High-precision high-flatness security lens base

Abstract

The utility model relates to technical field especially relates to a kind of high-precision high flatness security lens base, multiple independent distribution's leveling boss is set in lens base bottom, install reference plane is divided into several individually adjustable areas, so that corresponding mold bottom surface is naturally divided into multiple independent repair mold surface, effectively solve the problem that traditional integral base repair mold is difficult;The mold area corresponding to each leveling boss can be independently precision finished, can be targeted to correct local unevenness, avoid the mutual interference problem caused by overall adjustment in traditional repair mold mode;This modular leveling structure not only simplifies repair mold process, makes mold maintenance more accurate and efficient, but also can adaptively compensate microscopic deviation of installation surface during assembly, ensure the stability of lens installation, significantly reduce mold processing and maintenance cost, have better practicality and economy.

Description

Technical Field

[0001] This utility model relates to the field of lens technology, and in particular to a high-precision, high-flatness security lens base. Background Technology

[0002] Existing security camera mounts typically feature a one-piece base design, requiring the overall flatness to meet the lens installation accuracy requirements during manufacturing. However, due to the large size or complex structure of the mounts, uneven shrinkage or mold wear after injection molding can easily lead to base deformation. Subsequent mold repair requires precise adjustments to the entire base, which is difficult and costly, making it difficult to consistently guarantee the flatness of the base.

[0003] Furthermore, deviations in the flatness of the lens mount's bottom surface directly affect the lens's mounting accuracy, thereby reducing image quality. Traditional methods rely on improving mold processing precision or repeated mold repairs, but these are inefficient and uneconomical. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a high-precision, high-flatness security lens base.

[0005] The present invention adopts the following technical solution:

[0006] A high-precision, high-flatness security lens base is provided for mounting a lens. The lens base includes a base body, a lens mounting portion located on the top of the base body, and a leveling portion located at the bottom of the base body. The lens mounting portion is used for mounting the lens. The leveling portion includes a connecting base integrally formed on the bottom of the base body and a plurality of leveling bosses protruding from the bottom of the connecting base. The leveling bosses are spaced apart, and the bottoms of all the leveling bosses together form the mounting reference plane of the lens base. A clearance gap is formed between adjacent leveling bosses.

[0007] Preferably, there are two leveling bosses, which are symmetrically distributed at the bottom of the connecting base.

[0008] Preferably, the connecting base is arranged in a ring shape, and a downward-opening mounting groove is formed on the inner side of the connecting base. The top of the inner side of the mounting groove is provided with a through hole that communicates with the lens mounting part.

[0009] Preferably, the top inner side of the mounting groove is provided with a plurality of positioning blocks arranged around the perforation, the positioning blocks extending downward from the top of the mounting groove, and the positioning blocks are used for positioning and installing the filter.

[0010] Preferably, the number of positioning blocks is four, and all of them are arranged in an L-shaped structure.

[0011] Preferably, the lens mounting part is provided with a cylindrical structure, the inner side of the lens mounting part is provided with internal threads, and the outer side of the lens is provided with external threads.

[0012] Preferably, the inner wall of the lens mounting part is provided with an annular glue dispensing groove, which is located near the upper opening of the lens mounting part.

[0013] Preferably, it also includes a PCBA board disposed at the bottom of the lens base and a chip fixed on the PCBA board, wherein the central axis of the lens mounting part is aligned with the center of the chip.

[0014] Preferably, the top of the lens base is provided with a front positioning post, and the bottom of the lens base is provided with a rear positioning post; both the front positioning post and the rear positioning post are provided with reinforcing ribs on their sides.

[0015] Preferably, the lens base is provided with a base fixing hole.

[0016] The beneficial effects of this utility model are as follows:

[0017] The high-precision, high-flatness security lens base of this utility model features multiple independently distributed leveling bosses at the bottom of the lens base, dividing the mounting reference plane into several individually adjustable areas. This naturally divides the bottom surface of the corresponding mold into multiple independent repair surfaces, effectively solving the problem of difficult mold repair in traditional integral bases. The mold area corresponding to each leveling boss can be independently and precisely repaired, enabling targeted correction of local unevenness and avoiding mutual interference caused by overall adjustment in traditional mold repair methods. This modular leveling structure not only simplifies the mold repair process and makes mold maintenance more precise and efficient, but also adaptively compensates for micro-deviations in the mounting surface during assembly, ensuring the stability of lens installation. At the same time, it significantly reduces mold processing and maintenance costs, resulting in better practicality and economy. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the high-precision, high-flatness security lens base of this utility model;

[0019] Figure 2 for Figure 1 An exploded structural diagram of a high-precision, high-flatness security lens base.

