Collimator and laser

Abstract

The embodiment of the utility model belongs to the technical field of optical equipment, and relates to a collimator and a laser, and the collimator comprises a diaphragm group, a pressing ring, a cooling seat and a connecting piece. The connecting piece is fixedly connected with the cooling seat; a first mounting through groove is formed in the cooling seat, the diaphragm group and the pressing ring are sequentially arranged in the first mounting through groove in the light path direction, and the diaphragm group is fixed by the pressing ring; the diaphragm group comprises a first diaphragm and a second diaphragm which are arranged in a stacked mode, the first diaphragm abuts against the pressing ring, a cooling groove adjacent to the diaphragm group is formed in the cooling base, and a cooling medium used for cooling the diaphragm group is contained in the cooling groove. According to the invention, heat generated when the straightener works can be effectively dissipated, and dust is prevented from influencing components in the straightener.

Description

Technical Field

[0001] The present application relates to the technical field of optical equipment, and more specifically, to a collimator and a laser. Background Art

[0002] A collimator is an optical device used to adjust the direction of input light to form parallel light. It generally includes a heat sink, a heat sink, a pressure ring, an aperture, a connector and an input connector. The input connector and the heat sink are connected by the connector, and a mounting groove is opened in the heat sink to fix the heat sink in the mounting groove. At the same time, a pressure ring and an aperture are sequentially arranged in the cavity formed in the heat sink so that the light hole on the aperture corresponds to the light incident hole on the input connector. When the input connector is connected to the light source, the light emitted by the light source enters the aperture through the light incident hole. The aperture adjusts the direction of the light through its structure and reflects the light diverging in different directions into the cavity formed by the heat sink, so that the light finally forms collimated parallel light.

[0003] When the above collimator is in use, since the light is reflected in the cavity of the aperture and the heat sink, a large amount of heat will accumulate on the heat sink and the aperture. The heat is generally transferred to the heat sink through the heat sink, and then transferred to the outside by the heat sink, thereby forming heat dissipation. However, when the above structure is used for heat dissipation, the heat dissipation efficiency of the heat sink and the heat sink is not high, and the heat of the aperture inside the collimator is still high, which causes the laser to issue a temperature alarm and also affects the normal operation of the internal components of the collimator. In addition, during the use of the collimator, dust can easily enter the aperture from the outside, causing the lens set below the aperture to be affected by the dust. In severe cases, the lens may be burned, which is not conducive to the normal use of the collimator. Utility Model Content

[0004] The technical problem to be solved by the embodiments of the present application is how to effectively dissipate heat and cool the collimator and prevent dust from entering.

[0005] In order to solve the above technical problems, the present application provides a collimator, which adopts the following technical solution:

[0006] A collimator comprises: an aperture group, a pressure ring, a cooling seat and a connecting piece;

[0007] The connecting piece is fixedly connected to the cooling seat;

[0008] The cooling seat is provided with a first mounting groove, the aperture group and the pressure ring are sequentially arranged in the first mounting groove along the optical path direction, and the pressure ring fixes the aperture group;

[0009] The aperture group includes a first aperture and a second aperture which are stacked, the first aperture abuts against the pressure ring, the cooling seat is provided with a cooling groove adjacent to the aperture group, and the cooling groove contains a cooling medium for cooling the aperture group.

[0010] Furthermore, a first light-through hole is formed on the first diaphragm, a second light-through hole is formed on the second diaphragm, and the first light-through hole and the second light-through hole are coaxially arranged and spaced apart.

[0011] Furthermore, the first aperture includes a first flat plate portion and a supporting portion connected to each other, the supporting flat plate portion is in contact with the second aperture, the first light-transmitting hole is arranged in the first flat plate portion, and the first light-transmitting hole gradually narrows in the light path direction to form a first light-receiving surface.

[0012] Further, the second aperture includes a second flat plate portion and a tapered portion connected to each other, and the second flat plate portion abuts against the supporting portion;

[0013] The second light-through hole is arranged in the tapered portion, and the outer peripheral surface of the tapered portion is arranged toward the first flat plate portion to form a second light-receiving surface.

[0014] Furthermore, the second light-through hole gradually expands along the light path direction, and the minimum aperture of the first light-through hole is greater than the minimum aperture of the second light-through hole.

