CN218298626U - Waterproof component and camera lens - Google Patents

Abstract

The application provides a waterproof component and camera lens, this waterproof component includes: an elastic layer; a first adhesive layer disposed on a first side of the resilient layer; a second adhesive layer disposed on a second side of the resilient layer opposite the first side; wherein the first adhesive layer and the second adhesive layer are in close contact with the elastic layer, respectively. The application provides a waterproof component forms twice waterproof construction through rationally setting up bond line and elastic layer, can improve camera lens's waterproof performance when being applied to camera lens.

Description

Waterproof component and camera lens

Technical Field

The present application relates to the field of optical elements, and more particularly, to a waterproof element and an imaging lens.

Background

The camera lens is used as human 'intelligent' eyes and widely applied to the fields of monitoring, various electronic products, vehicle-mounted images and the like. Along with the increase of the demand for high intellectualization of the camera lens, the reliability requirement of the camera lens is also continuously improved, wherein the waterproof performance of the camera lens directly influences the work and the service life of the lens.

At present, the waterproof mode of the camera lens mainly comprises single dispensing waterproof and sealing ring elastic waterproof. The dispensing and waterproofing need to be performed at the threaded connection position of the pressing ring and the lens barrel, so that the technical difficulty and cost are increased, and meanwhile, the problems of waterproofing and invalidation are often caused due to the fact that air bubbles and insufficient glue amount are easy to occur in dispensing. And current sealing washer elasticity is waterproof, and the sealing washer is mainly compressed on outer lens, and does not compress on the lens cone, comes from the foreign matter of sealing washer, overlap, lacks the material scheduling problem and can't improve, presses the problem of changing moreover and has potential waterproof inefficacy risk.

SUMMERY OF THE UTILITY MODEL

Some embodiments of the present application provide a waterproof member and a camera lens to address or partially address the above-mentioned problems or other problems.

A waterproofing element according to some embodiments of the present application includes: an elastic layer; a first adhesive layer disposed on a first side of the resilient layer; and a second adhesive layer disposed on a second side of the resilient layer opposite the first side; wherein the first adhesive layer and the second adhesive layer are in close contact with the elastic layer, respectively. According to the waterproof component of some embodiments of the present application, a first adhesive layer, an elastic layer and a second adhesive layer are sequentially arranged to form a double waterproof structure, and the double waterproof structure can simultaneously realize adhesion waterproofing of the adhesive layer and compression waterproofing of the elastic layer, thereby improving waterproof performance of the waterproof component.

In one embodiment of the present application, the elastic layer, the first adhesive layer, and the second adhesive layer are made of materials deformable by a force, so that the waterproof element is deformable and bendable by a force, and when the waterproof element is applied to a camera lens, the waterproof function against direct pressure and lateral pressure can be easily achieved.

In one embodiment of the present application, the material of the elastic layer comprises rubber or silicone.

In one embodiment of the present application, the thickness of the elastic layer ranges from 0.1mm to 1.6mm.

In one embodiment of the present application, at least one of the first adhesive layer and the second adhesive layer comprises at least one adhesive layer, wherein each of the adhesive layers has a thickness ranging from 0.05mm to 0.3mm.

In one embodiment of the present application, the material of each of the adhesive layers comprises a self-adhesive glue or a non-adhesive glue.

An imaging lens according to some embodiments of the present application includes: the waterproofing element of any of the above; the lens comprises a plurality of lenses, a first lens and a second lens, wherein the lenses are arranged in sequence from an object side to an image side along an optical axis, and the lenses comprise a first lens close to the object side; and a lens barrel for accommodating the plurality of lenses; the waterproof element is respectively abutted against a first end part, close to the object side, of the lens barrel and a marginal area of the first lens. According to the waterproof component that some embodiments of this application's camera lens include forms twice waterproof construction through setting up first bond line, elastic layer and second bond line in proper order, and this twice waterproof construction can realize the waterproof compression waterproof on the bonding waterproof of bond line and elastic layer simultaneously to camera lens's waterproof performance can be improved.

In one embodiment of the present application, the first end of the lens barrel includes a first step structure, and the edge region of the first lens includes a second step structure, wherein the waterproof member is in close contact with a side surface of at least one of the first step structure and the second step structure.

