Optical lens heat dissipation structure

Abstract

The present invention discloses a heat dissipation structure for an optical lens, which comprises: a lens assembly, a lens bracket supporting the lens assembly, a heat dissipation device for dissipating heat from the lens, and a liquid arranged in a cavity and in direct contact with the lens; the lens assembly comprises at least two lenses, a first lens and a second lens; light emitted by an internal light source of the optical lens first passes through the first lens, then passes through the second lens and then exits the lens; the lens bracket comprises a first lens bracket on which the first lens is fixed and a second lens bracket on which the second lens is fixed; the cavity is arranged between the first lens and the second lens; the liquid in the present design contacts with multiple surfaces of the lens, so that the lens has a maximum heat dissipation area, the heat of the liquid is transferred to the frame, and the heat sink arranged on the frame can dissipate the heat to maintain the overall temperature of the lens; a cooling liquid circulation heat dissipation device 32 for auxiliary heat dissipation can increase the contact area between the cooling liquid and the heat sink 31, thereby increasing the heat dissipation efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of optical lens heat dissipation, and in particular relates to an optical lens heat dissipation structure. Background Art

[0002] Viagra uses halogen light source as the illuminant, and after the light produced by it is filtered by the water filter system, the light that is easy to produce thermal effect on the skin is greatly filtered out, so that only a kind of high-energy light wave that the patient can tolerate and has great therapeutic value is retained. It can easily penetrate 7CM under the human skin to form deep treatment. We call this light Viagra. This light wave contains part of the visible light band and most of the infrared light band.

[0003] The water filtration system includes a special solution and lenses; the solution is placed between two lenses, and the light is filtered through the lenses and the solution. The original light emitted by the halogen light source will form a "rainbow window" effect after passing through the water filtration system, that is, some infrared and far-infrared light waves that are likely to cause skin burning sensation will be filtered out by this window, and what finally passes through is the "rainbow light" dominated by 580-1200nm, which is of positive significance for treatment. It will bring a "rainbow effect" of "after the rain" to human pain, tissue repair, chronic disease treatment, etc.

[0004] When the solution is placed between two lenses, the liquid temperature will increase and the volume will expand during the process of filtering light; after expansion, the lenses will be squeezed and easily deformed or even broken. The conventional solution is to increase the strength of the glass and reserve more space. Both of these solutions are caused by the insufficient heat dissipation performance of the lens's heat dissipation system. Therefore, a reasonable heat dissipation structure is needed, which can meet the requirements of a compact optical lens heat dissipation structure with good heat dissipation effect. Summary of the invention

[0005] In order to solve the problem of insufficient heat dissipation performance of the existing heat dissipation system of lenses, the present invention provides an optical lens heat dissipation structure; the structure has the characteristics of small size and good heat dissipation effect.

[0006] An optical lens heat dissipation structure comprises: a lens assembly, a lens bracket for supporting the lens assembly, a heat dissipation device for dissipating heat from the lens, and a liquid arranged in a cavity and in direct contact with the lens; the lens assembly comprises at least two lenses, a first lens and a second lens; the light emitted by the internal light source of the optical lens first passes through the first lens, then passes through the second lens and then exits the lens; the lens bracket comprises a first lens bracket to which the first lens is fixed and a second lens bracket to which the second lens is fixed; the cavity is arranged between the first lens, the second lens, the first lens bracket and the second lens bracket; the cavity comprises a first cavity and a second cavity; the first cavity The cavity is a cylindrical area arranged between the first lens and the second lens; the second cavity includes an annular area arranged around the first cavity; the liquid contained in the cavity is arranged in contact with the inner surface of the first lens, the cylindrical side surface, the inner surface of the second lens, and the cylindrical side surface; the heat dissipation device also includes a coolant circulation heat dissipation device for auxiliary heat dissipation; the coolant circulation heat dissipation device includes a pipeline arranged on the lens bracket and the heat dissipation device; the pipeline is arranged in an annular shape on the outside of the first lens bracket, and the pipeline is passed through the through hole inside the heat sink; a connecting channel is provided between the pipeline and the first lens bracket; the connecting channel connects the internal space of the pipeline with the cavity;

