Incomplete circular lens cone

Abstract

The utility model provides an incomplete circular lens cone which is of an incomplete circular structure, a lens and a space ring are arranged in the lens cone, a clamping groove structure with a mounting notch is arranged at the end part of the lens cone, the clamping surface of the clamping groove has inclination, and the outer contour of the lens is an incomplete circular lens; a clamping ring matched with the clamping groove is arranged on the lens barrel, and the clamping ring is an incomplete circular clamping ring, can be an outer clamping ring or an inner clamping ring and is provided with a clamping protrusion structure. According to the utility model, the structure is compact, after the pressing ring and the lens barrel are aligned, the pressing ring is rotated by a certain small angle, and the convex structure of the pressing ring is tightly attached to the inclined clamping groove of the lens barrel, so that the connection and fixation with the lens barrel, the pressing of the lens and the assembly are realized. According to the utility model, the defects of tedious fixation and assembly and low reliability of the end lens of the traditional non-circular lens are solved, and the non-circular lens has the advantages of simple assembly and high efficiency, and can meet the requirement of high reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of projection lenses, in particular to a non-complete circular lens barrel. Background Art

[0002] With the rapid development of the times and the continuous advancement of science and technology, consumers are no longer satisfied with cars as merely a means of transportation. They are now demanding more and more functions and increasingly demanding technological intelligence. As intelligent products such as head-up displays (HUDs), panoramic systems, in-cabin monitoring systems (DMSs), and skylight projection systems gradually mature, the intelligent cockpit of cars is gradually moving from a concept to a superior driving experience for consumers. The car is also becoming the third activity center in people's lives, in addition to home and work.

[0003] As a crucial product for driver assistance safety, HUDs (Head-Up Displays) constantly strive for miniaturization. The projection lens itself is crucial. In situations with significant offset, the lens requires partial cutting to reduce size and facilitate installation. Traditional lenses are typically circular, with the outer lens element often secured with a circular retaining ring screwed in place. However, if the lens requires partial cutting to create a non-circular shape due to light offset and space constraints, retaining the outer lens element often requires the use of retaining springs or adhesive. This cumbersome assembly process carries a high risk of loosening. Summary of the Invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide a non-complete circular lens barrel, which has the advantages of simple assembly and high efficiency, and can meet the requirements of high reliability.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A non-complete circular lens barrel has a non-complete circular structure. An inclined snap-fit ​​groove, a mounting notch and a lens mounting structure are designed at the end of the lens barrel. A lens and a spacer are installed inside the lens barrel. A pressure ring adapted to the snap-fit ​​groove is provided at the snap-fit ​​groove, and the pressure ring has a non-complete circular structure.

[0007] Furthermore, the pressure ring is designed with a snap-fitting protrusion structure, a lens pressing structure and a wrench slot tightening structure.

[0008] Compared with the prior art, the beneficial effects of the present invention are:

[0009] This new design features a compact structure. After the pressure ring and lens barrel are aligned, they are rotated a small angle, allowing the ring's protruding snap-in structure to engage with the angled snap-in grooves in the lens barrel, securing the lens to the barrel and completing assembly. This structural fixation solves the drawbacks of traditional non-circular lens end lens fixing, which is cumbersome and lacks reliability. It offers the advantages of simple and efficient assembly, while also meeting high reliability requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic structural diagram of a non-complete circular lens barrel of the present invention;

[0011] Figure 2 It is a structural schematic diagram of the pressure ring of the utility model;

[0012] Figure 3 A schematic structural diagram of the lens barrel of the utility model;

[0013] Figure 4 It is a schematic diagram of the installation process of the utility model. DETAILED DESCRIPTION

[0014] The technical solution of the utility model is described clearly and completely below with reference to the accompanying drawings.

[0015] Reference Figure 1-3 1 shows a non-complete circular lens barrel, wherein the lens barrel 2 is a non-complete circular structure, and a lens 3 and a spacer are installed inside.

[0016] like Figure 3 As shown, the end of the lens barrel 2 is designed with an inclined snap-in groove 21, a mounting notch 22, and a lens mounting structure 23. A matching pressing ring 1 is provided at the snap-in groove. The pressing ring 1 is a non-complete circular structure.

[0017] like Figure 2 As shown, the pressing ring 1 is designed with a snap-fitting protrusion structure 11 , a lens pressing structure 12 , and a wrench slot tightening structure 13 .

[0018] Figure 4 Shows the position of the pressure ring before and after installation, combined with Figure 1-4 The installation sequence of this utility model is: ① install the lens 3 in the lens mounting structure 23 of the lens barrel 2, ② align the clamping protrusion of the pressure ring 1 with the notch of the clamping groove of the lens barrel 2 counterclockwise, ③ rotate the pressure ring 1 clockwise at a certain angle to press the lens 3.

[0019] The above description is only a preferred specific implementation method of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A non-complete circular lens barrel, characterized in that: The lens barrel (2) is a non-complete circular structure, and is provided with an inclined snap-fit ​​groove (21), a mounting notch (22), and a lens mounting structure (23) at the end of the lens barrel. A lens (3) and a spacer are installed inside the lens barrel; a pressure ring (1) adapted to the snap-fit ​​groove (21) is provided, and the pressure ring (1) is a non-complete circular structure.

2. The non-complete circular lens barrel according to claim 1, characterized in that: The pressing ring (1) is designed with a clamping protrusion structure (11), a lens pressing structure (12) and a spanner groove tightening structure (13).

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