CN217932217U

CN217932217U - Lens assembly

Info

Publication number: CN217932217U
Application number: CN202220965366.2U
Authority: CN
Inventors: 周威力; 高雄杰; 劳斌斌
Original assignee: Ningbo Sunny Automotive Optech Co Ltd
Current assignee: Ningbo Sunny Automotive Optech Co Ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-11-29
Anticipated expiration: 2032-04-22
Also published as: CN218675427U

Abstract

A lens assembly includes a first lens having a platform surface and an edge region adjacent the platform surface; the contact member abuts the flat land surface of the first lens and avoids the edge region. This application is through doing the design of keeping away the sky to contact piece, can make the contact piece dodge to the marginal area when the platform face contact with first lens, and then improve the stability of first lens to improve the imaging quality of camera lens subassembly.

Description

Lens assembly

Technical Field

The application relates to the technical field of optics correlation, in particular to a lens assembly.

Background

For the current lens assembly, the lens is usually directly assembled in the lens barrel, and is fixed by the spacer ring and the pressing ring. When other lenses, spacers, pressing rings or lens barrels are in contact with the edge areas of the lenses, especially in rigid contact, external forces applied to the edge areas of the lenses easily cause poor stability of the lenses, thereby affecting the imaging quality of the lens assembly.

When the lens assembly is provided with a plurality of lenses, two adjacent lenses contact and enclose a closed cavity, or the two adjacent lenses are spaced by the spacer, the spacer and the two adjacent lenses enclose a closed cavity, and the lenses have poor stability due to the influence of the pressure of gas in the closed cavity, so that the imaging quality of the lens assembly is influenced.

Therefore, how to provide a lens assembly to improve the stability of the lens in the lens assembly and improve the imaging quality of the lens assembly is a problem to be solved in the art.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a lens assembly which can solve the problem of poor stability of a lens caused by at least one reason in the prior art.

According to an aspect of the present application, there is provided a lens assembly including:

a first lens having a platform surface and an edge region adjacent the platform surface;

and the contact piece is abutted against the platform surface of the first lens and avoids the edge area.

According to an exemplary embodiment of the application, a minimum distance between an abutment point of the contact piece where it meets the mesa face near the edge region and an intersection point of the edge region and the mesa face is 0.1mm or more.

According to an exemplary embodiment of the present application, the contact includes a pressing ring, a spacer, a second lens or a lens barrel.

According to an exemplary embodiment of the application, the edge region is provided with a first chamfer.

According to an exemplary embodiment of the application, a side of the contact element adjacent to the platform surface is provided with a recess for avoiding the edge region when the contact element abuts the platform surface.

According to an exemplary embodiment of the present application, a depth of the groove in a direction perpendicular to the terrace face is 0.03mm or more.

According to an exemplary embodiment of the present application, a corner of an inner wall surface of the groove is provided with a second chamfer.

According to an exemplary embodiment of the application, the size of the second chamfer is c0.17mm.

According to an exemplary embodiment of the application, a side of the contact element close to the plateau surface is provided with a third chamfer for avoiding the edge region when the contact element abuts the plateau surface.

According to an exemplary embodiment of the application, the distance between the intersection of the third chamfer with the land surface and the intersection of the edge region with the land surface is 0.1mm or more.

According to another aspect of the present application, there is provided a lens assembly including:

the first lenses are arranged at intervals in the preset direction, and at least two adjacent first lenses are in contact with each other and enclose a first cavity;

and a first spacer positioned in contact with two adjacent first lenses to define a first cavity, the first spacer having a channel in communication with the first cavity.

According to an exemplary embodiment of the present application, the lens assembly further comprises:

the spacing piece is positioned between two adjacent first lenses and encloses a second cavity with the two adjacent first lenses;

a second spacer positioned between the spacer and a first lens adjacent the spacer, the second spacer having a channel in communication with the second cavity.

