A black body curve coordinate light source

Abstract

The utility model discloses a kind of blackbody curve coordinate light sources, comprising: controller and light source equipment, five groups of LED lamp beads and a monitoring module are arranged in the light source equipment, the controller is electrically connected with the light source equipment, for receiving the data of the monitoring module and adjusting the parameter of five groups of the LED lamp beads so that it is mixed into blackbody coordinate.

Description

Technical Field

[0001] This disclosure relates to the field of light source equipment technology, and in particular to a blackbody curve coordinate light source. Background Technology

[0002] There exists a blackbody radiation trajectory (Planck trajectory) on the CIE1931 chromaticity diagram. The chromaticity coordinates (x, y) of the blackbody's emission at different temperatures fall precisely on this curve. The blackbody radiation curve is essentially the physical definition of "ideal white light" at different temperatures. Therefore, using the color temperature coordinates on the blackbody trajectory as a light source means that the light emitted by this light source is closest to the real "white light" in nature in terms of color characteristics.

[0003] During the burning stage, the camera uses light from a blackbody curve coordinate light source as calibration light and uses algorithms for compensation and correction, which can achieve consistent color accuracy calibration (especially white balance) and color reproduction.

[0004] The current blackbody curve coordinate light source obtains the light of the blackbody curve coordinate by mixing three sets of LED beads. The light obtained by mixing three sets of LED beads has the following disadvantages: First, there is only one mixing scheme; second, the three sets of LED beads need to be lit for a long time, resulting in a short lifespan. Utility Model Content

[0005] This disclosure provides a blackbody curve coordinate light source to solve the above-mentioned technical problems.

[0006] This disclosure provides a blackbody curve coordinate light source, including: a controller and a light source device. The light source device is provided with five sets of LED beads and a monitoring module. The controller is electrically connected to the light source device and is used to receive data from the monitoring module and adjust the parameters of the five sets of LED beads to mix them into blackbody coordinates.

[0007] Preferably, the five groups of LED beads are respectively a first channel LED bead, a second channel LED bead, a third channel LED bead, a fourth channel LED bead, and a fifth channel LED bead, wherein, The color coordinates of the first channel LED are: 0.4678±0.03, 0.4016±0.03; The color coordinates of the second channel LED are: 0.3113±0.03, 0.3092±0.03; The color coordinates of the third channel LED are: 0.3090±0.03, 0.3051±0.03; The color coordinates of the fourth channel LED are: 0.3355±0.03, 0.5382±0.03; The color coordinates of the fifth channel LED are: 0.5173±0.03, 0.4166±0.03.

[0008] Preferably, the light source device includes a base, a reflective film is provided at the bottom of the base, a plurality of programmable LED light boards are provided on the inner sidewall of the base, five sets of LED beads are integrated into the programmable LED light boards, the base is covered with a top cover, the monitoring module includes a monitoring probe and a monitoring control board, the monitoring probe is disposed between the base and the top cover, the monitoring control board is disposed at the bottom of the base and is closed by the cover plate, and the monitoring control board is electrically connected to the monitoring probe.

[0009] Preferably, a light guide plate is provided inside the base, and / or the height of the light guide plate is the same as the height of the programmable LED light board.

[0010] Preferably, a diffuser plate is embedded in the center of the upper cover.

[0011] Preferably, positioning posts are provided around the interior of the base, and the four corners of the reflective film and the light guide plate are positioned by the positioning posts.

[0012] Preferably, the base has a positioning groove on the side corresponding to the programmable LED light board, and the programmable LED light board has a center line in the middle, the position of which corresponds to the positioning groove.

[0013] Preferably, a plurality of heat sinks are fixedly provided at the bottom of the base.

[0014] Preferably, the controller includes a power interface, a light source power supply interface, control buttons, and a digital display panel on its surface. The controller internally includes a switching power supply module, a control and display integrated board, and a constant current drive circuit board. The power interface is used to connect an external power cord. The light source power supply interface is connected to the light source device via a wire. The control and display integrated board is connected to the control buttons and the digital display panel respectively. The constant current drive circuit board is used to drive the five groups of LED beads.

[0015] Preferably, the controller further includes an RS232 interface, which is used to connect to a PC for data interaction.