In one embodiment of the present application, the edge region of the first lens comprises a second step structure, wherein the waterproofing element is in close contact with the side of the first step structure and with the mesa and side of the second step structure.

In one embodiment of the present application, the waterproof member is in close contact with the side of the second stepped structure and with the mesa and the side of the first stepped structure.

In one embodiment of the present application, the waterproof member is in close contact with a mesa and a side surface which the first step structure and the second step structure have, respectively.

In one embodiment of the present application, the first end portion of the lens barrel further includes a rim portion protruding toward the object side along the optical axis, so that the first lens is fixed in the lens barrel when the rim portion is compressed.

In one embodiment of the present application, the imaging lens further includes a fixing member for fixing the first end portion of the lens barrel and the first lens.

An imaging lens according to still other embodiments of the present application includes: a waterproofing member comprising at least one adhesive layer; the lens comprises a plurality of lenses, a first lens and a second lens, wherein the lenses are arranged in sequence from an object side to an image side along an optical axis, and the lenses comprise a first lens close to the object side; and a lens barrel for accommodating the plurality of lenses; the at least one bonding layer is respectively abutted against a first end part, close to the object side, of the lens barrel and an edge area of the first lens.

In one embodiment of the present application, the waterproof member includes one adhesive layer, wherein the one adhesive layer has adhesive force and repulsive force.

In one embodiment of the present application, the waterproof member includes two or more adhesive layers, wherein at least one of the adhesive layers has adhesive force and repulsive force.

Some embodiments of the present application provide a waterproof component can form twice waterproof structure through setting up first bond line, elastic layer and second bond line, and when being applied to camera lens, this twice waterproof structure can realize the waterproof and compression waterproof on elastic layer of the bonding layer simultaneously to can improve camera lens's waterproof performance.

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, with reference to the accompanying drawings, in which:

fig. 1 shows a schematic structural view of a waterproof member according to a first embodiment of the present application;

fig. 2 is a schematic structural view showing an adhesive layer according to a first embodiment of the present application;

fig. 3 shows a schematic structural view of a first adhesive layer or a second adhesive layer according to a first embodiment of the present application;

fig. 4 shows a schematic cross-sectional view of an imaging lens according to a first embodiment of the present application;

fig. 5 shows a schematic cross-sectional view of an imaging lens according to a second embodiment of the present application;

fig. 6 shows a partially enlarged view of the imaging lens in fig. 5 at a solid circle;

fig. 7 shows a schematic cross-sectional view of an imaging lens according to a third embodiment of the present application;

fig. 8 shows a partially enlarged view of the imaging lens in fig. 7 at a solid circle;

fig. 9 shows a schematic cross-sectional view of an imaging lens according to a fourth embodiment of the present application;

fig. 10 shows a partially enlarged view of the imaging lens in fig. 9 at a solid circle.

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 the expressions first and second, etc. in the present specification are used only for distinguishing one feature from another feature, and do not indicate any limitation on the features. Thus, the first adhesive layer discussed below may also be referred to as the second adhesive layer 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.

It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" 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. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying 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 terms "exemplary," "in some examples," and "optionally" are intended to refer to examples or illustrations.

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 features in the embodiments and examples of the present application may be combined with each other without conflict.

As described above, the waterproof manner of the dispensing waterproof manner and the elastic waterproof manner of the sealing ring in the prior art often causes a waterproof failure problem. In order to at least partially address the above-mentioned problems, embodiments of the present application propose a waterproof member capable of enhancing a waterproof effect and an image pickup lens including the waterproof member. Some embodiments of the present application are described in detail below with reference to fig. 1-10.

Implementation mode one

Referring to fig. 1, in some examples, a waterproofing element 10 includes a first adhesive layer 11, an elastic layer 12, and a second adhesive layer 13, where the first adhesive layer 11 is located on a first side 121 of the elastic layer 12 and the second adhesive layer 13 is located on a second layer 122 of the elastic layer 12 opposite the first side 121. Alternatively, the first adhesive layer 11 and the second adhesive layer 13 may be in close contact with the elastic layer 12, respectively. Referring to fig. 2, at least one of the first adhesive layer 11 and the second adhesive layer 13 may alternatively include a single-layered adhesive layer 111, wherein the single-layered adhesive layer has a thickness ranging from 0.05mm to 0.3mm. Alternatively, at least one of the first adhesive layer 11 and the second adhesive layer 13 may further include a multi-layer adhesive layer 111 as shown in fig. 3, and each adhesive layer 111 of the multi-layer adhesive layer 111 has a thickness ranging from 0.05mm to 0.3mm.

