CN212933209U - Waterproof lens - Google Patents

Abstract

The application provides a waterproof lens. Waterproof camera lens includes: a lens barrel having a sidewall and a plurality of lenses. The plurality of lenses are arranged on the inner surface of the side wall of the lens barrel and comprise the first lens on the outermost side of the lens. The waterproof lens further comprises a pressing ring. The pressing ring is disposed on at least one of an outer surface and an inner surface of the sidewall of the lens barrel to fix the plurality of lenses in the lens barrel. The pressing ring is provided with a front end buckled on the edge of the first lens and a front end inner surface opposite to the first lens. The first lens is sealed in the lens barrel through a gasket arranged between the pressing ring and the first lens, or a glue layer film arranged on the inner surface of the front end, or a groove arranged on the inner surface of the front end, and glue is filled in the groove. The waterproof lens provided by the application realizes good waterproof performance on the premise of not additionally increasing the size of the lens and the size of the lens barrel through different settings of the pressing ring.

Description

Waterproof lens

Technical Field

The application relates to the technical field of optical equipment, and more particularly relates to a waterproof lens.

Background

In recent years, the application fields and ranges of waterproof lenses are becoming wider and wider, such as vehicle-mounted lenses, monitoring lenses, moving camera lenses and the like applied in outdoor environments. These applications have high requirements for the waterproof performance of the lens and also require miniaturization of the aperture of the lens.

The waterproof circle of current waterproof camera lens generally all is located between lens and the lens cone, and common for example adopt the rubber circle, through the waterproof circle of cooperation compression between first lens and the lens cone platform, the entering of isolated outside steam to reach waterproof dirt-proof effect.

The conventional waterproof lens has a certain limitation in product design. On one hand, according to the existing waterproof design, a waterproof ring such as a rubber ring needs to be added between the lens and the lens barrel, so that the size of the lens needs to be increased, and the size of the corresponding lens also becomes larger. As shown in fig. 9, the diameter of the lens before the rubber ring is added as the waterproof structure is 6mm, the diameter of the lens after the rubber ring is added as the waterproof structure is increased from the original 6mm to 7.7mm, and the diameter of the corresponding lens barrel is also increased from the original 7.7mm to 8.5 mm; on the other hand, the waterproof ring in this kind of waterproof structure, for example, the rubber circle can receive the effort of axial (along the optical axis direction of camera lens), and this axial force can make waterproof circle produce radial deformation, and traditional rubber circle material is soft partially, and easy atress warp, the condition such as fracture takes place, can lead to the waterproof performance of camera lens to worsen finally.

Therefore, there is a high necessity for a waterproof lens that can resist radial deformation of a waterproof structure without increasing the size of a lens or the size of the lens additionally due to the addition of the waterproof structure.

SUMMERY OF THE UTILITY MODEL

The present application provides a waterproof lens that can solve at least or partially at least one of the above-mentioned disadvantages of the prior art.

One aspect of the present application provides a waterproof lens, including: a lens barrel having a sidewall; a plurality of lenses disposed on an inner surface of the sidewall of the lens barrel and including a first lens at an outermost side of the lens barrel; the pressing ring is arranged on at least one of the outer surface and the inner surface of the side wall of the lens barrel so as to fix the plurality of lenses in the lens barrel, wherein the pressing ring is provided with a front end buckled on the edge of the first lens and a front end inner surface opposite to the first lens; the waterproof lens further comprises a gasket arranged between the pressing ring and the first lens so as to seal the first lens in the lens barrel; or a glue layer film arranged on the inner surface of the front end so as to seal the first lens in the lens barrel; or, a groove is arranged on the inner surface of the front end, and glue is filled in the groove to seal the first lens in the lens barrel.

According to an embodiment of the present application, the spacer has first and second opposing faces, the first face abutting the front inner surface and the second face contacting the first lens.

According to an embodiment of the present application, the gasket is formed of a deformable hard material such that, upon receiving a pressing force applied through the pressing ring in parallel to the optical axis of the lens barrel, a cross section of the gasket is deformed and a contact area with the first lens is increased to seal the first lens in the lens barrel.

