CN108024410B - Calibration method of full-color LED lighting fixtures - Google Patents
Calibration method of full-color LED lighting fixtures Download PDFInfo
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- CN108024410B CN108024410B CN201610948725.2A CN201610948725A CN108024410B CN 108024410 B CN108024410 B CN 108024410B CN 201610948725 A CN201610948725 A CN 201610948725A CN 108024410 B CN108024410 B CN 108024410B
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- 238000005286 illumination Methods 0.000 description 10
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- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- AJGDITRVXRPLBY-UHFFFAOYSA-N aluminum indium Chemical compound [Al].[In] AJGDITRVXRPLBY-UHFFFAOYSA-N 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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
本发明公开了一种全彩LED照明灯具的校正方法以及使用该校正方法校正过的全彩LED照明灯具，该校正方法包括以下步骤：提供一全彩LED照明灯具，向该全彩LED照明灯具输入一控制信号后能够输出红光波长为RX、绿光波长为GY及蓝光波长为BZ的亮光，且该全彩LED照明灯具属于RGB色彩空间；提供使用标准色彩空间的一转换参数，以将RX、GY、BZ对应标准色彩空间进行矩阵转换，并获得一标准色彩矩阵数值；使用该标准色彩矩阵数值进行线性转换及色差校正等运算后，获得一正规化系数C；使用该正规化系数C对输入该全彩LED照明灯具的一控制信号进行正规化处理，使该全彩LED照明灯具使用时的亮度及颜色能够符合标准色彩空间的要求。
The invention discloses a calibration method for a full-color LED lighting fixture and a full-color LED lighting fixture calibrated by the calibration method. The calibration method comprises the following steps: providing a full-color LED lighting fixture, which can output bright light with a red light wavelength of RX , a green light wavelength of KY and a blue light wavelength of BB after inputting a control signal to the full-color LED lighting fixture, and the full-color LED lighting fixture belongs to an RGB color space; providing a conversion parameter using a standard color space to perform matrix conversion on RX , KY and BB corresponding to the standard color space, and obtain a standard color matrix value; using the standard color matrix value to perform linear conversion and color difference correction operations, and obtain a normalization coefficient C; using the normalization coefficient C to perform normalization processing on a control signal input to the full-color LED lighting fixture, so that the brightness and color of the full-color LED lighting fixture when in use can meet the requirements of the standard color space.
Description
Technical Field
The invention relates to the field of lighting lamps, in particular to a correction method of a full-color LED lighting lamp, which utilizes a standard color space of lighting to calculate with an RGB color space of an RGB type LED so as to correct the bright light which best meets the lighting requirement.
Background
Under the scientific and technological requirements of energy saving and carbon reduction and the policy that the governments of various countries continuously disable incandescent bulbs, and the advantages of high efficiency, energy saving, power saving and adjustable optical rotation of Light Emitting Diodes (LEDs), the light emitting diodes are widely applied to the illumination requirements of street lamps, car lamps, outdoor illumination, ambient illumination and the like in recent years, and the traditional illumination mode is gradually replaced. The brightness adjusting device, which is also often seen in the conventional illumination field, provides a voltage according to the conduction condition of the dimmer to adjust the light emitting effect of the light emitting element (such as a halogen lamp, a tungsten lamp, etc.) of the trimming resistive illumination device, thereby achieving the purpose of facilitating the user to adjust the illumination brightness.
The light-emitting diode is characterized in that: the method has the advantages of no need of lamp warming time (idle time), high reaction speed (about 10-9 seconds), small volume, electricity saving, shock resistance, low pollution, suitability for mass production, high reliability and easiness in being matched with the application requirements to manufacture a tiny or array-type element. After the 70 s commercialized, the led rapidly developed towards multi-color, high brightness and high luminous efficiency, and further developed gallium arsenide phosphide (GaAsP) high brightness red led and aluminum gallium arsenide (AlGaAs) green led, aluminum indium gallium phosphide (AlGaInP) high brightness red, orange led and indium gallium nitride (GaInN) blue and green led. The purpose of the light emitting diode is gradually developed to the general illumination field from early warning and advertising, and particularly after the high-brightness blue light emitting diode is put into practical use, the development of the white light emitting diode illumination light source is well paid attention to countries in Europe and America. With the practical application of High-Brightness light emitting diodes, from the perspective of applications and energy conservation, the improvement of low cost, High efficiency, reliability and High Brightness will be the main direction of future development of light emitting diodes, and the application fields of High Brightness Light Emitting Diodes (HBLEDs) are not only various displays and traffic marker lights, but also mobile phone screen colorization, mobile phone flash lamps, lighting, Liquid Crystal Display (LCD) backlight sources and automobile markets are rising.
