Self-centering fixing structure of liquid lens

Abstract

The utility model relates to a self-centering fixing structure of a liquid lens. The self-centering fixing structure comprises a lens barrel, a centering ring, a pressing ring and the liquid lens. According to the utility model, the centering ring is reasonably designed, and the inner hole of the centering ring is designed to be a tapered hole with a small upper part and a large lower part, so that when the liquid lens cone is installed on the liquid lens from top to bottom, the liquid lens cone completes self-centering operation, and then the liquid lens cone is tightly pressed by the pressing ring, so that the liquid lens is firmly fixed on the lens cone; the eccentric error caused by rotation when the pressing ring is directly pressed on the liquid lens is effectively avoided, and the performance of the lens is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lenses, in particular to a self-centering fixing structure of a liquid lens. Background Art

[0002] In zoom lenses, liquid zoom lenses are involved. In the step of fixing the liquid lens, the traditional fixing method is to refer to the fixing method of optical lenses - directly locking the liquid lens with a pressure ring thread; this fixing method will cause the liquid lens to tilt, shift or even rotate when the pressure ring contacts the liquid lens during the process of tightening the thread, so that the liquid lens is in an eccentric position in the entire lens, which ultimately affects the overall performance of the lens. Summary of the invention

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a self-centering fixing structure for a liquid lens.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A self-centering fixing structure for a liquid lens comprises a lens barrel and a liquid lens, wherein the liquid lens is pressed and fixed in a lens mounting groove of the lens barrel by a self-centering fixing assembly;

[0006] The self-centering fixing assembly includes a centering ring and a pressure ring;

[0007] The outer wall of the centering ring is slidably connected with the inner wall of the lens mounting groove, and the centering ring can only move along the axial direction of the lens barrel; the inner hole of the centering ring is a tapered hole with a small top and a large bottom, and the tapered hole presses on the liquid lens;

[0008] The pressing ring is connected to the inner wall of the lens mounting groove and is pressed on the centering ring in the centering assembly. The centering ring presses and fixes the liquid lens. Under the action of the tapered hole of the centering ring, the liquid lens completes self-centering fixation on the lens barrel.

[0009] Furthermore, there are at least two positioning points on the outer wall of the centering ring, and positioning grooves arranged along the axial direction of the lens barrel are respectively provided on the inner wall of the lens mounting groove corresponding to each positioning point. The cooperation between the positioning points and the positioning grooves ensures that the centering ring will not rotate when installed from top to bottom.

[0010] Furthermore, the outer wall of the pressure ring is connected to the inner wall of the lens mounting groove through a thread.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] By rationalizing the design of the centering ring, that is, there are more than two positioning points on the outer wall of the centering ring, it is ensured that the centering ring will not rotate when installed from top to bottom, and the liquid lens will not be driven to rotate, which can effectively avoid the deviation caused by the rotation of the liquid lens. At the same time, the inner hole of the centering ring is designed to be a tapered structure with a small top and a large bottom. When installed on the liquid lens from top to bottom, the liquid lens completes the self-centering operation, and then the liquid lens is firmly fixed on the lens barrel by pressing the pressing ring, which effectively avoids the eccentricity error caused by the rotation when the pressing ring is directly pressed on the liquid lens, and greatly improves the performance of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described in detail below with reference to the accompanying drawings and specific implementations:

[0014] Figure 1 A partial cross-sectional schematic diagram of a self-centering fixing structure of a liquid lens according to this embodiment;

[0015] Figure 2 An isometric schematic diagram of a self-centering fixing structure of a liquid lens according to this embodiment;

[0016] Figure 3 A schematic diagram of a centering ring component in a self-centering fixing structure of a liquid lens according to the present embodiment. Implementation

[0017] Please refer to Figure 1 , Figure 2 , Figure 3 Description: This embodiment provides a self-centering fixing structure of a liquid lens, comprising a lens barrel 1, a liquid lens 2 and a self-centering fixing assembly. The liquid lens 2 is pressed and fixed in the lens mounting groove of the lens barrel 1 by the self-centering fixing assembly. The specific structure is as follows:

[0018] Wherein, the self-centering fixing assembly includes a centering ring 3 and a pressure ring 4;

[0019] There are at least two positioning points 31 on the outer wall of the centering ring 3, and positioning grooves 11 arranged along the axial direction of the lens barrel 1 are respectively provided on the inner wall of the lens mounting groove corresponding to each positioning point 31. Through the cooperation between the positioning points 31 and the positioning grooves 11, it is ensured that the centering ring 3 can only move along the axial direction of the lens barrel 1 and will not rotate when installed from top to bottom; the inner hole of the centering ring 3 is a tapered hole 32 which is small at the top and large at the bottom, and the tapered hole 32 presses on the liquid lens 2.

[0020] The outer wall of the pressing ring 4 is connected to the inner wall of the lens mounting groove through a thread and is pressed on the centering ring 3 in the centering assembly.

[0021] In this embodiment, the liquid lens 2 is placed from top to bottom into the lens mounting groove of the lens barrel 1. The outer diameter of the liquid lens 2 is smaller than the inner diameter of the lens mounting groove. The liquid lens 2 can move freely in the radial direction of the lens mounting groove. After the centering ring 3 is matched with the positioning groove 11 on the lens barrel 1 by relying on the outer diameter positioning point 31, it is placed on the lens barrel 1 from top to bottom, and the pressing ring 4 is screwed on the lens barrel 1 through threads. After the pressing ring 4 is tightened, it is pressed on the centering ring 3. Under the action of the tapered hole 32 on the centering ring 3, the liquid lens 2 completes self-centering fixation on the lens barrel 1.

[0022] The above describes the specific implementation of the present invention, but those skilled in the art should understand that this is only an example. Those skilled in the art can make various changes or modifications to this implementation without departing from the principle and essence of the present invention, but these changes and modifications are all within the scope of protection of the present invention.

Claims

1. A self-centering fixing structure of a liquid lens, comprising a lens barrel and a liquid lens, Features: The liquid lens is pressed and fixed in the lens mounting groove of the lens barrel by a self-centering fixing assembly; The self-centering fixing assembly includes a centering ring and a pressure ring; The outer wall of the centering ring is slidably connected with the inner wall of the lens mounting groove, and the centering ring can only move along the axial direction of the lens barrel; the inner hole of the centering ring is a tapered hole with a small top and a large bottom, and the tapered hole presses on the liquid lens; The pressing ring is connected to the inner wall of the lens mounting groove and is pressed on the centering ring in the centering assembly. The centering ring presses and fixes the liquid lens. Under the action of the tapered hole of the centering ring, the liquid lens completes self-centering fixation on the lens barrel.

2. A self-centering fixing structure for a liquid lens according to claim 1, Features: There are at least two positioning points on the outer wall of the centering ring, and positioning grooves arranged along the axial direction of the lens barrel are respectively provided on the inner wall of the lens mounting groove corresponding to each positioning point.

3. The self-centering fixing structure of a liquid lens according to claim 1, Features: The outer wall of the pressing ring is connected to the inner wall of the lens mounting groove through a thread.

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