Full spectrum LED (Light Emitting Diode) ecological light source with 660 nanometer red light character emission

Abstract

The invention provides a full spectrum LED (Light Emitting Diode) ecological light source with 660 nanometer red light character emission based on human vision and plant absorption spectrum, and belongs to the technical field of semiconductor lighting. Yellow-green light in full spectrum is realized through a rare earth cerium (Ce)-doped strontium aluminum oxygen fluorine substratefluorescent material; and 660 nanometer red light in the full spectrum is realized through a rare earth europium(Eu)-doped nitride substratefluorescent material. According to a full spectrum constructing method, rare earth phosphor powder Sr3AlO4F: Ce and CaAlSiN3: Eu, and nanometer SiO2 are uniformly mixed in a certain proportion, and then the mixture is applied to a blue light LED light source to realize the full spectrum; and the yellow-green light in the full spectrum is intensely perceived by human vision and has a synergistic promotion function for plant photosynthetic efficiency. The LED ecological light source constructed by adopting the method is suitable for vertical plantation, intelligent plant factories and indoor plant growth and illumination of home gardening.

Description

technical field [0001] The invention belongs to the technical field of LED semiconductor lighting, and in particular relates to a full spectrum based on human vision and plant absorption spectrum with characteristic emission of 660 nanometer red light and an LED ecological light source using the full spectrum. Background technique [0002] The rapid development of semiconductor lighting technology represented by GaN has promoted the expansion of LED lamps into the ecological lighting field of modern facility agriculture. Because it has low energy consumption, long life, and can adjust light quality and light quantity according to the needs of crops, Promoting the production and development of crops has significantly improved the yield and quality, so it is attracting more and more attention. [0003] The light energy requirements for plant growth are mainly concentrated in the red and blue light bands. These bands include blue light from 400 nm to 520 nm and red light from 6...

AI Technical Summary

Problems solved by technology

The important technical solution of the present invention is to solve the problem of full-spectrum emission artificial light source based on human visual comfort on the basis of the above-mentioned 660 nanometer, broadband, and high-stability red light emission, and the occasion of growing indoor plant growth lighting technology Including vertical planting, intelligent plant factories, and home gardening, not only must meet the above-mentioned requirements for photosynthetic red and blue light, but also meet the needs of human eyes for visual lighting and comfortable lighting. People will feel dizzy and nauseated after working in a red and blue light environment for a period of time Symptoms; In addition, the latest research has found that when green light irradiates plant leaves, part of the green light is reflected by the leaves, and the other part of the green light penetrates the middle and lower layers of plant chloroplasts. Although it does not directly affect the light and dark cycle response mechanism of photosynthesis, However, it can cooperate with red and blue light to promote plant photosynthesis. This artificial green light needs to be realized by a new blue light-excitable broadband yellow-green light-emitting rare earth fluorescent material. There is no such technical solution so far, which is the core of the technology of the present invention.

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