CN212030738U

CN212030738U - High-power infrared radiation light source structure

Info

Publication number: CN212030738U
Application number: CN202021085124.1U
Authority: CN
Inventors: 刘欢; 陈旭阳
Original assignee: Beijing Perfectlight Science And Technology Ltd
Current assignee: Beijing Perfectlight Science And Technology Ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2020-11-27
Anticipated expiration: 2030-06-12

Abstract

The utility model discloses a high power infrared radiation light source structure, this structure comprises a high power infrared irradiator, the primary mirror that has quadric's plane of reflection and the secondary mirror that has the sphere plane of reflection, and quadric's plane of reflection is first plane of reflection, and the sphere plane of reflection is the second plane of reflection. The surface type and the structural size of the first reflecting surface and the second reflecting surface are designed according to the structure and the light-emitting characteristics of the infrared radiator, so that when the infrared radiator emits infrared light waves, the light transmission direction is controlled according to the principle of geometric optics through the reflection of the optical cavity, and then the reflective optical assembly outputs light energy to obtain an infrared radiation light source capable of achieving optical power of several watts, and the infrared radiation light source has the characteristics of wide spectral range and adjustable optical power. Meanwhile, the high-temperature working environment of the reflector group is considered, and a heat insulation and heat dissipation structure is particularly arranged, so that the service life of the reflector group is ensured.

Description

High-power infrared radiation light source structure

[ technical field ] A method for producing a semiconductor device

The utility model belongs to the technical field of infrared light source, concretely relates to high power infrared radiation light source structure.

[ background of the invention ]

In the fields of material analysis, component measurement and the like, a target is generally irradiated by a proper infrared light source to obtain a measurable characteristic signal, and the accuracy and the resolution of the test are directly influenced by the radiation power of the light source in the process, wherein the higher the power is, the higher the accuracy and the resolution are. However, most of the related instruments currently use an imported infrared light source with an optical power within hundreds of milliwatts, which is low in power, limited in application range, and high in price.

[ Utility model ] content

An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a high power infrared radiation light source structure to solve current infrared radiation light source power low, the limited and high technical problem of cost of range of application.

In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:

a high-power infrared radiation light source structure comprises an infrared radiator and a primary mirror; the front end of the primary mirror is a first reflecting surface which is concave towards the interior of the primary mirror, and the axis of the primary mirror passes through the concave center of the first reflecting surface; the primary mirror is fixedly connected with a coaxial secondary mirror, one end of the secondary mirror is a second reflecting surface which is sunken towards the interior of the secondary mirror, and the second reflecting surface and the first reflecting surface are opposite to form a cavity; the axis of the secondary mirror passes through the concave center of the second reflecting surface, and the bottom of the second reflecting surface is provided with a light outlet;

the first reflecting surface is a quadric surface except a spherical surface, and the second reflecting surface is a spherical surface; the spherical center of the second reflecting surface is close to the focus of the first reflecting surface;

the front end of the infrared radiator penetrates through the primary mirror and extends into the cavity, and a light emitting point is arranged at the front end of the infrared radiator; the light emitting point coincides with the focal point of the first reflecting surface.

The utility model discloses a further improvement lies in:

preferably, the first reflecting surface is an elliptical surface, a paraboloid, a hyperboloid or a compound curved surface.

Preferably, the outer walls of the primary mirror and the secondary mirror are both provided with heat dissipation structures; the heat dissipation structure is formed by arranging heat dissipation fins.

Preferably, the infrared radiator includes a body portion, an insertion portion, and a heating portion integrally connected, and the light emitting point is fixedly disposed in the heating portion; the diameter of the main body part is larger than that of the insertion part, and the diameter of the insertion part is larger than that of the heating part; the insertion portion passes through the main mirror, and the heat generating portion is in the cavity.

Preferably, the main mirror is provided with a first through hole penetrating through the outer end surface and the first reflecting surface, and the first through hole and the main mirror are coaxial; the outer end faces the direction of the first reflecting surface, and the first through hole comprises a first part, a second part, a third part and a fourth part which are sequentially connected; the diameter of the first portion is greater than the diameter of the second portion, the diameter of the second portion is greater than the diameter of the third portion, and the diameter of the third portion is greater than the diameter of the fourth portion;

the body portion is inserted in the first and second portions, and the insertion portion passes through the third and fourth portions.