According to an exemplary embodiment of the present application, a side of the first lens proximate the spacer has a first flat land and an edge area contiguous with the first flat land;

the distance piece is abutted against the first flat table surface and avoids the edge area corresponding to the distance piece, and the minimum distance between the abutting point of the abutting point, close to the edge area, at the joint of the distance piece and the first flat table surface and the intersection point of the edge area corresponding to the distance piece and the first flat table surface is larger than or equal to 0.1mm.

According to an exemplary embodiment of the application, a side of the spacer close to the first lens is provided with a third chamfer for avoiding an edge area corresponding to the spacer when the spacer abuts the first flat land.

According to an exemplary embodiment of the present application, a distance between an intersection of the third chamfer and the first land and an intersection of the edge region corresponding to the spacer and the first land is 0.1mm or more.

According to an exemplary embodiment of the present application, the lens assembly further comprises a contact for abutting with the first lens, a side of the first lens near the contact having a second flat land and an edge area adjoining the second flat land;

the contact element is abutted against the second flat table surface and avoids the edge area corresponding to the contact element, and the minimum distance between the abutting point of the contact element and the second flat table surface, which is close to the edge area, and the intersection point of the edge area corresponding to the contact element and the second flat table surface is more than or equal to 0.1mm.

According to an exemplary embodiment of the present application, the contact includes a spacer, a pressing ring, a second lens or a lens barrel.

According to an exemplary embodiment of the application, a side of the contact element close to the first lens is provided with a groove for avoiding an edge area corresponding to the contact element when the contact element abuts the second flat land surface.

Compared with the prior art, the application has at least one of the following technical effects:

1) The lens subassembly that this application provided is through doing the design of keeping away the sky to contact piece, can make the contact piece dodge to the marginal area when the platform face contact with first lens to improve the stability of first lens, and improve the imaging quality of lens subassembly.

2) The lens assembly provided by the application is characterized in that a spacer is arranged between two adjacent first lenses or between the spacer and the first lens adjacent to the spacer, the spacer is provided with a channel communicated with the cavity, and the channel can lead out gas in the cavity to the outside, so that the stability of the first lenses is improved, and the imaging quality of the lens assembly is improved.

Drawings

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

fig. 1 illustrates a schematic structural diagram of a lens assembly according to an exemplary embodiment of the present application;

FIG. 2 illustrates a schematic structural diagram of a lens assembly according to an exemplary embodiment of the present application;

FIG. 3 illustrates a schematic structural diagram of a lens assembly according to an exemplary embodiment of the present application;

FIG. 4 illustrates a schematic structural diagram of a lens assembly according to an exemplary embodiment of the present application;

FIG. 5 shows a schematic structural view of the spacer of FIG. 3 or FIG. 4;

FIG. 6 illustrates a schematic structural diagram of a lens assembly according to an exemplary embodiment of the present application;

FIG. 7 illustrates a schematic structural diagram of a lens assembly according to an exemplary embodiment of the present application;

FIG. 8 illustrates a schematic structural diagram of a lens assembly according to an exemplary embodiment of the present application;

FIG. 9 illustrates a schematic structural diagram of a lens assembly according to an exemplary embodiment of the present application;

FIG. 10 illustrates a schematic structural diagram of a lens assembly according to an exemplary embodiment of the present application;

FIG. 11 illustrates a schematic structural diagram of a lens assembly according to an exemplary embodiment of the present application; and

fig. 12 illustrates a pressure contrast diagram of a lens assembly according to an exemplary embodiment of the present application with an existing lens assembly.

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, second, etc. in this specification are used only to distinguish one feature from another feature, and do not indicate any limitation on the features. Thus, a first lens discussed below may be referred to as a second lens without departing from the teachings of the present application.

In the drawings, the thickness, size, and shape of each component may have been slightly exaggerated 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. Additionally, the use of "exemplary" is intended to refer to examples or illustrations.

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 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.