In some examples, the adhesive layer 111 and the elastic layer 12 included in the first adhesive layer 11 or the second adhesive layer 13 are both made of a material deformable by force, so that the waterproof member 10 is deformable and bent by force. In particular, when the waterproof member 10 is applied to an image pickup lens (for example, an image pickup lens 400 described below), the waterproof member 10 is deformed by a force so that the direct-pressure waterproofing and the lateral-pressure waterproofing are relatively easily achieved.

As an option, the material of each of the first adhesive layer 11 and the second adhesive layer 13 includes a self-adhesive glue (i.e., having an adhesive force at normal temperature) or a non-adhesive glue. In an example in which the adhesive layer 111 includes a non-stick adhesive, the non-stick adhesive does not have an adhesive force at normal temperature, and may have an adhesive force under certain conditions such as high-temperature baking. Alternatively, the self-adhesive may comprise one of a pressure-sensitive adhesive or a foam adhesive made of an acrylic material, or may comprise an adhesive tape capable of providing a repulsive force, or a pressure-sensitive and hot-melt composite adhesive tape. In the example where the self-adhesive includes a pressure-sensitive and hot-melt composite tape, the composite tape may have adhesive force at normal temperature, and the adhesive force may be enhanced after high-temperature baking. Optionally, the non-adhesive glue comprises a hot melt glue made of a polyurethane system and a phenolic resin system.

In some cases, the material of the adhesive layer 111 included in the first adhesive layer 11 is derived from a pressure-sensitive adhesive, and the material of the adhesive layer 111 included in the second adhesive layer is derived from a hot melt adhesive, so that the adhesive force between the first adhesive layer 11 and the mating component (for example, the lens barrel 50 in the following) is provided at normal temperature, and the adhesive force between the second adhesive layer 13 and the mating component (for example, the first lens 20 in the following) is not provided, which facilitates the lens to be detached in a case where the yield of the first lens 20 is low.

It should be understood that the first adhesive layer 11 may also be a hot melt adhesive and the second adhesive layer 13 may also be a pressure sensitive adhesive, so that the first adhesive layer 11 and the lens barrel 50 have no adhesive force at normal temperature and the second adhesive layer 13 and the first lens 20 have adhesive force, which facilitates the lens barrel 50 to be disassembled with low yield.

As an option, the material of the resilient layer 12 comprises one of rubber or silicone. Alternatively, the elastic layer 12 is, for example, a sealing ring, which may be of annular structure. Alternatively, the thickness of the elastic layer 12 may range from 0.1mm to 1.6mm. Further, the thickness of the elastic layer 12 may range from 0.5mm to 1.5mm.

The waterproof member 10 according to some examples of the present application forms a double waterproof structure by sequentially disposing the first adhesive layer 11, the elastic layer 12, and the second adhesive layer 13, which can simultaneously achieve both adhesion waterproofing of the adhesive layers (e.g., the first adhesive layer 11 and the second adhesive layer 13) and compression waterproofing of the elastic layer, thereby being capable of improving waterproofing performance of the waterproof member 10.

The present embodiment also provides an imaging lens 100, and fig. 4 shows a schematic cross-sectional view of the imaging lens 100. Referring to fig. 4, the imaging lens 100 includes a plurality of lenses arranged in order from the object side to the image side along the optical axis, and in order to make the structural relationship between the lenses and the lens barrel 50 clearer, fig. 4 only takes two lenses (the first lens 20 and the second lens 30) as an example, and it should be understood that the number of lenses accommodated in the lens barrel 50 may be three or more than three. In some examples, the first lens 20 and the second lens 30 may be sequentially disposed along the optical axis, wherein the first lens 20 is disposed at a position close to the object side. Alternatively, the imaging lens 100 may further include a filter, not shown, and an imaging surface on which light rays from the object sequentially pass through respective surfaces of the plurality of lenses.