[0007] Furthermore, the volume of the liquid filled in the first cavity and the second cavity is 80%-100% of the sum of the volumes of the first cavity and the second cavity;

[0008] Furthermore, the side walls of the first cavity are respectively the inner surfaces of the first lens and the second lens, and a virtual cylindrical surface connected to the cylindrical surfaces of the first lens and the second lens; the side walls of the second cavity are respectively the inner side walls of the first lens holder and the second lens holder, the cylindrical side walls of the first lens and the second lens, and a virtual cylindrical surface connected to the cylindrical surfaces of the first lens and the second lens;

[0009] Furthermore, the first lens support is provided with a liquid filling port; the liquid filling port is provided on the outer surface of the first lens support on the side where the first flange is provided; the liquid filling port is a through hole provided on the first lens support, and the liquid filling port connects the cavity with the external space; the liquid filling port is provided with a sealing screw plug; the sealing screw plug is provided with threads, and is installed on the liquid filling port through threaded connection;

[0010] Furthermore, a temperature sensor is arranged on the first lens bracket; the sensor is arranged inside the sensor mounting hole; the sensor mounting hole is arranged on the side wall of the first lens bracket;

[0011] Furthermore, the heat dissipation device comprises a heat sink; the heat sink is arranged on the outside of the lens bracket in a fin shape and is fixedly connected to the lens bracket; the heat sink is composed of a plurality of fin units;

[0012] . According to the optical lens heat dissipation structure described in claim, it is characterized in that: the fin unit is in the shape of a sheet, and the fin unit is provided with an internal fixing part and an external fixing part; the fin unit is made of aluminum material by stamping, and the internal fixing part is in the shape of a rectangular sheet and is integrally arranged with the fin unit, and is rectangular as a whole and is arranged vertically with the fin unit; the external fixing part is arranged vertically with the fin, and is provided with mutually buckled buckles on the external fixing part for fixing and connecting adjacent fins; the fin unit of the heat sink is mutually buckled and connected through the external fixing part, and then is welded and fixed to the outer surface of the first lens bracket through the internal fixing part;

[0013] Furthermore, the first lens holder is annular, and one end of the inner surface is provided with a first flange for fixing the first lens; a groove is provided between the first flange and the inner side wall of the first lens holder; the first lens is in the shape of a circular sheet, and a coating is provided on the inner surface; the outer surface of the first lens and the first flange on the inner surface of the first lens holder are bonded and fixed to each other; the second lens holder is in the shape of an annular gasket, and the inner edge is provided with a second flange protruding to one side; the second lens holder is fixed to the other end of the first lens holder, and the second flange protrudes inwardly and is arranged facing the first flange; the second lens is in the shape of a circular sheet, and the outer surface and the second flange are fixed to each other; the height of the inner side surface of the first lens from the bottom of the groove of the first lens holder is greater than the height of the inner side surface of the second lens from the inner surface of the second lens holder.

[0014] The present invention provides an optical lens heat dissipation structure, which comprises: a lens assembly, a lens bracket for supporting the lens assembly, a heat dissipation device for dissipating heat from the lens, and a liquid arranged in a cavity and in direct contact with the lens; the lens assembly comprises at least two lenses, a first lens and a second lens; the light emitted by the internal light source of the optical lens first passes through the first lens, then passes through the second lens and then exits the lens; the lens bracket comprises a first lens bracket respectively fixed with the first lens and a second lens bracket fixed with the second lens; the cavity is arranged between the first lens and the second lens;

[0015] The liquid in this design contacts multiple surfaces of the lens, so that the lens has a maximum heat dissipation area. The heat of the liquid is transferred to the frame, and the heat sink 31 provided on the frame can dissipate the heat to maintain the overall temperature of the lens.

