Optical lens and lens
By designing a circumferentially evenly distributed mounting structure on the optical lens, including abutment bosses and bearing bosses of the connecting and supporting parts, the problem of compression caused by the expansion and contraction of the lens and lens barrel under high and low temperatures is solved, ensuring the stable optical performance of the lens at different temperatures.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-22
- Publication Date
- 2026-03-13
AI Technical Summary
Under high or low temperature conditions, the difference in expansion and contraction between the optical lens and the lens barrel causes the components to be squeezed, affecting the effective optical surface shape and thus affecting the optical performance of the lens.
An optical lens is designed with a mounting structure evenly distributed in the circumference, including a connecting part and a supporting part. The supporting part is provided with an abutting boss and a bearing boss with an included angle greater than 30° and less than 150°. It is formed by an integral injection molding process to reduce stress transmission and to protect the lens by radial and axial stress relief.
It effectively reduces the stress on the lens under high and low temperature conditions, maintains the stability of the effective optical surface shape, and improves the imaging performance of the lens at different temperatures.
Smart Images
Figure CN121657232A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of camera technology, specifically to an optical lens and a lens. Background Technology
[0002] Lenses, with their light transmission capabilities, are widely used in various imaging fields such as automotive, security, and smart manufacturing. As a precision optical component, lenses require stringent manufacturing and installation accuracy, and their imaging performance is highly sensitive to different temperatures. Optical lenses are typically mounted in a lens barrel using a stacked or interlocking method to form a lens. During assembly, they are circumferentially fixed by the inner wall of the lens barrel and axially fixed by the front ring, spacers, and lens barrel. However, under high or low temperatures, the different axial and radial expansion and contraction of the optical lenses, spacers, and lens barrel cause compression between components, leading to deformation of the effective optical surface area of the optical lenses and thus affecting optical performance. Therefore, it is necessary to provide an optical lens and lens that can minimize the impact on the effective optical surface area under high and low temperature conditions to solve the above problems. Summary of the Invention
[0003] This invention discloses an optical lens and a lens, the purpose of which is to at least solve one of the technical problems existing in the prior art.
[0004] On one hand, the present invention provides an optical lens, including a lens body and two mounting structures disposed on the outer circumferential wall of the lens body. The two mounting structures are evenly distributed along the circumference of the lens body, and a mounting gap is formed between the two mounting structures. Each mounting structure includes a connecting portion and a supporting portion. The supporting portion extends along the circumferential direction of the lens body. One end of the connecting portion is fixed to the outer circumferential wall, and the other end of the connecting portion is connected to the supporting portion at the middle position in its circumferential extension direction. A supporting gap is formed between the supporting portion and the outer circumferential wall. Each end of the supporting portion away from the connecting portion in its circumferential extension direction is provided with an abutting boss and a bearing boss. The abutting boss is located on a first surface of the supporting portion away from the outer circumferential wall, and the bearing boss is located on a second surface of the supporting portion, wherein the angle between the second surface and the first surface is greater than 30° and less than 150°.
[0005] More preferably, the angle between the first surface and the second surface is 90°.
[0006] Further preferably, the support portion is also provided with a reverse bow-shaped structure, which is located between the connecting portion and the bearing boss. The reverse bow-shaped structure includes an inner boss and an inner groove. The inner boss is disposed on the surface of the support portion facing the outer circumferential wall, and the inner groove is disposed on the first surface and extends toward the inner boss.
[0007] More preferably, the number of the anti-bow-shaped structures is even, and the anti-bow-shaped structures are symmetrically distributed on both sides of the connecting part.
[0008] More preferably, the connecting portion extends radially along the lens body, and the length of the connecting portion in the radial direction is 1mm to 3mm.
[0009] More preferably, the length of the support portion in the radial direction is 1 mm to 3 mm.
[0010] Further preferably, the mounting structure is made of one or more of polymethyl methacrylate, polycarbonate, or cycloolefin polymer.
