CN211240171U - Multi-primary-color light mixing device with continuously adjustable color temperature and brightness - Google Patents
Multi-primary-color light mixing device with continuously adjustable color temperature and brightness Download PDFInfo
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- CN211240171U CN211240171U CN202020042385.9U CN202020042385U CN211240171U CN 211240171 U CN211240171 U CN 211240171U CN 202020042385 U CN202020042385 U CN 202020042385U CN 211240171 U CN211240171 U CN 211240171U
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Abstract
The utility model discloses a multi-primary color mixing device with continuously adjustable color temperature and brightness, which comprises a light source light-emitting surface and a light source controller, wherein the light source light-emitting surface comprises a light source circuit board array, a diffusion plate and a shell box body, the diffusion plate is arranged on the shell box body, the light source circuit board array is arranged on one side of the diffusion plate, and primary color LED light sources are arranged on the light source circuit board array; one side of the case box body is provided with a light source controller, and a light source control mainboard is arranged on the light source controller. The utility model develops a LED light source device with stepless adjustable color temperature and brightness, which can simulate the continuous adjustable color temperature between 2300K to 20000K of sunlight and simultaneously realize the continuous adjustable brightness of 0 to 4000 Lux; the color temperature, the brightness, the color rendering index and the like are matched with the performance of an ISO standard light source, the requirements of standard lighting environments such as the imaging industry and the like can be met, and the method can be used for calibrating white balance indexes and the like.
Description
Technical Field
The utility model relates to a polybase color mixes the light field, concretely relates to many base colors of colour temperature and luminance continuously adjustable mix light device.
Background
Most of LED light sources in the current market belong to single color temperature light sources, and although the LED light sources with continuously adjustable brightness exist, continuous adjustable color temperature or stepless color temperature adjustment cannot be realized. Or a plurality of light sources with variable color and temperature are available, but the light sources are also limited to a plurality of fixed color temperatures of warm light or cold light series, and can be used for household illumination, and the requirements of the imaging industry and the like on indexes such as color temperature, brightness, color rendering index and the like of the light sources cannot be generally met.
At present, a mainstream LED lighting source mainly adopts a light emitting diode LED which uses a blue light chip to excite YAG fluorescent powder to generate cold white light and warm white light, the technology is mature and widely applied, but the mainstream LED lighting source has the defects of fixed color temperature, low color rendering property and the like. In order to meet the requirements of specific lighting occasions on high optical index light sources recently, in view of the performance advantages of LED light sources, an LED light mixing mode is used to realize mixed white light with adjustable brightness and color temperature, and the realization methods generally include two types: the LED color temperature adjusting device has the advantages that firstly, a two-primary-color LED light mixing mode is adopted, and color temperature adjustment is realized by adopting warm white light and cold white light LED color mixing; and secondly, mixing light of the multi-primary-color LED light source to realize the adjustability of color temperature and brightness. The color rendering index of the white light obtained by the former is not high, the color temperature adjusting range is limited between the color temperatures of the LED sources participating in light mixing, and the color temperature error is large; the luminous efficiency and the color rendering index of the mixed white light are influenced by the types of the light sources of the mixed primary light, and the color rendering index and the luminous efficiency are difficult to reach expected values by adopting the technology of mixing the RGB three-primary-color LED mixed white light. In order to improve the defects of the three-primary-color light mixing technology, a combination of RGB (red, green and blue) and W (warm white/cold white) is adopted, but the color temperature adjusting range is limited by the color temperature value of W, and the error of partial correlated color temperature is large. A theoretical calculation model of two primary colors or three primary colors has a unique solution, so that the color temperature adjusting range and the color temperature adjusting precision are limited, and visual matching of partial color temperature and black body color is difficult to realize. Therefore, LEDs with more than three primary colors are used for mixing light, so as to realize more accurate development of white light color mixing technology, and the technology is currently the mainstream development technology.
Disclosure of Invention
The utility model aims to solve the technical problem that a colour temperature and luminance continuously adjustable's many primary colors mix light device adopts the circuit board with primary color lamp pearl embedding, adopts the luminous intensity of each primary color of DC power supply control, can effectively get rid of the stroboscopic phenomenon that many primary colors mixed light, and the circuit board can be designed for the monoblock also can be designed for the combination of unit piece, easily the passageway extension, and the light source is photochromic stable, and the homogeneity is good, and light source device is frivolous, saves, environmental protection, longe-lived.
