Infrared LED light source based on blue light excited remote fluorescent powder
A technology of LED light source and remote phosphor, applied in electrical components, circuits, semiconductor devices, etc., can solve the problem of low spectral purity, and achieve the effects of good emission spectrum consistency, high photoelectric conversion efficiency, and strong spectral continuity.
Pending Publication Date: 2021-01-22
中山市顺为鑫科技有限公司
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Problems solved by technology
However, the above-mentioned schemes all have the problem of stray light in similar bands when generating light in a specific infrared band (such as 730nm, 850nm or 940nm), and the spectral purity of the light generated by the infrared chip is lower.
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[0035] The technical features of the present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can understand.
[0036] An infrared LED light source based on blue light exciting fluorescent powder, including a substrate 2, a metallized circuit layer 4 is arranged on the periphery of the substrate 2, a light window cover plate 1 is arranged on the metalized circuit layer 4, and the light The window cover plate 1 is a cavity structure, and the light window cover plate 1 is arranged on the top of the substrate 2 so that a cavity 6 is formed between the light window cover plate 1 and the substrate 2, and the cavity 6 Depth H3≧0.5 mm, a blue light chip 3 is provided in the cavity 6, the light window cover plate 1 includes a metal piece 101, and the metal piece 101 is respectively provided with a light hole to cover the light The light window lens 102 of the hole is coated with the remote phosphor layer...
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Abstract
The invention discloses an infrared LED light source based on blue light excited remote fluorescent powder. The infrared LED light source is characterized by comprising a substrate, the substrate is of a planar structure, a metallized circuit layer is arranged on the periphery of the substrate, a light window cover plate is arranged on the metallized circuit layer, and the light window cover plateis of a cavity structure; wherein the light window cover plate is arranged above the substrate, so that a cavity is formed between the light window cover plate and the substrate, a blue light chip isarranged in the cavity, the light window cover plate comprises a metal piece, a light through hole and a light window lens covering the light through hole are respectively arranged on the metal piece, and the bottom surface of the light window lens is coated with a remote fluorescent powder layer. Compared with a traditional scheme adopting an infrared chip, theinfrared LED light source has the advantages of being high in spectrum continuity, high in photoelectric conversion efficiency, good in air tightness, flexible in application, high in cost performance and the like, and has the advantages of being good in emission spectrum consistency, high in air tightness and reliability and the like compared with a scheme adopting blue light excited fluorescent powder of the same type.
Description
【Technical field】 [0001] The invention relates to an infrared LED light source based on blue light exciting fluorescent powder and a preparation method thereof. 【Background technique】 [0002] With the maturity of LED technology, LED has been widely used in various industries. In recent years, the development of 5G technology has driven the Internet of Everything and smart homes, giving light different meanings. Among them, infrared LEDs have played an important role in security, face recognition, machine vision, intelligent control, food testing and medical treatment. Traditional infrared LEDs are mostly plug-in epoxy resin or silicone packaging structures, and mainly use infrared chip solutions. The near-infrared application of 660nm-1100nm is more common, but at present, the light in this wavelength range cannot be completely produced by the chip, and the light of the infrared chip is more discontinuous. The photoelectric conversion efficiency is generally lower than th...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01L33/50H01L33/48H01L33/56H01L33/58H01L33/62
CPCH01L33/48H01L33/483H01L33/507H01L33/56H01L33/58H01L33/62H01L2933/0033H01L2933/0041H01L2933/005H01L2933/0058H01L2933/0066
Inventor 李知霆陶亚霖
Owner 中山市顺为鑫科技有限公司