CN217543496U - Optical imaging lens - Google Patents

Abstract

The utility model provides an optical imaging lens. The optical imaging lens includes: a first lens barrel; the second lens cone is abutted with the first lens cone, and the optical axis of the second lens cone is superposed with the optical axis of the first lens cone; the lens system comprises a plurality of lenses, a lens driving device and a lens driving device, wherein the plurality of lenses are sequentially arranged in two lens barrels along an optical axis, and at least one lens is arranged in a first lens barrel; the lens close to the second lens barrel in the first lens barrel is glued with the object-side end face of the second lens barrel, and the object-side end face of the second lens barrel is provided with a limiting structure so as to limit the lens close to the second lens barrel in the first lens barrel. The utility model provides an optical imaging lens among the prior art have the poor problem of structural stability.

Description

Optical imaging lens

Technical Field

The utility model relates to an optical imaging equipment technical field particularly, relates to an optical imaging camera lens.

Background

With the rapid development of science and technology, the mobile phone becomes an essential part in our life, and the communication, recording and the like of the mobile phone become a normal state of our daily life; under this background, consumers' requirements on optical imaging lenses carried on mobile phones are higher and higher, AOA lenses have become the mainstream lenses at present, but under the conventional assembly condition, the upper group lens and the lower group lens barrel are glued with glue to realize the assembly fixation of two groups of modules, but in the baking exposure process of glue, the glue can move to drive the upper group lens to move in the radial direction and even lead to the condition of product deformation, the structural stability is influenced, and when the lens displacement is serious, the upper group lens barrel can be caused to be matched, the horn mouth sharp corner position of the upper group lens barrel interferes with the lens, the imaging effect of the optical imaging lenses is influenced, and a large number of parts need to be scrapped.

That is to say, the optical imaging lens in the prior art has a problem of poor structural stability.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide an optical imaging lens, in order to solve the problem of poor structural stability of the optical imaging lens in the prior art.

In order to achieve the above object, the present invention provides an optical imaging lens, including: a first barrel; the second lens cone is abutted with the first lens cone, and the optical axis of the second lens cone is superposed with the optical axis of the first lens cone; the lens system comprises a plurality of lenses, a lens driving device and a lens driving device, wherein the plurality of lenses are sequentially arranged in two lens barrels along an optical axis, and at least one lens is arranged in a first lens barrel; the lens close to the second lens barrel in the first lens barrel is glued with the object-side end face of the second lens barrel, and the object-side end face of the second lens barrel is provided with a limiting structure so as to limit the lens close to the second lens barrel in the first lens barrel.

Furthermore, the limiting structure is continuously arranged around the circumference of the object-side end surface of the second lens barrel, the limiting structure is located at the outer periphery of the object-side end surface of the second lens barrel, the surface of the limiting structure facing the optical axis side forms an accommodating area, and at least one part of the lens in the first lens barrel, which is close to the second lens barrel, is accommodated in the accommodating area.

Furthermore, the optical imaging lens further comprises an exposure groove, the exposure groove is arranged on the limiting structure, and the exposure groove is communicated with the inner space of the second lens barrel.

Furthermore, the exposure groove includes a plurality ofly, and a plurality of exposure grooves set up around limit structure's circumference interval.

Further, a radial clearance C between the limiting structure and a lens close to the second barrel in the first barrel satisfies: c is more than or equal to 0.01mm and more than or equal to 0mm.

Further, the radial width A of the limiting structure satisfies the following conditions: a is more than or equal to 0.8mm; and/or the axial height B of the limiting structure is more than or equal to one half of the thickness of the edge of the lens close to the second lens barrel in the first lens barrel.

Further, the circumferential length E of the exposure groove on the limiting structure meets the following requirements: e is more than or equal to 1.6mm and more than or equal to 0.8mm; and/or the radial width D of the exposure groove and the radial width A of the limiting structure meet the following conditions: 2/3A is more than or equal to D and more than or equal to 1/3A.

Further, the draft angle F of the exposure groove satisfies: f is more than or equal to 30 degrees.

Further, limit structure includes a plurality ofly, and a plurality of limit structure set up around the circumference interval of the object side terminal surface of second lens cone, and limit structure sets up towards the surface of optical axis one side and the outer peripheral edges laminating of lens.