[0011] Further preferably, the lens body and the mounting structure are formed by an integral injection molding process.
[0012] On the other hand, the present invention also provides a lens, including a lens barrel, a spacer and the aforementioned optical lens, wherein the inner sidewall of the lens barrel forms a receiving groove, the spacer and the optical lens are both disposed in the receiving groove, the inner sidewall abuts against the abutting boss, and the spacer abuts against the bearing boss. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of an optical lens provided in an embodiment of this application;
[0014] Figure 2 for Figure 1 A sectional view along line AA.
[0015] Figure 3 Stress test diagram of an optical lens provided in an embodiment of this application;
[0016] Figure 4 A cross-sectional view of a lens provided in an embodiment of this application. Detailed Implementation
[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0018] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be 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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0020] The optical lenses and lenses provided in the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
[0021] like Figure 1 and Figure 2 As shown, the present invention provides an optical lens 100, including a lens body 1 and two mounting structures 2 disposed on the outer circumferential wall 11 of the lens body 1. The two mounting structures 2 are evenly distributed along the circumference of the lens body 1, and a mounting gap 3 is formed between the two mounting structures 2, meaning that the two mounting structures 2 will not interfere with each other when deformation occurs. The two mounting structures 2 are spaced apart and evenly distributed on the outer circumferential wall 11 of the lens body 1, that is, the two mounting structures 2 are arranged around the lens body 1 at intervals, for mounting and fixing the lens body 1. By setting two mounting structures 2, the stress diffusion points of the lens body 1 can be reduced, while ensuring the installation stability of the lens body 1. It should be noted that the lens body 1 is a circular structure, which is formed by rotating around the central axis o, where the circumferential direction is the direction of rotation around the central axis o of the lens body 1, and the central axis o is the optical axis of the lens body 1. The surface of the lens body 1 has an optically effective surface, through which light rays are deflected and imaged.
[0022] Furthermore, the mounting structure 2 includes a connecting part 21 and a supporting part 22. The supporting part 22 extends circumferentially along the lens body 1, i.e., the supporting part 22 is an open annular structure. One end of the connecting part 21 is fixed to the outer circumferential wall 11, and the other end of the connecting part 21 is connected to the supporting part 22 at its midpoint in the circumferential extension direction. A supporting gap 4 is formed between the supporting part 22 and the outer circumferential wall 11. The supporting part 22 is connected to the lens body 1 through the connecting part 21. The two supporting parts 22 have an installation gap 3 along the circumferential direction of the lens body 1 to ensure that the deformation of the two supporting parts 22 does not cause interference. It should be noted that the midpoint in the circumferential extension direction of the supporting part 22 refers to the middle position of the supporting part 22 in the circumferential direction of the lens body 1. By connecting the connecting part 21 to the midpoint in the circumferential extension direction of the supporting part 22, tilting of the supporting part 22 towards the lens body 1 can be prevented, thus ensuring that the supporting force on the lens body 1 is uniform. Meanwhile, the support portion 22 is connected to the lens body 1 only through the connecting portion 21, reducing the stress acting on the lens body 1 through the connecting portion 21 and preventing the surface shape of the optically effective surface on the lens body 1 from being squeezed and deformed. Preferably, the two support portions 22 together form an open ring structure and are disposed on the outside of the lens body 1 to protect the lens body 1 from all sides. It should be noted that the multiple mounting structures 2 are all the same in shape and size.
[0023] Furthermore, the support portion 22 is provided with abutment bosses 221 and bearing bosses 222 at both ends of its circumferential extension direction away from the connecting portion 21. The abutment bosses 221 are located on the first surface 223 of the support portion 22 away from the outer circumferential wall 11, and the bearing bosses 222 are located on the second surface 224 of the support portion 22. The angle between the second surface 224 and the first surface 223 is greater than 30° and less than 150°, ensuring that the abutment bosses 221 and the bearing bosses 222 can abut and support the optical lens 100 in different directions. It should be noted that the support portion 22 extends circumferentially along the lens body 1 and is symmetrically arranged with the connecting portion 21 as a reference. The abutment bosses 221 are provided at both ends of the support portion 22 away from the connecting portion 21, and the bearing bosses 222 are provided at both ends of the support portion 22 away from the connecting portion 21.