[0015] Furthermore, the first flat plate portion and the second flat plate portion are parallel, and a receiving cavity is formed between the first flat plate portion, the supporting portion, the second flat plate portion and the tapered portion.

[0016] Furthermore, the pressure ring, the support portion and the second flat plate portion are all against the inner side wall of the first installation groove.

[0017] Furthermore, the collimator further comprises an input connector, the connecting member is provided with a second mounting through slot, and the input connector portion is disposed in the second mounting through slot and fixedly connected to the connecting member.

[0018] Furthermore, a horizontal depth of the cooling groove on the cooling seat is greater than or equal to a horizontal depth of the first mounting through groove on the cooling seat.

[0019] In order to solve the above technical problems, an embodiment of the present application further provides a laser, which adopts the collimator as described above.

[0020] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0021] In this embodiment, a collimator including an aperture group, a pressure ring, a cooling seat and a connecting piece is provided, the connecting piece is fixedly connected to the cooling seat, a first mounting groove is provided on the cooling seat, the pressure ring and the aperture group are sequentially provided in the first mounting groove along the optical path direction, so that the first aperture and the second aperture of the aperture group are stacked, and a cooling groove adjacent to the aperture group is provided on the cooling seat, so that when light passes through the aperture group, the heat generated is accumulated in the aperture group, and the heat transferred from the first mounting groove is eliminated by the cooling medium contained in the cooling groove, so as to achieve effective heat dissipation of the heat generated when the collimator is working; at the same time, when external dust enters the aperture group, it will be blocked in the aperture group, so as to effectively protect the components in the collimator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the cross-sectional structure of the collimator of the present application along the center line of the aperture group;

[0024] Figure markings: aperture group 1, pressure ring 2, cooling seat 3, connecting part 4, input connector 5, first aperture 11, second aperture 12, accommodating cavity 13, first mounting groove 31, cooling groove 32, second mounting groove 41, first light-transmitting hole 111, first flat plate portion 112, supporting portion 113, second light-transmitting hole 121, second flat plate portion 122, conical portion 123, first light-receiving surface 111a, second light-receiving surface 123a, first minimum aperture A1, second minimum aperture A2. DETAILED DESCRIPTION

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0026] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] refer to Figure 1 , the collimator of the present application comprises: an aperture group 1, a pressure ring 2, a cooling seat 3 and a connecting piece 4;

[0028] The connecting member 4 is fixedly connected to the cooling seat 3;

[0029] The cooling seat 3 is provided with a first mounting groove 31, the aperture group 1 and the pressure ring 2 are sequentially arranged in the first mounting groove 31 along the optical path direction, and the pressure ring 2 fixes the aperture group 1;

[0030] The aperture group 1 includes a first aperture 11 and a second aperture 12 which are stacked. The first aperture 11 is in contact with the pressure ring 2. The cooling seat 3 is provided with a cooling groove 32 which is adjacent to the aperture group 1. The cooling groove 32 contains a coolant for cooling the aperture group 1.

[0031] In this embodiment, the first mounting groove 31 on the cooling seat 3 is opened in the middle position of the cooling seat 3 and is arranged as a groove with a circular cross-section. The cooling groove 32 is arranged on the circumferential outer side of the first mounting groove 31. In specific implementation, the cooling groove 32 can be arranged as a circular arc groove with a certain length in cross-section, and the center of the circle corresponding to the circular arc groove is the same as the center of the circle corresponding to the first mounting groove 31.

[0032] In this embodiment, a collimator including an aperture group 1, a pressure ring 2, a cooling seat 3 and a connecting member 4 is provided, which is fixedly connected to the cooling seat 3 through the connecting member 4, and a first mounting groove 31 is provided on the cooling seat 3, and the pressure ring 2 and the aperture group 1 are sequentially arranged in the first mounting groove 31 along the optical path direction, so that the first aperture 11 and the second aperture 12 of the aperture group 1 are stacked, and then a cooling groove 32 adjacent to the aperture group 1 is provided on the cooling seat 3, so that when light passes through the aperture group 1, the heat generated is accumulated in the aperture group 1, and then the heat transferred from the first mounting groove 31 is eliminated by the cooling medium contained in the cooling groove 32, so as to achieve effective heat dissipation of the heat generated when the collimator is working; at the same time, when external dust enters the aperture group 1, it will be blocked in the aperture group 1, so as to effectively protect the components in the collimator.