The utility model discloses a realize through following technical scheme: a multi-primary color light mixing device with continuously adjustable color temperature and brightness comprises a light source light emitting surface and a light source controller, wherein the light source light emitting surface comprises a light source circuit board array, a diffusion plate and a shell box body, the diffusion plate is arranged on the shell box body, the light source circuit board array is arranged on one side of the diffusion plate, and primary color LED light sources are arranged on the light source circuit board array; a light source controller is arranged on one side of the case body, and a light source control main board is arranged on the light source controller; the light source control mainboard is provided with a power supply control module, a first interface used for being connected with a PC computer and a second interface connected with the chromatic light measuring instrument, and the light source circuit board array is connected with the control mainboard and is controlled by the control mainboard; the light source control main board is connected with a direct current power supply, and the luminous intensity of the primary color LED light source is controlled through the direct current power supply.
As a preferred technical scheme, the housing box body is formed by assembling outer frames and a cover plate, the outer frames are connected with each other, the joint of two adjacent outer frames is provided with an assembly corner brace, the outer frames surround the diffusion plate, and the diffusion plate is arranged on the cover plate; a power supply mounting groove is formed in the outer casing body, and a power supply is mounted in the power supply mounting groove.
As the preferred technical scheme, the light source controller comprises a light source control box and a light source control cover plate, a mounting cavity is arranged in the light source control box, the light source control cover plate covers the mounting cavity, a light source control mainboard is arranged in the mounting cavity, and the power supply control module, the first interface and the second interface are all arranged on the control mainboard.
As the preferred technical scheme, the light source circuit board array is of an integrated structure or is formed by combining a plurality of unit blocks.
The utility model has the advantages that: 1. integrating a multi-primary-color light source in an integrated circuit board mode to realize direct current control of brightness coefficients of various colors; the light source has good stability and effectively eliminates the stroboscopic phenomenon; an ultra-thin design can be realized; the uniformity of the light source is good; 2. the circuit board is expandable, and the number of primary colors forming the light source is expandable; the modified value can be matched with an adaptive optical parameter measuring instrument to realize automatic correction, the stability is good, the automatic correction guarantees the use time sequence, the primary color light source is slightly attenuated in time, and parameters such as color temperature, brightness, color rendering index and the like can be ensured to be matched with an ISO standard light source; 3. the design is frivolous, and the heat that produces is little, environmental protection, noise are little, long service life.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is an exploded view of the present invention; fig. 2 is a flow chart of the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "the outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The use of terms herein such as "upper," "above," "lower," "below," and the like in describing relative spatial positions is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In the present invention, unless otherwise explicitly specified or limited, the terms "set", "coupled", "connected", "penetrating", "plugging", and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1, a multi-primary color mixing device with continuously adjustable color temperature and brightness comprises a light source light emitting surface and a light source controller, wherein the light source light emitting surface comprises a light source circuit board array 1, a diffusion plate 2 and a casing box body, the diffusion plate is arranged on the casing box body, the light source circuit board array 1 is arranged on one side of the diffusion plate 2, primary color LED light sources are arranged on the light source circuit board array 1, the light source circuit board array is arranged with primary color LED light sources (such as 6 primary colors, 4 visible light primary color lamp beads with 380nm-780nm, infrared primary colors of IR850nm and IR940nm, and the like), and the number of the primary colors can be expanded; a light source controller is arranged on one side of the case body, and a light source control main board is arranged on the light source controller; the light source control mainboard is provided with a power supply control module, a first interface used for being connected with a PC computer and a second interface connected with the chromatic light measuring instrument, and the light source circuit board array is connected with the control mainboard and is controlled by the control mainboard; the light source control main board is connected with a direct current power supply, and the luminous intensity of the primary color LED light source is controlled through the direct current power supply.
The casing box body is formed by assembling outer frames 3 (made of aluminum materials) and a cover plate 5, the outer frames 3 are connected with each other, assembling corner connectors 6 are arranged at the joints of the two adjacent outer frames 3, the outer frames surround the diffusion plate 2, and the diffusion plate 2 is arranged on the cover plate 5; a power supply mounting groove is formed in the outer casing body, and a power supply is mounted in the power supply mounting groove.
Wherein, the light source controller includes light source control box 7 and light source control apron 8, is equipped with the installation cavity in the light source control box 7, and light source control apron 8 covers the installation cavity, installs the light source control mainboard in the installation cavity, and power control module, first interface, second interface all set up on the control mainboard.
The light source circuit board array is of an integrated structure or is formed by combining a plurality of unit blocks, and channels are easy to expand.