According to the embodiment of the present application, the sectional shape of the gasket is one or more of an elliptical shape, a trapezoidal shape, a rectangular shape, and an L-shape.

According to an embodiment of the present application, the gasket is made of at least one material selected from nitrile rubber, ethylene propylene diene monomer, polyurethane, silicone, PA plastic, and PTEE plastic.

According to the embodiment of the application, the adhesive layer film is arranged between the pressing ring and the first lens.

According to the embodiment of the application, the glue layer film is made by spraying glue.

According to an embodiment of the present application, a sectional shape of the groove has one or more of a rectangular shape, a semicircular shape, a triangular shape, and a trapezoidal shape.

According to an embodiment of the application, the groove has an annular, ring-like or rectangular configuration.

According to the embodiment of the application, the glue is UV curing glue or moisture absorption curing glue.

According to the embodiment of the application, the glue is filled in the groove in a dispensing mode.

According to at least one scheme of the waterproof lens provided by the application, at least one of the following beneficial effects can be achieved:

1. the waterproof lens provided by the application can not additionally increase the size of the lens or the size of the lens barrel, and is beneficial to realizing the miniaturization of the lens.

2. In a lens that adopts a conventional waterproof ring such as a rubber ring as a waterproof structure, an axial (along an optical axis direction) acting force applied to the waterproof structure may cause the waterproof ring in the waterproof structure to radially deform, resulting in a waterproof failure. The application provides a waterproof camera lens adds the gasket that deformable hard material made or takes different settings to the clamping ring in the waterproof construction in waterproof construction, can effectively prevent waterproof construction's radial deformation, makes its difficult condition such as breaking occur.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is a partial structural sectional view of a waterproof lens according to an embodiment of the present application;

FIG. 2 is an enlarged, partial cross-sectional view of a waterproof lens according to an embodiment of the present application;

fig. 3A to 3G are partial structural sectional views illustrating a waterproof lens including a sectional shape of a gasket according to an embodiment of the present application;

fig. 4 is a partial structural sectional view and a partial structural sectional enlarged view of a waterproof lens according to an embodiment of the present application;

fig. 5 is a partial structural sectional view and a partial structural sectional enlarged view of a waterproof lens according to an embodiment of the present application;

FIG. 6 is an enlarged, partial cross-sectional view of a waterproof lens according to an embodiment of the present application;

FIG. 7 is a partial structural cross-sectional view of a waterproof lens according to one embodiment of the present application;

fig. 8 is an enlarged sectional view showing a portion C in fig. 6;

FIG. 9 is an enlarged, partial cross-sectional view of a waterproof lens according to an embodiment of the present application;

fig. 10A to 10D are partial structural sectional views illustrating a waterproof lens including a section of a groove according to an embodiment of the present application; and

fig. 11 is a partial structural sectional view of a waterproof lens conventionally used in the related art.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application 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 should be noted that in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, a first direction discussed below may also be referred to as a second direction without departing from the teachings of the present application. And vice versa.

In the drawings, the thickness, size and shape of the components have been slightly adjusted for convenience of explanation. The figures are purely diagrammatic and not drawn to scale. As used herein, the terms "approximately", "about" and the like are used as table-approximating terms and not as table-degree terms, and are intended to account for inherent deviations in measured or calculated values that would be recognized by one of ordinary skill in the art.

It will be further understood that terms such as "comprising," "including," "having," "including," and/or "containing," when used in this specification, are open-ended and not closed-ended, and 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" appears after a list of listed features, it modifies that entire list of features rather than just individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.

Unless otherwise defined, all terms (including engineering and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application 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 the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Fig. 1 is a partial structural sectional view of a waterproof lens 1000 according to an embodiment of the present application; and fig. 2 is a partially cross-sectional enlarged view of a waterproof lens 1000 according to an embodiment of the present application.