For example, optical parameters such as optical power, surface shape, and center thickness of the plurality of lenses included in the image capturing lens 100 may be set to be the same or different according to actual needs, and the present application is not limited thereto.

In some examples in which the first lens 20 is relatively insensitive to pressure in the optical axis direction, the imaging lens 100 further includes a fixing element 40, and the fixing element 40 may be used to fix the first end of the lens barrel 50 with the first lens 20. Alternatively, the fixing element 40 is, for example, a pressing ring, and the material of the pressing ring includes, for example, an aluminum alloy. Alternatively, the pressing ring may interfere with an outer surface of the lens barrel 50 near the first lens 20 and an object side surface of the first lens 20 near the lens barrel 50. It will be understood by those skilled in the art that the material, structure, shape and connection manner of the pressing ring to the lens barrel 50 and the first lens 20 can be changed to realize the function of the pressing ring described in the present specification without departing from the technical solution claimed in the present application.

With continued reference to fig. 4, the imaging lens 100 further includes a waterproof member 10, and the waterproof member 10 may be disposed between the lens barrel 50 and the first lens 20 and respectively abut against a first end portion of the lens barrel 50 close to the object side and an edge area of the first lens 20. Specifically, the first end of the lens barrel 50 may be provided with a groove 501, and the waterproof member 10 may be disposed at the bottom of the groove 501 and in contact with the bottom surface of the groove 501; at the same time, the waterproofing element 10 may also be in contact with an edge area (e.g., a non-effective optical area) of the image side surface of the first lens 20.

Illustratively, the waterproof member 10 is deformed by the pressure from the first lens 20 and the lens barrel 50, so that it can generate a squeezing elastic force, so that the two pairs of both surfaces of the waterproof member 10 are respectively in close contact with the bottom surface of the groove 501 and the edge area of the image side surface of the first lens 20, thereby achieving direct-pressure compression waterproof.

In the example where at least one of the first adhesive layer 11 and the second adhesive layer 13 of the waterproof element 10 is a hot melt adhesive, on one hand, in the case where the imaging lens 100 meets certain optical performance requirements, the hot melt adhesive can be provided with adhesive force by high-temperature baking, so that adhesion and waterproofing are achieved; on the other hand, in the case where either one of the lens barrel 50 or the first lens 20 in the image pickup 100 does not satisfy the corresponding optical performance, the lens barrel 50 and the first lens 20 can be flexibly subjected to the nondestructive detachment process, thereby facilitating further processing of the mating member that does not satisfy the corresponding optical performance.

The waterproof member 10 according to the present embodiment forms a double direct-pressure waterproof structure by providing the first adhesive layer 11, the elastic layer 12, and the second adhesive layer 13, and when the waterproof member 10 is applied to the imaging lens 100, the double waterproof structure can simultaneously achieve adhesion waterproofing of the adhesive layers and compression waterproofing of the elastic layers, thereby improving waterproofing performance of the imaging lens.

Second embodiment

The present embodiment provides an imaging lens 200, and fig. 5 shows a schematic cross-sectional view of the imaging lens 200. Referring to fig. 5, the image pickup lens 200 includes a plurality of lenses arranged in order from the object side to the image side along the optical axis, and in order to make the structural relationship between the lenses and the lens barrel 50 clearer, fig. 5 only takes two lenses (the first lens 20 and the second lens 30) as an example, and it should be understood that the number of lenses accommodated in the lens barrel 50 may be three or more than three. In some examples, the first lens 20 and the second lens 30 may be sequentially disposed along the optical axis, wherein the first lens 20 is disposed at a position close to the object side. Alternatively, the imaging lens 200 may further include a filter, not shown, and an imaging plane on which light rays from the object sequentially pass through respective surfaces of the plurality of lenses.

For example, optical parameters such as optical power, surface shape, and center thickness of the plurality of lenses included in the image capturing lens 200 may be set to be the same or different according to actual needs, which is not limited in this application.

Referring to fig. 6, in some examples, the first end of the lens barrel 50 includes a first step structure 503, the edge area (e.g., the non-optically active area) of the first lens 20 includes a second step structure 201, and the steps in the first step structure 503 and the second step structure 201 may have a mesa and a side, respectively.

