Optical lens barrel and optical lens

Abstract

The utility model belongs to the technical field of optical lenses, and discloses an optical lens barrel and an optical lens. The optical lens cone comprises a lens cone body and a flow channel, the lens cone body is provided with a mounting cavity, and the plurality of lenses can be arranged in the mounting cavity at intervals along the length direction of the mounting cavity; the flow channel is arranged in the cavity wall of the lens barrel body, is used for guiding fluid and can be in contact with the fluid, and the flow channel can cover the lens barrel body in the length direction of the lens barrel body. For an environment with a relatively high temperature, the cooling effect is relatively good by arranging the flow channel and enabling the fluid to be in contact with the flow channel to cool the lens barrel body. The flow channel covers the lens barrel body in the cavity wall of the lens barrel body along the length direction of the lens barrel body, so that the lens barrel body can be cooled in the length direction of the lens barrel body, the internal temperature of the lens barrel body is consistent, and the displacement of the lens is effectively prevented. Therefore, the temperature of the lens and the lens cone can be effectively reduced, the cooling efficiency of the optical lens is high, and the cooling effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lenses, in particular to an optical lens barrel and an optical lens. Background Art

[0002] An optical lens consists of a barrel and lens. The barrel is an indispensable optical component. Light passes through the lens installed in the barrel and acts on the working surface, achieving the effect designed by the optical path designer. However, during operation, the optical lens may experience a temperature increase. For example, when an optical lens is installed in a laser 3D printing device, the lens absorbs the heat generated by the laser, causing the temperature to rise. This increase in lens temperature can cause thermal focus shift. Since the lens is installed in the barrel, the barrel absorbs the heat conducted by the lens, causing deformation and displacement of the lens assembly position, which in turn affects the optical effect of the optical lens.

[0003] To address this issue, existing technologies have employed methods such as placing an external fan to dissipate heat from the optical lens, or installing a heat transfer mechanism and a cooling mechanism outside the lens barrel to cool the optical lens. The heat transfer mechanism absorbs heat from the lens barrel, and the cooling mechanism cools the heat transfer mechanism to dissipate heat from the optical lens. However, these methods are unable to effectively reduce the temperature of the lens and the lens barrel, resulting in low cooling efficiency and poor cooling effect. Utility Model Content

[0004] The purpose of the utility model is to provide an optical lens barrel and an optical lens, which can effectively reduce the temperature of the lens and the lens barrel, have high cooling efficiency for the optical lens, and have a good cooling effect.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] In one aspect, an optical lens barrel is provided, comprising:

[0007] A lens barrel body, wherein the lens barrel body is provided with a mounting cavity, and a plurality of lenses can be arranged in the mounting cavity at intervals along the length direction of the mounting cavity;

[0008] The flow channel is arranged in the cavity wall of the lens barrel body, is used for guiding the fluid and can be in contact with the fluid, and the flow channel can cover the lens barrel body along the length direction of the lens barrel body.

[0009] In some possible implementations, a plurality of flow channels are provided, and the plurality of flow channels are spaced apart along the wall thickness direction of the lens barrel body.

[0010] In some possible implementations, among the plurality of flow channels spaced apart along the wall thickness direction of the lens barrel body, two adjacent flow channels are connected.

[0011] In some possible embodiments, the outer wall of the lens barrel body is provided with a fluid inlet and a fluid outlet, the fluid inlet is used to allow the fluid to enter, and the fluid outlet is used to allow the fluid to flow out; among the multiple flow channels, the opening of the flow channel close to the inner wall of the mounting cavity is the fluid inlet, and the opening of the flow channel close to the outer wall of the lens barrel body is the fluid outlet.

[0012] In some possible embodiments, among the multiple flow channels spaced apart along the wall thickness direction of the lens barrel body, the minimum wall thickness between the flow channel close to the inner wall surface of the mounting cavity and the inner wall surface of the mounting cavity is 0.1 mm, and the minimum wall thickness between the flow channel close to the outer wall surface of the lens barrel body and the outer wall surface of the lens barrel body is 0.1 mm.

[0013] In some possible implementations, the optical lens barrel is an integrated molded structure.

[0014] In some possible implementations, the flow channel is a spiral structure, and the spiral structure is extended along the length direction of the lens barrel body within the cavity wall of the lens barrel body.