As shown in fig. 1, a waterproof lens 1000 according to an embodiment of the present application may include: lens barrel 1100, a plurality of lenses 1200 and clamping ring 1300.

The lens barrel 1100 has a cylindrical shape or a substantially cylindrical shape, and may be made of a metal material, a plastic material, or the like as needed. The lens barrel 1100 includes a barrel sidewall 1110. The side wall 1110 of the lens barrel is annular or has other suitable shapes, and the inner surface 1111 of the side wall 1110 of the lens barrel may further be provided with a limiting groove, a limiting ring, a boss, etc. to form a mounting position together with the side wall 1110 for mounting the plurality of lenses 1200. Lens barrel 1100 may also mount a plurality of lenses 1200 by incorporating structures such as spacer 1500. It will be understood by those skilled in the art that the composition, structure, and mounting position and manner of the lens barrel therein, etc. can be varied to achieve the various results and advantages described in this specification without departing from the claimed subject matter.

The plurality of lenses 1200 may be made of glass or plastic. The lens 1000 may select a plurality of lenses 1200 as needed to reproduce the shot object as clearly and accurately as possible. Among the plurality of lenses 1200, the outermost lens (i.e., the lens closest to the object side of the lens 1000) of the lens 1000 may be referred to as a first lens 1210 having an annular edge protruding from the end surface of the lens barrel 1100. Each lens 1200 in the lens 1000 may have different optical parameters such as thickness, surface type, and optical power, and in the present application, the number, structure, lens installation position, and the like of the lenses included therein may be changed to obtain the respective results and advantages described in the present specification without departing from the technical solutions claimed in the present application.

Spacer 1500 as described above may be used in this embodiment, and a metallic material may be used for spacer 1500 to separate and support the individual lenses. (ii) a The plurality of lenses 1200 are disposed between the plurality of spacers 1500 and the lens barrel 1100, and each spacer 1500 can be press-fit with the top end of the corresponding lens 1200.

Referring to fig. 1, a pressing ring 1300 is further included in the system of the waterproof lens 1000. The pressing ring 1300 may be disposed on an outer surface 1112 or an inner surface 1111 of the sidewall 1110 of the lens barrel 1100 to fix the plurality of lenses 1200 in the lens barrel 1100. The pressing ring 1300 may be made of a hard metal material such as aluminum alloy, which has the advantages of high hardness, good processability, and corrosion resistance. The clamping ring 1300 has opposing front and rear ends 1310, 1320. The pressing ring 1300 is disposed on an outer surface 1112 of the sidewall 1110 of the lens barrel 1100. Wherein the front end 1310 has an inner surface 1311 opposite the first lens 1210 and an outer surface that slopes toward the first lens 1210. The front end 1310 has a cross-sectional shape similar to a hook or trapezoid, but not limited to, that can be snapped onto the convex annular rim of the first lens 1210. The rear segment 1320 surrounds the sidewall 1110 of the barrel 1100 and conforms to either the outer surface 1112 or the inner surface 1111 of the sidewall 1110. In the present application, the pressing ring 1300 can press against and prevent the plurality of lenses 1200 from displacing; moreover, the front end 1310 is fastened to the convex annular edge of the first lens 1210, so that the lens 1000 has a certain waterproof capability.

In one embodiment, the force and size against the plurality of lenses 1200 may be controlled by, for example, an external thread threaded into the sidewall 1110 of the lens barrel 1100. It will be understood by those skilled in the art that the materials, structure, shape, and connection to the side wall of the barrel may be varied to achieve the various results and advantages described herein without departing from the claimed subject matter.

