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Design method of spectrum-adjustable LED artificial sunlight lighting system

A lighting system and design method technology, applied in the direction of light guides, lighting and heating equipment, lighting devices, etc. Performance, light quality improvement effect

Pending Publication Date: 2017-09-15
GUANGDONG INST OF SEMICON IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are still the following deficiencies: 1) The direct light used cannot be used for spectral control; 2) The background light formed by Rayleigh scattering from the source of diffuse reflection has high requirements for the control technology of the particles in the Rayleigh scattering plate; 3 ) The system does not involve the uniformity control method of outgoing light and background light; 4) The overall production scheme is complicated and the cost is high

Method used

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  • Design method of spectrum-adjustable LED artificial sunlight lighting system
  • Design method of spectrum-adjustable LED artificial sunlight lighting system
  • Design method of spectrum-adjustable LED artificial sunlight lighting system

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Embodiment 1

[0038] 1) According to the solar spectrum curve, select LED chips with different wavelengths to design the LED light source module. The specific design method is as follows: figure 2 As shown, it includes two blue LED chips, one green LED chip, one red LED chip and two white LED chips. The LED chips of each color are LED monochrome chips with a narrow spectrum, and different chips Evenly distributed;

[0039] 2) The optimal color temperature is 6000K, and the color temperature control algorithm is designed. Firstly, according to the color temperature, the ratio of each LED monochromatic light is calculated, and then an iterative optimization algorithm is used to obtain the ratio of each LED monochromatic light at the set color temperature. Finally, PWM is used to adjust the color temperature. The light mode controls and drives the output of each LED monochromatic light to obtain a stable and adjustable solar spectrum light source. The spectrum diagram is as follows image 3 ...

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Abstract

The invention provides a design method of a spectrum-adjustable LED artificial sunlight lighting system. The design method comprises the steps: 1) designing a spectrum-adjustable light source, including design of an LED light source module and a color temperature control algorithm; 2) designing illumination optical systems, including primary optical design, focusing system design, secondary mixed light design and diffuse reflection backlight design. According to the design method provided by the invention, based on the non-imaging optical theory, an integrated optical-electromechanical system is designed, and more design space and degree of freedom are provided for design of the optical system; compared with the traditional design method, single wavelength design is changed to multi-wavelength design, so that the light quality of the light source passing through the designed optical system is improved greatly; two kinds of emergent light are obtained through design of the spectrum-adjustable light source and the secondary optical design of the light source, one kind of the emergent light is direct light similar to the solar spectrum, and the other kind of emergent light is diffuse reflection backlight similar to outer space; and the problem of the diffuse reflection backlight uniformity is solved skillfully, and the direct light uniformity is improved greatly.

Description

technical field [0001] The invention relates to the technical field of lighting devices, in particular to a design method for an LED artificial sunlight lighting system with adjustable spectrum. Background technique [0002] Semiconductor lighting (LED lighting) is the third light source revolution after incandescent lamps and fluorescent lamps. Due to its outstanding features such as high efficiency, energy saving, environmental protection, long life, and similar point light source, it is one of the most promising high-tech fields in the world in recent years. It has received strong support from major countries and regions in the world. At present, the global LED industry has entered the During the period of rapid development, the penetration rate of global LED lighting is rapidly increasing. [0003] With the continuous improvement of the luminous efficiency of white LEDs, the space for improving luminous efficiency is further limited, and people's continuous pursuit of q...

Claims

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Application Information

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IPC IPC(8): F21K9/20F21K9/61F21K9/68F21K9/69F21V13/00F21V8/00F21V5/04F21V7/04F21Y115/10
CPCF21K9/20F21K9/61F21K9/68F21K9/69F21V5/04F21V7/04F21V13/00F21V2200/40F21Y2115/10
Inventor 张志清陈志涛古志良许毅钦许平
Owner GUANGDONG INST OF SEMICON IND TECH
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