CN216389259U

CN216389259U - Electrode structure and excimer lamp with same

Info

Publication number: CN216389259U
Application number: CN202123175660.8U
Authority: CN
Inventors: 韩伟; 姜文锋; 牟忠德
Original assignee: Jiangsu Shengzhishou Medical Technology Co ltd
Current assignee: Jiangsu Shengzhishou Medical Technology Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-04-26
Anticipated expiration: 2031-12-16

Abstract

The utility model provides an electrode structure and an excimer lamp with the electrode structure, belonging to the technical field of medical instruments, wherein the electrode structure comprises: the arc electrode is in a semicircular arc plate shape, and the inner wall of the arc electrode is suitable for being attached to the outer surface of the lamp tube; the paraboloid reflecting plate is connected to two extending ends of the arc-shaped surface of the arc-shaped electrode, and the focus of the paraboloid reflecting plate is superposed with the circle center of the arc-shaped electrode; according to the electrode structure, the arc electrode is used for generating a magnetic field and reflecting ultraviolet light, the paraboloid reflecting plate is used for reflecting the ultraviolet light reflected by the arc electrode and the ultraviolet light directly emitted by the lamp tube, so that most of the ultraviolet light can be emitted in parallel, most of the emitted ultraviolet light can vertically penetrate through the band-pass filter, and the light source light extraction efficiency of the excimer lamp is ensured.

Description

Electrode structure and excimer lamp with same

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an electrode structure and an excimer lamp with the same.

Background

The excimer is a diatomic molecule in an excited state, which is unstable, and jumps back to a state with less energy in a short time, and decomposes into atoms while radiating light energy. Light sources made according to this principle are called excimer light sources.

Chinese patent document CN214411119U discloses an excimer germicidal lamp, in which a first electrode and a second electrode are mounted on the outer surface of a lamp tube, and electrode plates of the first electrode and the second electrode are in an arc-shaped structure concentric with the lamp tube and having a preset included angle. When the lamp works, the working gas in the lamp tube is excited to emit light through an electric field generated between the first electrode and the second electrode; in addition, when the first electrode and the second electrode adopt aluminum electrode sheets capable of reflecting ultraviolet rays in UVC wave band, the aluminum electrode sheets can be used as reflectors, so that light emitted by the lamp tube can be emitted towards a fixed position.

However, with the above scheme, when the ultraviolet light of the lamp tube is reflected by the first electrode and the second electrode, although the ultraviolet light emitted by the lamp tube can be collected and emitted, the emitted ultraviolet light is still emitted in the whole space, and when the ultraviolet light emitted in the whole space passes through the band pass filter, the ultraviolet light which cannot vertically irradiate the band pass filter is absorbed by the band pass filter, so that the light extraction efficiency of the excimer light source is not high.

SUMMERY OF THE UTILITY MODEL

Therefore, the present invention is directed to overcome the drawback of low light extraction efficiency of excimer lamps in the prior art, and to provide an electrode and an excimer lamp having the same.

In order to solve the above technical problem, the present invention provides an electrode structure comprising:

the arc electrode is in a semicircular arc plate shape, and the inner wall of the arc electrode is suitable for being attached to the outer surface of the lamp tube;

the paraboloid reflecting plate is connected to two extending ends of the arc-shaped surface of the arc-shaped electrode, and the focus of the paraboloid reflecting plate is coincided with the circle center of the arc-shaped electrode.

Optionally, the arc of the circular arc electrode is equal to pi.

Optionally, the parabolic reflector plate and the circular arc electrode are integrally formed.

Optionally, the parabolic reflector plate and the circular arc electrode are made of the same material.

Optionally, the parabolic reflector and the circular arc electrode are both made of aluminum.

The present invention also provides an excimer lamp comprising: the lamp tube comprises a lamp tube and at least two electrode structures in any one of the above schemes, wherein the electrode structures are sequentially arranged at intervals in the length direction of the lamp tube.

Optionally, the distance between two adjacent electrode structures is 5-10 mm.

Optionally, the diameter of the lamp tube is 5-50 mm.

Optionally, the lamp tube has a gas storage cavity of 20-200 mm.

Optionally, the method further comprises: the band-pass filter is perpendicular to the light rays emitted after being reflected by the parabolic reflecting plate and is used for transmitting the light of the preset wave band emitted by the lamp tube.

The technical scheme of the utility model has the following advantages:

1. according to the electrode structure provided by the utility model, the arc electrode is used for generating a magnetic field and reflecting ultraviolet light, the paraboloid reflecting plate is used for reflecting the ultraviolet light reflected by the arc electrode and the ultraviolet light directly emitted by the lamp tube, so that most of the ultraviolet light can be emitted in parallel, most of the emitted ultraviolet light can vertically penetrate through the band-pass filter, and the light source light extraction efficiency of the excimer lamp is ensured.