As shown in fig. 2, the inner surface 1311 of the front end 1310 of the pressing ring 1300, the convex annular edge of the first lens 1210 and the side wall 1110 form a small space. The existence of this narrow and small space is unfavorable for the waterproof of camera lens. In one embodiment, gasket 1400 may be fitted at inner surface 1311 to fill the small space. The gasket 1400 is made of a deformable hard material, and may be made of at least one selected from among a rubber material such as nitrile rubber, ethylene propylene diene monomer, polyurethane, silicone, PA (polyamide) plastic, PTEE (polytetrafluoroethylene) plastic, and the like, but is not limited thereto. The gasket 1400 made of the hard material may be deformed to some extent when an external force is applied thereto. The spacer 1400 is disposed between the pressing ring 1300 and the first lens 1210, and one surface 1410 (hereinafter referred to as a first surface 1410) of the spacer 1400 completely fits to the inner surface 1111 of the sidewall 1110 of the lens barrel 1100. The other surface 1420 of the spacer 1400 opposite the surface described above (hereinafter referred to as the second surface 1420) contacts the convex annular edge of the first lens 1210.

When a pressing force parallel to the optical axis of the lens 1000 is applied to the gasket 1400 by the pressing ring 1300, the cross section of the gasket 1400 changes, and the area of the gasket 1400 in contact with the convex annular edge of the first lens 1210 correspondingly increases, so that the first lens 1210 can be sealed in the lens barrel 1100 by the dual actions of the pressing ring 1300 and the gasket 1400, and the lens 1000 can obtain good waterproof performance.

In the embodiments of the present application, the sectional shape of the gasket may be any one or more of an elliptical shape, a trapezoidal shape, a rectangular shape, and an L-shape. In the present application, the sectional shape of the spacer is not particularly limited, and the material, structure, shape, connection with other lens portions, and the like of the spacer may be changed to obtain each result and advantage described in the present specification.

Fig. 3A to 3F respectively show a sectional shape of a gasket 1400 according to an embodiment of the present application. Alternatively, the pressing ring 1300 may be disposed on the outer surface 1112 of the sidewall 1110 of the lens barrel 1100, that is, the pressing ring disposed on the lens 1000 is the outer pressing ring 1300. Spacer 1400 is disposed at inner surface 1311 of outer pressure ring 1300. As shown in fig. 3A, the cross section of the gasket 1400 is an elliptical shape, and the first surface 1410 and the second surface 1420 opposite to each other are the surfaces where the arcs corresponding to the major axes of the ellipse are located; as shown in fig. 3B, the cross-section of the gasket 1400 is rectangular, and the first face 1410 and the second face 1420 opposite to each other are surfaces on which the long sides of the rectangle are located; as shown in fig. 3C, the spacer 1400 has a trapezoidal cross-section with two opposing first and second faces 1410, 1420 that are two surfaces of different sizes on two opposing parallel sides of the trapezoid, respectively, and wherein a relatively smaller surface completely conforms to the inner surface 1311 of the outer pressure ring 1300 and a relatively larger surface contacts the first lens 1210; as shown in fig. 3D, the spacer 1400 has a trapezoidal cross-section, and the first and second opposing faces 1410, 1420 are two surfaces of different sizes on the two opposing parallel sides of the trapezoid, respectively, and the larger surface of the spacer completely fits the inner surface 1311 of the outer pressure ring 1300 and the smaller surface of the spacer contacts the first lens 1210; as shown in fig. 3E, the spacer 1400 has an L-shaped cross section, and the first and second opposite faces 1410 and 1420 are two surfaces with different sizes, respectively, of two opposite parallel sides of the L-shape, wherein the relatively larger surface completely fits the inner surface 1311 of the outer pressure ring 1300, the relatively smaller surface contacts the first lens 1210, and the two surfaces of the right-angled sides of the L-shaped cross section completely fit the inner surface 1311 of the outer pressure ring 1300 and the surface thereof extending toward the side wall 1110 of the lens barrel 1100; as shown in fig. 3F, the spacer 1400 is also L-shaped in cross-section, with opposing first and second faces 1410, 1420 being two different sized surfaces on opposite parallel sides of the L-shape, respectively, and wherein the relatively larger surface completely conforms to the inner surface 1311 of the outer bezel 1300, the relatively smaller surface contacting the first lens 1210, and the surface perpendicular to the relatively larger surface (one of the two surfaces on which the leg of the L-shaped cross-section lies) facing where the outer bezel 1300 contacts the convex annular edge of the first lens 1210.

