Light source and method for generating natural spectrum

Abstract

The embodiment of the present invention discloses a light source and a method for generating a natural spectrum, and relates to the field of optoelectronic technology to comprehensively consider the influence of the spectral shape of a synthesized spectrum on human health from the viewpoint of healthy illumination. The invention provides a healthy light source that comprises: an LED chip for emitting light of a first peak wavelength; a first fluorescent powder, a second fluorescent powder, a third fluorescent powder and a fourth fluorescent powder which generate light of a second peak wavelength, light of a third peak wavelength, light of a fourth peak wavelength, and light of a fifth peak wavelength respectively when excited by the light of the first peak wavelength. The ratio of the intensity of the remaining light of the light of the first peak wavelength absorbed by the first fluorescent powder, the second fluorescent powder, the third fluorescent powder, and the fourth fluorescentpowder, the intensity of the light of the second peak wavelength, the intensity of the light of the third peak wavelength, the intensity of the light of the fourth peak wavelength and the intensity of the light of the fifth peak wavelength satisfy a predetermined condition.

Description

technical field [0001] Embodiments of the present invention relate to the field of optoelectronic technology, and in particular to a light source and a method for generating a natural spectrum. Background technique [0002] At present, the general implementation method of LED light source is to excite yellow phosphor powder or yellow-green phosphor powder through a blue light chip. [0003] Such an implementation method has problems such as the peak value of blue light is too high, and the spectrum is obviously incomplete, which directly leads to greater harm of blue light and poor color rendering index of individual color plates. Healthy lighting is more and more widely recognized. There are many different opinions about what kind of light source is the light source of healthy lighting. It is generally said that if the color rendering index of all 15 color plates is above 90, it can be called a full spectrum. The full spectrum itself is not defined from the perspective of...

AI Technical Summary

Problems solved by technology

Since the conventional scheme only considers indicators such as color coordinates, color rendering index, and light efficiency, and does not consider the impact of spectral shape on human health, such as spectral integrity and low blue light hazards, etc., it cannot achieve healthy light sources

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