Preferably, the main body part is fixedly sleeved with a fixing ring, the fixing ring is in interference fit with the first part, and the fixing ring is in interference fit with the main body part.

Preferably, the fixing ring, the outer side wall of the body portion and the inner side wall of the first portion form an atmosphere layer.

Preferably, the primary mirror is provided with a second through hole penetrating through the outer wall of the primary mirror and the first reflecting surface, the coaxial infrared radiator is inserted into the second through hole, and the axis of the second through hole is perpendicular to the axis of the primary mirror.

Preferably, the infrared radiator is a ceramic body; the primary mirror and the secondary mirror are both made of aluminum alloy materials; the fixing ring is made of tetrafluoro or silicon rubber.

Preferably, the first reflecting surface and the second reflecting surface are both plated with high-reflection films.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a high power infrared radiation light source structure, this structure sets up a high power infrared radiator in an optical cavity, this cavity comprises a primary mirror that has quadric's plane of reflection and the secondary mirror that has the sphere plane of reflection, quadric's plane of reflection is first plane of reflection, the sphere plane of reflection is the second plane of reflection, the structural dimension of first plane of reflection and second plane of reflection designs according to infrared light source's characteristics, make when infrared light source's luminous element launches the infrared ray ripples, can form specific radiation beam through the combined action of primary mirror and secondary mirror, obtain the infrared radiation light source that can reach the different light power of several watts level, this is several times to ten times of ordinary infrared radiation light source radiation power, but the low price volume production. Compared with other types of infrared radiation sources, such as a commercially available MEMS silicon-based heating body, the structure has the advantages that the radiation power is hundreds of milliwatts, the radiation power of the light source can reach more than five watts, the spectral range is wide, the power is adjustable, the detection precision and range of an instrument can be improved, and meanwhile, the flexibility is high.

Furthermore, the first reflecting surface can be a quadric surface such as an elliptical surface, a paraboloid, a hyperboloid and the like, the second reflecting surface is a spherical surface, and an optical cavity is formed by the first reflecting surface and the second reflecting surface, so that the aims of controlling the direction of emitted light and obtaining target light output are fulfilled.

Furthermore, the core working temperature of the infrared radiator in actual work can reach 1300 ℃ at most, so that the reflector group needs to bear higher temperature, and in order to reduce the temperature of the reflectors and prolong the service life of the reflectors, the two reflectors are provided with heat dissipation structures.

Furthermore, a first through hole is formed in the main mirror and used for fixedly placing the infrared radiator, and the first through hole and the main mirror are coaxial.

Further, the first through hole of the primary mirror is designed to have different sizes for fitting the infrared radiator having different diameters, so that the infrared radiator can be fixed inside the primary mirror.

Furthermore, the infrared radiator is fixedly connected with the main mirror through a fixing ring.

Further, the fixing ring, the main body part and the first part form an atmosphere layer, the atmosphere layer is favorable for reducing the heat dissipation of the infrared radiating body on one hand, and on the other hand, the heat transfer to the primary mirror is reduced, so that the aims of reducing the temperature of the reflector and prolonging the service life of the reflector are further fulfilled.

Further, another mounting manner of the infrared radiator is to insert the infrared radiator into the cavity from the side of the primary mirror, i.e., the axis of the primary mirror is perpendicular to the axis of the infrared radiator, which provides another mounting manner of the infrared radiator.

Furthermore, the first reflecting surface and the second reflecting surface are plated with high-reflection films, so that the light reflection capacity is improved, and the energy utilization rate is improved.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of embodiment 2 of the present invention;

wherein: 1-an infrared radiator; 2-a primary mirror; 3-a thread structure; 4-secondary mirror; 5-fixing the ring; 6-atmosphere layer; 7-a heat dissipation structure; 8-a light outlet; 9-a heat sink; 10-a cavity; 1-1-a body portion; 1-2-insertion moiety; 1-3-a heat-generating portion; 1-4-luminescent point; 2-1-a first quadric surface; 2-2-outer end face; 2-3-major side wall; 2-4 first vias; 2-5-first part; 2-6-second part; 2-7-third part; 2-8-fourth part; 2-9-tapped hole; 2-10-steps; 2-11-a second via; 4-1-a second quadric surface; 4-2-outer plane; 4-3-minor side walls; 4-4-cylinder portion; 4-5-cyclic moiety.