[0016] The main beneficial effects of this disclosure are: 1. This utility model uses 5 sets of LED beads. Compared with the traditional 3 sets of LED beads, each blackbody coordinate has more mixing schemes. The scheme with the smallest deviation from the blackbody coordinate can be selected, resulting in greater selectivity and smaller error. 2. This utility model uses 5 sets of LED beads, and only 3 sets of LED beads need to be activated each time it works. Compared with the traditional 3 sets of LED beads, this intermittent use method makes the lifespan of the LED beads longer than when they are lit for a long time, thereby extending the lifespan of the overall light source and making it more stable. 3. This utility model has a built-in monitoring module that can monitor changes in light source parameters in real time, so as to make adjustments or issue early warnings, prevent the production of defective products due to changes in light source parameters, and improve product yield. 4. The blackbody coordinate light source uses 5 sets of LED beads and is not limited to mixing into blackbody coordinates. It is also compatible with other commonly used light sources on the market, making one light source more versatile and more cost-effective.

[0017] It should be understood that both the foregoing general description and the following detailed description are for illustrative purposes and do not necessarily limit the scope of this disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of this disclosure. Furthermore, the specification and drawings serve to explain the principles of this disclosure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments of this disclosure or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the blackbody curve coordinate light source according to an embodiment of the present disclosure; Figure 2 This is a schematic diagram of the structure of the light source device according to an embodiment of the present disclosure; Figure 3 This is an exploded view of the structure of the light source device according to an embodiment of this disclosure; Figure 4 This is a coordinate diagram of LED beads according to an embodiment of the present disclosure; Figure 5 This is a coordinate diagram of the LED beads in one embodiment; Figure 6 This is a coordinate diagram of the LED beads in another embodiment; Figure 7 This is a spectrum of the mixed light 1 according to an embodiment of the present disclosure; Figure 8 This is a spectrum of the mixed light 2 according to an embodiment of the present disclosure; Figure 9 This is a spectrum of the mixed light 3 according to an embodiment of the present disclosure; Figure 10This is a spectrum of the mixed light 4 according to an embodiment of the present disclosure; Figure 11 This is a spectrum of the mixed light 5 according to an embodiment of the present disclosure; Figure 12 This is a spectrum of the mixed light 6 according to an embodiment of the present disclosure; Figure 13 This is a schematic diagram illustrating the working principle of an embodiment of this disclosure; Icons: 100-Controller; 200-Light source device; 300-PC terminal; 1-Light source cover; 2-Monitoring probe; 3-Light guide plate; 4-Programmable LED light board; 5-Reflective film; 6-Positioning post; 7-Positioning groove; 8-Monitoring control board; 9-Small cover plate; 10-Diffuser plate; 11-LED lamp beads; 12-Base; 15-Heat sink. Detailed Implementation

[0020] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments.

[0021] Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0022] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0024] Example like Figure 1-3As shown, this embodiment provides a blackbody curve coordinate light source, including: a controller 100 and a light source device 200. The light source device 200 is provided with five sets of LED beads 11 and a monitoring module. The controller 100 is electrically connected to the light source device 200 and is used to receive data from the monitoring module and adjust the parameters of the five sets of LED beads 11 to mix them into blackbody curve coordinate light.

[0025] In one embodiment, the five groups of LED beads 11 are respectively a first channel bead, a second channel bead, a third channel bead, a fourth channel bead, and a fifth channel bead, wherein, The color coordinates of the first channel LED are: 0.4678±0.03, 0.4016±0.03; The color coordinates of the second channel LED are: 0.3113±0.03, 0.3092±0.03; The color coordinates of the third channel LED are: 0.3090±0.03, 0.3051±0.03; The color coordinates of the fourth channel LED are: 0.3355±0.03, 0.5382±0.03; The color coordinates of the fifth channel LED are: 0.5173±0.03, 0.4166±0.03.

[0026] like Figure 4 As shown, five groups of LED beads 11 are used. The coordinate region formed by the coordinates of these five groups of LED beads 11 can cover the blackbody radiation curve from 2300K to 6500K. The coordinates of the five groups of LED beads 11 are not fixed; as long as the coordinate region they form covers the blackbody radiation curve from 2300K to 6500K, the light at the blackbody curve coordinates can be obtained by adjusting the ratio of three of the five groups of LED beads 11. Furthermore, if the coordinates of the selected five groups of LED beads 11 are too far from the blackbody curve, mixing and adjustment will be difficult, and mixing may even fail. Experimental verification finally yielded the coordinates of the aforementioned five groups of LED beads 11.