Returning to fig. 5, the imaging lens 200 further includes a waterproof member 10, and the waterproof member 10 may be disposed between the lens barrel 50 and the first lens 20 and respectively abut against a first end portion of the lens barrel 50 close to the object side and an edge area of the first lens 20. It should be understood that all or part of the features related to the waterproof element 10 described in the first embodiment may be applied to the waterproof element described in the present embodiment, and therefore, the same or similar contents thereof are not described in detail herein.

In the case where the waterproof member 10 includes the first adhesive layer 11, the elastic layer 12, and the second adhesive layer 13, all of which are made of a material that is deformable by force, the waterproof member 10 is deformable by force to bend and form a specific curved shape that can be fitted with the first stepped structure 503 and the second stepped structure 201. Specifically, referring to fig. 6, the waterproof member 10 can be pressed and brought into close contact with the side of the first stepped structure 503 and with the mesa and the side which the second stepped structure 202 has. Since the waterproof member 10 can generate the pressing elastic force to the side of the first stepped structure 503, the lateral pressure waterproofing can be achieved. In some cases, the waterproof member 10 may be deformed by a force to form a curved shape similar to "L", and the waterproof member 10 having the curved shape may form a fit gap (e.g., a first fit gap 60) with the mesa of the first step structure 503 to relieve a pressure applied to the first lens 20 in the optical axis direction.

In the example where the first adhesive layer 11 and the second adhesive layer 13 of the waterproof member 10 each employ a self-adhesive, since the first adhesive layer 11 and the second adhesive layer 13 each have an adhesive function, the waterproof performance of the waterproof member 10 is enhanced. In the example where at least one of the first adhesive layer 11 and the second adhesive layer 13 of the waterproof element 10 is a hot melt adhesive, on one hand, in the case where the imaging lens 200 meets certain optical performance requirements, the hot melt adhesive can be provided with adhesive force by high-temperature baking, so that adhesion and waterproofing are achieved; on the other hand, in the case where either one of the lens barrel 50 or the first lens 20 does not satisfy the corresponding optical performance, the lens barrel 50 and the first lens 20 can be flexibly subjected to the nondestructive detachment process, thereby facilitating the further processing of the mating member that does not satisfy the corresponding optical performance. Specifically, for example, the first adhesive layer 11 is in contact with the lens barrel 50, the first adhesive layer 11 may be a hot melt adhesive, and in the case that the yield of the lens barrel 50 is low, the lens barrel 50 can be nondestructively detached at normal temperature, and the structure of the lens barrel 50 is further optimized.

In some examples in which the object side of the first lens 20 is relatively sensitive to pressure in the optical axis direction, the first end of the lens barrel 50 further includes a rim portion 502 protruding toward the object side, so that a plurality of lenses can be fixed in the lens barrel 50 when the rim portion 502 is compressed.

The waterproof member 10 according to the present embodiment can form a double direct-pressing waterproof structure by providing the first adhesive layer 11, the elastic layer 12, and the second adhesive layer 13, and when the waterproof member 10 is applied to the imaging lens 200, the double waterproof structure can simultaneously achieve adhesion waterproofing of the adhesive layers and compression waterproofing of the elastic layers, thereby improving waterproofing performance of the imaging lens.

According to the camera lens 200 of the embodiment, the first fitting gap 60 can be formed between the waterproof element 10 and the first step structure 503, and the edge covering portion 502 is disposed at the first end of the lens barrel 50, so that on one hand, the pressure on the first lens 20 along the optical axis direction can be effectively relieved, and on the other hand, the first lens 20 can be prevented from generating axial bounce force on the edge covering portion 502, the damage to the edge covering portion 502 caused by the bounce force is reduced, and the looseness caused to the camera lens 200 is further reduced.

