mass-produced. (E.g., 2,700K ~ 6,500K) can be matched with daylight, and the brightness can be adjusted according to the tunnel conditions (vehicle entrance and exit direction).

The processor 120 according to an embodiment may control brightness (illuminance). Also, the luminaire 100 may include a memory (not shown), and the processor 120 may receive and use data from the memory. The memory may store various data for operating the luminaire 100. For example, the memory may store global sunrise mall related information according to latitude and longitude, color temperature information of natural light according to latitude, longitude and time, and color temperature information of natural light according to weather.

In addition, the processor 120 may receive state information such as a voltage V, a current A, a power factor value λ, a power consumption W, an operating time Wh, and an ON / OFF state. May be stored in memory.

The luminaire 100 according to an embodiment may include a communication unit 130. The communication unit 130 may transmit and receive various information. For example, the communication unit 130 may receive a control signal from the mobile terminal.

The luminaire 100 may receive a program. For example, the luminaire 100 may receive a program through an on / off signal using a power line. As another example, the luminaire 100 may receive a program through the communication unit 130. The communication unit 130 may receive a program through the communication port DALI.

The communication unit 130 may communicate with various types of external devices according to various types of communication methods. The communication unit 130 may include at least one of a Wi-Fi chip, a Bluetooth chip, a wireless communication chip, and an NFC chip. The luminaire 100 may communicate with various external devices using the communication unit 130.

The Wi-Fi chip and the Bluetooth chip may communicate with each other via Wi-Fi and Bluetooth. In the case of using a Wi-Fi chip or a Bluetooth chip, various connection information such as SSID and session key may be transmitted and received first, and then various communication information may be transmitted and received by using the same. The wireless communication chip may refer to a chip that performs communication according to various communication standards such as IEEE, Zigbee, 3rd Generation (3G), 3rd Generation Partnership Project (3GPP), Long Term Evolution (LTE), and the like. The NFC chip may refer to a chip operating in a near field communication (NFC) method using a 13.56 MHz band among various RF-ID frequency bands such as 135 kHz, 13.56 MHz, 433 MHz, 860-960 MHz, 2.45 GHz, and the like.

The luminaire 100 may operate by receiving a program through the communication unit 130. For example, the luminaire 100 may receive a program for geographic information (latitude and longitude), real-time color temperature, step-by-step color temperature operation time, brightness (illuminance), etc. in a 2.4 GHz Zigbee wireless communication method.

In addition, the luminaire 100 may include a Real Time Clock (RTC) chip.

FIG. 2 is a diagram illustrating an example of a preset path connecting first coordinates 210 and second coordinates 290 on McAdam ellipse according to one embodiment.

Referring to FIG. 2, according to an exemplary embodiment, first and second coordinates 210 and 290, which are both end points of a predetermined path, may be identified. In addition, a plurality of intermediate coordinates 220, 230, 240, 250, 260, 270, and 280 may be located on a predetermined path according to an embodiment. The preset path in FIG. 3 will be described in more detail.

3 is a diagram illustrating an example in more detail of a predetermined path connecting a first coordinate 310 and a second coordinate 390 on a McAdam ellipse according to an exemplary embodiment.

[Table 1] is a table showing an example of the coordinates and the color temperature according to the predetermined path step by step.

Referring to [Table 1], the preset route is (0.4578, 0.4101), (0.4335, 0.3964), (0.4013, 0.3783), (0.3778, 0.3651), (0.3596, 0.3548), (0.3448, 0.3465), (0.3324 , 0.3395), (0.3220, 0.3336) and (0.3123, 0.3282) may include at least one of the XO, YO coordinate values. For example, the first coordinate may be an XO, YO coordinate of (0.4578, 0.4101) representing a color temperature of 2700K, and the second coordinate may be a (0.3123, 0.3282) XO, YO coordinate representing a color temperature of 6500K, and is a preset path. Are paths connecting the first coordinate and the second coordinate, and are (0.4335, 0.3964), (0.4013, 0.3783), (0.3778, 0.3651), (0.3596, 0.3548), (0.3448, 0.3465), (0.3324, 0.3395), and The XO and YO coordinate values (0.3220 and 0.3336) may be located on a predetermined path. Also, (0.4578, 0.4101), (0.4335, 0.3964), (0.4013, 0.3783), (0.3778, 0.3651), (0.3596, 0.3548), (0.3448, 0.3465), (0.3324, 0.3395), (0.3220, 0.3336) and The color temperature of the XO and YO coordinate values (0.3123, 0.3282) may correspond to 2700K, 3000K, 3500K, 4000K, 4500K, 5000K, 5500K, 6000K, and 6500K, respectively.

The luminaire 100 according to an embodiment may control the color temperature of the output light according to the duty ratio of the first LED 111 and the second LED 112.

In addition, the lamp 100 may control the brightness of the light output from the first LED 111 and the second LED 112.

4 is a diagram illustrating an example of controlling the light output by the luminaire 100 according to the passage of time according to one embodiment.

Daylight color temperatures may be different in the morning time zone 410, the lunch time zone 420, and the evening time zone 430. Therefore, the luminaire 100 adjusts the output value of the LED having a unique color coordinate by using the first LED 111 and the second LED 112 to adjust the color temperature of the output light to a preset range (for example, 2,700K to 6,500K). It can be controlled to correspond to the day light (Day light) within.