[0027] In one embodiment, the LED beads 11 inside the light source are configured such that the color coordinates of the first channel bead are (0.4692, 0.4024), the color coordinates of the second channel bead are (0.3120, 0.3102), the color coordinates of the third channel bead are (0.3096, 0.3058), the color coordinates of the fourth channel bead are (0.3367, 0.5400), and the color coordinates of the fifth channel bead are (0.5179, 0.4164). By selecting three groups of LED beads 11, any coordinate on the 2300K-6500K blackbody curve can be generated.

[0028] The light from five groups of 11 LED beads, calibrated to 1000 LUX illuminance, is as follows: The color coordinates of the mixed light 1 are (0.4958, 0.4152), which is composed of the first channel LED with a brightness level of 804, the fourth channel LED with a brightness level of 982, and the fifth channel LED with a brightness level of 1259. The brightness level of the remaining channel LEDs is 0. The color coordinates of Mixed Light 2 are (0.4256, 0.3995), and it is composed of a first channel LED with a brightness level of 1395, a second channel LED with a brightness level of 370, and a fourth channel LED with a brightness level of 828. The brightness level of the remaining channel LEDs is 0. The color coordinates of the mixed light 3 are (0.3759, 0.3742), which is composed of the first channel LED with a brightness level of 874, the third channel LED with a brightness level of 841, and the fourth channel LED with a brightness level of 1046. The brightness level of the remaining channel LEDs is 0. The color coordinates of the mixed light 4 are (0.3381, 0.3470), which is composed of the first channel LED with a brightness level of 418, the second channel LED with a brightness level of 1398, and the fourth channel LED with a brightness level of 883. The brightness level of the remaining channel LEDs is 0. The color coordinates of the mixed light 5 are (0.3219, 0.3319), which is composed of the first channel LED with a brightness level of 231, the third channel LED with a brightness level of 1586, and the fourth channel LED with a brightness level of 796. The brightness level of the remaining channel LEDs is 0. The color coordinates of the mixed light 6 are (0.3128, 0.3232). It is composed of the first channel LED with a brightness level of 259, the third channel LED with a brightness level of 1723, and the fourth channel LED with a brightness level of 774. The brightness level of the remaining channel LEDs is 0.

[0029] like Figure 5 As shown, the color coordinates of the six sets of mixed light are placed on the coordinate graph and represented by small black triangles. It can be seen that the color coordinates of the six sets of mixed light fall on the blackbody radiation coordinate curve.

[0030] In another embodiment, LED beads 11 are set inside the light source. The color coordinates of the first channel bead are (0.4678, 0.4016), the second channel bead is (0.3113, 0.3092), the third channel bead is (0.3090, 0.3051), the fourth channel bead is (0.3355, 0.5382), and the fifth channel bead is (0.5173, 0.4166). By selecting three groups of LED beads 11, any coordinate on the 2300K-6500K blackbody curve can be generated.

[0031] Calibrate to 1000 Lux illuminance and mix 6 light sources as follows: The color coordinates of the mixed light 1 are (0.4533, 0.4096), which is composed of the first channel LED with a brightness level of 762, the fourth channel LED with a brightness level of 995, and the fifth channel LED with a brightness level of 1226. The brightness level of the remaining channel LEDs is 0. The color coordinates of Mixed Light 2 are (0.4258, 0.3999), and it is composed of a first channel LED with a brightness level of 1398, a second channel LED with a brightness level of 387, and a fourth channel LED with a brightness level of 845. The brightness level of the remaining channel LEDs is 0. The color coordinates of the mixed light 3 are (0.3760, 0.3743), which is composed of the first channel LED with a brightness level of 866, the third channel LED with a brightness level of 879, and the fourth channel LED with a brightness level of 1057. The brightness level of the remaining channel LEDs is 0. The color coordinates of the mixed light 4 are (0.3377, 0.3460), which is composed of the first channel LED with a brightness level of 415, the second channel LED with a brightness level of 1429, and the fourth channel LED with a brightness level of 883. The brightness level of the remaining channel LEDs is 0. The color coordinates of the mixed light 5 are (0.3215, 0.3317), which is composed of the first channel LED with a brightness level of 226, the third channel LED with a brightness level of 1634, and the fourth channel LED with a brightness level of 806. The brightness level of the remaining channel LEDs is 0. The color coordinates of the mixed light 6 are (0.3132, 0.3240). It is composed of a first channel LED with a brightness level of 268, a third channel LED with a brightness level of 1712, and a fourth channel LED with a brightness level of 762. The brightness level of the remaining channels LEDs is 0.