Further, the projection of the limiting structure on the object-side end surface of the second lens barrel comprises one of a circle and a polygon.

By applying the technical scheme of the utility model, the optical imaging lens comprises a first lens cone, a second lens cone and a lens, the second lens cone is abutted against the first lens cone, and the optical axis of the second lens cone is superposed with the optical axis of the first lens cone; the lens is a plurality of lenses which are sequentially arranged in the two lens barrels along the optical axis, and at least one lens is arranged in the first lens barrel; the lens close to the second lens barrel in the first lens barrel is glued with the object-side end face of the second lens barrel, and the object-side end face of the second lens barrel is provided with a limiting structure so as to limit the lens close to the second lens barrel in the first lens barrel.

The application provides an optical imaging lens consisting of two groups of lenses, wherein a first group is formed by lenses in a first lens barrel and a first lens barrel; the second lens barrel and the lenses in the second lens barrel form a second group, and the lenses in the first lens barrel, which are close to the second lens barrel, are glued with the object-side end surface of the second lens barrel, so that the assembly of the two groups of lenses can be realized. The limiting structure is arranged on the end face of the object side of the second lens barrel, the limiting structure plays a limiting role for the lens close to the second lens barrel in the first lens barrel, the angle of assembling the two groups of lenses is set, the displacement generated in the glue dispensing process of the lens and the second lens barrel is favorably reduced, meanwhile, the risk that the glue drives the lens to move and deform when the lens is pressed in the process of baking and exposing the optical imaging lens after being spliced is avoided, the assembly stability of the lens with the first lens barrel and the second lens barrel is favorably ensured, the structural stability of the optical imaging lens is further ensured, the overall performance and the imaging effect of the optical imaging lens are favorably improved, the loss of parts is reduced, and the cost is effectively saved.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the scope of the invention. In the drawings:

fig. 1 shows a schematic structural diagram of an optical imaging lens in the prior art;

fig. 2 shows a schematic structural diagram of an optical imaging lens according to an alternative embodiment of the present invention;

FIG. 3 is a dimension diagram of a position-limiting structure of the optical imaging lens shown in FIG. 2;

fig. 4 is a schematic structural view illustrating a second barrel of the optical imaging lens of fig. 2;

FIG. 5 shows a schematic view of an angle of the exposure slot of FIG. 4;

FIG. 6 is a schematic view showing another angle of the exposure slot of FIG. 4;

fig. 7 shows a schematic structural diagram of a second barrel of an optical imaging lens according to another alternative embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a first barrel; 20. a second barrel; 30. a limiting structure; 40. a lens; 50. an exposure slot; 60. a glue layer; 70. an optical axis.

Detailed Description

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 invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, all 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.

In the present application, where the contrary is not intended, the use of directional terms such as "upper, lower, top, bottom" generally refer to the orientation as shown in the drawings, or to the component itself being oriented in a vertical, perpendicular, or gravitational direction; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

Fig. 1 is a schematic structural diagram of an optical imaging lens in the prior art. As shown in the figure, a lens 40 is disposed in the first barrel 10, a plurality of lenses in the second barrel 20 are not shown in the figure, and the lens 40 in the first barrel 10 is connected and fixed in a manner of being glued to an object-side end surface of the second barrel 20, thereby realizing the assembly of the whole optical imaging lens. However, under the conventional assembly condition, when the lens 40 in the first lens barrel 10 and the second lens barrel 20 are dispensed to form the glue layer 60, the lens 40 is displaced greatly during dispensing due to the fluidity of the glue; in addition, after the glue is dispensed between the lens 40 and the second lens barrel 20, in the subsequent baking exposure process of the glue, the glue moves to drive the lens 40 to move, which may cause product deformation, and when the lens 40 is seriously displaced, which may cause the lens 40 to be matched with the first lens barrel 10, the bell-mouth sharp angle position of the first lens barrel 10 (the position at which the object side end of the first lens barrel 10 is close to the optical axis 70) may interfere with the lens 40, which may not only affect the overall structural stability of the optical imaging lens, but also affect the imaging effect of the optical imaging lens, and may easily discard a large number of parts, resulting in poor product yield.

There is the poor problem of structural stability in order to solve the optical imaging camera lens among the prior art, the utility model provides an optical imaging camera lens.