2. According to the electrode structure provided by the utility model, the radian of the arc electrode is equal to pi, reverse light is reflected by using the spherical mirror of the arc electrode, and then the parabolic reflecting plates arranged at two extending ends of the arc surface of the arc electrode are combined, most of light emitted by the lamp tube can be reflected in parallel, so that the light extraction efficiency of a light source is further ensured; the arc electrode has two functions of an electrode and an optical reflector, and the compactness of the system can be improved.

3. The excimer lamp provided by the utility model has any one of the advantages as the electrode structure is adopted; in addition, the electrode structure can reflect the light of the lamp tube in the largest range on the premise of generating a magnetic field by limiting the distance between the electrode structures on the lamp tube, so that the light source light extraction efficiency of the excimer lamp is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a perspective view of one embodiment of a lamp tube of an excimer lamp provided in an embodiment of the present invention.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a light path diagram of light rays positioned in the circular arc electrode.

Fig. 4 is a light path diagram of light rays positioned above the circular arc electrode.

Description of reference numerals:

1. a lamp tube; 2. an electrode structure; 3. a circular arc electrode; 4. a parabolic reflector plate; 5. a bandpass filter.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Excimer lamps made with halogens and inert gases can achieve various ultraviolet wavelengths, such as: the ultraviolet light of 222nm can be obtained by an excimer lamp of chlorine and krypton gas, and the ultraviolet light can be sterilized. The light in the 200-230nm wave band range is difficult to penetrate through human skin tissues, has no mercury pollution, and is a very potential ultraviolet light source. To obtain pure ultraviolet light in the wavelength range of 200-230nm, a band-pass filter is used, and in this wavelength range, the band-pass filter has a relatively high absorption ratio to ultraviolet light and has one characteristic: as the incident angle of light increases, the light transmittance decreases, and the transmission spectrum shifts.

The excimer lamp provided by the embodiment can be used for emitting 222nm ultraviolet light.

As shown in fig. 1, a specific embodiment of the excimer lamp provided in this embodiment includes: the lamp tube comprises a lamp tube 1 and two electrode structures 2 attached to the outer surface of the lamp tube 1, wherein the two electrode structures 2 are sequentially arranged at intervals in the length direction of the lamp tube 1. When the lamp tube 1 works, the lamp tube 1 is filled with working gas, specifically, mixed gas of krypton and chlorine or mixed gas of krypton and hydrogen chloride, and the like, the two electrode structures 2 connected to the lamp tube 1 respectively form a positive electrode and a negative electrode, and after the lamp tube 1 is electrified, the working gas in the gas storage cavity of the lamp tube 1 can be excited to emit light by a high-voltage electric field between the positive electrode and the negative electrode. In the excimer lamp provided in this embodiment, the electrode structure 2 includes: the lamp tube comprises a circular arc electrode 3 and a parabolic reflecting plate 4, wherein the circular arc electrode 3 is in a semicircular arc plate shape, and the inner wall of the circular arc electrode 3 is suitable for being attached to the outer surface of the lamp tube 1; the parabolic reflecting plate 4 is connected to two extending ends of the arc-shaped surface of the arc-shaped electrode 3, and the focus of the parabolic reflecting plate 4 is superposed with the circle center of the arc-shaped electrode 3. The inner sides of the arc electrode 3 and the paraboloid reflecting plate 4 are mirror surfaces, and can reflect ultraviolet light emitted by the lamp tube 1, so that the ultraviolet light emitted by the lamp tube 1 is collimated. In addition, as an alternative embodiment, the electrode structures 2 may be sequentially arranged on the lamp tube 1 at intervals along the length direction.

The excimer lamp provided by the embodiment collimates ultraviolet rays firstly during working, then emits the ultraviolet rays through the band-pass filter 5, and the collimated ultraviolet rays can vertically irradiate the band-pass filter 5, so that the reflectivity of ultraviolet rays with the wavelength of 222nm is greater than 80%, and the problems of absorption of the band-pass filter 5 to the ultraviolet rays and wavelength drift are reduced to the maximum extent.

As shown in fig. 1, in the excimer lamp provided in this embodiment, the distance between two adjacent electrode structures 2 on the lamp tube 1 is 5-10 mm. Compare in electrode structure 2 before improving, the interval between two electrode structure 2 has been dwindled to this embodiment to can be better utilize two electrode structure 2's reflection of light function, make more light of fluorescent tube 1 transmission can be by reflection collimation, improve ultraviolet reflectivity.

