A deep ultraviolet light source for electron beam excitation phosphor powder
A deep ultraviolet light source and electron beam technology, applied in the field of deep ultraviolet light source, can solve the problems of low UV-LED conversion efficiency, short service life, low application efficiency, etc., and achieve easy mass production, increase light output power, and good heat dissipation effect Effect
Active Publication Date: 2022-02-25
SHANGHAI JIYOUWEI OPTOELECTRONICS TECH CO LTD
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Problems solved by technology
[0002] Deep ultraviolet light sources are widely used in the field of radiation sterilization. At present, the most commonly used deep ultraviolet light sources are mercury lamps, but mercury lamps contain mercury, which is easy to cause mercury pollution during production and use. At the same time, mercury lamps are produced by gas discharge. Ultraviolet light, the spectral line of the mercury lamp is a continuous spectrum in the ultraviolet region, and the application efficiency is low. At the same time, due to the high temperature of the electrode when the mercury lamp is working, its service life is relatively short
[0003] UV-LED has the characteristics of mercury-free, energy-saving, and portable. It is a kind of ultraviolet light source that can replace mercury lamps. However, UV-LED conversion efficiency is low, and its high manufacturing cost and low output power limit its use in sterilization and disinfection. field application
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[0019] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0020] The specific implementation manners of the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.
[0021] refer to figure 1 , The deep ultraviolet light source for electron beam excitation phosphor powder of the embodiment of the present application includes...
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Abstract
The invention relates to the field of ultraviolet light sources, in particular to a deep ultraviolet light source for exciting fluorescent powder with electron beams. The light source includes a fluorescent screen, an electron gun, and a ceramic housing, wherein: the fluorescent screen includes a sapphire substrate and an ultraviolet phosphor layer coated on the sapphire substrate; the electron gun is arranged in the ceramic housing, and the electron gun generates The electron beam is directed towards the ultraviolet phosphor layer, and the ultraviolet phosphor layer emits deep ultraviolet light through the sapphire substrate under the excitation of the electron beam; the fluorescent screen is matched and sealed with the ceramic shell through a Kovar metal ring. Compared with the existing mercury lamps and UV-LEDs, the ultraviolet light source of the embodiment of the present application has the advantages of no pollution, low cost, and easy mass production, and has broad application prospects in the field of sterilization and disinfection.
Description
technical field [0001] The present application relates to the field of ultraviolet light sources, in particular to a deep ultraviolet light source for electron beam excitation of fluorescent powder. Background technique [0002] Deep ultraviolet light sources are widely used in the field of radiation sterilization. At present, the most commonly used deep ultraviolet light sources are mercury lamps, but mercury lamps contain mercury, which is easy to cause mercury pollution during production and use. At the same time, mercury lamps are produced by gas discharge. For ultraviolet light, the spectral line of the mercury lamp is a continuous spectrum in the ultraviolet region, and the application efficiency is low. At the same time, because the electrode temperature of the mercury lamp is high during operation, its service life is relatively short. [0003] UV-LED has the characteristics of mercury-free, energy-saving, and portable. It is a kind of ultraviolet light source that c...
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IPC IPC(8): F21K2/00A61L2/10
CPCA61L2/10F21K2/00A61L2202/11
Inventor 赵健夏忠平朱滨
Owner SHANGHAI JIYOUWEI OPTOELECTRONICS TECH CO LTD