[0015] In some possible implementations, the flow channel is a heat exchange fluid flow channel, which is used to provide a flow channel for the heat exchange fluid.

[0016] In some possible implementations, the lens barrel body is a rotating body structure, and the flow channel covers the lens barrel body along the axial direction of the lens barrel body.

[0017] On the other hand, an optical lens comprises a plurality of lenses and an optical lens barrel as described in any of the above solutions, wherein the plurality of lenses are arranged in the mounting cavity at intervals along the length direction of the mounting cavity.

[0018] Beneficial effects of the utility model:

[0019] The optical lens barrel provided by the utility model includes a lens barrel body and a flow channel. For use in high-temperature environments, the flow channel is disposed within the cavity wall of the lens barrel body. Fluid directly contacts the flow channel, thereby reducing the temperature of the lens barrel body, effectively cooling the lens barrel body. Furthermore, the flow channel covers the lens barrel body along its length within the cavity wall, cooling the lens barrel body along its length, maintaining a relatively consistent internal temperature and effectively preventing lens displacement. Therefore, the utility model can effectively reduce the temperature of the lens and the lens barrel, achieving high cooling efficiency and a good cooling effect for the optical lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional view of the optical lens barrel provided by the utility model;

[0021] Figure 2 It is a structural schematic diagram of the optical lens barrel provided by the utility model;

[0022] Figure 3 It is a structural schematic diagram of two flow channels, a fluid inlet and a fluid outlet involved in the utility model.

[0023] In the picture:

[0024] 1. Lens barrel body; 11. Mounting cavity; 12. Fluid inlet; 13. Fluid outlet;

[0025] 2. Runner. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0027] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0030] like Figures 1 to 3 As shown, the utility model provides an optical lens barrel that can be used in high-temperature environments such as laser 3D printing, and can also be used in low-temperature environments such as polar regions, high mountains and outer space. It has a simple structure and good stability, low processing difficulty and low cost. The optical lens barrel includes a lens barrel body 1 and a flow channel 2. The lens barrel body 1 is provided with a mounting cavity 11, and a plurality of lenses can be arranged in the mounting cavity 11 at intervals along the length direction of the mounting cavity 11; the flow channel 2 is arranged in the cavity wall of the lens barrel body 1, and is used to guide the fluid and can be in contact with the fluid. Optionally, the flow channel 2 is a heat exchange liquid flow channel for providing a flow channel for the heat exchange liquid. In addition, the flow channel 2 can also be a gas flow channel, and the optical lens barrel and the lenses are heat-exchanged by gas. In addition, the flow channel 2 covers the lens barrel body 1 along the length direction of the lens barrel body 1.

[0031] The optical lens barrel of this embodiment is used in high-temperature environments such as laser 3D printing. Specifically, the heat exchange fluid is cold water, which is used to cool the optical lens barrel and lenses. By providing a flow channel 2 within the cavity wall of the lens barrel body 1, the cold water directly contacts the flow channel 2, thereby reducing the temperature of the lens barrel body 1, thereby achieving a better cooling effect on the lens barrel body 1. In addition, the flow channel 2 covers the lens barrel body 1 along the length of the lens barrel body 1, which can cool the lens barrel body 1 along the length of the lens barrel body 1, making the internal temperature of the lens barrel body 1 more consistent and effectively preventing the lens from shifting. Therefore, the utility model can effectively reduce the temperature of the lenses and the lens barrel, and has a high cooling efficiency and a good cooling effect on the optical lens.

[0032] In this embodiment, the flow channel 2 partially covers the lens barrel body 1 along the length direction of the lens barrel body 1, and can cover the installation position of the lens in the lens barrel body 1. In other embodiments, the flow channel 2 completely covers the lens barrel body 1 along the length direction of the lens barrel body 1, which has a better cooling effect.

[0033] In addition, the optical lens barrel can also be used in low-temperature environments such as polar regions, high mountains and outer space. The heat exchange fluid is hot water, which is used to heat the optical lens barrel and lenses to ensure the operating temperature required for the lenses to work.

[0034] Optionally, a plurality of flow channels 2 are provided, and the plurality of flow channels 2 are spaced apart along the wall thickness direction of the lens barrel body 1. This arrangement can fully cool the lens barrel body 1 in the wall thickness direction of the lens barrel body 1, reduce thermal stress caused by temperature gradients, and more effectively prevent lens displacement. In addition, providing multiple flow channels 2 can also improve cooling efficiency, resulting in a better cooling effect on the lens.