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

For the vehicle-mounted lens, especially for the forward and inward looking lens, the internal lens has poor stability, thereby affecting the imaging quality of the lens. There are various factors that cause the lens to have poor stability. For example, the lens, the spacer ring, the pressing ring or the lens barrel is of a glass structure or a metal structure, and the contact manner between the lens and the pressing ring is rigid contact, when one lens is in rigid contact with another lens, the spacer ring, the pressing ring or the lens barrel, an external force applied to an edge area on the lens by the other lens, the spacer ring, the pressing ring or the lens barrel easily causes poor stability of the lens. For another example, when the lens includes a plurality of lenses, two adjacent lenses contact and enclose a sealed cavity, or two adjacent lenses are spaced by a spacer, and the spacer and two adjacent lenses enclose a sealed cavity, the lenses have poor stability due to the pressure of the gas in the sealed cavity.

In order to solve the above technical problems, the inventor has devised a novel lens assembly, which can solve the problem of poor stability of the lens caused by at least one of the above reasons in the prior art. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

According to an aspect of the present application, there is provided a lens assembly that can be applied to the field of vehicles, for example, a front view lens or an interior view lens of a vehicle. It should be understood that the lens assembly can be applied to other scenes, and the application is not limited to the application scenes.

As shown in fig. 1 to 4, the lens assembly includes a first lens 100 and a contact member 200. The first lens 100 has a plateau surface and an edge region 110 adjoining the plateau surface, the edge region 110 being configured with a first chamfer, the first chamfer comprising a chamfer or rounded corner. The contact 200 abuts the flat face of the first lens 100 and clears the edge region 110, the abutment point of the contact 200 at the abutment with the flat face near the edge region 110 and the intersection point of the edge region 110 with the flat face having a predetermined minimum separation, e.g., D ₁ 。

The lens assembly is designed to avoid the gap between the contact element 200 and the first chamfer at the edge area 110 when the contact element 200 contacts with the platform surface of the first lens 100, so that the stability of the first lens 100 is improved, and the imaging quality of the lens assembly is improved.

In an exemplary embodiment, as shown in fig. 1-4, the minimum spacing between the point of abutment of the contact 200 at the interface with the mesa surface near the edge region 110 and the intersection of the edge region 110 with the mesa surface is 0.1mm or greater. The minimum distance between the abutting point of the contact element 200 and the platform surface, which is close to the edge area 110, and the intersecting point of the edge area 110 and the platform surface is reasonably controlled, so that when the contact element 200 is in contact with the platform surface of the first lens 100, the contact element 200 can effectively avoid the first chamfer at the edge area 110, and the stability of the first lens 100 is further improved.

In an exemplary embodiment, the contact 200 includes, but is not limited to, a pressing ring, a spacer, a second lens, or a lens barrel.

In an exemplary embodiment, the first lens 100 includes one set of platform faces or two sets of platform faces, with the platform faces in each set oriented the same. When the first lens 100 includes two sets of flat surfaces, the two sets of flat surfaces are disposed on two opposite sides of the first lens 100.

It is understood that the number of flat facets included in the first lens 100 is only exemplary, and the number of flat facets included in the first lens 100 may vary according to application scenarios without departing from the teachings of the present application, and the present application is not limited thereto.

In an exemplary embodiment, as shown in fig. 1, a side of the contact 200 near the flat deck is provided with a groove 210, and the groove 210 is used for avoiding the edge area 110 when the contact 200 abuts against the flat deck, so as to improve the stability of the first lens 100 and improve the imaging quality of the lens assembly. The depth of the groove 210 in the direction perpendicular to the terrace face is preferably 0.03mm or more. The contact 200 includes, but is not limited to, a press ring or a lens barrel. The spacing between the abutment point of the inner wall surface of the recess 210 with the land surface and the intersection point of the edge region 110 with the land surface is preferably 0.1mm or more.

It is understood that the provision of the recess 210 in a partial region of the contact 200 abutting the plateau surface is merely exemplary, and that all regions of the contact 200 abutting the plateau surface may be provided with the recess 210 without departing from the teachings of the present application, which is not limited in this application.