[0033] In an optional embodiment of the present embodiment, a first light-through hole 111 is formed on the first aperture 11, a second light-through hole 121 is formed on the second aperture 12, and the first light-through hole 111 and the second light-through hole 121 are coaxially arranged and spaced apart.

[0034] In this embodiment, the first light hole 111 is located above the second light hole 121, the central axis of the first light hole 111 coincides with the central axis of the second light hole 121, the first light hole 111 and the second light hole 121 are parallel, and the first light hole 111 and the second light hole 121 are spaced apart by a predetermined distance in the axial direction.

[0035] In this embodiment, the first aperture 11 is arranged above the second aperture 12, and the first light hole 111 and the second light hole 121 are coaxially spaced apart, so that an effective light path is formed between the first light hole 111 and the second light hole 121, so that when the collimator is working, light enters the space between the first light hole 111 and the second light hole 121, and is finally reflected and absorbed by the first aperture 11 and the second aperture 12, so that the generated heat is concentrated in the aperture group 1, which is convenient for the cooling medium in the cooling groove 32 to cool and dissipate the heat.

[0036] In another optional embodiment of the present embodiment, the first aperture 11 includes a first flat plate portion 112 and a supporting portion 113 connected to each other, the supporting portion 113 abuts against the second aperture, the first light hole 111 is arranged on the first flat plate portion 112, and the first light hole 111 gradually narrows in the light path direction to form a first light receiving surface 111a.

[0037] In this embodiment, the support portion 113 is arranged perpendicularly to the first flat portion 112, and the support portion 113 is formed by extending downward from the bottom of the first flat portion 112. The extension direction of the support portion 113 is parallel to the axial direction of the first mounting slot 31. The first light receiving surface 111a of the first light through hole 111 faces the side of the pressing ring 2. The pressing ring 2 also forms a hollow cavity above the first flat portion 112. After being irradiated by the light from above the pressing ring 2, the first light receiving surface 111a reflects the light into the hollow cavity and is finally absorbed by the upper end surface of the first aperture 11. In this embodiment, the first light through hole 111 is opened on the first aperture 11, so that when the light enters the aperture group 1, it first contacts the first light receiving surface 111a of the first light through hole 111, so as to effectively limit the direction of the light.

[0038] In another optional embodiment of the present embodiment, the second aperture 12 includes a second flat plate portion 122 and a tapered portion 123 connected to each other, and the second flat plate portion 122 abuts against the support portion;

[0039] The second light-through hole 121 is disposed in the tapered portion 123 , and the outer peripheral surface of the tapered portion 123 is disposed toward the first flat plate portion 112 to form a second light-receiving surface 123 a .

[0040] In this embodiment, the conical portion 123 is arranged in the middle position of the second flat portion 122. The conical portion 123 is formed by a conical protrusion protruding upward from the second flat portion 122. The inner side of the conical portion 123 is hollow, and the top of the protruding part of the conical portion 123 extends obliquely toward the bottom of the inner side of the conical portion 123 to form an inner inclined surface. The hollow part between the inner inclined surfaces forms the second light-through hole 121. The second light-receiving surface 123a is formed on the outer peripheral surface of the conical portion 123 away from the inner inclined surface. The conical portion 123 receives light incident from the top of the pressure ring 2 through the second light-receiving surface 123a. In this embodiment, the conical portion 123 is connected to the second flat portion 122, and a second light hole 121 is provided on the conical portion 123, so as to effectively limit the light passing through the first light hole 111, and reflect the light passing through the first light hole 111 through the second light receiving surface 123a, so as to reflect the light to the side opposite to the first aperture 11 and the second aperture 12 for absorption.

[0041] In another optional embodiment of the present embodiment, the second light-through hole 121 gradually expands along the light path direction, and the minimum aperture A1 of the first light-through hole 111 is larger than the minimum aperture A2 of the second light-through hole 121 .