[ detailed description ] embodiments

The present invention will be described in further detail with reference to the accompanying drawings:

in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and encompass, for example, both fixed and removable connections; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses an infrared radiation light source system of high power output, including infrared irradiator 1, primary mirror 2, helicitic texture 3, secondary mirror 4, solid fixed ring 5, atmosphere layer 6, heat radiation structure 7 and light-emitting window 8. The primary mirror 2 and the secondary mirror 4 jointly form a curved reflector group, and an infrared radiator 1 is arranged in the curved reflector group.

Example 1

The main mirror 2 is integrally cylindrical and comprises a first reflecting surface 2-1, an outer end surface 2-2 and a main side wall 2-3, wherein the first reflecting surface 2-1 and the outer end surface 2-2 are opposite, the main side wall 2-3 is connected with the first reflecting surface 2-1 and the outer end surface 2-2, the first reflecting surface 2-1 is a secondary curved surface which is concave towards the inside of the main mirror 2, can be an elliptic surface, a paraboloid, a hyperboloid or a compound curved surface and other secondary curved surfaces, and has a specific focus and a specific focal length; most preferably, the first reflective surface 2-1 is an ellipsoid, the focal point of the first reflective surface 2-1 is on the axis of the primary mirror 2, and the center of the concavity of the first reflective surface 2-1 is also on the axis of the primary mirror 2.

A first through hole 2-4 is formed from the outer end surface 2-2 to the inside of the primary mirror 2, the first through hole 2-4 comprises four coaxial parts with different diameters, the first through hole 2-4 comprises a first part 2-5, a second part 2-6, a third part 2-7 and a fourth part 2-8 which are sequentially connected in the direction from the outer end surface 2-2 to the first quadric surface 2-1, the diameter is taken as a measurement standard, the first part 2-5 is larger than the second part 2-6 and is larger than the third part 2-7 and is larger than the fourth part 2-8, the adjacent two parts are in transition connection through steps, the outer end of the first part 2-5 is the outer end surface 2-2, one end of the fourth part 2-8 is connected to the third part 2-7, the other end is connected to the first quadric surface 2-1, the fourth section 2-8 is at the center of the first reflective surface 2-1. The main side wall 2-3 is provided with a circular groove around the circumference thereof, so that the whole main side wall 2-3 is composed of a row of radiating fins 9 which are arranged at equal intervals, the radiating fins 9 are arranged at equal intervals along the axial direction of the main mirror 2, and all the radiating fins 9 form a radiating structure 7. The outer end face 2-2 is further provided with a plurality of threaded holes 2-9 towards the inside, the threaded holes 2-9 are arranged on the outer end face 2-2 in an equally-divided mode around the fourth portion 2-8, the distances between every two adjacent threaded holes 2-9 are equal, and the threaded holes 2-9 are used for fixedly connecting the whole infrared radiation light source system with other devices. The secondary mirror 4 comprises a second reflecting surface 4-1 and an outer plane 4-2 which are opposite, and a secondary side wall 4-3 which is connected with the outer edge of the second reflecting surface 4-1 and the outer edge of the outer plane 4-2, the second reflecting surface 4-1 is concave towards the inside of the secondary mirror 4, the second reflecting surface 4-1 is a spherical surface, the section of the plane which is vertical to the axis of the secondary mirror 4 is circular, and the center of the sphere is close to the focus of the first reflecting surface 2-1; the outer plane 4-2 is communicated with the second reflecting surface 4-1 through a light outlet 8, the axis of the light outlet 8 is the axis of the secondary mirror 4, and the secondary mirror 4 is coaxial with the primary mirror 2. The secondary side wall 4-3 is divided into a cylindrical surface part 4-4 and a radiating fin 9 which are connected, the cylindrical surface part 4-4 is close to the outer edge of the second reflecting surface 4-1, and the radiating fin 9 is close to the outer plane 4-2; because the second reflecting surface 4-1 of the secondary mirror 4 is an inward concave quadric surface, the secondary side wall 4-3 of the secondary mirror 4 is gradually thickened, the secondary side wall 4-3 of the part close to the second reflecting surface 4-1 is thin, and the secondary side wall 4-3 of the part close to the outer plane 4-2 is thick, so that the secondary side wall close to the outer plane 4-2 can be provided with grooves inwards to form radiating fins 9, the radiating fins 9 on the secondary mirror 4 are arranged at equal intervals, but the depth of the grooves between the radiating fins 9 is different, and the grooves are deeper as being closer to the outer plane 4-2.