In an exemplary embodiment, as shown in fig. 1, a corner of an inner wall surface of the groove 210 is configured with a second chamfer 211, the second chamfer 211 comprises a chamfer or a fillet, and the size of the second chamfer 211 is preferably c0.17mm. By adding the chamfer design to the corner of the inner wall surface of the groove 210, the strength of the inner wall surface of the groove 210 can be enhanced, and the deformation of the contact element 200 is avoided, so that the force transmitted to the first lens 100 due to the deformation of the contact element 200 is reduced, and the stability of the first lens 100 is further improved.

In an exemplary embodiment, as shown in fig. 2 and 3, a side of the contact 200 near the terrace surface is provided with a third chamfer 220, and the third chamfer 220 is used for avoiding the edge region 110 when the contact 200 abuts against the terrace surface, so as to improve the stability of the first lens 100 and improve the imaging quality of the lens assembly. The distance between the intersection of the third chamfer 220 with the land surface and the intersection of the edge region 110 with the land surface is greater than or equal to 0.1mm. The contact 200 includes, but is not limited to, a cage or a second lens. The third chamfer 220 comprises a chamfer or a fillet.

In an exemplary embodiment, as shown in fig. 4 and 5, the lens assembly includes a plurality of first lenses 100, and at least two adjacent first lenses 100 contact and enclose a cavity 300. The spacer 400 is located in a contact position for adjacent first lenses 100 enclosing the cavity 300, and the spacer 400 has a channel 401 communicating with the cavity 300. The channel 401 is used for guiding the gas in the cavity 300 to the outside, so that the phenomenon that the pressure of the cavity 300 is increased due to thermal expansion of the gas in the cavity 300 can be avoided, the force transmitted to the first lens 100 due to thermal expansion of the gas in the cavity 300 is reduced, and the stability of the first lens 100 is improved.

In an exemplary embodiment, as shown in fig. 3 and 5, the lens assembly includes a plurality of first lenses 100, and the contact members 200 are located between two adjacent first lenses 100 and enclose a cavity 300 with the two adjacent first lenses 100. A spacer 400 is disposed between contact 200 and a first lens 100 adjacent to contact 200, spacer 400 having a channel 401 in communication with cavity 300. The channel 401 is used for guiding the gas in the cavity 300 to the outside, so that the phenomenon that the pressure of the cavity 300 is increased due to thermal expansion of the gas in the cavity 300 can be avoided, the force transmitted to the first lens 100 due to thermal expansion of the gas in the cavity 300 is reduced, and the stability of the first lens 100 is improved. In the present embodiment, the contact 200 is a spacer. When the contact 200 is a spacer, it is not necessary to provide the spacer 400 separately, and a passage communicating with the cavity 300 may be provided in the spacer.

In the exemplary embodiment, the septa 400 include, but are not limited to, diaphragms.

In an exemplary embodiment, the plurality of first lenses 100 form a lens group, the lens group is assembled in the lens barrel, and a gap is reserved between the lens group and the lens barrel, and the gap can be communicated to the outside of the lens assembly. The channel 401 in the septum 400 can guide the air in the cavity 300 out to the gap reserved by the lens group and the lens barrel.

According to another aspect of the present application, a lens assembly is provided. The lens assembly includes a plurality of first lenses 100 and a first spacer 410 which are spaced apart in a predetermined direction. Fig. 6 is a partial schematic view of a lens assembly. As shown in fig. 6, at least two adjacent first lenses 100 contact and enclose a first cavity 310. The first spacer 410 is located at a contact position of two adjacent first lenses 100 for enclosing the first cavity 310, and the first spacer 410 has a passage 401 communicating with the first cavity 310, the passage 401 being for guiding out the gas in the first cavity 310 to the outside.

Further, fig. 7 is a partial schematic view of the lens assembly. As shown in fig. 7, the lens assembly further includes a spacer 500 and a second spacer 420. The spacer 500 is located between two adjacent first lenses 100, and encloses a second cavity 320 with the two adjacent first lenses 100. Second spacer 420 is located between spacer 500 and a first lens 100 adjacent to spacer 500, and second spacer 420 has a passage 401 communicating with second cavity 320, and passage 401 is used to lead out the gas in second cavity 320 to the outside.