Fig. 3G illustrates a cross-sectional shape of a shim 1400 according to an embodiment of the present application. As shown, pressing ring 1300 may be alternatively disposed on inner surface 1111 of sidewall 1110 of lens barrel 1100, i.e. pressing ring disposed on lens barrel 1000 is inner pressing ring 1300. Spacer 1400 is disposed at inner surface 1311 of inner race 1300. The spacer 1400 is also L-shaped in cross-section, with opposing first and second faces 1410, 1420 being two different sized surfaces on opposite parallel sides of the L-shape, respectively, and wherein the relatively larger surface completely conforms to the inner surface 1311 of the inner bezel 1300, the relatively smaller surface contacts the first lens 1210, and the surface perpendicular to the relatively larger surface (one of the two surfaces on which the leg of the L-shaped cross-section is located) completely conforms to the inner surface 1111 of the side wall 1110 of the barrel 1100.

Fig. 4 is a partial structural sectional view and a partial structural sectional enlarged view of a waterproof lens 1000 according to an embodiment of the present application; and fig. 5 is a partial structural sectional view and a partial structural sectional enlarged view of a waterproof lens 1000 according to an embodiment of the present application.

In another embodiment of the present application, the pressing ring 1300 is disposed on the outer surface 1112 of the sidewall 1110 of the lens barrel 1100, i.e. the pressing ring disposed on the lens barrel 1000 is the outer pressing ring 1300. As shown in fig. 4 and 5, a glue film may be formed on an inner surface 1311 of a front end 1310 of the outer clamping ring 1300 opposite the first lens 1210 by means of, for example, high frequency spray glue. The adhesive film is located between the outer pressing ring 1300 and the first lens 1210, and the thickness of the adhesive film is 0.01-0.1 mm. When the lens 1000 is normally assembled, the micro gap between the outer pressure ring 1300 and the first lens 1210 is filled with the adhesive film, so that the first lens 1210 is sealed in the lens barrel 1100, and the lens 1000 has a waterproof function.

Referring to fig. 4, the front end 1310 has a cross-sectional shape similar to a hook, and can be fastened to the convex annular edge of the first lens 1210, and the inner surface 1311 of the front end 1310 is perpendicular to the extension surface of the inner surface 1311 in the direction of the sidewall 1110 of the lens barrel 1100. In fig. 4, the right drawing is a partial sectional view of the outer bezel 1300 of the left drawing enlarged at a portion a of the front end 1310. As shown in the right drawing, the convex annular edge of the first lens 1210, the inner surface 1311 and the sidewall 1110 of the lens barrel 1100 together form a narrow space similar to a rectangle, i.e., a micro gap existing between the outer pressing ring 1300 and the first lens 1210, and when the adhesive film is disposed on the inner surface 1311, the adhesive film can be disposed in a range from a contact position of the inner surface 1311 and the lens 1200 to a contact position of the inner surface 1311 and the extension surface.

Further, as shown in fig. 5, the cross-sectional shape of the front end 1310 is similar to a hook shape, which can be snapped to the convex annular edge of the first lens 1210, and there is a chamfer of approximately 135 ° between the inner surface 1311 of the front end 1310 and the extension surface of the inner surface 1311 in the direction of the sidewall 1110 of the lens barrel 1100. Referring to fig. 5, the right view is an enlarged partial structural sectional view of the front end 1310 of the outer bezel 1300 of the left view at a portion B. As shown in the right drawing, a portion of the convex annular edge of the first lens 1210 corresponding to the chamfer of the inner surface 1311 is also chamfered, and the angle of the chamfered portion is substantially the same as the angle of the chamfer of the inner surface 1311, so that in this embodiment, the first lens 1210 is attached to the inner surface 1311 more closely, and a narrow space formed by the convex annular edge of the first lens 1210, the inner surface 1311 and the side wall 1110 of the lens barrel 1100 is also narrower, that is, in this embodiment, a micro gap existing between the outer pressing ring 1300 and the lens 1200 is smaller, which is beneficial to achieving the waterproof function of the lens 1000. When the adhesive layer film is provided on the inner surface 1311, the adhesive layer film may be provided in a range from a contact of the inner surface 1311 with the first lens 1210 to a contact of the inner surface 1311 with an extended surface (including a surface formed by chamfering).

