CN222145300U - Lock clamping ring and camera lens - Google Patents

Abstract

The utility model provides a locking ring and a lens, which are used for locking and fixing lenses and comprise an annular main body part and a plurality of extending bosses, the main body part includes inside wall and lateral wall, extend the boss interval and locate on the inside wall and extend towards the locking ring center. The locking ring and the lens structure provided by the utility model can avoid deformation of the optical effective part of the lens, and in the axial direction, the lens is subjected to extrusion force in the axial direction and is transmitted to the extension boss of the locking ring, and the extension boss deforms to further prevent the surface type and curvature radius change caused by extrusion of the inner lens due to the fact that the extrusion deformation exists in the axial direction under the condition that the high-temperature expansion amount of the lens is larger than the expansion amount of the lens barrel or the low-temperature contraction amount of the lens is smaller than the contraction amount of the lens barrel. The deformation of the optical effective part of the lens is avoided by unloading the extrusion force through the deformation of the extension boss, and the imaging quality of the lens is improved.

Description

Lock clamping ring and camera lens

Technical Field

The utility model relates to the technical field of imaging lenses, in particular to a locking ring and a lens.

Background

The optical lens has the function of light transmission and is widely applied to various imaging fields such as vehicle-mounted, security and intelligent manufacturing. As a precise optical component, the optical lens has strict requirements on manufacturing and installation precision, and the imaging performance of the optical lens is sensitive at different temperatures. The optical lens is generally arranged in the lens barrel in a mutually overlapped or embedded mode, is circumferentially fixed through the inner wall of the lens barrel when assembled, is axially fixed through the locking ring, the front ring, the spacer ring and the lens barrel, but generates extrusion between components to cause the deformation of an optical effective diameter and further influence the optical performance under the condition of high temperature or low temperature due to different expansion and contraction amounts of the lens, the spacer ring and the lens barrel in the axial direction and the radial direction, namely the effective diameter of the lens is extruded and deformed to cause the change of the surface type and the curvature radius of the lens (the optical effective area is extruded to influence imaging) due to the radial expansion amount of the lens is larger than the radial expansion amount of the lens barrel at the high temperature of the traditional lens, and further the position of an imaging surface is changed to further cause the reduction of the resolving power of the lens.

Therefore, it is necessary to provide an optical lens that does not affect the optically effective area at high and low temperatures to solve the above problems.

Disclosure of utility model

In view of the above problems, an object of the present utility model is to provide a locking ring and a lens, which can avoid deformation of an optical effective portion of a lens, and has an advantage of excellent imaging quality.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

The utility model provides a locking ring which is used for locking and fixing a lens and comprises an annular main body part and a plurality of extending bosses, wherein the main body part comprises an inner side wall and an outer side wall, and the extending bosses are arranged on the inner side wall at intervals and extend towards the center of the locking ring.

Further preferably, the number of the extending bosses is three, and the extending bosses are uniformly arranged on the inner side wall of the main body part.

Further preferably, the thickness of the extending boss in the axial direction is less than 2mm.

Further preferably, threads matched with the lens barrel are arranged on the outer side wall of the locking ring, and the threads are used for being matched with the lens barrel to realize installation and fixation.

Further preferably, the locking ring further includes a buffer slot, and the buffer slot is disposed at a connection portion between the extension boss and the main body portion.

The lens comprises the locking ring, a lens and a lens cone, wherein the lens and the locking ring are arranged in the lens cone, the lens is supported on an extension boss of the locking ring, and the outer side wall of the main body of the locking ring is abutted with the inner wall of the lens cone.

The beneficial effects of the utility model are as follows:

the locking ring and the lens structure provided by the utility model can avoid deformation of the optical effective part of the lens, and in the axial direction, the lens is subjected to extrusion force in the axial direction and is transmitted to the extension boss of the locking ring, and the extension boss deforms to further prevent the surface type and curvature radius change caused by extrusion of the inner lens due to the fact that the extrusion deformation exists in the axial direction under the condition that the high-temperature expansion amount of the lens is larger than the expansion amount of the lens barrel or the low-temperature contraction amount of the lens is smaller than the contraction amount of the lens barrel. The deformation of the optical effective part of the lens is avoided by unloading the extrusion force through the deformation of the extension boss, and the imaging quality of the lens is improved.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a locking ring according to the present utility model;

FIG. 2 is a front view of a lens barrel according to the present utility model;

FIG. 3 is a schematic view of the assembly of the locking ring and the lens of FIG. 2;

FIG. 4 is a cross-sectional view of A-A of FIG. 3;

The illustration is 1-locking ring, 11-main body, 101-inner side wall, 102-outer side wall, 12-extension boss, 2-lens, 3-lens barrel, 4-optical axis.

