Lens and imaging lens

Abstract

The utility model relates to the technical field of optical elements, in particular to a lens and an imaging lens. Wherein the lens comprises an imaging part and a mounting part, the imaging part is used for transmitting light, the mounting part is arranged on the outer side of the imaging part in a surrounding mode, a first through hole and a second through hole are formed in the mounting part in the optical axis direction of the lens, and the first through hole is closer to the imaging part than the second through hole. The first through hole and the second through hole can avoid the deformation of the imaging part of the lens, so that the extrusion stress of the lens cone or the space ring on the lens can be concentrated to the mounting part, the change of the surface type and the curvature radius caused by the extrusion deformation of the imaging part is avoided, and the optical imaging quality of the lens under the condition of high temperature or low temperature is effectively improved.

Description

Technical Field

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

[0002] Imaging lenses have the function of light transmission and are widely used in various imaging fields such as automotive, security, and intelligent manufacturing. As a precision optical component, imaging lenses have strict manufacturing and installation accuracy requirements, and their imaging performance is relatively sensitive to different temperatures. Lenses are usually installed in the lens barrel in a superimposed or interlocking manner. During assembly, they are circumferentially fixed by the inner wall of the lens barrel and axially fixed by the locking ring, front ring, spacer and lens barrel. However, under high or low temperature conditions, due to the different axial and radial expansion and contraction of the lenses, spacers and lens barrel, extrusion occurs between the components, causing deformation of the optical effective diameter and thus affecting the optical performance; that is, at high temperatures, the radial expansion of traditional lenses is greater than the radial expansion of the lens barrel, resulting in squeezing and deformation of the effective surface of the lens, which in turn leads to changes in the surface shape and the radius of curvature of the lens (the imaging part is squeezed and affects the imaging), which ultimately leads to a decrease in the resolution of the imaging lens and affects the imaging quality.

[0003] Therefore, it is necessary to provide a solution that does not affect the imaging part of the lens under high and low temperature conditions. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art. The present invention provides a lens, comprising: an imaging portion, the imaging portion being used for light to pass through and form an image;

[0005] The mounting portion is arranged around the outside of the imaging portion, and a first through hole and a second through hole are opened on the mounting portion along the optical axis direction of the lens, and the first through hole is closer to the imaging portion than the second through hole.

[0006] Further preferably, the first through hole and the second through hole each include a plurality, and the plurality of the first through holes and the plurality of the second through holes are uniformly distributed around the imaging portion.

[0007] Further preferably, the number of the first through holes and the number of the second through holes are both two, and both the first through holes and the second through holes are arc-shaped structures.

[0008] Further preferably, along the projection direction of the optical axis, the first through hole and the second through hole are surrounded by a circular ring shape.

[0009] Further preferably, along the diameter direction of the lens, there is an overlapping area between the first through hole and the second through hole.

[0010] Further preferably, a mounting boss is further provided on the mounting portion, and the mounting boss is staggered with the first through hole and the second through hole.

[0011] Further preferably, the mounting boss is located on a side of the first through hole away from the imaging portion.

[0012] Further preferably, a plurality of supporting members are provided on the outer side wall of the mounting portion, and the plurality of supporting members are evenly arranged around the optical axis.

[0013] Further preferably, along the diameter direction, the supporting member is located outside the first through hole, and / or the supporting member is located outside the second through hole.

[0014] Further preferably, the shapes of the first through hole and the second through hole are one or more of rhombus, crescent, triangle and arc.

[0015] On the other hand, the present application also provides an imaging lens, comprising a lens barrel, a spacer and the above-mentioned lens, wherein the lens and the spacer are located in the lens barrel, and the lens is arranged on the spacer. A dispensing device is also provided.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) By setting a first through hole and a second through hole that penetrate the mounting portion along the optical axis on the mounting portion of the lens, deformation of the imaging portion of the lens can be avoided, and the extrusion stress of the lens barrel or the spacer ring on the lens can be concentrated on the mounting portion, thereby avoiding changes in the surface shape and curvature radius caused by extrusion deformation of the imaging portion, and effectively improving the optical imaging quality of the lens under high or low temperature conditions; at the same time, it is ensured that the positions of the first through hole and the second through hole on the mounting portion are not on circles of the same diameter, so that the first through hole and the second through hole are staggered on the mounting portion, further decomposing the extrusion stress and preventing the extrusion stress on the mounting portion from being too concentrated. (2) The first through hole and the second through hole adopt an arc-shaped structure and are multiple in number, which is adapted to the shape of the lens and effectively decomposes the extrusion stress; and further, it is defined that the first through hole and the second through hole are enclosed in a circular ring shape, and there is an overlapping area between the first through hole and the second through hole in the diameter direction of the lens, thereby ensuring that a through hole is provided at each diameter position of the mounting portion of the lens, ensuring that a through hole is provided at each position of the imaging portion to perform extrusion stress, and ensuring that the imaging portion is not affected by the extrusion stress. (3) By arranging a plurality of supporting members on the outer side wall of the mounting portion, and the arrangement positions of the supporting members correspond to the first through hole and the second through hole, the extrusion force of the lens barrel on the mounting portion can be concentrated on the first through hole and the second through hole, effectively preventing the imaging portion from being subjected to extrusion stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional schematic diagram of a lens provided by the utility model;