Most preferably, the first reflecting surface 2-1 is an elliptical surface, the second reflecting surface 4-1 is a spherical surface, the center of the sphere of the second reflecting surface 4-1 is located at a position 0.5-1mm on the right side near the first focus of the first reflecting surface 2-1 (the focus is close to the first reflecting surface 2-1), and the light emitting point 1-4 coincides with the first focus of the first reflecting surface 2-1.

The main side wall 2-3 of the main mirror 2 is provided with a step 2-10 inwards around the circumference of the part close to the first quadric surface 2-1, the main side wall 2-3 of the step 2-10 is provided with threads, the outer edge of the second reflecting surface 4-1 of the secondary mirror 4 is provided with a circle of annular part 4-5 outwards, the annular part 4-5 and the outer edge of the second reflecting surface 4-1 are integrally connected, the outer side wall of the annular part 4-5 is a part of the secondary side wall 4-3 of the secondary mirror 4, and the inner side wall of the annular part 4-5 is provided with threads. The thread of the annular part 4-5 and the thread of the step 2-10 form a thread structure 3, and the thread structure are matched with each other, so that the primary mirror 2 can be screwed into the secondary mirror 4, and meanwhile, the step 2-10 can clamp the secondary mirror 4 to limit the axial displacement of the primary mirror 2 and the secondary mirror 4; meanwhile, the first reflecting surface 2-1 and the second reflecting surface 4-1 form an optical cavity 10 for controlling light, and atmosphere can be filled or vacuum can be pumped in the cavity 10 according to needs. On the other hand, the primary mirror 2 and the secondary mirror 4 are connected through threads, so that the mirror is firm and reliable and is convenient to disassemble.

The infrared radiator 1 is a ceramic body, the infrared radiator 1 includes a main body portion 1-1, an insertion portion 1-2, and a heat generating portion 1-3 integrally connected, wherein a diameter of the heat generating portion 1-3 is smaller than a diameter of the insertion portion 1-2, a diameter of the insertion portion 1-2 is smaller than a diameter of the main body portion 1-1, the main body portion 1-1 is inserted into the first portion 2-5, the main body portion 1-1 and the second portion 2-6 are clearance-fitted, so that a front end of the entire infrared radiator 1 (including the insertion portion 1-2 and the heat generating portion 1-3) can be inserted into the third portion 2-7 and the fourth portion 2-8, a diameter of the insertion portion 1-2 is smaller than the third portion 2-7, and the insertion portion 1-2 and the fourth portion 2-8 are clearance-fitted, so that the heat generating portion 1-3 can protrude the fourth portion 2-8 into the first quadric surface 2-1. The front end of the heating part 1-3 is provided with a core heating end, namely a luminous point 1-4, and the luminous point 1-4 is superposed with the focus of the first reflecting surface 2-1. A fixing ring 5 is arranged between the inner side walls of the main body part 1-1 and the first part 2-5, the fixing ring 5 and the first part 2-5 are in interference fit, the main body part 1-1 and the second part 2-6 are in transition fit, and the whole infrared radiator 1 can be fixed in the first through hole 2-4 through interference fit and transition fit. Because the fixing ring 5 is disposed at the tail portion of the main body portion 1-1, so that the inner sidewall of the first portion 2-5, the fixing ring 5 and the outer wall of the main body portion 1-1 form the atmosphere layer 6, where the inside of the atmosphere layer 6 can be air, vacuum or inert gas, when the atmosphere layer 6 is inert gas or vacuum, the life of the infrared radiator 1 can be prolonged, and the infrared radiator 1 is prevented from being oxidized. The infrared radiator 1 is a black body radiation source, the rear part of the infrared radiator is a ceramic body, the core heating end is packaged on the ceramic body, a resistance wire is packaged inside the heating tip, the heating tip generates heat after being electrified and heats the whole tip part to generate high temperature, and electromagnetic waves are radiated outwards. The electromagnetic waves mainly comprise infrared light waves, the infrared light waves are adjusted to reach different surface temperatures by adjusting electric power, the infrared light waves are emitted according to the blackbody radiation principle, the rear end of the main body part 1-1 is connected with an electric wire, and the electric wire is connected with the light-emitting points 1-4 to supply power for the light-emitting points 1-4.