[0024] It is understood that there are two second surfaces 224 that form an angle with the first surface 223. The supporting boss 222 can be disposed on both second surfaces 224 or on one of the second surfaces 224. It should be noted that the angle between the first surface 223 and the second surface 224 is limited to greater than 30° and less than 150°. This is to ensure that the abutting boss 221 and the supporting boss 222 can be easily machined onto the first surface 223 and the second surface 224, and to ensure that the abutting boss 221 and the supporting boss 222 can provide axial and radial positioning for the optical lens 100. It should be noted that radial direction refers to the diameter direction of the lens body 1, that is, the direction perpendicular to the central axis o; axial direction refers to the direction parallel to the central axis o.
[0025] The abutment boss 221 protrudes from the first surface 223, and the bearing boss 222 protrudes from the second surface 224. The abutment boss 221 and the bearing boss 222 are used for axial and radial mounting and fixing of the support part 22, respectively. By setting the abutment boss 221 at both ends of the support part 22, the radial compressive force on the support part 22 is concentrated at both ends of the support part 22, reducing the stress transmitted from the radial compressive force to the connecting part 21 and thus affecting the lens body 1. In other words, the lens body 1 is protected by radial stress relief. By setting the bearing boss 222 at both ends of the support part 22, the axial compressive force on the support part 22 along the central axis o of the lens body 1 is concentrated at both ends of the support part 22, reducing the stress transmitted from the axial compressive force to the connecting part 21 and thus affecting the lens body 1. In other words, the lens body 1 is protected by axial stress relief.
[0026] To facilitate understanding of the proposed solution, Figure 3 The stress test diagram of the optical lens 100 of this application is given, in which red indicates the maximum stress on the lens body 1, and light blue indicates the minimum stress on the lens body 1. Figure 3 It can be seen that the stress on the lens body 1 can be significantly reduced by the mounting structure 2, and the stress is concentrated at the connection 21 between the lens body 1 and the mounting structure 2, so the range of influence on the lens body 1 is small.
[0027] Further preferably, the angle between the first surface 223 and the second surface 224 is 90°, the first surface 223 is parallel to the central axis o of the lens body 1, and the second surface 224 is perpendicular to the central axis o of the lens body 1, ensuring that the structure of the support part 22 is neat and meets the requirements of miniaturization design, while facilitating the design and molding of the support boss 222.
[0028] Further preferably, the support portion 22 is also provided with a reverse bow-shaped structure 225. The reverse bow-shaped structure 225 is located between the connecting portion 21 and the bearing boss 222. The reverse bow-shaped structure 225 includes an inner boss 2251 and an inner groove 2252. The inner boss 2251 is provided on the surface of the support portion 22 facing the outer circumferential wall 11, and the inner groove 2252 is provided on the first surface 223 and extends toward the inner boss 2251. It can be understood that the reverse bow-shaped structure 225 is a part of the structure on the support portion 22 that is radially recessed toward the outer circumferential wall 11. By providing the reverse bow-shaped structure 225, the stress generated by the support portion 22 at the point of contact with the boss 221 is reduced and transmitted to the connecting portion 21, thereby reducing the stress on the lens body 1 and improving the temperature drift compensation effect.
[0029] Further preferably, the number of anti-bow-shaped structures 225 is even, and the anti-bow-shaped structures 225 are symmetrically distributed on both sides of the connecting part 21 to ensure that the connecting part 21 and the lens body 1 are subjected to uniform force.