5 is a diagram illustrating an example of a luminaire 100 that operates in conjunction with a mobile terminal 550 according to an embodiment.

As shown in FIG. 5, the light fixture 100 may include a two-color LED module 510, an LED driver 520, a wireless communication unit 530, and a power supply unit 540. However, it will be understood by those skilled in the art that other general purpose components other than the components shown in FIG. 5 may be further included in the luminaire 100. For example, the luminaire 100 may further include a memory. Alternatively, according to another embodiment, some of the elements shown in FIG. 5 may be omitted by those of ordinary skill in the art.

The luminaire 100 may receive data through the power supply unit 540 or the wireless communication unit 530. For example, the luminaire 100 may receive a program through an on / off signal using a power line. As another example, the luminaire 100 may receive a program through the wireless communication unit 530.

The wireless communication unit 530 may receive various data from the mobile terminal 550, and the mobile terminal 550 may communicate with the luminaire 100 according to a user input. For example, the mobile terminal 550 may receive and display current state information of the luminaire 100, and the luminaire 100 may receive a request corresponding to a user input that is input through the mobile terminal 550. The operation of the 100 can be controlled. For example, the luminaire 100 may operate according to one of the plurality of operation modes in response to a user input.

6 is a block diagram illustrating an example of an LED driver 520 according to an exemplary embodiment.

As illustrated in FIG. 6, the LED driver 520 may include an operation unit 610, a memory unit 620, a real time clock (RTC) 630, an output unit 640, a power supply unit 650, and a communication unit 660. It may include. However, it will be understood by those skilled in the art that other general-purpose components other than the components shown in FIG. 6 may be further included in the LED driver 520. Alternatively, according to another embodiment, some of the components shown in FIG. 6 may be omitted by those of ordinary skill in the art.

The power supply unit 650 may receive power from the outside of the LED driver 520, and may also receive data in some cases. The communication unit 660 may transmit and receive data to or from the outside of the LED driver 520 in a wired or wireless manner. The output unit may apply an output to the LED under the control of the calculator 610.

The calculation unit 610 may control the output unit 640, the power supply unit 650, the communication unit 660, and the like, and the memory unit 620 may store various data. The RTC 630 may provide information about the current time to the calculator 610 and operate in conjunction with the calculator 610.

In addition, according to an exemplary embodiment, the operation unit 610 may perform a function performed by the processor 120 described above.

On the other hand, the above-described method can be written as a program that can be executed in a computer, it can be implemented in a general-purpose digital computer to operate the program using a computer-readable recording medium. In addition, the structure of the data used in the above-described method can be recorded on the computer-readable recording medium through various means. The computer-readable recording medium may include a storage medium such as a magnetic storage medium (eg, ROM, RAM, USB, floppy disk, hard disk, etc.), an optical reading medium (eg, CD-ROM, DVD, etc.). do.

Those skilled in the art will appreciate that the present invention may be embodied in a modified form without departing from the essential characteristics of the above-described substrate. Therefore, the disclosed methods should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

100: luminaire 110: light source
111: first LED 112: second LED
120: processor 130: communication unit
510: 2 color LED module 520: LED driver
530: wireless communication unit 540: power unit
610: calculation unit 620: memory unit
630: RTC 640: output unit
650: power supply unit 660: communication unit

Claims (10)

A light source comprising a first LED for outputting light of a first color temperature and a second LED for outputting light of a second color temperature;
A processor configured to control the light output from the light source such that the coordinates of the light output from the light source are located in a predetermined path connecting first coordinates and second coordinates on a MacAdam ellipse; And
A memory for storing world sunrise mall related information according to latitude and longitude, color temperature information of natural light according to latitude, longitude and time, and color temperature information of natural light according to weather; Including,
The first coordinate represents the first color temperature on the McAdam ellipse, the second coordinate represents the second color temperature on the McAdam ellipse,
The processor controls the duty ratio of the first LED and the second LED so that the coordinates on the Mcadam ellips represented by the light output from the light source is included in the predetermined path,
The color temperature of the light output by the light source is determined according to the duty ratio,
The color temperature of light output by the light source is determined according to at least one of a current time and a current position of the light source,
The preset route is (0.46, 0.41), (0.43, 0.40), (0.40, 0.38), (0.38, 0.37), (0.36, 0.35), (0.34, 0.35), (0.33, 0.34), (0.32, 0.33) and (0.31, 0.33) at least one of the XO, YO coordinate values, the coordinate values are values rounded to the third decimal place,
The light source is located in a tunnel, and the brightness of the light output by the light source is determined based on an expected direction of travel of the vehicle and information stored in the memory.
delete delete The method of claim 1,
(0.46, 0.41), (0.43, 0.40), (0.40, 0.38), (0.38, 0.37), (0.36, 0.35), (0.34, 0.35), (0.33, 0.34), (0.32, 0.33) and ( The color temperature of the XO and YO coordinate values of 0.31, 0.33) corresponds to 2700K, 3000K, 3500K, 4000K, 4500K, 5000K, 5500K, 6000K and 6500K, respectively.
The method of claim 1,
Wherein the first color temperature is 2700K and the second color temperature is 6500K.
delete delete delete The method of claim 1,
And a color temperature of light output by the light source is determined corresponding to a standard daylight color temperature of at least one of a current time and a current position of the light source.
The method of claim 1,
The luminaire further comprising a communication unit for receiving a control signal from the mobile terminal.

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