[0018] Figure 2 for Figure 1 Top view of the middle lens along the optical axis;

[0019] Figure 3 A top view of a lens according to another embodiment of the present invention;

[0020] Figure 4 The present invention provides a structural diagram of a lens. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to 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 this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0024] See also Figures 1-4 As shown in the specific embodiment of the present application, a lens 100 is disclosed, comprising an imaging portion 10 and a mounting portion 20. The imaging portion 10 is used for light to pass through for imaging. The mounting portion 20 is arranged around the outside of the imaging portion 10. Along the optical axis A direction of the lens 100, the mounting portion 20 is provided with a first through hole 201 and a second through hole 202. The first through hole 201 is closer to the imaging portion 10 than the second through hole 202. For details, please refer to Figure 1 and Figure 4As shown, the optical axis A of the lens 100 refers to the axis passing through the center point of the lens 100. Light can pass through the imaging portion along the direction of the optical axis A to form an image. The first through hole 201 and the second through hole 202 penetrate the mounting portion 20 along the direction of the optical axis A, ensuring that there are through holes on the mounting portion 20 to achieve the decomposition of the extrusion stress. It should be noted that the lens 100 installed in the lens barrel 300 is squeezed and limited by the spacer 200, the lens barrel 300, or other lenses, and is therefore subject to extrusion stress in multiple directions, wherein the extrusion stress mainly comes from the radial extrusion stress provided by the lens barrel 300 and the axial extrusion stress provided by the spacer 200 and other lenses. By providing a first through hole 201 and a second through hole 202 that penetrates the mounting portion 20 along the optical axis A on the mounting portion 20 of the lens 100, deformation of the imaging portion 10 of the lens 100 can be avoided, and the extrusion stress of the lens barrel 300 or the spacer ring 200 on the lens 100 can be transferred and concentrated to the mounting portion 20, thereby avoiding changes in the surface shape and curvature radius caused by extrusion deformation of the imaging portion 10, and effectively improving the optical imaging quality of the lens 100 under high or low temperature conditions. Furthermore, the first through hole 201 and the second through hole 202 are located on circles of different diameters on the mounting portion 20, that is, the first through hole 201 and the second through hole 202 are at different distances from the optical axis A of the lens 100. By staggering the first through hole 201 and the second through hole 202 on the mounting portion 20, the extrusion stress is further decomposed, thereby avoiding excessive extrusion stress at the same circumference of the mounting portion 20, which would cause excessive deformation of the first through hole 201 and the second through hole 202, thereby affecting the position accuracy of the lens 100 inside the lens barrel 300, and ultimately affecting the imaging quality of the imaging lens.

[0025] For further information, please refer to Figure 2 As shown, the first through hole 201 and the second through hole 202 each include a plurality of them, and the plurality of first through holes 201 and the plurality of second through holes 202 are evenly distributed around the imaging portion 10. The plurality of first through holes 201 and the plurality of second through holes 202 are provided on the mounting portion 20 to ensure that the compressive stress can be decomposed to various positions of the mounting portion 20. The plurality of first through holes 201 and the plurality of second through holes 202 are evenly distributed on the mounting portion 20, thereby making the compressive stress uniform at various positions of the mounting portion 20, so that the lens 100 can effectively decompose the compressive stress.

[0026] Based on the above solution, the number of first through holes 201 and second through holes 202 are both two, and both first through holes 201 and second through holes 202 are arc-shaped. Considering that conventional lenses 100 are generally circular, the arc-shaped structures of first through holes 201 and second through holes 202 are adapted to the shape of the lens 100 and facilitate the reduction of compressive stress. In a preferred embodiment, the number of first through holes 201 and second through holes 202 are both two, and the first through holes 201 and second through holes 202 are evenly distributed on the mounting portion 20, ensuring that the mounting portion 20 of the lens 100 can effectively reduce compressive stress while facilitating the processing and molding of the lens 100.

[0027] Furthermore, along the projection direction of the optical axis A, the first through hole 201 and the second through hole 202 together form a circular ring. It is understood that the first through hole 201 and the second through hole 202 are spliced ​​together to form a circular ring on the mounting portion 20, so that the mounting portion 20 has through holes at all diameter positions. That is, the compressive stress can be decomposed at all positions of the mounting portion 20, thereby preventing the imaging portion 10 from being subjected to compressive stress at any position, ensuring high-quality imaging by the imaging portion 10.

[0028] In another embodiment of the lens 100, please refer to Figure 3 As shown, the first through hole 201 and the second through hole 202 are both semicircular structures. The two semicircular structures are enclosed in a circular ring shape, which can ensure that the extrusion stress can be decomposed at all positions of the mounting portion 20.