As shown in fig. 1, in the excimer lamp provided in this embodiment, the diameter of the lamp tube 1 may be 5-50mm, and the lamp tube 1 has a gas storage cavity of 20-200mm, which is used for storing the working gas therein. Specifically, for example: the diameter of the lamp tube 1 can be 40mm, the length of the gas storage cavity in the lamp tube 1 can be 180mm, and the length of the lamp tube 1 can be 220 mm.

As shown in fig. 2, the excimer lamp provided in this embodiment includes: the band-pass filter is perpendicular to the light emitted after being reflected by the parabolic reflector 4, that is, the band-pass filter is perpendicular to the light emitted by the lamp tube 1, so that excessive ultraviolet light of 222nm is prevented from being absorbed, and the light of a preset wavelength band emitted by the lamp tube 1 is prevented from transmitting.

As shown in fig. 2, the radian of the arc electrode 3 is equal to pi, and after the parabolic reflector 4 is disposed at two extending ends of the arc surface of the arc electrode 3, most of the light emitted by the lamp tube 1 can be reflected and collimated by the combined action of the arc electrode 3 and the parabolic reflector 4, so as to ensure the efficiency of extracting the light from the light source. In a preferred embodiment, the parabolic reflector 4 and the circular arc electrode 3 are integrally formed. The parabolic reflector 4 and the circular arc electrode 3 may be made of the same material, and preferably both aluminum, and when high purity aluminum is used as the electrode, the electrode can also serve as a reflector, which can improve the compactness of the system. In addition, as an alternative embodiment, the electrode structure 2 may be made of other materials such as aluminum alloy, stainless steel, copper, iron, and silver. The arc electrode 3 and the parabolic reflector 4 may also be assembled into a whole, and the arc electrode 3 and the parabolic reflector 4 may be made of different materials.

As shown in fig. 3 and 4, in the excimer lamp provided in this embodiment, the electrode structure 2 is used for generating a magnetic field and reflecting ultraviolet light through the arc electrode 3, and is used for reflecting and collimating ultraviolet light reflected by the arc electrode 3 and ultraviolet light directly emitted through the lamp tube 1 through the parabolic reflector plate 4, so that most of the ultraviolet light can be emitted in parallel, and thus it is ensured that the emitted ultraviolet light can vertically pass through the bandpass filter 5, and the light source light extraction efficiency of the excimer lamp is ensured. Specifically, light rays emitted downwards from the center of the lamp tube 1 reversely return from the center of the lamp tube 1 through the inner side mirror reflection of the arc electrode 3, coincide with light rays above the center of the lamp tube 1, and are incident on the band-pass filter 5 after being reflected and converged by the parabolic reflecting plate 4, so that the angle of the incident light rays is reduced, and the emitting efficiency of ultraviolet light in the range of 200 plus 230nm is improved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the utility model may be made without departing from the scope of the utility model.

Claims

1. An electrode structure, comprising:

the arc electrode (3) is in a semicircular arc plate shape, and the inner wall of the arc electrode (3) is suitable for being attached to the outer surface of the lamp tube (1);

the parabolic reflecting plates (4) are connected to two extending ends of the arc-shaped surface of the arc-shaped electrode (3), and the focus of each parabolic reflecting plate (4) is coincided with the circle center of the arc-shaped electrode (3).

2. Electrode structure in accordance with claim 1 characterized in that the arc of the circular arc electrode (3) is equal to pi.

3. Electrode structure in accordance with claim 2 characterized in that the parabolic reflector plate (4) and the circular arc electrode (3) are integrally formed.

4. Electrode structure in accordance with claim 3 characterized in that the parabolic reflector plate (4) and the circular arc electrode (3) are of the same material.

5. The electrode structure according to claim 4, characterized in that the parabolic reflector plate (4) and the circular arc electrode (3) are both made of aluminum.

6. An excimer lamp, comprising: a lamp vessel (1) and at least two electrode structures according to any of claims 1 to 5, a plurality of said electrode structures (2) being arranged at intervals in sequence in the length direction of said lamp vessel (1).

7. An excimer lamp as claimed in claim 6, wherein the spacing between two adjacent electrode structures (2) is 5-10 mm.

8. An excimer lamp as claimed in claim 6, wherein the diameter of the lamp vessel (1) is 5-50 mm.

9. An excimer lamp as claimed in claim 6, wherein the lamp vessel (1) has a gas storage cavity of 20-200 mm.

10. An excimer lamp as claimed in any one of claims 6 to 9, further comprising: the band-pass filter is perpendicular to the light emitted after being reflected by the parabolic reflecting plate (4), and is used for transmitting light of a preset waveband emitted by the lamp tube (1).