As shown in fig. 2 to fig. 7, the optical imaging lens includes a first barrel 10, a second barrel 20 and a lens 40, an object side end of the second barrel 20 abuts against an image side end of the first barrel 10, and an optical axis 70 of the second barrel 20 coincides with the optical axis 70 of the first barrel 10; the lens is multiple, the multiple lenses are arranged in two lens barrels along the optical axis 70 in sequence, at least one lens 40 is arranged in the first lens barrel 10, and the multiple lenses in the second lens barrel 20 are not shown in fig. 2; the lens 40 in the first barrel 10 close to the second barrel 20 is glued to the object-side end surface of the second barrel 20, and the object-side end surface of the second barrel 20 has a position-limiting structure 30 to limit the lens 40 in the first barrel 10 close to the second barrel 20.

The application provides an optical imaging lens consisting of two groups of lenses, wherein a first group consists of a first lens barrel 10 and a lens 40 in the first lens barrel 10; the second barrel 20 and the lenses in the second barrel 20 form a second group, and the lens 40 in the first barrel 10 close to the second barrel 20 is glued to the object-side end surface of the second barrel 20, so that the assembly of the two groups of lenses can be realized. Through set up limit structure 30 on the object side terminal surface at second lens cone 20, make limit structure 30 play spacing effect to being close to the lens 40 of second lens cone 20 in first lens cone 10, from the angle of two sets of camera lens assemblies, be favorable to reducing the displacement that lens 40 and second lens cone 20 produced in the point gluey in-process, can avoid simultaneously toasting the in-process glue that exposes optical imaging lens to glue behind the splice to drive lens 40 and remove and lens 40 receives the risk that the pressure takes place deformation, be favorable to guaranteeing lens 40 respectively with the assembly stability of first lens cone 10 and second lens cone 20, and then guarantee optical imaging lens's structural stability, be favorable to improving optical imaging lens's wholeness ability and imaging effect, reduce the loss of parts article, effectively practice thrift the cost.

It should be noted that, the optical imaging lens further includes a plurality of spacer elements (not shown in the figure), and the spacer elements are correspondingly disposed between two adjacent lenses in the plurality of lenses, so that the spacer elements support and bear two adjacent lenses. The spacing element comprises one of a spacing ring, a spacer and a light shading sheet, and can be selected according to specific conditions.

As shown in fig. 2, the position-limiting structure 30 is continuously disposed around the circumference of the object-side end surface of the second barrel 20, the position-limiting structure 30 is located at the outer peripheral edge of the object-side end surface of the second barrel 20, a surface of the position-limiting structure 30 facing the optical axis 70 forms an accommodating area, and at least a portion of the lens 40 of the first barrel 10 close to the second barrel 20 is accommodated in the accommodating area. Limiting structure 30 protrudes the setting of the object side terminal surface of second lens cone 20, and the protruding height of limiting structure 30 is not more than the marginal thickness of above-mentioned lens 40, sets up like this and makes limiting structure 30 can enclose into the accommodation region, for lens 40 provides places the position, is favorable to improving limiting structure 30's use reliability. In addition, in the assembling process, at least part of the image side end surface of the lens 40 is in glue joint with the second lens barrel 20 so as to limit the lens 40 to move in the axial direction, the limiting structure 30 is arranged around the periphery of the lens 40 so as to limit the lens 40 to move in the radial direction, the risk that the lens 40 is displaced when glue is applied to the lens 40 in the glue applying process and the subsequent baking process can be effectively reduced, the structural stability is ensured, the utilization rate of parts and the imaging quality of an optical imaging lens can be improved, and the cost is greatly reduced.

As shown in fig. 3, the radial clearance C between the limiting structure 30 and the lens 40 of the first barrel 10 close to the second barrel 20 satisfies: c is more than or equal to 0.01mm and more than or equal to 0mm. This radial clearance C can be derived by optical simulation, which is the maximum displacement that can occur in the radial direction of the lens 40 in the first barrel 10 under the condition that the imaging performance of the optical imaging lens as a whole is not affected. By limiting the radial clearance C within the range of 0mm to 0.01mm, on one hand, the risk that the limiting structure 30 presses the lens 40 in the subsequent baking process due to no clearance can be avoided, so that the lens 40 is deformed or damaged due to compression, the structural integrity of the lens 40 is favorably ensured, and the optical imaging lens can normally operate; on the other hand, the gap can be prevented from being too large, so that the limiting structure 30 cannot achieve the limiting effect on the lens 40, and cannot limit the movement of the lens 40 in the radial direction, thereby influencing the use effect of the limiting structure 30.

