Electric focusing lens adopting inverted back locking type pressing ring structure
By using an inverted locking ring structure and reverse lens assembly, the problem of interference between threads and interfaces in lens structure design was solved, enabling miniaturization and lightweight design of the lens.
Patent Information
- Application Number
- CN202520254304.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-02-18
AI Technical Summary
When the interface diameter requirement of existing infrared optical lenses is close to that of the lens itself, the structural design is difficult to meet the miniaturization requirements, and conventional designs are prone to interference between the thread space and the interface size.
It adopts an inverted locking ring structure, with the lens assembled in reverse. The front lens barrel and the main lens barrel are fixed by ring screws, and washers are used to separate the threaded space and the interface to avoid interference, thus achieving a miniaturized lens design.
It achieves a miniaturized structure design for the lens while meeting the requirements of focal length and F-number, avoiding lens damage and meeting the requirements of lightweight design.
Smart Images
Figure CN223637798U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of lens production and processing, and particularly relates to an electric focusing lens adopting a reverse locking type ring pressing structure. BACKGROUND
[0002] In recent years, infrared optical lenses are widely applied to various fields such as security and protection, industry, vehicle-mounted equipment and consumption, along with the rapid development of the infrared optical lens industry, the market demands the design of infrared optical lenses to be light in weight, and the aperture of an optical lens is influenced by its focal length and aperture number, so when the aperture requirement or the interface requirement approaches the aperture of the lens, it is difficult to design the structure of the lens. Therefore, the utility model provides a novel practical lens which can meet the requirement when the interface aperture requirement approaches the aperture of the lens. SUMMARY
[0003] The utility model discloses a kind of electric focusing lenses adopting reverse locking type ring pressing structure to the existing device, to solve the problem proposed in the above background.
[0004] In order to solve the above technical problems, the utility model provides the following technical scheme: an electric focusing lens adopting reverse locking type ring pressing structure, comprising front end lens barrel, main lens barrel, motor focusing group, focusing ring, characterized by: the front end lens barrel and the main lens barrel are fixed by annular screw, the front end lens barrel is internally provided with lens, the left side of lens is provided with gasket, the right side of lens is provided with O ring, the right side of O ring is provided with ring, the right end of main lens barrel is provided with focusing ring, the right part of main lens barrel is provided with motor focusing group, and motor focusing group and focusing ring are mutually matched.
[0005] Preferably, the lens is of concave-convex structure, with the convex surface facing the object side.
[0006] Compared with the prior art, the utility model has the beneficial effects that: by changing the assembly direction of the ring, the interference between the thread design and the interface design is avoided, the miniaturization design of the lens is realized, and under the condition of meeting the focal length and F number of the lens, the lens has a smaller structure aperture design. BRIEF DESCRIPTION OF DRAWINGS
[0007] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used together with embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model. In the drawings:
[0008] Figure 1 The electric focusing lens structure schematic view designed by the utility model;
[0009] Figure 2The utility model discloses an electric focusing lens structure section view designed for the utility model.
[0010] Figure 3 The utility model discloses a front end lens barrel structure section view designed for the utility model.
[0011] Figure 4 The utility model discloses an electric focusing lens structure explosion map designed for the utility model. DETAILED DESCRIPTION
[0012] The utility model discloses further non-restrictive detailed description to the technical scheme of the utility model in combination with preferred embodiments and its drawings. Obviously, the described embodiment is only a part of the embodiment of the utility model, and is not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor all belong to the range of the utility model protection.
[0013] As Figures 1-4 The utility model discloses an electric focusing lens with flip reverse lock type pressure ring structure, including front end lens barrel 1, main lens barrel 2, motor focusing group 3, focusing ring 4, it is characterized in that: front end lens barrel 1 with main lens barrel 2 uses annular screw 9 and fixes, and front end lens barrel 1 inside is provided with lens 6, and lens 6 left side is provided with washer 5, and lens 6 right side is provided with O type ring 7, and O type ring 7 right side is provided with pressure ring 8, and main lens barrel 2 right end is provided with focusing ring 4, and main lens barrel 2 right part upper end is provided with motor focusing group 3, and motor focusing group 3 and focusing ring 4 mutually cooperate, and the lens 6 is concave-convex type structure, and the convex surface is towards the object side, and the assembly direction of front end lens barrel 1 close to main lens barrel 2 is called positive assembly, and washer 5 is assembled in advance in front end lens barrel 1 first, and lens 6 is reversely assembled through pressure ring 8, and is fixed in front end lens barrel 1, and front end lens barrel 1 is again with main lens barrel 2 positive assembly through screw 9.
[0014] Through split type structure, reversely assemble pressure ring 8, avoid the thread space that needs to reserve in positive assembly, and the thread space that needs to reserve in conventional design is used to design interface, avoid the possible interference of thread space and interface size, and the front end interface distribution aperture approaches lens aperture, and the lens under this condition will appear the interference of thread space and interface space if according to conventional design, and lens 6 is reversely assembled into front end lens barrel 1, to avoid that lens barrel structural member scratches lens, will place a washer 5 in advance in front lens barrel, to avoid that lens 6 first surface directly contacts with front end lens barrel 1.
[0015] As Figure 3As shown, during the design of the front lens barrel 1, it can be seen that the distribution circle size of the front interface is close to the lens size. If the conventional design is followed and a pressure ring is installed at the front, there will be interference between the designed thread and the interface design, and the lens barrel cannot be processed. According to this design, the thread of the front lens barrel 1 is designed in the rear direction at the second surface where the lens is placed. It is separated from the lens 6 by a washer 5 in front of the lens barrel structure wall, so as to avoid direct contact between the lens 5 and the front lens barrel 1 and cause damage.
[0016] like Figure 4 As shown, during lens assembly, the washer 5 is first placed on the platform surface of the front lens barrel 1 by reverse assembly. After placement, the lens 6 is vertically and stably placed into the front lens barrel 1 by reverse assembly. After the lens 6 is placed into the front lens barrel 1, the O-ring 7 is placed, and the lens is locked by reverse assembly using the pressure ring 8 to fix the lens. Finally, the assembled lens is assembled and fixed to the main lens barrel by screws to complete the assembly.
[0017] In situations where the interface size and lens size are close to each other, which is impossible with traditional structures, this utility model designs the pressure ring as an inverted locking structure, assembling it with the lens in the opposite direction. This achieves structural design while enabling the lens to be smaller and lighter, thus meeting usage requirements.
[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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.
[0019] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. An electric focusing lens with a reverse lock ring structure, comprising a front lens barrel (1), a main lens barrel (2), a motor focusing group (3), and a focusing ring (4), characterized in that: The front lens barrel (1) and the main lens barrel (2) are fixed by a ring screw (9), the front lens barrel (1) is internally provided with a lens (6), the left side of the lens (6) is provided with a gasket (5), the right side of the lens (6) is provided with an O-shaped ring (7), the right side of the O-shaped ring (7) is provided with a pressing ring (8), the right end of the main lens barrel (2) is provided with a focusing ring (4), the right part of the main lens barrel (2) is provided with a motor focusing group (3), and the motor focusing group (3) is matched with the focusing ring (4).
2. The electric focusing lens with the structure of the reverse lock and the pressing ring according to claim 1, characterized in that: The lens (6) is a concave-convex structure, and the convex surface faces the object side.