[0030] Further preferably, the connecting portion 21 extends radially along the lens body 1, and the radial length of the connecting portion 21 is 1mm to 3mm, which helps to alleviate the influence of the axial compressive force on the lens body 1 and reduce the stress on the lens body 1.
[0031] Further preferably, the length of the support portion 22 in the radial direction is 1mm to 3mm, which ensures that the support portion 22 is easy to deform in the radial and axial directions, thereby reducing the stress on the lens body 1.
[0032] Further preferably, the material of the mounting structure 2 is one or more of polymethyl methacrylate, polycarbonate, or cycloolefin polymer, to ensure that the mounting structure 2 is easy to mold.
[0033] Further optimization involves molding the lens body 1 and the mounting structure 2 using an integrated injection molding process, which reduces the processing difficulty of the optical lens 100.
[0034] On the other hand, such as Figure 4 As shown, the present invention also provides a lens, including a lens barrel 200, a spacer 300, and the aforementioned optical lens 100. The inner wall 201 of the lens barrel 200 forms a receiving groove 202. The spacer 300 and the optical lens 100 are both disposed within the receiving groove 202. The inner wall 201 abuts against the abutting boss 221, and the spacer 300 abuts against the supporting boss 222. In other words, the optical lens 100 is fixed to the lens barrel 200 via the abutting boss 221, and the optical lens 100 is fixed to the spacer 300 via the supporting boss 222, ensuring that the compressive force on the optical lens 100 is concentrated on both sides of the support portion 22, thereby protecting the lens body 1 of the optical lens 100.
[0035] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.
Claims
1. An optical lens, characterized in that, include: The lens body and two mounting structures disposed on the outer circumferential wall of the lens body, the two mounting structures being evenly distributed along the circumference of the lens body, and a mounting gap being formed between the two mounting structures; The mounting structure includes a connecting part and a supporting part. The supporting part extends circumferentially along the lens body. One end of the connecting part is fixed to the outer circumferential wall, and the other end of the connecting part is connected to the middle position of the supporting part in its circumferential extension direction. A supporting gap is formed between the supporting part and the outer circumferential wall. The support portion is provided with an abutting boss and a bearing boss at both ends away from the connecting portion in its circumferential extension direction. The abutting boss is located on a first surface of the support portion away from the outer circumferential wall, and the bearing boss is located on a second surface of the support portion, wherein the angle between the second surface and the first surface is greater than 30° and less than 150°.
2. The optical lens according to claim 1, characterized in that, The angle between the first surface and the second surface is 90°.
3. The optical lens according to claim 1, characterized in that, The support portion is also provided with a reverse bow-shaped structure, which is located between the connecting portion and the bearing boss. The reverse bow-shaped structure includes an inner boss and an inner groove. The inner boss is disposed on the surface of the support portion facing the outer circumferential wall, and the inner groove is disposed on the first surface and extends toward the inner boss.
4. The optical lens according to claim 3, characterized in that, The number of the reverse bow-shaped structures is even, and the reverse bow-shaped structures are symmetrically distributed on both sides of the connecting part.
5. The optical lens according to claim 1, characterized in that, The connecting portion extends radially along the lens body, and the length of the connecting portion in the radial direction is 1mm to 3mm.
6. The optical lens according to claim 5, characterized in that, The length of the support portion in the radial direction is 1mm to 3mm.
7. The optical lens according to claim 1, characterized in that, The mounting structure is made of one or more of the following materials: polymethyl methacrylate, polycarbonate, or cyclic olefin polymer.
8. The optical lens according to claim 7, characterized in that, The lens body and the mounting structure are formed by an integral injection molding process.
9. A lens, characterized in that, The lens includes a lens barrel, a spacer, and an optical lens as described in any one of claims 1-8. The inner sidewall of the lens barrel forms a receiving groove, and the spacer and the optical lens are both disposed in the receiving groove. The inner sidewall abuts against the abutting boss, and the spacer abuts against the supporting boss.