[0035] Optionally, among the multiple flow channels 2 spaced apart along the wall thickness direction of the lens barrel body 1, two adjacent flow channels 2 are connected. This arrangement reduces the number of fluid inlets and outlets required for fluid transport. In other embodiments, adjacent flow channels 2 may not be connected, with each flow channel 2 having a separate fluid inlet and outlet. This arrangement allows different types of fluid to flow into the multiple flow channels 2 to accommodate the varying heat exchange requirements of different locations.

[0036] Optionally, the flow channel 2 is a spiral structure, and the spiral structure is extended in the cavity wall of the lens barrel body 1 along the length direction of the lens barrel body 1. In this embodiment, a plurality of spiral structures are arranged at intervals along the wall thickness direction of the lens barrel body 1, and two adjacent spiral structures are connected. By setting the flow channel 2 as a spiral structure and the two adjacent spiral structures being connected, it is only necessary to set a fluid inlet and a fluid outlet on the lens barrel body 1, that is, through one flow channel, sufficient cooling of the lens barrel body 1 can be achieved simultaneously along the wall thickness direction and the length direction of the lens barrel body 1. Optionally, in this embodiment, if Figure 1 and Figure 3 As shown, two flow channels 2 are provided, both of which are spiral structures, and are respectively a first flow channel and a second flow channel. The first flow channel is arranged near the inner wall surface of the mounting cavity 11, and the second flow channel is arranged near the outer wall surface of the lens barrel body 1. The first flow channel and the second flow channel are connected. The above arrangement ensures cooling efficiency and cooling effect while having a simple structure and convenient processing. Specifically, the pitch of the spiral structure of the first flow channel and the second flow channel is 4 mm, the cross-section is circular, and the cross-sectional diameter is 2 mm. While improving the cooling efficiency, it can ensure the structural strength of the lens barrel body 1. In addition, the spiral structure can be an arc-shaped annular spiral structure, or a bent annular spiral structure.

[0037] Optionally, in other embodiments, a plurality of flow channels 2 are provided, and the flow channels 2 are annular, zigzag, or other short flow channel structures. The plurality of flow channels 2 are divided into a plurality of groups, and the plurality of groups of flow channels 2 are spaced apart on the lens barrel body 1 along the length direction of the lens barrel body 1. In each group of flow channels 2, the plurality of flow channels 2 are spaced apart within the cavity wall of the lens barrel body 1 along the wall thickness direction of the lens barrel body 1. Furthermore, two adjacent flow channels 2 are connected. Each group of flow channels 2 can achieve sufficient cooling of the lens barrel body 1 in the wall thickness direction of the lens barrel body 1. The combination of the plurality of groups of flow channels 2 can achieve sufficient cooling of the lens barrel body 1 in the length direction of the lens barrel body 1. With respect to this embodiment, each group of flow channels 2 needs to be provided with a fluid inlet and a fluid outlet on the lens barrel body 1. Alternatively, there are multiple flow channels 2, and the flow channels 2 are annular structures, zigzag structures or other forms of short flow channel structures. The multiple flow channels 2 are arranged at intervals on the barrel body 1 along the length direction of the barrel body 1. As long as the flow channels 2 can cover the barrel body 1 along the length direction of the barrel body 1, the number, shape and number of fluid inlets and outlets of the flow channels 2 are not limited.

[0038] Furthermore, in this embodiment, the spiral structure is provided with an inlet and an outlet, and in two adjacent spiral structures, the outlet of one spiral structure and the inlet of the other spiral structure are located on the same side of the lens barrel body 1. The outlet of one spiral structure and the inlet of the other spiral structure are located on the same side of the lens barrel body 1, which saves an intermediate flow channel and improves cooling efficiency. In other embodiments, the optical lens barrel further includes an intermediate flow channel, and in two adjacent spiral structures, the inlets of both spiral structures are located on the same side of the lens barrel body 1. The intermediate flow channel penetrates the lens barrel body 1 along the length direction of the lens barrel body 1 and connects the outlet of one spiral structure with the inlet of the other spiral structure.