[0016] When the lens is working, the temperature sensor will detect the temperature of the frame in real time, and then feed it back to the cooling fan, which will dissipate heat and cool down the lens.

[0017] In this design, the cooled liquid only fills part of the cavity, leaving some volume, which can avoid squeezing the lens due to the thermal expansion of the liquid, and prevent the lens from breaking and deforming.

[0018] The liquid used in this design can both filter light and cool the lens and circulate heat.

[0019] The cooling liquid circulation heat dissipation device 32 for auxiliary heat dissipation in the present design can increase the contact area between the cooling liquid and the heat sink 31, thereby increasing the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view of a heat dissipation structure of an optical lens;

[0021] Figure 2 It is an AA cross-sectional view of a heat dissipation structure of an optical lens;

[0022] Figure 3 It is a BB cross-sectional view of a heat dissipation structure of an optical lens;

[0023] Figure 4 This is a CC cross-sectional view of an optical lens heat dissipation structure. DETAILED DESCRIPTION Example 1

[0024] Please see attached Figure 1-3 , an optical lens heat dissipation structure, comprising: a lens assembly 1, a lens bracket 2 for supporting the lens assembly, a heat dissipation device 3 for dissipating heat from the lens, and a liquid in direct contact with the lens;

[0025] The lens assembly 1 comprises at least two lenses, a first lens 11 and a second lens 12;

[0026] The light emitted by the internal light source of the optical lens first passes through the first lens 11, then passes through the second lens 12 and then exits the lens;

[0027] The lens bracket 2 comprises a first lens bracket 21 to which the first lens 11 is fixed and a second lens bracket 22 to which the second lens 12 is fixed;

[0028] A cavity 13 for containing liquid is provided between the first lens 11 and the second lens 12;

[0029] The first lens 11 is in the shape of a circular sheet, and a coating is provided on the inner surface;

[0030] The first lens support 21 is annular, and one end of the inner surface is provided with a first flange 211 for fixing the first lens;

[0031] A groove 212 is provided between the first flange 211 and the inner side wall of the first lens holder 21;

[0032] The cross section of the first flange 211 is L-shaped, and one side of the first flange 211 is fixedly disposed with the inner surface of the first lens frame 21;

[0033] The other side of the first flange 211 is arranged in the same direction as the first lens frame 21 in the axial direction;

[0034] The outer surface of the first lens 21 and the first flange 211 are bonded and fixed to each other;

[0035] The second lens support 22 is in the shape of an annular gasket, and the inner edge thereof is provided with a second flange 221 protruding toward one side;

[0036] The second lens bracket 22 is fixed to the other end of the first lens bracket 21, and the second flange 221 protrudes inwards and is disposed facing the first flange 211;

[0037] The second lens 12 is in the shape of a circular sheet, and the outer surface is fixedly arranged with the second flange 221;

[0038] The inner side surface of the second lens 12 is disposed close to the first lens 21;

[0039] A cavity 13 for containing liquid is provided between the first lens 11, the second lens 12, the first lens bracket 21, and the second lens bracket 22;

[0040] The height of the inner side surface of the first lens 11 from the bottom of the groove 212 of the first lens holder 21 is greater than the height of the inner side surface of the second lens 12 from the inner surface of the second lens holder 22;

[0041] The cavity 13 includes a first cavity 131 and a second cavity 132;

[0042] The first cavity 131 is a cylindrical area disposed between the first lens 11 and the second lens 12;

[0043] The side walls of the first cavity 131 are respectively the inner surfaces of the first lens 11 and the second lens 12, and a virtual cylindrical surface connected to the cylindrical surfaces of the first lens 11 and the second lens 12;

[0044] The second cavity 132 includes an annular area arranged around the first cavity 131;

[0045] The side walls of the second cavity 132 are respectively the inner side walls of the first lens holder 21, the second lens holder 22, the cylindrical side walls of the first lens 11, the second lens 12, and the virtual cylindrical surface connected to the cylindrical surfaces of the first lens 11, the second lens 12;