The working principle is as follows: the utility model discloses a many primary colors LED light source technique of mixing light develops the colour temperature and the luminance continuously adjustable light source device of simulation sunlight. According to glasman's law: human vision can only distinguish brightness, hue and saturation change of colors; the color mixture follows the law of intermediate color, substitution law, complementary color law, and luminance addition law. The Glassman's law provides a theoretical basis for researching the adjustable algorithm of brightness and color temperature of mixed light of a multi-primary-color LED light source, and the tristimulus value of the color of the mixed light is equal to the sum of the tristimulus values of the color light of each primary color. Assuming that the brightness of the target light source after light mixing is La, the tristimulus values (Xa, Ya, Za), the brightness of the primary color 1 and the tristimulus values are L1, (X1, Y1, Z1) respectively; the luminance and tristimulus values of primary 2 are L2, (X2, Y2, Z2), respectively; the luminance and tristimulus values of primary color 3 are L3, (X3, Y3, Z3), respectively; … … the luminance and tristimulus values of the primary color n are Ln, (Xn, Yn, Zn), respectively.
According to a calculation formula of a chromaticity tristimulus value and a chromaticity coordinate, the chromaticity coordinate and the brightness value of the multi-primary color mixed white light source can be calculated. The general formula of the multi-primary color mixing algorithm can be expressed as: la = L1 + L2 + L3 + … … + LnXa = X1 + X2 + X3 + … … + XnYa = Y1 + Y2 + Y3 + … … + YnZa = Z1 + Z2 + Z3 + … … + Zn
According to the theory of mathematical equations, the formula has no fixed solution or infinite solution, but has an optimal solution under a limited condition. Therefore, the technical scheme defines the limiting conditions by taking the user as the center. In actual use, the user will first select a desired brightness value, color temperature value, etc. as a target value or a known value. The target brightness value is La. The color temperature value can be used for calculating the color coordinate value according to a related formula, and the tristimulus value of the target light source can be solved by combining the brightness value. The left end of the above formula is thus obtained. And then, solving the optimal solution required by a specific occasion under the limiting condition of the color rendering index Ra, the correlated color temperature accuracy delta T and the black body color error delta uv by adopting the optimization process shown in the figure 2.
The solving process is a cyclic correction process, the tristimulus values of the primary color light sources can be measured for the current values of a group of primary color light sources, the brightness, the tristimulus and the spectral curve of the mixed color can be calculated or measured, and the spectral curve is used for calculating the color index, the color coordinate, the color difference delta uv and the like of the mixed color and the color difference delta uv of the same-color temperature black body; the target value is circularly and gradually approached, the current value of each primary color channel is stored and solidified after the target value is reached, and any commonly used color temperature can be solidified repeatedly in the way, so that the selection and the use in engineering are facilitated.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (4)
1. A multi-primary color light mixing device with continuously adjustable color temperature and brightness is characterized in that: the LED light source comprises a light source light-emitting surface and a light source controller, wherein the light source light-emitting surface comprises a light source circuit board array, a diffusion plate and a shell box body, the diffusion plate is arranged on the shell box body, the light source circuit board array is arranged on one side of the diffusion plate, and primary LED light sources are arranged on the light source circuit board array; a light source controller is arranged on one side of the case body, and a light source control main board is arranged on the light source controller; the light source control mainboard is provided with a power supply control module, a first interface used for being connected with a PC computer and a second interface connected with the chromatic light measuring instrument, and the light source circuit board array is connected with the control mainboard and is controlled by the control mainboard; the light source control main board is connected with a direct current power supply, and the luminous intensity of the primary color LED light source is controlled through the direct current power supply.
2. The multi-primary-color light mixing device with continuously adjustable color temperature and brightness according to claim 1, characterized in that: the casing box body is formed by assembling outer frames and a cover plate, the outer frames are connected with each other, an assembly corner connector is arranged at the joint of two adjacent outer frames, the outer frames surround the diffusion plate, and the diffusion plate is arranged on the cover plate; a power supply mounting groove is formed in the outer casing body, and a power supply is mounted in the power supply mounting groove.
3. The multi-primary-color light mixing device with continuously adjustable color temperature and brightness according to claim 1, characterized in that: the light source controller comprises a light source control box and a light source control cover plate, a mounting cavity is arranged in the light source control box, the light source control cover plate covers the mounting cavity, a light source control main board is installed in the mounting cavity, and a power supply control module, a first interface and a second interface are all arranged on the control main board.
4. The multi-primary-color light mixing device with continuously adjustable color temperature and brightness according to claim 1, characterized in that: the light source circuit board array is of an integrated structure or a combination of a plurality of unit blocks.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020042385.9U CN211240171U (en) | 2020-01-09 | 2020-01-09 | Multi-primary-color light mixing device with continuously adjustable color temperature and brightness |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020042385.9U CN211240171U (en) | 2020-01-09 | 2020-01-09 | Multi-primary-color light mixing device with continuously adjustable color temperature and brightness |
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| CN211240171U true CN211240171U (en) | 2020-08-11 |
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| CN202020042385.9U Active CN211240171U (en) | 2020-01-09 | 2020-01-09 | Multi-primary-color light mixing device with continuously adjustable color temperature and brightness |
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