[0020] Figure 3 for Figure 1 A structural explosion diagram of a high-precision, high-flatness security lens base from another angle;

[0021] Figure 4 This is a schematic diagram of the lens base in this utility model;

[0022] Figure 5 This is a structural schematic diagram of the lens base in this utility model from another angle;

[0023] Numbering on the map:

[0024] 10-Lens; 11-External thread; 20-Lens base; 30-Base body; 31-Front-end positioning post; 32-Rear-end positioning post; 33-Base fixing hole; 34-Reinforcing rib; 40-Lens mounting part; 41-Internal thread; 42-Glue groove; 50-Leveling part; 51-Connecting base; 52-Leveling boss; 53-Clearing space; 60-Mounting slot; 61-Through hole; 62-Positioning block; 70-PCBA board; 80-Chip. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," 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 this utility model and 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 this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] like Figures 1 to 5As shown, this utility model presents a high-precision, high-flatness security lens base for mounting a lens 10. The high-precision, high-flatness security lens base includes a lens base 20, which comprises a base body 30, a lens mounting portion 40 located at the top of the base body 30, and a leveling portion 50 located at the bottom of the base body 30. The lens mounting portion 40 is used for mounting the lens 10. The leveling portion 50 includes a connecting base 51 integrally formed on the bottom of the base body 30 and multiple leveling bosses 52 protruding from the bottom of the connecting base 51. The leveling bosses 52 are spaced apart, and their bottoms collectively form the mounting reference plane of the lens base 20. A clearance gap 53 is formed between adjacent leveling bosses 52. By setting multiple independently distributed leveling bosses 52, the mounting reference plane is divided into several individually adjustable areas, naturally dividing the corresponding mold bottom surface into multiple independent mold-repairing surfaces. In actual processing, when the flatness of the base needs to be adjusted, only the leveling boss 52 in the corresponding area needs to be locally adjusted, without processing the entire bottom surface. This design effectively solves the problem of difficult mold repair for traditional integral bases, significantly improving mold repair efficiency and accuracy. At the same time, the clearance 53 provides operating space for the mold repair tools, further facilitating mold repair operations.

[0029] A further improvement to the above solution is that, in this embodiment, there are two leveling protrusions 52, symmetrically distributed on both sides of the bottom of the connecting base 51. Specifically, both leveling protrusions 52 are U-shaped structures with their openings facing each other, together forming a rectangular support frame. This structure provides better resistance to deformation, and the resulting rectangular frame offers a more balanced distribution of support force. Furthermore, in practical applications, the number and shape of the leveling protrusions 52 can be adjusted according to the size of the lens base 20, and can be arc-shaped, triangular, or other shapes.

[0030] A further improvement to the above scheme is that the connecting base 51 adopts a ring-shaped structure design, with a downward-opening mounting groove 60 formed on the inner side of the connecting base 51. A through hole 61 communicating with the lens mounting part 40 is provided at the top inner side of the mounting groove 60. Four L-shaped positioning blocks 62 are evenly distributed at the top inner side of the mounting groove 60, extending downwards from the top of the mounting groove 60 to collectively form a precise positioning system for the filter. The combination of the ring-shaped connecting base 51 and the L-shaped positioning blocks 62 achieves multi-functional integration. The mounting groove 60 provides assembly space for external components, the through hole 61 ensures unobstructed optical pathways, and the four equidistantly distributed L-shaped positioning blocks 62 form a stable four-point positioning system, effectively controlling the installation position deviation of the filter and exhibiting excellent shock resistance. The number and structure of the positioning blocks 62 can be adjusted according to different optical system requirements, but at least three positioning points are required to ensure positioning stability.

[0031] A further improvement to the above design is that the lens mounting part 40 has a cylindrical structure with an internal thread 41 machined on its inner side; correspondingly, the lens 10 has an external thread 11 machined on its outer side; the internal thread 41 and the external thread 11 form a threaded connection. This threaded connection method ensures the stability of the lens 10 installation and facilitates precise focus adjustment. To further enhance the reliability of the connection, an annular glue groove 42 is provided on the inner wall of the lens mounting part 40 near the upper opening, forming an appropriate glue-accommodating space; during actual assembly, after the threaded connection is completed, an appropriate amount of glue is injected through the glue groove 42, which can prevent the threads from loosening and maintain good sealing performance.