[0046] The cavity 13 is filled with liquid and is in contact with the inner surface of the first lens 11, the cylindrical side surface, the inner surface of the second lens 12, and the cylindrical side surface;

[0047] The volume of the liquid filled in the first cavity 131 and the second cavity 132 is 80%-100% (not including 100%) of the sum of the volumes of the first cavity 131 and the second cavity 132;

[0048] The first lens support 21 is provided with a liquid filling port 216;

[0049] The liquid filling port 216 is disposed on the outer surface of the first lens holder 21 on the side where the first flange 211 is disposed;

[0050] The liquid filling port 216 is a through hole provided on the first lens support 21, and the liquid filling port 216 connects the cavity 13 with the external space;

[0051] The liquid filling port 216 is provided with a sealing screw plug 215;

[0052] The sealing screw plug 215 is provided with threads and is installed on the liquid filling port 216 through threaded connection;

[0053] The first lens bracket 21 is provided with a temperature sensor 213;

[0054] The sensor 213 is arranged inside the sensor mounting hole;

[0055] The sensor mounting hole is arranged on the side wall of the first lens bracket 21;

[0056] The heat dissipation device 3 includes a heat sink 31;

[0057] The heat sink 31 is fin-shaped and arranged on the outside of the lens bracket 2, and is fixedly connected to the frame;

[0058] The heat sink 31 is formed by splicing a plurality of fin units.

[0059] The fin unit is in the shape of a sheet, and is provided with an internal fixing portion 3111 and an external fixing portion 3112;

[0060] The fin unit is made of aluminum material by stamping, and the internal fixing portion 3111 is in the shape of a rectangular sheet and is integrally arranged with the fin unit. The overall shape is rectangular and is arranged vertically with the fin unit.

[0061] The external fixing part 3112 is arranged perpendicular to the fins, and buckles that engage with each other are provided on the external fixing part to fix and connect adjacent fins;

[0062] The fin units of the heat sink 31 are mutually buckled and connected through the external fixing part 3112 and then welded and fixed to the outer surface of the first lens bracket 21 through the internal fixing part 3111;

[0063] When in use, the design is installed in the lens, the first lens 11 is arranged facing the light source; the second lens 12 is arranged away from the light source; the light emitted by the light source first passes through the first lens 11, and then passes through the second lens 12 before emitting from the lens; after the light passing through the lens assembly is filtered, part of the heat is retained in the lens and the liquid; the lens is wrapped in the liquid, the heat of the lens is absorbed by the liquid, the liquid contacts the inner wall of the lens bracket 2, the heat is transferred to the lens bracket 2, and the lens bracket 2 dissipates the heat through the heat dissipation device 3.

[0064] The liquid in this design contacts multiple surfaces of the lens, so that the lens has a maximum heat dissipation area. The heat of the liquid is transferred to the frame, and the heat sink 31 provided on the frame can dissipate the heat to maintain the overall temperature of the lens.

[0065] When the lens is working, the temperature sensor will detect the temperature of the frame in real time, and then feed it back to the cooling fan, which will dissipate heat and cool down the lens.

[0066] In this design, the cooled liquid only fills part of the cavity, leaving some volume, which can avoid squeezing the lens due to the thermal expansion of the liquid, and prevent the lens from breaking and deforming.

[0067] The liquid used in this design can both filter light and cool the lens and circulate heat. Example 2

[0068] Please see attached Figure 2-4 , an optical lens heat dissipation structure, comprising: a lens assembly 1, a lens bracket 2 for supporting the lens assembly, a heat dissipation device 3 for dissipating heat from the lens, and a liquid in direct contact with the lens;

[0069] The lens assembly 1 comprises at least two lenses, a first lens 11 and a second lens 12;

[0070] The light emitted by the internal light source of the optical lens first passes through the first lens 11, then passes through the second lens 12 and then exits the lens;

[0071] The lens bracket 2 comprises a first lens bracket 21 to which the first lens 11 is fixed and a second lens bracket 22 to which the second lens 12 is fixed;