The utility model will be further described in the following detailed description in conjunction with the above-described figures.

Detailed Description

For a better understanding of the utility model, various aspects of the utility model will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed description are merely illustrative of embodiments of the utility model and are not intended to limit the scope of the utility model in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.

It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the utility model, use of "may" means "one or more embodiments of the utility model. Also, the term "exemplary" is intended to refer to an example or illustration.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1, the present utility model provides a locking ring for locking and fixing a lens in a lens barrel. The locking ring 1 comprises an annular body portion 11 and a plurality of extension bosses 12. The main body 11 includes an inner wall 101 and an outer wall 102, and the extension boss 12 is provided on the inner wall 101 at a distance and extends toward the center of the locking ring 1. When the lens is mounted, the end of the lens is abutted with the extension boss 12 of the locking ring 1 in the axial direction. In the axial direction, since the lens is subjected to the extrusion force in the axial direction and is transferred to the extension boss 12 of the locking ring 1 when the extrusion deformation occurs in the axial direction under the condition that the high-temperature expansion amount of the lens is larger than the expansion amount of the lens barrel or the low-temperature contraction amount of the lens is smaller than the contraction amount of the lens barrel 3, the extension boss 12 deforms to prevent the internal lens from being subjected to the surface shape and curvature radius change caused by extrusion. By extending the deformation unloading extrusion force of the boss 12, the deformation of the optical effective part of the lens is avoided, and the imaging quality of the lens is improved. The direction parallel to the optical axis 4 is defined as an axial direction, and the direction extending along the outer diameter of the lens is defined as a radial direction.

More specifically, the number of the extending bosses 12 is three, and the extending bosses 12 are uniformly provided on the inner sidewall 101 of the main body 11. So that the lens uniformly transmits the extrusion force to the extension boss 12, and the extrusion force in the axial direction received by the extension boss 12 can be uniformly distributed.

The thickness of the extension boss 12 in the axial direction is less than 2mm. By controlling the thickness of the extension boss 12, deformation is concentrated on the structure of the extension boss 12 during extrusion, and the problem that the imaging of the lens is affected by the surface deformation of the lens 2 due to excessive stress is avoided.

The outer side wall 102 of the locking ring 1 is provided with threads matched with the lens barrel, and the threads are used for being matched with the lens barrel to realize installation and fixation.

In order to extend boss 12 and receive the extrusion force and can better deformation, locking ring 1 still includes the dashpot, and the buffer tank is located the junction of extension boss 12 and main part 11.

As shown in fig. 2 to 4, a lens includes the above-mentioned locking ring 1, and lens 2 and lens cone 3, and lens 2 and locking ring 1 locate in lens cone 3, and lens 2 bears on locking ring 1's extension boss 12, and it can be understood that the tip of lens 2 and locking ring 1's extension boss 12 butt in axial direction for extension boss 12 is through the extrusion force of deformation uninstallation lens 2 axial direction, avoids lens 2's deformation to lead to the face type and the radius of curvature change. The outer side wall 102 of the main body 11 of the lock ring 1 abuts against the inner wall of the lens barrel 3.

The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (6)

1. The utility model provides a lock clamping ring, its characterized in that includes annular main part (11) and a plurality of boss (12) that extend, main part (11) are including inside wall (101) and lateral wall (102), extend boss (12) interval locate on inside wall (101) and towards lock clamping ring (1) center extension.

2. A locking ring according to claim 1, wherein the number of said extension bosses (12) is three, said extension bosses (12) being uniformly provided on the inner side wall (101) of the body portion (11).

3. A locking ring according to claim 1, characterized in that the thickness of the extension boss (12) in the axial direction is less than 2mm.

4. A locking ring according to claim 1, characterized in that the outer side wall (102) of the locking ring (1) is provided with threads.

5. A locking ring according to claim 1, characterized in that the locking ring (1) further comprises a buffer groove provided at the junction of the extension boss (12) and the body part (11).

6. A lens, characterized by comprising a locking ring as claimed in any one of claims 1-5, a lens (2) and a lens barrel (3), wherein the lens (2) and the locking ring (1) are arranged in the lens barrel (3), the lens (2) is supported against an extension boss (12) of the locking ring (1), and an outer side wall (102) of a main body part (11) of the locking ring (1) is abutted against an inner wall of the lens barrel (3).