Preferably, said infrared radiators are arranged along a common axis of the primary mirror 2 and the secondary mirror 4, without excluding arrangements in which there is an angle with this common axis.

The primary mirror 2 and the secondary mirror 4 are made of aluminum alloy materials, and the first reflecting surface 2-1 and the second reflecting surface 4-1 are both plated with high-reflection films

The following principles are satisfied for the lengths of the major and minor axes of the first reflective surface 2-1, and the radius of the second reflective surface 4-1:

(1) the spherical center of the second reflecting surface 4-1 is positioned near the focal point of the second curved surface 2-1, and preferably, the spherical center of the second reflecting surface 4-1 and the right side of the focal point of the first reflecting surface 2-1 are positioned at 0.5-1 mm; the first focal point of the first reflective surface 2-1 is the focal point of the mirror cavity formed by the second reflective surface 4-1 and the first reflective surface 2-1.

(2) The light emitting point 1-4 of the infrared radiator 1 coincides with the focus of the first reflecting surface 2-1.

The utility model discloses a theory of operation:

the infrared radiator 1 emits infrared light when certain electric power is input, most of the infrared light is reflected by the primary mirror 2 and is emitted through the light outlet 8 of the secondary mirror 4 to be converged to the second focus of the primary mirror 2. And a part of the rest light rays which do not pass through the main mirror 2 are directly emitted through the light outlet 8, and the other part of the light rays are reflected to the main mirror 2 through the secondary mirror 4 and then are reflected again, so that the light rays are reused.

The infrared radiator 1 can generate a large amount of heat during working, the temperature of the primary mirror 2 and the temperature of the secondary mirror 4 are reduced by utilizing a natural air convection heat dissipation mode through the heat dissipation structures on the primary mirror 2 and the secondary mirror 4 made of metal materials, the working temperature of the first reflecting surface 2-1 and the second reflecting surface 4-1 is further reduced, and the service life of the reflecting mirror is prolonged.

The utility model has the characteristics of: the novel infrared radiation light source uses a high-power infrared radiator 1 as a radiation source, a curved surface reflection cavity formed by a primary mirror 1 and a secondary mirror 4 is designed by combining the structure and the light emitting characteristics of the novel infrared radiation light source, the heating core of the infrared radiator 1 is arranged on the focus of the reflection cavity, the utilization and output of light energy are realized by utilizing the geometrical optical characteristics of a first reflection surface 2-1 and a second reflection surface 4-1, the first reflection surface 2-1 is a quadric surface, and the second reflection surface 4-1 is a spherical surface. The first reflective surface 2-1 may be an ellipsoid, a paraboloid, a hyperboloid, or a compound curved surface.

The infrared radiator 1 belongs to a high-temperature heat source, and in order to reduce the temperature of the reflector, the following two measures are adopted: firstly, a heat dissipation structure 7 is designed on a primary mirror 2 and a secondary mirror 4, and the temperature of a reflector group is reduced in a passive heat dissipation mode; secondly, a certain supporting structure is designed to form an atmosphere layer 6 on the periphery of the ceramic substrate of the infrared radiator 1, so that heat transfer is slowed down. The atmosphere layer 6 helps to reduce the heat dissipation of the core heating area of the infrared radiator 1 on the one hand, and reduces the heat transfer to the primary mirror 2 on the other hand, thereby being beneficial to cooling the reflector and prolonging the service life.

Example 2

Referring to fig. 2, the present invention has another embodiment, that is, the primary mirror 2 is provided with a second through hole 2-11 penetrating through the outer wall and the first reflecting surface 2-1, a coaxial infrared radiator 1 is inserted into the second through hole 2-11, and the axis of the second through hole 2-11 is perpendicular to the axis of the primary mirror 2; in this embodiment, the outer ring of the primary mirror 2 is provided with a heat dissipation structure 7, the heat dissipation structure 7 includes a heat dissipation fin 9 disposed around the rear end of the primary mirror 2, and the structure of the secondary mirror 4 is identical to that of the previous embodiment. The infrared radiator 1 is inserted into the cavity 10 from the side wall of the primary mirror 2, the diameter of the insertion portion 1-2 is smaller than that of the second through hole 2-11, and the insertion portion 1-2 is fixedly arranged in the second through hole 2-11, so that the heat generating portion 1-3 is in the cavity 10, and the intersection point of the light emitting point 1-4 and the first reflecting surface 2-1 is overlapped. The portions not mentioned in this embodiment are the same as those in the above-described embodiment.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-power infrared radiation light source structure is characterized by comprising an infrared radiator (1) and a primary mirror (2); the front end of the main mirror (2) is a first reflecting surface (2-1) which is concave towards the interior of the main mirror, and the axis of the main mirror (2) passes through the concave center of the first reflecting surface (2-1); the primary mirror (2) is fixedly connected with a coaxial secondary mirror (4), one end of the secondary mirror (4) is a second reflecting surface (4-1) which is concave towards the inside, and the second reflecting surface (4-1) and the first reflecting surface (2-1) are opposite to form a cavity (10); the axis of the secondary mirror (4) passes through the concave center of the second reflecting surface (4-1), and the bottom of the second reflecting surface (4-1) is provided with a light outlet (8);