As shown in fig. 3, the radial width a of the stopper structure 30 satisfies: a is more than or equal to 0.8mm; the radial width A of the limiting structure 30 is set within the range of more than or equal to 0.8mm, so that the radial width of the limiting structure 30 is ensured to be in a proper size, the integral strength of the limiting structure 30 is increased, the situation that the limiting structure 30 is deformed or damaged in the subsequent baking or using process can be prevented, and the structural stability and the use reliability of the limiting structure 30 are ensured. The axial height B of the limiting structure 30 is greater than or equal to one half of the edge thickness of the lens 40 close to the second barrel 20 in the first barrel 10, that is, the axial height B of the limiting structure 30 is greater than or equal to one half of the edge thickness of the lens 40 glued with the second barrel 20, so that the axial height B of the limiting structure 30 is not too small, the limiting effect is not affected, a large part of the lens 40 can be accommodated in the accommodating area, and the assembling stability and displacement controllability of the lens 40 are ensured; the axial height B of the limiting structure 30 can be prevented from being too high and even higher than the condition that the edge thickness of the lens 40 interferes with the first lens barrel 10, and the stable matching of the limiting structure 30, the lens 40 and the first lens barrel 10 is ensured.

As shown in fig. 4, since the gap between the limiting structure 30 and the lens 40 in the first barrel 10 close to the second barrel 20 is small, which may affect subsequent glue exposure, in order to avoid this problem, a part of the limiting structure 30 is grooved to form an exposure groove 50, that is, the exposure groove 50 is disposed on the limiting structure 30, as shown in the figure, the exposure groove 50 extends along the radial direction and extends to the edge position of the limiting structure 30 close to the optical axis 70, so that the exposure groove 50 is communicated with the inner space of the second barrel 20, thereby ensuring that exposure light can fully expose and cure the glue between the lens 40 and the second barrel 20 through the exposure groove 50 in the subsequent exposure process, thereby accelerating exposure and curing of the glue, and realizing the glue joint work between the lens 40 and the second barrel 20.

As shown in fig. 4, the exposure groove 50 includes a plurality of exposure grooves 50, and the plurality of exposure grooves 50 are arranged at intervals around the circumferential direction of the limiting structure 30. The number more than or equal to 4 of exposure groove 50 through increasing the number in exposure groove 50, increases the glue exposure area, can guarantee follow-up abundant to the glue exposure solidification, can accelerate glue curing time greatly simultaneously, improves machining efficiency, can guarantee the intensity and the stability that lens 40 and second lens cone 20 splice simultaneously.

As shown in fig. 5, the circumferential length E of the exposure groove 50 on the limiting structure 30 satisfies: e is larger than or equal to 1.6mm and larger than or equal to 0.8mm, and the circumferential length E of the exposure groove 50 on the limiting structure 30 is limited within the range of 0.8mm to 1.6mm, so that the problem that the overall strength of the limiting structure 30 is influenced by overlarge E can be avoided, and the structural stability and the using effect of the limiting structure 30 can be guaranteed; on the other hand, the problem that the exposure effect of the exposure groove 50 is affected by too small E can be avoided, and the exposure light can accurately reach the gluing position of the lens 40 and the second lens cone 20 through the exposure groove 50, so that the glue is exposed and cured, and the exposure efficiency is improved. The radial width D of the exposure groove 50 and the radial width A of the limiting structure 30 satisfy the following conditions: 2/3A is more than or equal to D and more than or equal to 1/3A. Set up like this and to guarantee that the radial width D of exposing to the sun groove 50 is less than limit structure 30's radial width A all the time, is favorable to guaranteeing exposing to the sun groove 50's structural dimension rationality, better increase exposure effect.

As shown in fig. 6, the draft angle F is increased at the edge position of the exposure groove 50, and the draft angle F of the exposure groove 50 satisfies: f is more than or equal to 30 degrees. By setting the drawing angle, the forming and the demoulding of the exposure groove 50 are facilitated, and the processing convenience is improved.