Fig. 6 is a partially-sectioned enlarged view of a waterproof lens according to an embodiment of the present application. Alternatively, when pressing ring 1300 is disposed on inner surface 1111 of sidewall 1110 of lens barrel 1100, that is, pressing ring disposed on lens barrel 1000 is inner pressing ring 1300. The cross-sectional shape of the front end 1310 of the inner pressing ring 1300 is similar to a trapezoid, which can be fastened to the convex annular edge of the first lens 1210, and the inner surface 1311 of the front end 1310 is perpendicular to the extension surface of the inner surface 1311 in the direction of the sidewall 1110 of the lens barrel 1100. As shown, the convex annular edge of the first lens 1210, the inner surface 1311 and the sidewall 1110 of the lens barrel 1100 together form a narrow space, i.e., a micro gap exists between the inner pressing ring 1300 and the first lens 1210, and a glue film may be formed on the inner surface 1311 of the front end 1310 of the inner pressing ring 1300 opposite to the first lens 1210 by means of, for example, high frequency spraying glue. The thickness of the adhesive layer is 0.01-0.1 mm. When a subbing film is provided on the inner surface 1311, the subbing film may be provided in a range from where the inner surface 1311 contacts the lens 1200 to where the inner surface 1311 contacts the extended surface. When the lens 1000 is normally assembled, the micro gap between the inner ring 1300 and the first lens 1210 is filled with the adhesive film, so that the first lens 1210 is sealed in the lens barrel 1100, and the lens 1000 has a waterproof function.

Fig. 7 is a partial structural sectional view of a waterproof lens 1000 according to an embodiment of the present application; and fig. 8 is a cross-sectional enlarged view of a portion C in a partial structure of the waterproof lens 1000 in fig. 7 according to an embodiment of the present application.

In another embodiment of the present application, as shown in fig. 7 and 8, a pressing ring 1300 is disposed on an outer surface 1112 of a side wall 1110 of a lens barrel 1100, i.e., the pressing ring disposed on a lens barrel 1000 is an outer pressing ring 1300. The waterproof function of the lens 1000 can be achieved by providing a groove 1330 on an inner surface 1311 of the front end 1310 of the outer clamping ring 1300 opposite the first lens 1210, and filling with glue. The groove 1330 has a circular, ring-like, or rectangular configuration, and the groove 1330 may be continuous or discontinuous. And the profile of the groove 1330 is similar to the cross-sectional profile of the outer pressure ring 1300. In fig. 7, the cross-section of the outer pressure ring 1300 is concentric with the surface of the groove 1330. Referring to fig. 8, a portion C is located on the inner surface 1311, and grooves at the portion C are uniformly formed at both sides of a contact portion between the lens 1200 and the inner surface 1311, so that after filling with glue, the lens 1200 can be sealed in the lens barrel 1100 by the groove 1330 and the glue, and the lens 1000 achieves a good waterproof function.

The glue for filling can be UV curing glue, moisture absorption curing glue and the like, wherein the UV curing glue has the characteristics of low cost, excellent waterproof performance, simple use method and the like. The glue used for filling is not limited in this application.

Further, the sectional shape of the groove 1330 may be one or more of a rectangular shape, a semicircular shape, a triangular shape, and a trapezoidal shape. In the present application, the sectional shape of the groove is not particularly limited, and the structure, shape, and position at other lens portions of the groove and the like may be changed to obtain the respective results and advantages described in the present specification.