[0072] A cavity 13 for containing liquid is provided between the first lens 11 and the second lens 12;

[0073] The first lens 11 is in the shape of a circular sheet, and a coating is provided on the inner surface;

[0074] The first lens support 21 is annular, and one end of the inner surface is provided with a first flange 211 for fixing the first lens;

[0075] A groove 212 is provided between the first flange 211 and the inner side wall of the first lens holder 21;

[0076] The cross section of the first flange 211 is L-shaped, and one side of the first flange 211 is fixedly disposed with the inner surface of the first lens frame 21;

[0077] The other side of the first flange 211 is arranged in the same direction as the first lens frame 21 in the axial direction;

[0078] The outer surface of the first lens 21 and the first flange 211 are bonded and fixed to each other;

[0079] The second lens support 22 is in the shape of an annular gasket, and the inner edge thereof is provided with a second flange 221 protruding toward one side;

[0080] The second lens bracket 22 is fixed to the other end of the first lens bracket 21, and the second flange 221 protrudes inwards and is disposed facing the first flange 211;

[0081] The second lens 12 is in the shape of a circular sheet, and the outer surface is fixedly arranged with the second flange 221;

[0082] The inner side surface of the second lens 12 is disposed close to the first lens 21;

[0083] A cavity 13 for containing liquid is provided between the first lens 11, the second lens 12, the first lens bracket 21, and the second lens bracket 22;

[0084] The height of the inner side surface of the first lens 11 from the bottom of the groove 212 of the first lens holder 21 is greater than the height of the inner side surface of the second lens 12 from the inner surface of the second lens holder 22;

[0085] The cavity 13 includes a first cavity 131 and a second cavity 132;

[0086] The first cavity 131 is a cylindrical area disposed between the first lens 11 and the second lens 12;

[0087] The side walls of the first cavity 131 are respectively the inner surfaces of the first lens 11 and the second lens 12, and a virtual cylindrical surface connected to the cylindrical surfaces of the first lens 11 and the second lens 12;

[0088] The second cavity 132 includes an annular area arranged around the first cavity 131;

[0089] The side walls of the second cavity 132 are respectively the inner side walls of the first lens holder 21, the second lens holder 22, the cylindrical side walls of the first lens 11, the second lens 12, and the virtual cylindrical surface connected to the cylindrical surfaces of the first lens 11, the second lens 12;

[0090] The cavity 13 is filled with liquid and is in contact with the inner surface of the first lens 11, the cylindrical side surface, the inner surface of the second lens 12, and the cylindrical side surface;

[0091] The volume of the liquid filled in the first cavity 131 and the second cavity 132 is 80%-100% (not including 100%) of the sum of the volumes of the first cavity 131 and the second cavity 132;

[0092] The first lens support 21 is provided with a liquid filling port 216;

[0093] The liquid filling port 216 is disposed on the outer surface of the first lens holder 21 on the side where the first flange 211 is disposed;

[0094] The liquid filling port 216 is a through hole provided on the first lens support 21, and the liquid filling port 216 connects the cavity 13 with the external space;

[0095] The liquid filling port 216 is provided with a sealing screw plug 215;

[0096] The sealing screw plug 215 is provided with threads and is installed on the liquid filling port 216 through threaded connection;

[0097] The first lens bracket 21 is provided with a temperature sensor 213;

[0098] The sensor 213 is arranged inside the sensor mounting hole;

[0099] The sensor mounting hole is arranged on the side wall of the first lens bracket 21;

[0100] The heat dissipation device 3 includes a heat sink 31;

[0101] The heat sink 31 is fin-shaped and arranged on the outside of the lens bracket 2, and is fixedly connected to the frame;

[0102] The heat sink 31 is formed by splicing a plurality of fin units.

[0103] The fin unit is in the shape of a sheet, and is provided with an internal fixing portion 3111 and an external fixing portion 3112;

[0104] The fin unit is made of aluminum material by stamping, and the internal fixing portion 3111 is in the shape of a rectangular sheet and is integrally arranged with the fin unit. The overall shape is rectangular and is arranged vertically with the fin unit.