The schematic structural diagrams of the first spacer 410 and the second spacer 420 are the same as the schematic structural diagram of the spacer 400 shown in fig. 5, and are not shown here.

In the lens assembly, the first spacer 410 is arranged between two adjacent first lenses 100 or the second spacer 420 is arranged between the spacer 500 and the first lens 100 adjacent to the spacer 500, and the first spacer 410 and the second spacer 420 are respectively provided with the channel 401 communicated with the first cavity 310 and the second cavity 320, so that the channel 401 can guide the gas in the first cavity 310 and the second cavity 320 out to the outside, the phenomenon of pressure increase caused by the thermal expansion of the gas in the first cavity 310 and the second cavity 320 can be avoided, the force transmitted to the first lenses 100 due to the thermal expansion of the gas in the first cavity 310 and the second cavity 320 is reduced, the stability of the first lenses 100 is further improved, and the imaging quality of the lens assembly is improved.

In the exemplary embodiment, first septa 410 and second septa 420 include, but are not limited to, diaphragms. The spacer 500 includes, but is not limited to, a spacer ring.

In an exemplary embodiment, as shown in fig. 7, the side of the first lens 100 proximate the spacer 500 has a first flat land surface and an edge area 110 contiguous with the first flat land surface, the edge area 110 being configured with a first chamfer comprising a chamfer or radius. The spacer 500 abuts the first flat surface of the first lens 100 and avoids the edge region 110 corresponding to the spacer 500, the abutting point of the spacer 500 at the junction with the first flat surface near the edge region 110 and the intersection point of the edge region 110 corresponding to the spacer 500 with the first flat surface having a predetermined minimum separation, e.g., D ₂ . By designing the spacer 500 to be a clearance, the spacer 500 can avoid the first chamfer at the edge area 110 corresponding to the spacer 500 when contacting the first flat surface, thereby further improving the stability of the first lens 100.

In an exemplary embodiment, as shown in fig. 7, a minimum distance between an abutment point of the spacer 500 where it meets the first flat land, which is close to the edge region 110, and an intersection point of the edge region 110 corresponding to the spacer 500 and the first flat land is equal to or greater than 0.1mm. The minimum distance between the abutting point of the connecting part of the spacer 500 and the first flat land, which is close to the edge area 110, and the connecting point of the edge area 110 and the first flat land, which corresponds to the spacer 500, is reasonably controlled, so that when the spacer 500 is in contact with the first flat land of the first lens 100, the spacer 500 can effectively avoid the first chamfer at the edge area 110 corresponding to the spacer 500, and the stability of the first lens 100 is further improved.

In an exemplary embodiment, as shown in fig. 7, a side of the spacer 500 close to the first lens 100 is provided with a third chamfer 220, and the third chamfer 220 corresponding to the spacer 500 is used for avoiding the edge area 110 corresponding to the spacer 500 when the spacer 500 abuts against the first flat surface of the first lens 100, so that the stability of the first lens 100 is improved, and the imaging quality of the lens assembly is improved. The distance between the intersection of the third chamfer 220 corresponding to the spacer 500 and the first land and the intersection of the edge region 110 corresponding to the spacer 500 and the first land is 0.1mm or more. The third chamfer 220 comprises a chamfer or a fillet.

In an exemplary embodiment, fig. 8 is a partial schematic view of a lens assembly. As shown in fig. 8, the lens assembly further includes a contact 200 for abutting against the first lens 100, a side of the first lens 100 adjacent to the contact 200 has a second flat land surface and an edge area 110 adjoining the second flat land surface, the edge area 110 is configured with a first chamfer, and the first chamfer includes a chamfer or a fillet. The contact member 200 abuts the second flat land of the first lens 100 and avoids the edge region 110 corresponding to the contact member 200, the abutting point near the edge region 110 where the contact member 200 meets the second flat land and the intersection point of the edge region 110 corresponding to the contact member 200 and the second flat land having a predetermined minimum separation, e.g., D ₁ 。

The lens assembly has the advantages that the clearance design is carried out on the contact piece 200, so that the contact piece 200 can avoid the first chamfer at the edge area 110 corresponding to the contact piece 200 when contacting with the first lens 100, the stability of the first lens 100 is further improved, and the imaging quality of the lens assembly is improved.