[0032] like Figure 6 As shown, the color coordinates of the six sets of mixed light are placed on the coordinate graph and represented by small black triangles. It can be seen that the color coordinates of the six sets of mixed light fall on the blackbody radiation coordinate curve.

[0033] like Figure 7-12 As shown, Figure 7-12 These are the spectra of mixed light 1-6.

[0034] In one embodiment, the light source device 200 includes a base 12, a reflective film 5 is provided at the bottom of the base 12, and multiple programmable LED light boards 4 are provided on the inner sidewall of the base 12. Five sets of LED beads 11 are integrated into the programmable LED light boards 4. The base 12 is covered with a light source cover 1. The monitoring module includes a monitoring probe 2 and a monitoring control board 8. The monitoring probe 2 is disposed between the base 12 and the light source cover 1. The monitoring control board 8 is disposed at the bottom of the base 12 and is closed by a small cover plate 9. The monitoring control board 8 is electrically connected to the monitoring probe 2. In this embodiment, the base 12 is an integrated structure, formed by a base plate and four sides. Both the base 12 and the light source cover 1 are made of aluminum material with good thermal conductivity. The light source cover 1 is locked to the base 12 by bolts. The programmable LED light board 4 is attached to the four internal side walls of the base 12 with thermally conductive adhesive with high thermal conductivity. The programmable LED light board 4 is an LED light board with adjustable parameters that can be programmed in the prior art. The programmable LED light board 4 integrates five groups of LED beads 11. Each group of LED beads 11 consists of multiple beads. During operation, the controller 100 controls three groups of LED beads 11 to emit light. The light generated by the mixture of the three groups of LED beads 11 is emitted through the opening of the light source cover 1. The light parameters are monitored by the monitoring probe 2 and the monitoring data is sent to the monitoring control board 8. The monitoring control board 8 sends the data to the controller 100. The PC terminal 300 connected to the controller 100 can automatically adjust the parameters of the LED beads 11 to ensure the best light effect. In addition, during the light emission process, the bottom reflective film 5 can reflect the light outward to improve brightness and save energy.

[0035] Furthermore, a light guide plate 3 is provided inside the base 12, and / or the height of the light guide plate 3 is the same as the height of the programmable LED light board 4. The function of the light guide plate 3 is to conduct the light emitted by the LED beads 11 on the side programmable LED light board 4 to the surface of the light source.

[0036] Furthermore, positioning posts 6 are respectively set around the inside of the base 12, and the four corners of the reflective film 5 and the light guide plate 3 are positioned by the positioning posts 6. There are 4 positioning posts 6 inside the base 12. The reflective film 5 and the light guide plate 3 are placed in sequence within the area defined by the 4 positioning posts 6, so as to prevent the reflective film 5 and the light guide plate 3 from shifting inside the base 12 and affecting the light source parameters.

[0037] Furthermore, the base 12 has positioning grooves 7 on the sides corresponding to the programmable LED light board 4, and a center line is provided in the middle of the programmable LED light board 4, with the center line corresponding to the positioning grooves 7. The programmable LED light board 4 has a center line, which is aligned with the positioning grooves 7 on the four sides of the aluminum structure base 12 during installation, ensuring that the programmable LED light board 4 is installed accurately and without deviation.

[0038] Furthermore, several heat sinks 15 are fixedly mounted on the bottom of the base 12. The heat sinks 15 and the base 12 are integrally formed to improve heat dissipation efficiency.

[0039] In one embodiment, the surface of the controller 100 is provided with a power interface, a light source power supply interface, control buttons and a digital display panel. The controller 100 is internally provided with a switching power supply module, a control and display integrated board and a constant current drive circuit board. The power interface is used to connect an external power supply line. The light source power supply interface is connected to the light source device 200 through a wire. The control and display integrated board is connected to the control buttons and the digital display panel respectively. The constant current drive circuit board is used to drive the five groups of LED beads 11 to work.