[0039] Furthermore, in this embodiment, the two adjacent spiral structures have opposite directions of rotation. Figure 3 In the illustrated flow channel 2, the inner flow channel is clockwise and the outer flow channel is counterclockwise. This arrangement ensures a smooth transition between the two flow channels 2 at the lower inlet and outlet junction, reducing fluid flow losses at the inlet and outlet junction. In other embodiments, the helical directions of two adjacent spiral structures are the same, as long as fluid can flow from one spiral structure to the other.

[0040] Optionally, the outer wall of the lens barrel body 1 is provided with a fluid inlet 12 and a fluid outlet 13, the fluid inlet 12 is used to introduce fluid, and the fluid outlet 13 is used for fluid outflow; among the multiple flow channels 2, the opening of the flow channel 2 close to the inner wall of the mounting cavity 11 is the fluid inlet 12, and the opening of the flow channel 2 close to the outer wall of the lens barrel body 1 is the fluid outlet 13. In this embodiment, since the part of the lens barrel body 1 close to the mounting cavity 11 is closer to the lens and has a higher temperature, and the part of the lens barrel body 1 away from the mounting cavity 11 is farther from the lens and has a lower temperature, with such an arrangement, cold water flows from the inside to the outside along the wall thickness direction of the lens barrel body 1, so that the cold water entering from the fluid inlet 12 first cools the part of the lens barrel body 1 close to the mounting cavity 11, and then cools the part of the lens barrel body 1 away from the mounting cavity 11, further ensuring the consistency of the temperature inside the lens barrel body 1. Figure 3 In this embodiment, the two spiral structures have opposite rotation directions. After cold water enters fluid inlet 12, it flows clockwise downward through the inner flow channel, then flows clockwise upward through the outer flow channel, and flows out of fluid outlet 13. If the two spiral structures have the same rotation directions, the cold water flows clockwise downward through the inner flow channel, then flows counterclockwise upward through the outer flow channel. In this embodiment, the lens barrel body 1 is provided with water pipe interfaces at both the fluid inlet 12 and the fluid outlet 13 to facilitate installation and connection of external water pipes.

[0041] Alternatively, as Figure 1 As shown, among the multiple flow channels 2 spaced apart along the wall thickness direction of the lens barrel body 1, the minimum wall thickness between the flow channel 2 close to the inner wall of the mounting cavity 11 and the inner wall of the mounting cavity 11 is 0.1 mm, and the minimum wall thickness between the flow channel 2 close to the outer wall of the lens barrel body 1 and the outer wall of the lens barrel body 1 is 0.1 mm. This arrangement ensures the structural strength of the lens barrel body 1.

[0042] Optionally, the optical lens barrel is an integrated structure, i.e., the lens barrel body 1 and the flow channel 2 are integrally arranged. Specifically, the optical lens barrel is formed using 3D printing. Compared to existing technologies, using 3D printing to process the optical lens barrel optimizes the flow channel design while achieving integrated molding. This results in a compact structure and reduced structural complexity, avoids assembly and wear issues caused by part matching, as well as fastener aging, thereby improving the reliability and stability of the optical lens barrel. Furthermore, using 3D printing to integrally mold the optical lens barrel can reduce machining costs and improve production efficiency. Specifically, the optical lens barrel is made of AlSi10Mg material, which has excellent 3D printing and heat dissipation properties. Furthermore, during printing, a selective laser melting (SLM) printer is used to perform laser 3D printing on the optical lens barrel. In other embodiments, the optical lens barrel further includes a flow channel body, which is a hollow structure. The inner cavity of the flow channel body forms the flow channel 2. A vacuum gap exists between the flow channel body and the lens barrel body 1, providing thermal insulation for the lens barrel body 1.

[0043] Furthermore, the outer wall of the lens barrel body 1 is provided with external threads, which connect the lens barrel body 1 to an external device via the external threads, providing a more reliable connection. The external threads are produced by machining based on 3D printing. In this embodiment, the external device is a laser 3D printing device, and the optical lens barrel is used for laser 3D printing.

[0044] Optionally, in this embodiment, the lens barrel body 1 is a rotating body structure, and the flow channel 2 covers the lens barrel body 1 along the axial direction of the lens barrel body 1. Such a configuration has a simple structure, is convenient for connection with external equipment, and is also easier to process the lens barrel body 1.