[0042] In this embodiment, the first light hole 111 is inclined inwardly extending from top to bottom, and the second light hole 121 is inclined outwardly extending from top to bottom. Therefore, the first minimum aperture A1 portion of the first light hole 111 is located at the bottom of the first light hole 111, and the second minimum aperture A2 portion of the second light hole 121 is located at the top of the second light hole 121. Since the first light hole 111 is located above the second light hole 121, the portion of the first light hole 111 having the first minimum aperture A1 It is adjacent to the portion having the second minimum aperture A2 on the second light hole 121. When the first minimum aperture A1 is larger than the second minimum aperture A2, the edge of the light passing through the first minimum aperture A1 portion of the first light hole 111 will be blocked by the outer side of the second minimum aperture A2 portion of the second light hole 121. Similarly, dust passing through the first minimum aperture A1 portion of the first light hole 111 will also be blocked by the outer side of the second minimum aperture A2 portion of the second light hole 121, thereby limiting the direction of the light and protecting against dust.

[0043] In another optional embodiment of the present embodiment, the first flat plate portion 112 and the second flat plate portion 122 are parallel, and the accommodating cavity 13 is formed among the first flat plate portion 112 , the supporting portion 113 , the second flat plate portion 122 and the tapered portion 123 .

[0044] In this embodiment, the first flat plate portion 112 and the second flat plate portion 122 are arranged in parallel to form a receiving cavity 13 between the first flat plate portion 112, the supporting portion 113, the second flat plate portion 122 and the conical portion 123, so that after the light enters the aperture group 1, it can be reflected into the receiving cavity 13 to effectively concentrate the heat generated by the light, and at the same time, dust can be effectively blocked in this part to form a restriction on the movement of dust.

[0045] In this embodiment, the included angle between the second light receiving surface 123a and the second flat plate portion 122 is 120 degrees, and the included angle can be set according to actual conditions. In this embodiment, a second light receiving surface 123a having an obtuse angle with the second flat plate portion 122 is formed on the outer side of the conical portion 123, thereby effectively reflecting the light falling on the second light receiving surface 123a into the accommodating cavity 13, and at the same time, dust falling on the second light receiving surface 123a can be blocked in the accommodating cavity 13 to avoid affecting the operation of components inside the collimator.

[0046] In another optional embodiment of the present embodiment, the pressing ring 2 , the supporting portion 113 , and the second flat plate portion 122 are all against the inner side wall of the first installation slot 31 .

[0047] In this embodiment, the pressure ring 2 is arranged above the first aperture 11 and abuts against the top of the first aperture 12. The radial outer sides of the first aperture 11 and the second aperture 12 are adapted to the inner diameter of the first mounting groove 31 to achieve radial position fixation of the first aperture 11 and the second aperture 12. The pressure ring 2 is fixed to the cooling seat 3 by threaded connection or glue fixation to form a position fixation between the pressure ring 2 and the cooling seat 3. By fixing the pressure ring 2 on the cooling seat 3, the axial position fixation of the first aperture 11 and the second aperture 12 in the first mounting groove 31 is effectively achieved.

[0048] In this embodiment, a pressure ring is provided on the first flat plate portion 112 of the first aperture 11, thereby effectively achieving radial position fixation of the first aperture 11 and the second aperture 12, and the pressure ring 2, the support portion 113 and the second flat plate portion 122 are arranged to abut against the inner wall of the first mounting groove 31, thereby effectively fixing the axial position of the pressure ring 2, the first aperture 11 and the second aperture 12, thereby preventing the collimator from vibrating or shaking during use, resulting in misalignment between the first aperture 11 and the second aperture 12 or loosening of the pressure ring 2, thereby effectively improving the stability of the device.

[0049] In another optional embodiment of the present embodiment, the collimator further includes an input connector 5 , the connecting member 4 is provided with a second mounting slot 41 , and a portion of the input connector 5 is disposed in the second mounting slot 41 and fixedly connected to the connecting member 4 .

[0050] In this embodiment, the connector 4 is fixed on the cooling seat 3, one end of the input connector 5 is connected to a light source emitting a light beam, a collimating lens is arranged below the aperture group 1, and the direction of the light path is from one end of the input connector 5 to one end of the aperture group 1. In this embodiment, the cooling seat 3 and the input connector 5 are connected and fixed by arranging the connector 4, so that the relative position between the input connector 5 and the aperture group 1 does not change, and the incident light can effectively be ensured to enter the aperture group 1.