In an exemplary embodiment, as shown in fig. 8, the minimum spacing between the abutting point of the contact 200 at the junction with the second mesa surface near the edge region 110 and the junction of the edge region 110 with the second mesa surface corresponding to the contact 200 is 0.1mm or more. The minimum distance between the abutting point of the contact element 200 and the second flat table surface, which is close to the edge area 110, and the intersection point of the edge area 110 corresponding to the contact element 200 and the second flat table surface is reasonably controlled, so that when the contact element 200 is in contact with the first lens 100, the contact element 200 can effectively avoid the first chamfer of the edge area 110 corresponding to the contact element 200, and the stability of the first lens 100 is further improved.

In an exemplary embodiment, the contact 200 includes, but is not limited to, a spacer, a pressing ring, a second lens, or a lens barrel.

In an exemplary embodiment, as shown in fig. 8, a side of the contact 200 close to the first lens 100 is provided with a groove 210, and the groove 210 is used for avoiding the edge area 110 corresponding to the contact 200 when the contact 200 abuts against the second flat platform surface of the first lens 100, so that the stability of the first lens 100 is improved, and the imaging quality of the lens assembly is improved. The depth of the groove 210 is preferably 0.03mm or more. The contact 200 includes, but is not limited to, a press ring or a lens barrel. The distance between the abutment point of the inner wall surface of the recess 210 with the second flat land and the intersection point of the edge region 110 corresponding to the contact 200 with the second flat land is preferably 0.1mm or more.

In an exemplary embodiment, as shown in fig. 8, a corner of an inner wall surface of the groove 210 is configured with a second chamfer 211, the second chamfer 211 comprises a chamfer or a fillet, and the size of the second chamfer 211 is preferably c0.17mm. By adding the chamfer design to the corner of the inner wall surface of the groove 210, the strength of the inner wall surface of the groove 210 can be enhanced, and the deformation of the contact element 200 is avoided, so that the force transmitted to the first lens 100 due to the deformation of the contact element 200 is reduced, and the stability of the first lens 100 is further improved.

In an exemplary embodiment, a side of the contact 200 close to the first lens 100 is provided with a third chamfer 220, and the third chamfer 220 corresponding to the contact 200 is used for avoiding the edge area 110 corresponding to the contact 200 when the contact 200 abuts against the second flat surface of the first lens 100, so that the stability of the first lens 100 is improved, and the imaging quality of the lens assembly is improved. The distance between the intersection of the third chamfer 220 corresponding to the contact 200 and the second flat land and the intersection of the edge region 110 corresponding to the contact 200 and the second flat land is 0.1mm or more. The contact 200 includes, but is not limited to, a second lens. The contact 200 is similar in construction to that shown in fig. 2 and will not be shown here.

In an exemplary embodiment, the plurality of first lenses 100 form a lens group, the lens group is assembled in the lens barrel, and a gap is reserved between the lens group and the lens barrel, and the gap can be communicated to the outside of the lens assembly. The spacer 500 is a spacer ring. The channel 401 in the second septum 420 can lead the air in the second cavity 320 to the gap reserved between the lens group and the lens barrel.

In an exemplary embodiment, spacer 500 is a lens barrel configured with a vent hole that communicates with a channel in second spacer 420, and thus can vent gas in second cavity 320 to the outside of the lens barrel.

In an exemplary embodiment, when the spacer 500 is a spacer, it is not necessary to additionally provide the second septum 420, and only a passage communicating with the second cavity 320 may be additionally provided to the spacer.