As shown in fig. 7, a schematic structural diagram of a second barrel 20 of an optical imaging lens according to another alternative embodiment of the present application, specifically, the difference is that a structural form of a limiting structure 30 is different, in this embodiment, the limiting structure 30 is not annular, and as shown in the drawing, the limiting structure 30 includes a plurality of limiting structures 30, the plurality of limiting structures 30 are disposed at intervals around a circumferential direction of an object-side end surface of the second barrel 20, and a surface of the limiting structure 30 facing an optical axis 70 is disposed to be attached to an outer peripheral edge of the lens 40. When the second lens barrel 20 has a large margin of the top width, the limiting structures 30 can be arranged in the manner of this embodiment, the number of the limiting structures 30 is greater than or equal to 6, the specific number can be selected according to the situation, and the limiting effect of the limiting structures 30 is required to be ensured. The limiting structure 30 may be designed in any shape, and the projection of the limiting structure 30 on the object-side end surface of the second barrel 20 includes one of a circle and a polygon, and the polygon includes one of a triangle and a square. In this embodiment, the height of the limiting structure 30 is greater than or equal to half of the thickness of the edge of the lens 40 cemented with the second barrel 20, and this structure increases the exposure area of the glue while satisfying the limitation, accelerates the curing time of the glue, and improves the processing efficiency.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An optical imaging lens, comprising:

a first barrel (10);

a second barrel (20), wherein the second barrel (20) is abutted against the first barrel (10), and an optical axis (70) of the second barrel (20) is overlapped with the optical axis (70) of the first barrel (10);

a plurality of lenses (40), wherein the plurality of lenses (40) are arranged in two lens barrels along the optical axis (70), and at least one lens (40) is arranged in the first lens barrel (10);

the lens (40) in the first lens barrel (10) close to the second lens barrel (20) is glued to the object-side end face of the second lens barrel (20), and the object-side end face of the second lens barrel (20) is provided with a limiting structure (30) so as to limit the lens (40) in the first lens barrel (10) close to the second lens barrel (20).

2. The optical imaging lens according to claim 1, wherein the position-limiting structure (30) is continuously disposed around a circumference of the object-side end surface of the second lens barrel (20), the position-limiting structure (30) is located at an outer circumference of the object-side end surface of the second lens barrel (20), a surface of the position-limiting structure (30) facing the optical axis (70) encloses a receiving area, and at least a portion of the lens (40) of the first lens barrel (10) close to the second lens barrel (20) is received in the receiving area.

3. The optical imaging lens according to claim 1, further comprising an exposure groove (50), wherein the exposure groove (50) is disposed on the limiting structure (30), and the exposure groove (50) is communicated with an inner space of the second barrel (20).

4. The optical imaging lens according to claim 3, characterized in that the exposure groove (50) comprises a plurality of exposure grooves (50) arranged at intervals around the circumference of the limiting structure (30).

5. Optical imaging lens according to claim 1, characterized in that the radial clearance C between the limiting structure (30) and the lens (40) of the first barrel (10) close to the second barrel (20) is such that: c is more than or equal to 0.01mm and more than or equal to 0mm.

6. The optical imaging lens according to claim 1,

the radial width A of the limiting structure (30) meets the following requirements: a is more than or equal to 0.8mm; and/or

The axial height B of the limiting structure (30) is more than or equal to one half of the thickness of the edge of the lens (40) close to the second lens barrel (20) in the first lens barrel (10).

7. Optical imaging lens according to claim 3,

the circumferential length E of the exposure groove (50) on the limiting structure (30) meets the following requirements: e is more than or equal to 1.6mm and more than or equal to 0.8mm; and/or

The radial width D of the exposure groove (50) and the radial width A of the limiting structure (30) meet the following conditions: 2/3A is more than or equal to D and more than or equal to 1/3A.

8. Optical imaging lens according to claim 3, characterized in that the draft angle F of the exposure groove (50) satisfies: f is more than or equal to 30 degrees.

9. The optical imaging lens according to claim 1, wherein the limiting structure (30) comprises a plurality of limiting structures (30), the plurality of limiting structures (30) are arranged around the circumferential direction of the object-side end surface of the second lens barrel (20) at intervals, and the surface of the limiting structure (30) facing the optical axis (70) is attached to the outer periphery of the lens (40).

10. The optical imaging lens according to claim 9, characterized in that the projection of the limiting structure (30) on the object-side end surface of the second barrel (20) comprises one of a circle and a polygon.

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