[0051] In another optional embodiment of the present embodiment, a horizontal depth of the cooling groove 32 on the cooling seat 3 is greater than or equal to a horizontal depth of the first mounting through groove 31 on the cooling seat 32 .

[0052] In this embodiment, the horizontal depth of the cooling groove 32 on the cooling seat 3 refers to the distance between the bottom of the cooling groove 32 and the upper end surface of the cooling seat 3. Similarly, the horizontal depth of the first mounting groove 31 on the cooling seat 3 refers to the distance between the bottom of the first mounting groove 31 and the upper end surface of the cooling seat 3. In specific implementation, the height position of the first mounting groove 31 in the horizontal direction should be aligned with the axial position of the cooling groove 32, that is, the horizontal projection of the first mounting groove 31 should fall within the horizontal projection of the cooling groove 32, so that the first mounting groove 31 can be effectively covered by the cooling groove 32. At the same time, the cooling groove 32 can also be set at multiple locations around the outer side of the accommodating cavity 13 to effectively cool the heat at different positions in the first mounting groove 31 and improve the heat dissipation effect of the first mounting groove 31.

[0053] An embodiment of the present application further provides a laser, which includes a laser source and a collimator, wherein the collimator is used to collimate the laser beam emitted by the laser source, and the collimator is a collimator as described in any one of the above items.

[0054] This embodiment uses a laser of the collimator as described in any one of the above items, which can effectively dissipate the heat generated when the collimator is working and prevent dust from affecting the components in the collimator.

[0055] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A collimator, characterized in that: The collimator comprises: an aperture group, a pressure ring, a cooling seat and a connecting piece; The connecting piece is fixedly connected to the cooling seat; The cooling seat is provided with a first mounting groove, the aperture group and the pressure ring are sequentially arranged in the first mounting groove along the optical path direction, and the pressure ring fixes the aperture group; The aperture group includes a first aperture and a second aperture which are stacked, the first aperture abuts against the pressure ring, the cooling seat is provided with a cooling groove adjacent to the aperture group, and the cooling groove contains a cooling medium for cooling the aperture group.

2. The collimator according to claim 1, characterized in that The first aperture is provided with a first light-through hole, the second aperture is provided with a second light-through hole, and the first light-through hole and the second light-through hole are coaxially arranged with an interval.

3. The collimator according to claim 2, characterized in that: The first aperture includes a first flat plate portion and a supporting portion connected to each other, the supporting flat plate portion is in contact with the second aperture, the first light-through hole is arranged in the first flat plate portion, and the first light-through hole gradually narrows in the light path direction to form a first light-receiving surface.

4. The collimator according to claim 3, characterized in that: The second aperture includes a second flat plate portion and a tapered portion connected to each other, and the second flat plate portion abuts against the support portion; The second light-through hole is arranged in the tapered portion, and the outer peripheral surface of the tapered portion is arranged toward the first flat plate portion to form a second light-receiving surface.

5. The collimator according to claim 4, characterized in that: The second light-through hole gradually expands along the light path direction, and the minimum aperture of the first light-through hole is greater than the minimum aperture of the second light-through hole.

6. The collimator according to claim 4, characterized in that: The first flat plate portion and the second flat plate portion are parallel to each other, and a receiving cavity is formed among the first flat plate portion, the supporting portion, the second flat plate portion and the tapered portion.

7. The collimator according to claim 6, characterized in that: The pressure ring, the support portion, and the second flat plate portion all abut against the inner side wall of the first installation slot.

8. The collimator according to any one of claims 1 to 7, characterized in that: The collimator further comprises an input connector, the connecting member is provided with a second mounting through slot, and the input connector portion is disposed in the second mounting through slot and fixedly connected to the connecting member.

9. The collimator according to claim 1, characterized in that: The horizontal depth of the cooling groove on the cooling seat is greater than or equal to the horizontal depth of the first mounting through groove on the cooling seat.

10. A laser, characterized in that: The laser uses the collimator according to any one of claims 1 to 9.

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