Compared with the existing lens assembly, the lens assembly based on the above embodiment has the advantages that the maximum pressure born by the lens assembly is improved to a certain extent, the stability of the first lens 100 in the lens assembly can be improved, and the imaging quality of the lens assembly is improved. For example, as shown in fig. 12, the maximum pressure applied to the lens assembly according to the above embodiment is reduced from 8.03mpa to 3.26mpa at normal temperature and from 27.23mpa to 23.69mpa at-40 °.

Specific examples of the lens assembly applicable to the above-described embodiments are further described below with reference to the drawings.

Example 1

Fig. 9 is a schematic structural diagram illustrating a lens assembly according to embodiment 1 of the present application. As shown in fig. 9, the lens assembly includes a plurality of lenses 10, a spacer 20, a lens barrel 30, and a pressing ring 40. The plurality of lenses 10 are arranged inside the lens barrel 30 at intervals in the height direction, the spacer 20 is positioned between two adjacent lenses 10, and the pressing ring 40 is positioned outside the lens barrel 30 and abuts against the uppermost lens 10, so that the plurality of lenses 10 are stably fixed in the lens barrel 30.

The lens 10 for abutment with the pressing ring 40 has a flat face and an edge area 11 adjacent to the flat face, the edge area 11 being provided with a first chamfer comprising a chamfer or rounded corner. One side of the pressing ring 40 close to the platform surface is provided with a groove 41, and the groove 41 is used for avoiding a first chamfer at the edge area 11 when the pressing ring 40 is abutted against the lens 10, so that the stability of the lens 10 is improved, and the imaging quality of the lens assembly is improved.

Illustratively, the depth of the groove 41 in the direction perpendicular to the terrace face is preferably 0.03mm or more. The minimum distance between the abutting point of the inner wall surface of the groove 41 and the land surface and the intersection point of the edge region 11 and the land surface is preferably 0.1mm or more.

Exemplarily, a corner of an inner wall surface of the groove 41 is configured with a second chamfer 42, the second chamfer 42 includes a chamfer or rounded, and a size of the second chamfer 42 is preferably c0.17mm.

It should be understood that the partial area of the clamping ring 40 abutting the deck surface is provided with the groove 41 by way of example only, and the entire area of the clamping ring 40 abutting the deck surface may be provided with the groove 41 without departing from the teachings of the present application, which is not limited in this respect.

Example 2

Fig. 10 is a schematic structural diagram illustrating a lens assembly according to embodiment 2 of the present application. As shown in fig. 10, the lens assembly includes a plurality of lenses 10, a lens barrel 30, and a pressing ring 40. The plurality of lenses 10 are arranged inside the lens barrel 30 at intervals in the height direction, and the pressing ring 40 is located outside the lens barrel 30 and abuts against the uppermost lens 10 to stably fix the plurality of lenses 10 in the lens barrel 30.

Similar to embodiment 1, the lens 10 has a platform surface and an edge area 11 adjacent to the platform surface, the edge area 11 is configured with a first chamfer, the first chamfer includes a chamfer angle or a rounded corner, a groove 41 is disposed on a side of the pressing ring 40 close to the platform surface, and features of the groove 41 are the same as those of embodiment 1, and are not repeated here.

Unlike embodiment 1, two adjacent lenses 10 abut. One side of the lower lens 10 close to the upper lens 10 is provided with a third chamfer 12, and the third chamfer 12 is used for enabling the chamfers of the lower lens 10 and the upper lens 10 to be mutually spaced when the lower lens 10 is abutted against the upper lens 10, so that the stability of the upper lens 10 and the lower lens 1 is improved simultaneously, and the imaging quality of the lens assembly is improved. The third chamfer 12 comprises a chamfer or fillet.

Illustratively, the spacing between the intersection of the third chamfer 12 with the land surface and the intersection of the edge region 11 with the land surface is 0.1mm or greater.