[0105] The external fixing part 3112 is arranged perpendicular to the fins, and buckles that engage with each other are provided on the external fixing part to fix and connect adjacent fins;

[0106] The fin units of the heat sink 31 are mutually buckled and connected through the external fixing part 3112 and then welded and fixed to the outer surface of the first lens bracket 21 through the internal fixing part 3111;

[0107] The heat dissipation device 3 also includes a coolant circulation heat dissipation device 32 for auxiliary heat dissipation;

[0108] The cooling liquid circulation heat dissipation device 32 comprises a pipe 321 arranged on the lens support 2 and the heat dissipation device 3;

[0109] The pipe 321 is annularly arranged on the outside of the first lens bracket 21, and passes through the through hole 301 inside the heat sink 31;

[0110] A connecting channel 322 is provided between the pipe 321 and the first lens bracket 21;

[0111] The connecting channel 322 connects the inner space of the pipe 321 and the cavity 13 to each other.

[0112] When in use, the design is installed in the lens, the first lens 11 is arranged facing the light source; the second lens 12 is arranged away from the light source; the light emitted by the light source first passes through the first lens 11, and then passes through the second lens 12 before emitting from the lens; after the light passing through the lens assembly is filtered, part of the heat is retained in the lens and the liquid; the lens is wrapped in the liquid, the heat of the lens is absorbed by the liquid, the liquid contacts the inner wall of the lens bracket 2, the heat is transferred to the lens bracket 2, and the lens bracket 2 dissipates the heat through the heat dissipation device 3.

[0113] The liquid in this design contacts multiple surfaces of the lens, so that the lens has a maximum heat dissipation area. The heat of the liquid is transferred to the frame, and the heat sink 31 provided on the frame can dissipate the heat to maintain the overall temperature of the lens.

[0114] When the lens is working, the temperature sensor will detect the temperature of the frame in real time, and then feed it back to the cooling fan, which will dissipate heat and cool down the lens.

[0115] In this design, the cooled liquid only fills part of the cavity, leaving some volume, which can avoid squeezing the lens due to the thermal expansion of the liquid, and prevent the lens from breaking and deforming.

[0116] The liquid used in this design can both filter light and cool the lens and circulate heat.

[0117] The cooling liquid circulation heat dissipation device 32 for auxiliary heat dissipation in the present design can increase the contact area between the cooling liquid and the heat sink 31, thereby increasing the heat dissipation efficiency.

[0118] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An optical lens heat dissipation structure, characterized in that: It includes: A lens assembly (1), a lens bracket (2) for supporting the lens assembly, a heat dissipation device (3) for dissipating heat from the lens, and a liquid arranged in a cavity (13) and in direct contact with the lens; the lens assembly (1) comprises at least two lenses, a first lens (11) and a second lens (12); the light emitted by the internal light source of the optical lens first passes through the first lens (11), then passes through the second lens (12) and then exits the lens; the lens bracket (2) comprises a first lens bracket (21) to which the first lens (11) is fixed, and a second lens bracket (22) to which the second lens (12) is fixed; the cavity (13) is arranged between the first lens (11), the second lens (12), the first lens bracket (21) and the second lens bracket (22); the cavity (13) comprises a first cavity (131) and a second cavity (132); the first cavity (131) is arranged between the first lens (11) and the second lens bracket (12); ), and a cylindrical area between the first lens (11) and the second lens (12); the second cavity (132) includes an annular area arranged around the first cavity (131); the cavity (13) is filled with liquid and is arranged in contact with the inner surface of the first lens (11), the cylindrical side surface, the inner surface of the second lens (12), and the cylindrical side surface; the heat dissipation device (3) also includes a coolant circulation heat dissipation device (32) for auxiliary heat dissipation; the coolant circulation heat dissipation device (32) includes a pipe (321) arranged on the lens holder (2) and the heat dissipation device (3); the pipe (321) is arranged in an annular shape on the outer side of the first lens holder (21), and the pipe is passed through a through hole (301) inside the heat sink (31); a connecting channel (322) is provided between the pipe (321) and the first lens holder (21); the connecting channel (322) connects the internal space of the pipe (321) with the cavity (13).