Fig. 9 is a partial structural sectional view of a waterproof lens 1000 according to an embodiment of the present application. As shown, pressing ring 1300 may be alternatively disposed on inner surface 1111 of sidewall 1110 of lens barrel 1100, i.e. pressing ring disposed on lens barrel 1000 is inner pressing ring 1300. The waterproof function of the lens 1000 can be achieved by providing a groove 1330 on an inner surface 1311 of a front end 1310 of the inner compression ring 1300 opposite the first lens 1210, and filling with glue. The groove 1330 has a circular, ring-like, or rectangular configuration, and the groove 1330 may be continuous or discontinuous. . And the profile of the groove 1330 is similar to the cross-sectional profile of the inner collar 1300. For example, the cross-section of inner collar 1300 and the surface of groove 1330 may be concentric circles. After the groove 1330 is filled with glue such as UV curing glue, moisture absorption curing glue, etc., the lens 1200 can be sealed in the lens barrel 1100 by the groove 1330 and the glue, and the lens 1000 realizes a good waterproof function.

Fig. 10A to 10D are partial structural sectional views illustrating a waterproof lens 1000 including a section of the groove 1330 according to an embodiment of the present application.

As shown in fig. 10A, the front end 1310 of the pressing ring 1300 has a hook-like cross-sectional shape that can be snapped onto the convex annular edge of the first lens 1210. A groove 1330 is provided on an inner surface 1311 of the front end 1310 opposite the first lens 1210. The groove 1330 has a circular, ring-like, or rectangular configuration, and the groove 1330 may be continuous or discontinuous. And the profile of the groove 1330 is similar to the cross-sectional profile of the clamping ring 1300. The cross section of the groove 1330 may be rectangular, and the groove 1330 is uniformly disposed at both sides of the contact portion of the lens 1200 and the inner surface 1311, and the groove 1330 is filled with glue, so that the lens 1000 can achieve a good waterproof function.

As shown in fig. 10B, the front end 1310 of the pressing ring 1300 has a hook-like cross-sectional shape that can be snapped onto the convex annular edge of the first lens 1210. A groove 1330 is provided on an inner surface 1311 of the front end 1310 opposite the first lens 1210. The recess 1330 has a ring-like configuration. And the profile of the groove 1330 is similar to the cross-sectional profile of the clamping ring 1300. The cross-section of the groove 1330 may be a semicircular shape, and in order to increase the size of the contact surface with the first lens 1210 formed by the groove and the glue after filling the glue, the contact surface may be set to the cross-section of the groove 1330 where the diameter of the semicircular shape is the largest. The grooves 1330 are uniformly formed on both sides of the first lens 1210 where the first lens contacts the inner surface 1311, and the grooves 1330 are filled with glue, so that the lens 1000 can achieve a good waterproof function.

As shown in fig. 10C, the front end 1310 of the pressing ring 1300 has a hook-like cross-sectional shape that can be snapped onto the convex annular edge of the first lens 1210. A groove 1330 is provided on an inner surface 1311 of the front end 1310 opposite the first lens 1210. The recess 1330 has a ring-like configuration. And the profile of the groove 1330 is similar to the cross-sectional profile of the clamping ring 1300. The cross-section of the groove 1330 may be triangular in shape, and in order to increase the size of the contact surface with the first lens 1210 that the groove and glue together form after filling with glue, the contact surface may be set to the cross-section of the groove 1330 where one side of the triangular shape is the largest. The grooves 1330 are uniformly arranged on both sides of the contact position of the lens 1200 and the inner surface 1311, and glue is filled in the grooves 1330, so that the lens 1000 has a good waterproof function.

As shown in fig. 10D, the front end 1310 of the pressing ring 1300 has a hook-like cross-sectional shape that can be snapped onto the convex annular edge of the first lens 1210. A groove 1330 is provided on an inner surface 1311 of the front end 1310 opposite the first lens 1210. The recess 1330 has a ring-like configuration. And the profile of the groove 1330 is similar to the cross-sectional profile of the clamping ring 1300. The cross section of the groove 1330 may be a trapezoid shape, and in order to increase the size of the contact surface with the lens 1200 formed by the groove and the glue together after the glue is filled, the contact surface is set to be the largest cross section of the groove 1330 where the longer one of the two parallel sides is located. The grooves 1330 are uniformly arranged on both sides of the contact position of the lens 1200 and the inner surface 1311, and glue is filled in the grooves 1330, so that the lens 1000 has a good waterproof function.