Third embodiment

Some embodiments of the present application also provide an imaging lens 300, and fig. 7 shows a schematic cross-sectional view of the imaging lens 300. Referring to fig. 7, the image pickup lens 300 includes a plurality of lenses arranged in order from the object side to the image side along the optical axis, and in order to make the structural relationship between the lenses and the lens barrel 50 clearer, fig. 7 only takes two lenses (the first lens 20 and the second lens 30) as an example, and it should be understood that the number of lenses accommodated in the lens barrel 50 may be three or more than three. In some examples, the first lens 20 and the second lens 30 may be sequentially disposed along the optical axis, wherein the first lens 20 is disposed at a position close to the object side. Alternatively, the imaging lens 300 may further include a filter, not shown, and an imaging surface on which light rays from the object sequentially pass through respective surfaces of the plurality of lenses.

For example, optical parameters such as focal power, surface shape, and center thickness of a plurality of lenses included in the camera lens 300 may be set to be the same or different according to actual needs, which is not limited in this application.

Referring to fig. 8, in some examples, the first end of the lens barrel 50 includes a first step structure 503, the edge area (e.g., the non-optically active area) of the first lens 20 includes a second step structure 201, and the steps in the first step structure 503 and the second step structure 201 may have a mesa and a side, respectively.

Returning to fig. 7, the imaging lens 300 further includes a waterproof member 10, and the waterproof member 10 may be disposed between the lens barrel 50 and the first lens 20 and respectively abut against a first end portion of the lens barrel 50 close to the object side and an edge area of the first lens 20. It should be understood that all or part of the features related to the waterproof element 10 described in the first embodiment may be applied to the waterproof element described in the present embodiment, and therefore, the same or similar contents thereof are not described in detail herein.

In the case where the waterproofing member 10 includes the first adhesive layer 11, the elastic layer 12, and the second adhesive layer 13 each made of a material deformable by force, the waterproofing member 10 is deformed by force to bend and form a specific curved shape that can be fitted with the first step structure 503 and the second step structure 201. Specifically, referring to fig. 8, the waterproof member 10 may be pressed and brought into close contact with the side of the second stepped structure 201 and with the mesa and the side of the first stepped structure 503. Since the waterproof member 10 can generate an extrusion elastic force to the side surface of the second stepped structure 201, lateral pressure waterproofing can be achieved. In some cases, the waterproof element 10 may be deformed by a force to form a curved shape similar to "Γ", and the waterproof element 10 having the curved shape may form a fit gap (e.g., the second fit gap 70) with the mesa of the second step structure 201 to relieve a pressure to which the first lens 20 is subjected in the optical axis direction.

In the example of using self-adhesive for both the first adhesive layer 11 and the second adhesive layer 13 of the waterproof element 10, the waterproof element 10 can have the function of waterproof adhesion at the same time. In the example where at least one of the first adhesive layer 11 and the second adhesive layer 13 of the waterproof element 10 is a hot melt adhesive, on the one hand, in the case where the imaging lens 300 meets certain optical performance requirements, the hot melt adhesive can be provided with adhesive force by high-temperature baking, so that adhesion and waterproofing are achieved; on the other hand, in the case where either one of the lens barrel 50 or the first lens 20 does not satisfy the corresponding optical performance, the lens barrel 50 and the first lens 20 can be flexibly subjected to the nondestructive detachment process, thereby facilitating the further processing of the mating member that does not satisfy the corresponding optical performance. Specifically, for example, the first adhesive layer 11 is in contact with the first lens 20, the first adhesive layer 11 may be a hot melt adhesive, and in a case that the yield of the first lens 20 is low, the first lens 20 can be nondestructively detached at normal temperature, and the structure of the first lens 20 is further optimized.

In some examples in which the object side of the first lens 20 is relatively sensitive to pressure in the optical axis direction, the first end of the lens barrel 50 further includes a rim portion 502 protruding toward the object side, so that a plurality of lenses can be fixed in the lens barrel 50 when the rim portion 502 is compressed.

The waterproof member 10 according to the present embodiment can form a double direct-pressing waterproof structure by providing the first adhesive layer 11, the elastic layer 12, and the second adhesive layer 13, and when the waterproof member 10 is applied to the image pickup lens 300, the double waterproof structure can simultaneously achieve adhesion waterproofing of the adhesive layers and compression waterproofing of the elastic layers, thereby improving waterproofing performance of the image pickup lens.