Therefore, a full-color LED lighting device that truly meets the lighting requirements is a trend, and the future evaluation of the lighting source not only focuses on the light efficiency category, but also must take into account the lighting effect, the light comfort, the light biological effect, the light safety, and so on, so that the most appropriate lighting color space must be corrected to avoid the damage of the unsuitable light to the user.
Disclosure of Invention
In view of the above, an objective of the present invention is to provide a method for calibrating a full-color LED lighting fixture, which utilizes a color display screen disposed on a remote controller to synchronously adjust a full-color LED lighting fixture, so as to achieve the purpose of accurately adjusting the color of the light through the remote controller.
In order to achieve the above object, the present invention provides a method for calibrating a full-color LED lighting device, comprising the steps of: providing a full-color LED lighting lamp, and outputting red light with a wavelength of R by the full-color LED lighting lamp after inputting a control signal to the full-color LED lighting lampXGreen light with a wavelength of GYAnd blue light having a wavelength of BZThe full-color LED lighting lamp belongs to an RGB color space; providing a conversion parameter using a standard color space to convert RX、GY、BZPerforming matrix conversion corresponding to the standard color space and obtaining a standard color matrix value; using the standard color matrix value to perform linear conversion, chromatic aberration correction and other operations to obtain a normalization coefficient C; the normalization coefficient C is used for normalizing a control signal input into the full-color LED illuminating lamp, so that the brightness and the color of the full-color LED illuminating lamp can be realized when the full-color LED illuminating lamp is usedMeets the requirements of standard color space.
In an embodiment, the method for calibrating a full-color LED lighting device further includes a step of calibrating and outputting, and the step of re-lighting the full-color LED lighting device by using the normalized control signal, and re-measuring whether the lighting color and brightness of the full-color LED lighting device meet the standard of the standard color space, so as to further confirm the calibration effect and avoid errors.
Another objective of the present invention is to provide a full-color LED lighting device using the above calibration method, which can adjust the color and brightness of the lighting light required in different situations, greatly improve the acceptance of human eyes, and reduce the harm of the traditional LED light source to human eyes.
In order to achieve the above object, the present invention provides a full-color LED lighting device comprising: a base; the LED luminous sources are arranged on one surface of the base at intervals in a matrix distribution mode; the control circuit board is arranged on one side of the base and is respectively electrically connected with the plurality of LED luminous sources, and the control circuit board is electrically connected with an external power source so as to input a driving power and the control signal.
In one embodiment, each of the LED light sources is an RGB LED. The full-color LED illuminating lamp also comprises an adjuster which is electrically connected with the control circuit board to adjust the color output of each RGB type LED so that the full-color LED illuminating lamp emits the bright light with the required color temperature. The adjuster is provided with a remote controller, the adjuster is provided with a first wireless receiving and sending unit, the remote controller is provided with a second wireless receiving and sending unit, and the adjuster can be remotely controlled in a wireless mode through the remote controller.
Drawings
FIG. 1 is a flowchart illustrating steps of a preferred embodiment of the present invention;
FIG. 2 is a hardware block diagram of the preferred embodiment of the present invention.
Description of reference numerals: S1-S5-step; 1-full color LED lighting fixtures; 11-a base; 111-an accommodating space; 12-a LED light emitting source; 13-a control circuit board; 14-a regulator; 141-a first radio unit; 15-a remote controller; 151-second radio transceiver unit.
Detailed Description
For the examiner to clearly understand the contents of the present invention, reference is made only to the following description together with the drawings.
The invention provides a correction method of a full-color LED illuminating lamp, which is used for correcting the full-color illuminating lamp when the full-color illuminating lamp leaves a factory so as to adjust the color or brightness of the full-color illuminating lamp when the full-color illuminating lamp is used in the future to meet the illuminating requirement, and comprises the following steps:
s1: providing a full-color LED lighting lamp, and outputting red light with a wavelength of R by the full-color LED lighting lamp after inputting a control signal to the full-color LED lighting lampXGreen light with a wavelength of GYAnd blue light having a wavelength of BZAnd the full-color LED lighting lamp belongs to an RGB color space.
S2: providing a conversion parameter using a standard color space to convert RX、GY、BZAnd performing matrix conversion corresponding to the standard color space, and obtaining a standard color matrix value.
S3: after the standard color matrix value is used for linear conversion, chromatic aberration correction and other operations, a normalization coefficient C is obtained.
S4: the normalization coefficient C is used for normalizing a control signal input into the full-color LED illuminating lamp, so that the brightness and the color of the full-color LED illuminating lamp can meet the requirements of a standard color space when in use.