For comparison, a partial structural sectional view of a waterproof lens conventionally used in the related art is shown in fig. 11 of the present application. As shown in fig. 11, in the prior art, the conventional waterproof lens has certain limitations in product design. On the one hand, according to the existing waterproof design, a waterproof ring 10 such as a rubber ring needs to be added between the lens and the lens barrel, so that the size D1 of the lens 20 needs to be increased, and the corresponding size D2 of the lens barrel 30 also becomes larger. The diameter D1 of the lens 20 before the rubber ring is added as a waterproof structure is 6mm, the diameter D1 of the lens 20 after the rubber ring is added as a waterproof structure is increased from the original 6mm to 7.7mm, and the diameter D2 of the corresponding lens barrel 30 is also increased from the original 7.7mm to 8.5 mm; on the other hand, the waterproof ring 10 in the waterproof structure, such as a rubber ring, is subjected to an axial force (along the optical axis direction of the lens), and the axial force can cause the waterproof ring to radially deform, and the conventional rubber ring is soft in material, easy to deform under stress, and broken, and the like, which finally results in the deterioration of the waterproof performance of the lens.

The above description is only an embodiment of the present application and an illustration of the technical principles applied. It will be appreciated by a person skilled in the art that the scope of protection covered by the present application is not limited to the embodiments with a specific combination of the features described above, but also covers other embodiments with any combination of the features described above or their equivalents without departing from the technical idea. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (11)

1. A waterproof lens, comprising:

a lens barrel having a sidewall;

a plurality of lenses disposed on an inner surface of the sidewall of the lens barrel and including a first lens at an outermost side of the lens barrel; and

the pressing ring is arranged on at least one of the outer surface and the inner surface of the side wall of the lens barrel so as to fix the plurality of lenses in the lens barrel, wherein the pressing ring is provided with a front end buckled on the edge of the first lens and a front end inner surface opposite to the first lens;

its characterized in that, waterproof camera lens still includes:

a gasket disposed between the pressing ring and the first lens to seal the first lens in the lens barrel; or a glue layer film arranged on the inner surface of the front end so as to seal the first lens in the lens barrel; or, a groove is arranged on the inner surface of the front end, and glue is filled in the groove to seal the first lens in the lens barrel.

2. The waterproof lens of claim 1, wherein said spacer has first and second opposing faces, said first face abutting said front inner surface, said second face contacting said first lens.

3. The waterproof lens according to claim 1, wherein the gasket is formed of a deformable hard material so that a section of the gasket is deformed and a contact area with the first lens becomes large to seal the first lens in the lens barrel upon receiving a pressing force parallel to an optical axis of the lens by the pressing ring.

4. The waterproof lens according to claim 1, wherein a sectional shape of the gasket is one or more of an elliptical shape, a trapezoidal shape, a rectangular shape, and an L-shape.

5. A waterproof lens according to any one of claims 1 to 4, wherein said spacer is produced from one of nitrile rubber, ethylene propylene diene monomer, polyurethane, silicone, PA plastics, PTEE plastics.

6. The waterproof lens of claim 1, wherein the adhesive film is disposed between the pressing ring and the first lens.

7. The waterproof lens as claimed in claim 1 or 6, wherein said adhesive layer film is made by spraying an adhesive.

8. The waterproof lens according to claim 1, wherein a sectional shape of the groove has one or more of a rectangular shape, a circular shape, a triangular shape, and a trapezoidal shape.

9. The waterproof lens according to claim 1, wherein the groove has a ring-like, ring-like or rectangular structure.

10. The waterproof lens of claim 1, wherein said glue is a UV-cured glue or a moisture-absorbing cured glue.

11. The waterproof lens of claim 1, wherein the glue is filled in the groove by means of dispensing.

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