Luminaires and luminaires for health lighting

A light-emitting device and a healthy technology, applied in semiconductor devices, electrical components, circuits, etc., can solve the problems of high blue light intensity and unsaturated red light, and achieve the effects of continuous spectrum, rich saturated red, and good application prospects

Active Publication Date: 2021-04-16
XUYU OPTOELECTRONICSSHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a light-emitting device and a lamp for healthy lighting, aiming to solve the technical problems of high blue light intensity and unsaturated red light in the full spectrum of existing LED devices

Method used

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  • Luminaires and luminaires for health lighting
  • Luminaires and luminaires for health lighting
  • Luminaires and luminaires for health lighting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A light-emitting device, including three kinds of blue light band LED chips, wherein the chip current density is equivalent, the voltage is 2.9-3.1V, the chip peak wave bands are 455-460nm, 465-470nm, 475-480nm respectively, and the phosphor powder used includes green phosphor powder and red phosphor. The structural chemical formula of the green phosphor is Lu 3 al 5 o 12 : Ce, the emission wavelength is at 512nm; the structural chemical formula of the red phosphor is (Sr, Ca)AlSiN 3 :Eu, the emission wavelengths are located at 648nm and 675nm respectively. The ratio of green phosphor to red phosphor is 7:1. The spectrum of the light-emitting device is as figure 1 The relative intensity and spectral continuity of blue light are shown in Table 1.

Embodiment 2

[0030]A light-emitting device, including three kinds of blue light band LED chips, wherein the chip current density is equivalent, the voltage is 2.9-3.1V, the chip peak wave bands are 455-460nm, 465-470nm, 475-480nm respectively, and the phosphor powder used includes green phosphor powder and red phosphor. The structural chemical formula of the green phosphor is Y3(Al,Ga)5O12:Ce, and the emission wavelength is at 512nm; the structural chemical formula of the red phosphor is (Sr,Ca)AlSiN 3 :Eu, the emission wavelengths are located at 648nm and 675nm respectively. The ratio of green phosphor to red phosphor is 7:1. The relative intensity and spectral continuity of the blue light of the light-emitting device are shown in Table 1.

Embodiment 3

[0032] A light-emitting device, including three kinds of blue light band LED chips, wherein the chip current density is equivalent, the voltage is 2.9-3.1V, the chip peak wave bands are 455-460nm, 465-470nm, 475-480nm respectively, and the phosphor powder used includes green phosphor powder and red phosphor. The structural chemical formula of the green phosphor is Sr 2 SiO 4 :Eu, the emission wavelength is at 512nm; the structural chemical formula of the red phosphor is (Sr,Ca)AlSiN 3 :Eu, the emission wavelengths are located at 648nm and 675nm respectively. The ratio of green phosphor to red phosphor is 7:1. The relative intensity and spectral continuity of the blue light of the light-emitting device are shown in Table 1.

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Abstract

The invention belongs to the technical field of semiconductor lighting, and in particular relates to a light emitting device and a lamp for health lighting. The light-emitting device for healthy lighting includes a blue light chip and phosphors excited by the blue light chip, the blue light chip includes a first LED chip with a peak wavelength of 450-460nm, and a second LED chip with a peak wavelength of 460-470nm And a third LED chip with a peak wavelength of 470-480nm, the fluorescent powder includes aluminate green powder and nitride red powder; wherein, the first LED chip, the second LED chip and the third LED chip are connected in series. In the spectrum formed by the light-emitting device, the relative intensity of blue light is lower, the spectrum is more continuous, and the saturated red color is richer, so it is very suitable for the application field of high-power health lighting.

Description

technical field [0001] The invention belongs to the technical field of semiconductor lighting, and in particular relates to a light-emitting device and a lamp for health lighting. Background technique [0002] Light Emitting Diode (LED for short) is a semiconductor diode that can convert electrical energy into light energy. With the upgrading of LED applications, the market demand for LEDs is developing towards higher power and healthier light sources. [0003] Due to the advantages of high CRI, sunlight-like light, high color reproduction and color saturation, full-spectrum LED has attracted extensive attention and research in the industry. From the perspective of healthy lighting, short-wave blue light (~450nm) that affects vision and cyan light (~480nm) that controls melatonin secretion are key factors to achieve healthy lighting; in addition, long-wave red light (>660nm) helps promote blood circulation. Cycle through to increase the richness of saturated colors. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/50
CPCH01L33/504
Inventor 陈磊林金填吴宇朱玉雪蔡济隆蔡金兰
Owner XUYU OPTOELECTRONICSSHENZHEN CO LTD
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