[0040] In this embodiment, the switching power supply module includes an AC / DC circuit module, which converts the AC220V AC mains power into DC24V DC power to supply the control and display integrated board, the constant current drive circuit board, and the programmable LED board 4 inside the light source. The control and display integrated board includes a DC / DC circuit, a microprocessor, a microprocessor support circuit, an RS232 communication circuit, and an RS485 communication circuit, with the digital display panel and control buttons integrated on the control and display integrated board. The DC / DC circuit converts DC24V to DC5V to power the RS232 and RS485 communication circuits, and converts DC5V to DC3.3V to power the microprocessor support circuit and the digital display panel. The microprocessor is STMicroelectronics' STM32 F-series high-performance microprocessor, which has low power consumption, a main frequency of over 180MHz, and can efficiently execute complex algorithms. It is a 32-bit microprocessor, with performance far exceeding that of traditional 8-bit microprocessors. The microprocessor support circuit provides a stable DC3.3V power supply voltage to filter out high-frequency noise and provides a high-precision time base to ensure that instructions are executed according to the predetermined timing.

[0041] The RS232 communication circuit module converts digital signals into analog voltage signals for transmission, specifically converting the TTL level signal generated by the microprocessor into an RS232 level signal for computer recognition. The RS485 communication circuit is used to communicate with the monitoring module, transmitting parameters sent by the monitoring module to the microprocessor. The microprocessor then categorizes and archives the parameters before transmitting them to the PC 300 via RS232 communication for display on the software. The digital display panel shows key parameters such as channel, color temperature, and illuminance. Control buttons allow setting channels, color temperature, and parameters. Although the displayed content is less extensive than in the PC software, it provides a relatively intuitive view of the light source's main parameters when a computer is unavailable. Similarly, while the control buttons offer fewer options than the PC software, they still allow for control of the light source by setting channels, color temperature, and parameters even without a computer.

[0042] The driver board includes a DC / DC circuit and a driver circuit. The DC / DC circuit converts DC 24V to 12V to power the precision operational amplifier in the driver circuit. The precision operational amplifier uses a high-precision, low-power chip such as the OP07C or OPx177 series with extremely low offset voltage. The driver board's PWM interface receives the PWM signal from the main control board. The PWM signal is a high-frequency square wave signal that is much higher than what the human eye can perceive. It is converted into the PWM DC reference voltage VPWM required by the precision operational amplifier in the driver circuit through the low-pass filter. The PWM DC reference voltage VPWM is then connected to the non-inverting input port of the precision operational amplifier. A low-resistance, high-precision power resistor R (called the current-sensing resistor) is connected in series between one end of the LED circuit and the ground terminal. The sensed voltage VR formed by the current flowing through the LED circuit into the current-sensing resistor is connected to the inverting input port of a precision operational amplifier. The precision operational amplifier amplifies and compares the voltage difference between the non-inverting and inverting input terminals, outputting a comparison voltage to the gate of a MOSFET. The MOSFET is an N-channel MOSFET IRLR3110 with low internal resistance of 14mΩ, high withstand voltage of 100V, and high continuous drain current of 63A. When the sensed voltage VR is lower than the PWM DC reference voltage VPWM, it indicates that the current in the LED circuit is less than the target current. The output voltage of the precision operational amplifier increases, deepening the conduction of the MOSFET and allowing a larger current to flow through the LED circuit and the current-sensing resistor R. When the sensed voltage VR is greater than the PWM DC reference voltage VPWM, it indicates that the current in the LED circuit is greater than the target current. The output of the precision operational amplifier decreases, weakening the conduction of the MOSFET and reducing the current flowing through the LED circuit and the current-sensing resistor R. These two feedback adjustments form a continuous, high-speed closed-loop process. The precision operational amplifier continuously adjusts the MOSFET's conduction state, making the detection voltage VR infinitely close to the PWM DC reference voltage VPWM, achieving a VR=VPWM equilibrium state. The current flowing through the LED circuit is ILED=VR / R=VPWM / R. The current sensing resistor R is constant. After the PWM signal is set to a constant value, the DC reference voltage VPWM is also constant. Therefore, the current ILED flowing through the LED circuit is also constant. This is the principle of the constant current drive circuit. By setting a specific PWM value, the current flowing through the corresponding channel of the driven circuit can be controlled to be constant at ILED=VPWM / R. Thus, the brightness of the corresponding channel LED is also constant. By setting different PWM values ​​for different channels, the brightness of different channel LED beads 11 can be controlled, thereby controlling the brightness, color temperature, spectrum, and other parameters of the programmable LED board 4 with multiple LED circuits. This is the principle of the programmable LED board 4.