the first reflecting surface (2-1) is a quadric surface, and the second reflecting surface (4-1) is a spherical surface; the spherical center of the second reflecting surface (4-1) is close to the focus of the first reflecting surface (2-1);

the front end of the infrared radiator (1) penetrates through the primary mirror (2) and extends into the cavity (10), and the front end of the infrared radiator (1) is provided with a light emitting point (1-4); the light-emitting point (1-4) is superposed with the focus of the first reflecting surface (2-1).

2. A high power infrared radiation light source structure according to claim 1, characterized in that the first reflecting surface (2-1) is an ellipsoid, a paraboloid, a hyperboloid or a compound curve.

3. A high power infrared radiation light source structure according to claim 1, characterized in that the outer walls of the primary mirror (2) and the secondary mirror (4) are provided with heat dissipation structures (7); the heat dissipation structure (7) is formed by arranging heat dissipation fins (9).

4. A high power infrared radiation light source structure according to claim 1, characterized in that the infrared radiator (1) comprises a body portion (1-1), an insertion portion (1-2) and a heat generating portion (1-3) which are integrally connected, the light emitting point (1-4) is fixedly arranged in the heat generating portion (1-3); the diameter of the main body part (1-1) is larger than that of the insertion part (1-2), and the diameter of the insertion part (1-2) is larger than that of the heating part (1-3); the insertion portion (1-2) penetrates the main mirror (2), and the heat generating portion (1-3) is in the cavity (10).

5. The high-power infrared radiation light source structure according to claim 4, characterized in that the primary mirror (2) is provided with a first through hole (2-4) penetrating through the outer end surface (2-2) and the first reflecting surface (2-1), the first through hole (2-4) and the primary mirror (2) being coaxial; from the outer end face (2-2) to the first reflecting face (2-1), the first through hole (2-4) comprises a first part (2-5), a second part (2-6), a third part (2-7) and a fourth part (2-8) which are connected in sequence; the diameter of the first part (2-5) is larger than the diameter of the second part (2-6), the diameter of the second part (2-6) is larger than the diameter of the third part (2-7), and the diameter of the third part (2-7) is larger than the diameter of the fourth part (2-8);

the main body portion (1-1) is inserted into the first portion (2-5) and the second portion (2-6), and the insertion portion (1-2) passes through the third portion (2-7) and the fourth portion (2-8).

6. A high power infrared radiation light source structure according to claim 5, characterized in that the main body part (1-1) is fixed with a fixing ring (5), the fixing ring (5) and the first part (2-5) are in interference fit, and the fixing ring (5) and the main body part (1-1) are in interference fit.

7. A high power infrared radiation source structure according to claim 6, characterized in that the fixing ring (5), the outer side wall of the body part (1-1) and the inner side wall of the first part (2-5) form an atmosphere layer (6).

8. The high-power infrared radiation light source structure according to claim 4, characterized in that the primary mirror (2) is provided with a second through hole (2-11) penetrating through the outer wall and the first reflecting surface (2-1), the coaxial infrared radiator (1) is inserted into the second through hole (2-11), and the axis of the second through hole (2-11) is perpendicular to the axis of the primary mirror (2).

9. A high power infrared radiation light source structure according to claim 1, characterized in that the infrared radiator (1) is a ceramic body; the primary mirror (2) and the secondary mirror (4) are both made of aluminum alloy materials; the fixing ring (5) is made of tetrafluoro or silicon rubber.

10. A high power infrared radiation light source structure according to any one of claims 1-9, characterized in that the first reflecting surface (2-1) and the second reflecting surface (4-1) are coated with a high reflecting film.