According to the imaging lens 300 of the present embodiment, the second fitting gap 70 is formed between the waterproof member 10 and the second step structure 201, and the wrap-around portion 502 is provided at the first end of the lens barrel 50, so that the pressure applied to the first lens 20 in the optical axis direction can be effectively relieved; on the other hand, it is possible to prevent the first lens 20 from generating an axial repulsive force to the edge-covered portion 502, thereby reducing damage to the edge-covered portion 502 by the repulsive force and further reducing looseness of the imaging lens 200.

Embodiment IV

Some embodiments of the present application also provide an imaging lens 400, and fig. 9 shows a schematic cross-sectional view of the imaging lens 400. Referring to fig. 9, the image pickup lens 400 includes a plurality of lenses arranged in order from the object side to the image side along the optical axis, and fig. 7 only takes two lenses (the first lens 20 and the second lens 30) as an example in order to make the structural relationship between the lenses and the lens barrel 50 clearer, and it should be understood that the number of lenses accommodated in the lens barrel 50 may be three or more than three. In some examples, the first lens 20 and the second lens 30 may be sequentially disposed along the optical axis, wherein the first lens 20 is disposed at a position close to the object side. Alternatively, the imaging lens 400 may further include a filter, not shown, and an imaging surface on which light rays from the object sequentially pass through respective surfaces of the plurality of lenses.

For example, optical parameters such as focal power, surface shape, and center thickness of a plurality of lenses included in the camera lens 400 may be set to be the same or different according to actual needs, which is not limited in this application.

Referring to fig. 10, in some examples, the first end of the lens barrel 50 includes a first step structure 503, the edge area (e.g., the non-optically active area) of the first lens 20 includes a second step structure 201, and the steps in the first step structure 503 and the second step structure 201 may have a mesa and a side, respectively.

Returning to fig. 9, the imaging lens 400 further includes a waterproof member 10, and the waterproof member 10 may be disposed between the lens barrel 50 and the first lens 20 and respectively abut against a first end portion of the lens barrel 50 close to the object side and an edge area of the first lens 20. It should be understood that all or part of the features related to the waterproof element 10 described in the first embodiment may be applied to the waterproof element described in the present embodiment, and therefore, the same or similar contents are not described herein again.

In the case where the waterproofing member 10 includes the first adhesive layer 11, the elastic layer 12, and the second adhesive layer 13 each made of a material deformable by force, the waterproofing member 10 is deformed by force to bend and form a specific curved shape that can be fitted with the first step structure 503 and the second step structure 201. Specifically, referring to fig. 10, the waterproof member 10 can be pressed and brought into close contact with the lands and the sides of the first stepped structure 503 and the second stepped structure 201, respectively, so that the vertical pressure waterproofing and the lateral pressure waterproofing can be achieved. In some cases, the deformation of the waterproofing element 10 by force may form a curved shape like "L" or "Γ", and the waterproofing element 10 having this curved shape may be tightly fitted with the first step structure 503 and the second step structure 201.

In the example where the first adhesive layer 11 and the second adhesive layer 13 of the waterproof member 10 both use self-adhesive glue, the waterproof member 10 can simultaneously have the function of adhesion waterproofing. In the example where at least one of the first adhesive layer 11 and the second adhesive layer 13 of the waterproof element 10 is a hot melt adhesive, on the one hand, in the case where the imaging lens 400 meets certain optical performance requirements, the hot melt adhesive can be provided with adhesive force by high-temperature baking, so that adhesion and waterproofing are achieved; on the other hand, in the case where any one of the mating members of the image pickup lens barrel 50 or the first lens 20 does not satisfy the corresponding optical performance, the lens barrel 50 and the first lens 20 can be flexibly detached without loss, thereby facilitating further processing of the mating member that does not satisfy the corresponding optical performance.

Returning to fig. 9, in some examples in which the first lens 20 is relatively insensitive to pressure in the optical axis direction, the imaging lens 400 further includes a fixing element 40, and the fixing element 40 may be used to fix the first end of the lens barrel 50 with the first lens 20. Alternatively, the fixing element 40 is, for example, a pressing ring, and the material of the pressing ring includes, for example, an aluminum alloy. Alternatively, the pressing ring may interfere with an outer surface of the lens barrel 50 near the first lens 20 and an object side surface of the first lens 20 near the lens barrel 50. It will be understood by those skilled in the art that the material, structure, shape and connection manner of the pressing ring to the lens barrel 50 and the first lens 20 can be changed to realize the function of the pressing ring described in the present specification without departing from the technical solution claimed in the present application.