[0043] Furthermore, the controller 100 also includes an RS232 interface, which is used to connect to the PC 300 for data interaction and control via the software on the PC 300, which is more convenient than control via buttons.

[0044] The working principle of this utility model is as follows: Figure 13 As shown, data interaction occurs between the PC terminal 300 and the controller 100. The controller 100 controls the operation of LED beads 11 in different channels. The light emitted by the LED beads 11 passes through optical materials such as the reflective film 5, the light guide plate 3, and the diffuser plate 10 to form the desired mixed light. Furthermore, the parameters of the mixed light can be detected by the monitoring probe 2 of the monitoring module or by an external detection instrument, and the parameters are fed back to the controller 100. Finally, the controller 100 interacts with the PC terminal 300 to achieve dynamic adjustment.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A blackbody curvilinear coordinate light source, characterized in that, include: The controller and the light source device are provided. The light source device is equipped with five sets of LED beads and a monitoring module. The controller is electrically connected to the light source device and is used to receive data from the monitoring module and adjust the parameters of the five sets of LED beads to mix them into blackbody coordinates.

2. The blackbody curve coordinate light source according to claim 1, characterized in that, The five groups of LED beads are respectively channel 1, channel 2, channel 3, channel 4, and channel 5, wherein, The color coordinates of the first channel LED are: 0.4678±0.03, 0.4016±0.03; The color coordinates of the second channel LED are: 0.3113±0.03, 0.3092±0.03; The color coordinates of the third channel LED are: 0.3090±0.03, 0.3051±0.03; The color coordinates of the fourth channel LED are: 0.3355±0.03, 0.5382±0.03; The color coordinates of the fifth channel LED are: 0.5173±0.03, 0.4166±0.

03.

3. A blackbody curve coordinate light source according to claim 2, characterized in that, The light source device includes a base, a reflective film at the bottom of the base, and multiple programmable LED light boards on the inner sidewall of the base. Five sets of LED beads are integrated into the programmable LED light boards. The base is covered with a top cover. The monitoring module includes a monitoring probe and a monitoring control board. The monitoring probe is located between the base and the top cover. The monitoring control board is located at the bottom of the base and is closed by the cover plate. The monitoring control board is electrically connected to the monitoring probe.

4. A blackbody curve coordinate light source according to claim 3, characterized in that, The base is provided with a light guide plate, and / or the height of the light guide plate is the same as the height of the programmable LED light board.

5. A blackbody curve coordinate light source according to claim 3, characterized in that, A diffuser plate is embedded in the center of the top cover.

6. A blackbody curve coordinate light source according to claim 4, characterized in that, Positioning posts are provided around the inside of the base, and the four corners of the reflective film and the light guide plate are positioned by the positioning posts.

7. A blackbody curve coordinate light source according to claim 3, characterized in that, The base has a positioning groove on the side corresponding to the programmable LED light board, and a center line is provided in the middle of the programmable LED light board, the position of which corresponds to the positioning groove.

8. A blackbody curve coordinate light source according to claim 3, characterized in that, Several heat sinks are fixed to the bottom of the base.

9. A blackbody curve coordinate light source according to any one of claims 1-8, characterized in that, The controller includes a power interface, a light source power supply interface, control buttons, and a digital display panel on its surface. The controller also includes a switching power supply module, a control and display integrated board, and a constant current drive circuit board. The power interface is used to connect an external power cord. The light source power supply interface is connected to the light source device via a wire. The control and display integrated board is connected to the control buttons and the digital display panel. The constant current drive circuit board is used to drive the five groups of LED beads.

10. A blackbody curve coordinate light source according to claim 9, characterized in that, The controller also includes an RS232 interface, which is used to connect to a PC for data interaction.

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