[0029] For further information, please refer to Figure 2 and Figure 3 As shown, along the diameter of the lens 100, the first through hole 201 and the second through hole 202 have an overlapping area. The provision of the overlapping area ensures that each position of the imaging portion 10 has a through hole to relieve extrusion stress. The first through hole 201 and the second through hole 202 in the overlapping area achieve a double layer of extrusion stress relief, thereby improving the extrusion stress relief effect of the mounting portion 20.

[0030] Furthermore, the mounting portion 20 is provided with a mounting boss 30, which is offset from the first through hole 201 and the second through hole 202. By providing the mounting boss 30 on the surface of the mounting portion 20 in the direction of the optical axis A, the remaining position of the mounting portion 20 is fully utilized, making it easier for the lens 100 and the spacer 200 to support each other. At the same time, the axial extrusion force on the lens 100 is concentrated on the mounting boss 30 and decomposed through the mounting boss 30, the first through hole 201 and the second through hole 202, thereby reducing the impact of the axial extrusion stress on the imaging portion 10. In a preferred embodiment, please refer to Figure 2As shown, the mounting boss 30 is located on the side of the first through hole 201 away from the imaging part 10, that is, the first through hole 201 is provided between the mounting boss 30 and the imaging part 10. The axial extrusion stress on the mounting boss 30 will be relieved through the first through hole 201, thereby reducing the influence of the axial extrusion stress on the imaging part 10.

[0031] Furthermore, a plurality of supporting members 40 are provided on the outer side wall of the mounting portion 20, and the plurality of supporting members 40 are evenly arranged around the optical axis A. It should be noted that the outer side wall of the mounting portion 20 is the outer side wall of the lens 100, and the plurality of supporting members 40 are provided on the outer side wall of the mounting portion 20 to facilitate the installation of the lens 100. The lens 100 is installed in the lens barrel 300 via the supporting members 40 and abuts against the inner wall of the lens barrel 300, thereby reducing the contact area between the outer side wall of the mounting portion 20 and the lens barrel 300, ensuring that the extrusion stress is concentrated on the supporting members 40, reducing the impact of the extrusion stress on the lens 100, and also improving the installation accuracy of the lens 100.

[0032] Furthermore, along the diameter direction of the lens 100, the supporting member 40 is located outside the first through hole 201, and / or the supporting member 40 is located outside the second through hole 202. By aligning the positions of the multiple supporting members 40 with the first through hole 201 and the second through hole 202, it is ensured that the compressive stress of the lens barrel 300 applied to the supporting member 40 can be accurately transferred to the first through hole 201 and the second through hole 202, thereby alleviating the compressive stress and preventing the compressive stress from affecting the imaging unit 10.

[0033] Furthermore, the first through hole 201 and the second through hole 202 are shaped in one or more of a rhombus, a crescent, a triangle, and an arc. It is understood that the first through hole 201 and the second through hole 202 are essentially used to relieve the compressive stress on the lens 100, and their shapes can be commonly used rhombus, crescent, triangle, or arc. Of course, other through hole shapes that can alleviate the compressive stress on the lens 100 are within the scope of protection of this application.

[0034] On the other hand, please refer to Figure 4 The second embodiment of the present application provides an imaging lens, including a lens barrel 300, a spacer ring 200 and the lens 100 in the above embodiment. The lens 100 and the spacer ring 200 are located in the lens barrel 300, and the lens 100 is arranged on the spacer ring 200.

[0035] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and improved ideas of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lens, characterized in that: include: An imaging unit, the imaging unit being used for light transmission and imaging; A mounting portion, the mounting portion being disposed around the outside of the imaging portion; Wherein, along the optical axis direction of the lens, a first through hole and a second through hole are opened on the mounting portion, and the first through hole is closer to the imaging portion than the second through hole.

2. The lens according to claim 1, wherein There are a plurality of the first through holes and a plurality of the second through holes, and the plurality of the first through holes and the plurality of the second through holes are evenly distributed around the imaging portion.

3. The lens according to claim 1, wherein: The number of the first through holes and the number of the second through holes are both two, and both the first through holes and the second through holes are arc-shaped structures.

4. The lens according to claim 3, wherein: Along the projection direction of the optical axis, the first through hole and the second through hole are surrounded by a circular ring.

5. The lens according to claim 4, characterized in that Along the diameter direction of the lens, there is an overlapping area between the first through hole and the second through hole.

6. The lens according to claim 1, wherein: The mounting portion is further provided with a mounting boss, which is staggered with the first through hole and the second through hole.

7. The lens according to claim 6, wherein: The mounting boss is located on a side of the first through hole away from the imaging portion.

8. The lens according to claim 1, wherein A plurality of supporting members are provided on the outer side wall of the mounting portion, and the plurality of supporting members are evenly arranged around the optical axis.

9. The lens according to claim 8, characterized in that Along the diameter direction of the lens, the supporting member is located outside the first through hole, and / or the supporting member is located outside the second through hole.

10. An imaging lens, characterized in that: The invention comprises a lens barrel, a spacer and the lens according to any one of claims 1 to 9, wherein the lens and the spacer are located in the lens barrel, and the lens is arranged on the spacer.

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