Example 3

Fig. 11 is a schematic structural diagram showing a lens assembly according to embodiment 3 of the present application. As shown in fig. 11, the lens assembly includes a plurality of lenses 10, a spacer 20, a lens barrel 30, and a pressing ring (not shown). The plurality of lenses 10 are arranged inside the lens barrel 30 at intervals in the height direction, the spacer 20 is positioned between two adjacent lenses 10, and the pressing ring is positioned outside the lens barrel 30 and abuts against the uppermost lens 10, so that the plurality of lenses 10 are stably fixed inside the lens barrel 30.

Similar to embodiment 1 or embodiment 2, the lens 10 has a flat surface and an edge region 11 adjacent to the flat surface, the edge region 11 is configured with a first chamfer, the first chamfer includes a chamfer or a fillet, a groove is disposed on a side of the pressing ring close to the flat surface, and features of the groove are similar to those of embodiment 1 or embodiment 2, and are not repeated here.

Unlike embodiment 1 or embodiment 2, the spacer 20 is provided with a third chamfer 12 on a side close to the lens 10, and the third chamfer 12 is used for avoiding the first chamfer at the edge area 11 of the lens 10 when the spacer 20 abuts against the lens 10, so that the stability of the lens 10 is improved, and the imaging quality of the lens assembly is improved. The third chamfer 12 comprises a chamfer or a fillet.

Example 4

Fig. 11 is a schematic structural diagram illustrating a lens assembly according to embodiment 4 of the present application. Embodiment 4 has a plurality of same features as embodiment 3, and the description of the same features is omitted, and only different features are described.

Embodiment 4 differs from embodiment 3 in that the spacer 20 and the two adjacent lenses 10 enclose a cavity 60, the spacer 50 is located between the spacer 20 and one of the lenses 10 adjacent to the spacer 20, and the spacer 50 has a passage communicating with the cavity 60 and adapted to conduct gas in the cavity 60 to the outside. The schematic configuration of the spacer is the same as that of the spacer 400 shown in fig. 4, and will not be shown here.

Above-mentioned lens subassembly is through setting up spacer 50 between spacer 20 and the lens 10 adjacent with spacer 20, this spacer 50 disposes a passageway that communicates with cavity 60, the passageway can be derived the gas in the cavity 60 to the outside, can avoid appearing cavity 60 because of the phenomenon that the gas of its inside is heated the inflation and is leaded to the pressure increase, reduce the power that is transmitted to lens 10 because of the gas in the cavity 60 is heated the inflation, and then improve the stability of lens 10, improve the imaging quality of lens subassembly.

The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and substitutions can be made without departing from the technical principle of the present application, and these modifications and substitutions should also be regarded as the protection scope of the present application.

Claims

1. A lens assembly, comprising:

a first lens having a platform face and an edge region adjacent to the platform face;

a contact member abutting against the flat surface of the first lens and avoiding the edge area;

wherein, the contact piece is provided with a preset minimum distance between an abutting point close to the edge area and an intersection point of the edge area and the platform surface.

2. The lens assembly of claim 1, wherein the predetermined minimum separation distance is greater than or equal to 0.1mm.

3. The lens assembly of claim 1, wherein the contact comprises a press ring, a spacer ring, a second lens, or a lens barrel.

4. The lens assembly of claim 1, wherein the edge region is configured with a first chamfer.

5. The lens assembly of claim 1, wherein a side of the contact member proximate the platform surface is provided with a groove for avoiding the edge region when the contact member abuts the platform surface.

6. The lens assembly of claim 5, wherein a depth of the groove in a direction perpendicular to the platform face is equal to or greater than 0.03mm.

7. The lens assembly of claim 5, wherein a corner of an inner wall surface of the recess is configured with a second chamfer.

8. The lens assembly of claim 7, wherein the second chamfer has a size C0.17mm.

9. The lens assembly of claim 1, wherein a side of the contact member proximate the platform surface is provided with a third chamfer for avoiding the edge region when the contact member abuts the platform surface.

10. The lens assembly of claim 9, wherein a spacing between an intersection of the third chamfer and the land surface and an intersection of the edge region and the land surface is greater than or equal to 0.1mm.