2. The optical lens heat dissipation structure according to claim 1, characterized in that: The volume of the liquid filled in the first cavity (131) and the second cavity (132) is 80%-100% of the sum of the volumes of the first cavity (131) and the second cavity (132).

3. The optical lens heat dissipation structure according to claim 2, characterized in that: The side walls of the first cavity (131) are respectively the inner surfaces of the first lens (11) and the second lens (12), and a virtual cylindrical surface connected to the cylindrical surfaces of the first lens (11) and the second lens (12); the side walls of the second cavity (132) are respectively the inner side walls of the first lens holder (21) and the second lens holder (22), the cylindrical side walls of the first lens (11) and the second lens (12), and a virtual cylindrical surface connected to the cylindrical surfaces of the first lens (11) and the second lens (12).

4. The optical lens heat dissipation structure according to claim 3, characterized in that: The first lens holder (21) is provided with a liquid filling port (216); the liquid filling port (216) is provided on the outer surface of the first lens holder (21) on a side where the first flange (211) is provided; the liquid filling port (216) is a through hole provided on the first lens holder (21), and the liquid filling port (216) connects the cavity (13) with the external space; the liquid filling port (216) is provided with a sealing screw plug (215); the sealing screw plug (215) is provided with a thread and is installed on the liquid filling port (216) through a threaded connection.

5. The optical lens heat dissipation structure according to claim 4, characterized in that: The first lens bracket (21) is provided with a temperature sensor (213); the sensor (213) is arranged inside the sensor installation hole; the sensor installation hole is arranged on the side wall of the first lens bracket (21).

6. The optical lens heat dissipation structure according to claim 5, characterized in that: The heat dissipation device (3) comprises a heat sink (31); the heat sink (31) is arranged on the outside of the lens bracket (2) in a fin shape and is fixedly connected to the lens bracket (2); the heat sink (31) is composed of a plurality of fin units spliced ​​together.

7. The optical lens heat dissipation structure according to claim 6, characterized in that: The fin unit is in the shape of a sheet, and is provided with an internal fixing part (3111) and an external fixing part (3112); the fin unit is made of aluminum material by stamping, and the internal fixing part (3111) is in the shape of a rectangular sheet and is integrally arranged with the fin unit, and is rectangular as a whole and is arranged perpendicular to the fin unit; the external fixing part (3112) is arranged perpendicular to the fin, and is provided with buckles that interlock with each other for fixing and connecting adjacent fins; the fin unit of the heat sink (31) is mutually buckled and connected through the external fixing part (3112), and then is welded and fixed to the outer surface of the first lens bracket (21) through the internal fixing part (3111).

8. The optical lens heat dissipation structure according to claim 7, characterized in that: The first lens holder (21) is annular, and one end of the inner surface is provided with a first flange (211) for fixing the first lens; a groove (212) is provided between the first flange (211) and the inner side wall of the first lens holder (21); the first lens (11) is in the shape of a circular sheet, and a coating is provided on the inner surface; the outer surface of the first lens (21) and the first flange (211) on the inner surface of the first lens holder (21) are bonded and fixed to each other; the second lens holder (22) is in the shape of an annular gasket, and the inner edge is provided with a protruding portion toward one side. The second lens support (22) is fixed to the other end of the first lens support (21), and the second flange (221) protrudes inwards and is arranged facing the first flange (211); the second lens (12) is in the shape of a circular sheet, and the outer surface and the second flange (221) are fixed to each other; the height of the inner side surface of the first lens (11) from the bottom of the groove (212) of the first lens support (21) is greater than the height of the inner side surface of the second lens (12) from the inner surface of the second lens support (22).

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