An LED light source of natural light or solar spectrum

Abstract

The invention discloses a method for exciting fluorescent powder of different wavelengths with specific ratio by chip and combination of specific wavelength in the research and production field of SMDLED or COB and other luminescent light sources to generate the ratio and combination of natural light or sunlight (visible light part) with spectrum equalization. Chips with specific luminescent wavelengths include 440- 447 nm chip, 455- 460 nm chip, 465- 470 nm chip, the specific wavelength of phosphor including 495- 505 nm phosphor, 515- 530 nm phosphor, 620- 630 nm phosphor, 650- 660nm fluorescent powder, the combination of the three chips is 1: 1, 3: 2: 3, 2: 4: 2, 4: 2: 2, 2: 2: 4 respectively, and the mass ratio of phosphor is (3-7): (120- 185): (5- 10): (1-5) or (4-9): (115- 180): (5-11): (2- 8) respectively. The invention aims at solving the harm of common LED spectrum unbalance and excessive blue light to human eyes, and providing a healthier and higher color rendering index light source for people.

Description

technical field [0001] The invention relates to the field of LED luminous light sources, especially natural light or sunlight spectrum LEDs. Background technique [0002] In the current mainstream LED light sources, a single blue or violet light-emitting chip is mainly used to cover one or several phosphors to produce white light. From its relative or absolute spectral curve, we can generally see that the energy of blue light is dominant, that is, we usually Said unbalanced spectrum relative to the spectrum of natural light or visible sunlight. This unbalanced spectrum LED light source is used in the field of lighting, especially in the field of indoor lighting, which often causes "blue light hazards" to human eyes. When used in the field of plant growth lighting, due to its unbalanced spectrum, plants can grow at various stages of growth. Light of less than the corresponding wavelength usually leads to retardation of certain growth stages of plants, severe yield reduction ...

AI Technical Summary

Problems solved by technology

This unbalanced spectrum LED light source is used in the field of lighting, especially in the field of indoor lighting, which often causes "blue light hazards" to human eyes. When used in the field of plant growth lighting, due to its unbalanced spectrum, plants can grow at various stages of growth. Illumination of less than the corresponding wavelength, usually leads to retardation of certain growth stages, severe yield reduction or even death of plants

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