The waterproof device 10 according to the present embodiment can form a direct-pressure type and a lateral-pressure type waterproof structure by providing the first adhesive layer 11, the elastic layer 12, and the second adhesive layer 13, and when the waterproof device 10 is applied to the imaging lens 400, the two waterproof structures can simultaneously achieve adhesion waterproofing of the adhesive layers and compression waterproofing of the elastic layers, thereby improving waterproofing performance of the imaging lens. In other embodiments, the water resistant element of the camera lens may include at least one adhesive layer. In particular, in the case where the waterproof member includes one adhesive layer, the one adhesive layer may have both adhesive force and repulsive force, and in the case where the waterproof member includes two or more adhesive layers, at least one of the adhesive layers may have both adhesive force and repulsive force. Illustratively, the adhesive layer having both adhesive force and elastic force is, for example, foam. Optionally, the imaging lens further includes a lens barrel and a plurality of lenses sequentially disposed from an object side to an image side along an optical axis, where the lens barrel is configured to accommodate the plurality of lenses, the plurality of lenses includes a first lens close to the object side, and at least one bonding layer respectively abuts against a first end of the lens barrel close to the object side and a peripheral area of the first lens. It is understood that the structures and the positional relationships of the waterproof element and the first lens and the lens barrel described in embodiments 1 to 4 can be applied to the structures and the positional relationships of the waterproof element and the first lens and the lens barrel described in this embodiment, and therefore the same or similar contents as those described above are not repeated herein.

The above description is only a preferred embodiment of the present application and is illustrative of the principles of the technology employed. 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 described above. For example, the above features and (but not limited to) features having similar functions in this application are mutually replaced to form the technical solution.

Claims (10)

1. A water resistant element characterized by comprising:

an elastic layer;

a first adhesive layer disposed on a first side of the resilient layer; and

a second adhesive layer disposed on a second side of the resilient layer opposite the first side;

wherein the first adhesive layer and the second adhesive layer are in close contact with the elastic layer, respectively.

2. The waterproofing element according to claim 1 wherein the materials of said elastic layer, said first adhesive layer and said second adhesive layer are all deformable by force.

3. The waterproofing element according to claim 1 wherein the material of said resilient layer comprises rubber or silicone.

4. The waterproofing element according to claim 1, wherein the thickness of said elastic layer ranges from 0.1mm to 1.6mm.

5. The waterproofing element according to claim 1 wherein at least one of said first adhesive layer and said second adhesive layer comprises at least one adhesive layer, wherein each of said adhesive layers has a thickness in the range of 0.05mm to 0.3mm.

6. The waterproofing element according to claim 5 wherein the material of each of said adhesive layers comprises a self-adhesive glue or a non-adhesive glue.

7. An imaging lens comprising:

a waterproofing element according to any one of claims 1 to 6;

the lens comprises a plurality of lenses, a first lens and a second lens, wherein the lenses are arranged in sequence from an object side to an image side along an optical axis, and the lenses comprise a first lens close to the object side; and

a lens barrel for accommodating the plurality of lenses;

the waterproof element is respectively abutted against a first end part, close to the object side, of the lens barrel and a marginal area of the first lens.

8. The imaging lens according to claim 7, wherein the first end portion of the lens barrel includes a first step structure, and an edge area of the first lens includes a second step structure, wherein the waterproof member is in close contact with a side surface of at least one of the first step structure and the second step structure.

9. The imaging lens according to claim 8, wherein the water-repellent member is in close contact with a side surface of the first stepped structure and with a mesa and a side surface of the second stepped structure.

10. An imaging lens comprising:

a waterproofing element comprising at least one adhesive layer;

the lens comprises a plurality of lenses, a first lens and a second lens, wherein the lenses are arranged from an object side to an image side along an optical axis in sequence, and the lenses comprise a first lens close to the object side; and

a lens barrel for accommodating the plurality of lenses;

the at least one bonding layer respectively abuts against a first end portion, close to the object side, of the lens barrel and a marginal area of the first lens.

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