[0032] A further improvement to the above solution is that a PCBA board 70 is provided at the bottom of the lens base 20, and a chip 80, specifically an image sensor chip 80, is fixedly mounted on the PCBA board 70; the central axis of the lens mounting part 40 is aligned with the center of the chip 80. The chip 80 accurately calculates the flatness deviation of the base bottom surface by detecting the angle between the optical axis of the lens 10 and its photosensitive plane. The system can feed back the detection data to the mold repair process, and the operator can selectively adjust the corresponding area of ​​the mold according to the measurement results, achieving precise closed-loop control and improving mold repair efficiency.

[0033] A further improvement to the above solution is the addition of a front-end positioning post 31 and a rear-end positioning post 32 at the top and bottom of the lens base 20, respectively. These posts provide support and positioning for the overall structure of the lens base 20. Simultaneously, reinforcing ribs 34 are provided on the sides of the front-end and rear-end positioning posts 31 and 32; these ribs ensure structural rigidity and prevent shrinkage marks during injection molding. The combined design of the front-end positioning post 31, rear-end positioning post 32, and reinforcing ribs 34 enhances the base's resistance to deformation, making it particularly suitable for security monitoring scenarios requiring long-term stable operation.

[0034] A further improvement to the above solution is that a base fixing hole 33 is provided on the lens base 20 to fix the entire lens 10 assembly to the device housing. A local reinforcement structure is also provided around the fixing hole to effectively disperse the installation stress and avoid base deformation caused by long-term use.

[0035] Compared to existing technologies, the high-precision, high-flatness security lens base of this utility model features multiple independently distributed leveling bosses 52 at the bottom of the lens base 20. This divides the mounting reference plane into several individually adjustable areas, naturally dividing the corresponding mold bottom surface into multiple independent mold repair surfaces. This effectively solves the problem of difficult mold repair in traditional integral bases. The mold area corresponding to each leveling boss 52 can be independently and precisely repaired, specifically correcting local unevenness and avoiding mutual interference caused by overall adjustment in traditional mold repair methods. This modular leveling structure not only simplifies the mold repair process and makes mold maintenance more precise and efficient, but also adaptively compensates for micro-deviations in the mounting surface during assembly, ensuring the stability of the lens 10 installation. At the same time, it significantly reduces mold processing and maintenance costs, resulting in better practicality and economy.

[0036] The above description merely illustrates the preferred technical solution of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A high-precision, high-flatness security lens mount for mounting lenses, characterized in that, The device includes a lens mount, comprising a base body, a lens mounting portion disposed on the top of the base body, and a leveling portion disposed on the bottom of the base body; the lens mounting portion is used for mounting the lens; the leveling portion includes a connecting base integrally formed on the bottom of the base body and a plurality of leveling bosses protruding from the bottom of the connecting base; the leveling bosses are spaced apart, and the bottom of each leveling boss together forms the mounting reference plane of the lens mount, with clearance gaps formed between adjacent leveling bosses.

2. The high-precision, high-flatness security lens base according to claim 1, characterized in that, The number of leveling bosses is two, and they are symmetrically distributed at the bottom of the connecting base.

3. The high-precision, high-flatness security lens base according to claim 1, characterized in that, The connecting base is arranged in a ring shape, and a downward-opening mounting groove is formed on the inner side of the connecting base. The top of the inner side of the mounting groove is provided with a through hole that communicates with the lens mounting part.

4. The high-precision, high-flatness security lens base according to claim 3, characterized in that, The top inner side of the mounting groove is provided with a plurality of positioning blocks arranged around the perforation. The positioning blocks extend downward from the top of the mounting groove and are used for positioning and installing the filter.

5. The high-precision, high-flatness security lens base according to claim 4, characterized in that, The number of positioning blocks is four, and all of them are arranged in an L-shaped structure.

6. The high-precision, high-flatness security lens base according to claim 1, characterized in that, The lens mounting part is arranged in a cylindrical structure, with internal threads on the inner side and external threads on the outer side of the lens.

7. The high-precision, high-flatness security lens base according to claim 1, characterized in that, The inner wall of the lens mounting part is provided with an annular glue dispensing groove, which is located near the upper opening of the lens mounting part.

8. The high-precision, high-flatness security lens base according to claim 1, characterized in that, It also includes a PCBA board disposed at the bottom of the lens base and a chip fixed on the PCBA board, wherein the central axis of the lens mounting part is aligned with the center of the chip.

9. The high-precision, high-flatness security lens base according to claim 1, characterized in that, The top of the lens base is provided with a front positioning post, and the bottom of the lens base is provided with a rear positioning post; both the front and rear positioning posts are provided with reinforcing ribs on their sides.

10. The high-precision, high-flatness security lens base according to claim 1, characterized in that, The lens base is provided with a base fixing hole.

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