[0045] In addition, the lens barrel body 1 may optionally be provided with a protective gas flow channel, which serves as a flow channel for the protective gas and allows the protective gas to fall onto the lens surface. By providing the protective gas flow channel, the protective gas can fall onto the lens surface, forming an air curtain to prevent the lens surface from being contaminated and thus protect the lens. Specifically, the protective gas flow channel is provided with an inlet and a plurality of outlets spaced apart, each of which is connected to the inlet. The protective gas falls onto the lens surface through the plurality of outlets. This arrangement increases the coverage area of ​​the protective gas on the lens, thereby achieving a better protective effect. In this embodiment, the protective gas is an inert gas. If a plurality of flow channels 2 are provided and the cooling of the lens barrel body 1 is not affected, it is not necessary to provide a separate protective gas flow channel. Instead, the protective gas can be introduced into some of the flow channels 2, and vents can be provided on the inner walls of the flow channels 2. The vents are connected to the flow channels 2 and can guide the protective gas to the lens surface.

[0046] The present invention also provides an optical lens system comprising a plurality of lenses and an optical lens barrel. The plurality of lenses are spaced apart along the length of a mounting cavity 11. Specifically, the mounting cavity 11 comprises a plurality of cavities connected in a stepped manner, each cavity being adapted to accommodate at least one lens. This optical lens system effectively reduces the temperature of the lenses and the lens barrel, achieving high cooling efficiency and a good cooling effect.

[0047] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An optical lens barrel, characterized in that: include: A lens barrel body (1), wherein the lens barrel body (1) is provided with a mounting cavity (11), and a plurality of lenses can be arranged in the mounting cavity (11) at intervals along the length direction of the mounting cavity (11); A flow channel (2) is arranged in the cavity wall of the lens barrel body (1), is used for guiding the fluid and can be in contact with the fluid, and the flow channel (2) can cover the lens barrel body (1) along the length direction of the lens barrel body (1).

2. The optical lens barrel according to claim 1, wherein: A plurality of flow channels (2) are provided, and the plurality of flow channels (2) are arranged at intervals along the wall thickness direction of the lens barrel body (1).

3. The optical lens barrel according to claim 2, wherein: Among the plurality of flow channels (2) spaced apart along the wall thickness direction of the lens barrel body (1), two adjacent flow channels (2) are connected.

4. The optical lens barrel according to claim 3, wherein: The outer wall surface of the lens barrel body (1) is provided with a fluid inlet (12) and a fluid outlet (13), wherein the fluid inlet (12) is used for introducing the fluid, and the fluid outlet (13) is used for allowing the fluid to flow out; among the plurality of flow channels (2), the opening of the flow channel (2) close to the inner wall surface of the mounting cavity (11) is the fluid inlet (12), and the opening of the flow channel (2) close to the outer wall surface of the lens barrel body (1) is the fluid outlet (13).

5. The optical lens barrel according to claim 2, wherein: Among the plurality of flow channels (2) spaced apart along the wall thickness direction of the lens barrel body (1), the minimum wall thickness between the flow channel (2) close to the inner wall surface of the mounting cavity (11) and the inner wall surface of the mounting cavity (11) is 0.1 mm, and the minimum wall thickness between the flow channel (2) close to the outer wall surface of the lens barrel body (1) and the outer wall surface of the lens barrel body (1) is 0.1 mm.

6. The optical lens barrel according to any one of claims 1 to 5, characterized in that: The optical lens barrel is an integrated molding structure.

7. The optical lens barrel according to any one of claims 1 to 5, characterized in that: The flow channel (2) is a spiral structure, and the spiral structure is extended in the cavity wall of the lens barrel body (1) along the length direction of the lens barrel body (1).

8. The optical lens barrel according to any one of claims 1 to 5, characterized in that: The flow channel (2) is a heat exchange liquid flow channel, which is used to provide a flow channel for the heat exchange liquid.

9. The optical lens barrel according to any one of claims 1 to 5, characterized in that: The lens barrel body (1) is a rotating body structure, and the flow channel (2) covers the lens barrel body (1) along the axial direction of the lens barrel body (1).

10. An optical lens, characterized in that: The optical lens barrel comprises a plurality of lenses and any one of claims 1 to 9, wherein the plurality of lenses are arranged in the mounting cavity (11) at intervals along the length direction of the mounting cavity (11).

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