S5: and outputting the corrected control signal, relighting the full-color LED lighting lamp by using the normalized control signal, and re-measuring whether the lighting color and brightness of the full-color LED lighting lamp meet the standard of a standard color space.
When the inventor actually operates according to the steps, the steps are as follows:
in a standard darkroom, color coordinate values are measured for the RGB lamp to be corrected, and X, Y, Z measured values of R/G/B/W are obtained.
And calculating to obtain a correction matrix A.
The basic expression in the chrominance space conversion is as follows:
we require the final conversion value to be:
the original input values are:
firstly, substituting the RGB color coordinate values measured in the first step into an expression to obtain a correction matrix A,
A＝cUDV-1
c is a constant value, with the aim of normalizing the matrix.
Here, the RGB color coordinate values measured in the first step are substituted.
Herein r is4、g4、b4As white color coordinate values
X here4、y4、z4Is the first stepWhite color coordinates measured in steps.
And (4) sleeving the A matrix obtained by calculation into a system for operation, and realizing real-time operation by using circuit hardware or firmware to perform chrominance space conversion.
FIG. 2 is a hardware block diagram of the preferred embodiment of the present invention. As shown in the figure, the full-color LED lighting fixture 1 includes a base 11, a plurality of LED light sources 12 and a control circuit board 13.
The base 11 is made of a metal or non-metal material, and a metal material with good heat dissipation effect is usually selected, and an accommodating space 111 is formed on the inner surface of the base 11.
The LED light sources 12 are commonly RGB LEDs, so that the color can be adjusted, and the LED light sources 12 are arranged on the inner surface of the base 11 at intervals in a matrix distribution manner, and can emit the most suitable light for the illumination requirement after appropriate light mixing and correction.
The control circuit board 13 is disposed on one side of the base 11 and electrically connected to the plurality of LED light sources 12, and the control circuit board 13 is electrically connected to an external power source (not shown) to input a driving power and the control signal.
The full-color LED lighting device 1 further includes an adjuster 14 electrically connected to the control circuit board 13 for adjusting the color output of each RGB LED, so that the full-color LED lighting device emits a bright light with a desired color temperature. In addition, the adjuster 14 can also be used in conjunction with a remote controller 15, and the adjuster 14 has a first wireless transceiver 141, and the remote controller 15 has a second wireless transceiver 151, so that the adjuster 14 can be remotely controlled wirelessly by the remote controller 15 to adjust the color and brightness of the full-color LED lighting fixture 1. In addition, the remote controller 15 can also be a general smart phone to adjust the full-color LED lighting fixture in combination with an application program.
It is to be understood that the foregoing is only illustrative of the present invention and is not to be construed as limiting the scope of the invention, so that modifications and variations of the invention may be made without departing from the spirit and scope of the invention.
Claims (6)
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108668411B (en) * | 2018-06-13 | 2019-12-20 | 广州市浩洋电子股份有限公司 | Color correction method for color lamp |
| CN117119630A (en) * | 2018-08-09 | 2023-11-24 | 深圳中科维优科技有限公司 | Color space management device of LED multi-primary color lamp |
| CN110767198B (en) * | 2019-09-29 | 2020-11-24 | 深圳吉迪思电子科技有限公司 | Color gamut correction method and system and display driving integrated circuit |
| CN117395825B (en) * | 2023-11-24 | 2024-06-14 | 北京同步风云科技有限公司 | Correction software control method based on real-time LED brightness and color difference |
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| CN1538377A (en) * | 2003-03-13 | 2004-10-20 | ��˹���´﹫˾ | Color OLED display system |
| CN101577994A (en) * | 2008-05-06 | 2009-11-11 | 旭丽电子(广州)有限公司 | Light sensing device for correcting lighting equipment and sensing method |
| TW201038931A (en) * | 2009-04-21 | 2010-11-01 | Coretronic Display Solution Corp | Clibration system and method thereof for calibrating display |
| CN102196633A (en) * | 2011-03-08 | 2011-09-21 | 广州市雅江光电设备有限公司 | Colour correction method for coloured light lamp |
| CN105683653A (en) * | 2013-09-09 | 2016-06-15 | 通用电气照明解决方案有限责任公司 | Enhanced color-preference light sources |
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- 2016-11-02 CN CN201610948725.2A patent/CN108024410B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1538377A (en) * | 2003-03-13 | 2004-10-20 | ��˹���´﹫˾ | Color OLED display system |
| CN101577994A (en) * | 2008-05-06 | 2009-11-11 | 旭丽电子(广州)有限公司 | Light sensing device for correcting lighting equipment and sensing method |
| TW201038931A (en) * | 2009-04-21 | 2010-11-01 | Coretronic Display Solution Corp | Clibration system and method thereof for calibrating display |
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