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Low-blue light hazard LED light source and manufacturing method thereof and lamp

A technology for LED light sources and blue light hazards, applied in light sources, optical elements for changing the spectral characteristics of emitted light, lighting and heating equipment, etc., can solve problems such as low color rendering index, low correlated color temperature and unfavorable reading clarity

Inactive Publication Date: 2018-10-02
HKUST LED FPD TECH R&D CENT AT FOSHAN
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AI Technical Summary

Problems solved by technology

Although the blue light radiation energy of the white LED light-emitting mechanism with low correlated color temperature (such as <3000K) is very low, the blue light hazard is very small, but the low correlated color temperature is not conducive to the clarity of reading, and the color rendering index is low

Method used

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  • Low-blue light hazard LED light source and manufacturing method thereof and lamp
  • Low-blue light hazard LED light source and manufacturing method thereof and lamp
  • Low-blue light hazard LED light source and manufacturing method thereof and lamp

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Embodiment Construction

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as...

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Abstract

The invention relates to a low-blue light hazard LED light source and a manufacturing method thereof and a lamp comprising the low-blue light hazard LED light source. The low-blue light hazard LED light source comprises a blue light exciting LED chip, fluorescent powder, a blue light compensation LED chip and a light mixing mechanism. The low-blue light hazard LED light source and the manufacturing method and the lamp are provided with the blue light compensation LED chip for blue light compensation of white light emitted by a white light LED light emitting mechanism with low related light temperature; as the peak value wavelength of the compensated blue light is within 460-480 nm, the compensated blue light is lower in harm to eye retinas; and the compensated blue light enables the wholeLED light source to meet related color temperature, light effect and color rendering index needed by such places as reading, and in particular, facilitates improvement of the color rendering index.

Description

technical field [0001] The invention relates to the field of lamps, in particular to an LED light source with high luminous efficiency, low blue light hazard and high CRI, a manufacturing method thereof, and a lamp containing the low blue light hazard LED light source. Background technique [0002] A light emitting diode (Light Emitting Diode, LED) is a solid-state semiconductor device that can directly convert electrical energy into light energy. For the white light LED light-emitting mechanism, the most common method is to use the blue light emitted by the blue chip to excite the phosphor to emit yellow-green light, which is then mixed with the remaining blue light of the chip to form white light. Such a light-emitting mechanism has many advantages such as high light efficiency and environmental protection, but it also hides safety problems, such as blue light hazards. A typical blue light chip excites phosphor powder to generate white light, and its spectrum will have a ...

Claims

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Application Information

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IPC IPC(8): F21K9/20F21K9/64F21V9/30F21V29/503F21Y115/10
CPCF21V29/503
Inventor 谢育仁赵惠珊冯铭新李世玮
Owner HKUST LED FPD TECH R&D CENT AT FOSHAN
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