CN217521420U - Lens barrel and optical imaging lens - Google Patents

Abstract

The utility model provides a lens cone and optical imaging lens. The lens cone comprises an object side end, an image side end, an outer ring surface, an inner ring surface and a plurality of forming gate marks, wherein the outer ring surface is provided with at least one outer tangent plane, the inner ring surface is provided with an inner tangent plane corresponding to the outer tangent plane, the area of a cylinder opening of the object side end is larger than that of a cylinder opening of the image side end, and the forming gate marks are arranged in at least one of the object side end, the image side end and the outer ring surface. The utility model provides an among the prior art periscope long-focus lens section of thick bamboo have the problem that miniaturization, formability and structural strength height can't compromise.

Description

Lens barrel and optical imaging lens

Technical Field

The utility model relates to an optical imaging equipment technical field particularly, relates to a lens cone and optical imaging lens.

Background

At present, electronic mobile communication devices such as mobile phones, flat panels, notebook computers and the like are widely popularized and developed towards light and thin, and meanwhile, the pixel requirements of consumers are higher and higher, and the conventional lens cannot meet the requirements of ultrahigh pixels and light and thin. Therefore, the noncircular edge-cut periscopic telephoto lens is developed along with the noncircular edge-cut periscopic telephoto lens, when the lens is in a special-shaped edge-cut shape, the manufacturing process of the lens has different requirements on the forming mode and precision of the conventional circular lens barrel, and particularly, the problem of low strength caused by insufficient filling is serious because the thickness of the lens barrel in the edge-cut direction is designed to be thin.

That is, the periscopic telephoto lens barrel in the prior art has the problems that the size is small, and the formability and the structural strength are high, and cannot be compatible.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a lens barrel and an optical imaging lens, which can solve the problem of the prior art that the periscopic long-focus lens barrel has the high miniaturization, the high formability and the high structural strength and can not be taken into account.

In order to achieve the above object, according to an aspect of the present invention, there is provided a lens barrel including an object side end, a picture side end, a connection object side end, an outer annular surface and an inner annular surface, and a plurality of molding gate marks, the outer annular surface having at least one outer side tangential surface, the inner annular surface having an inner side tangential surface corresponding to the outer side tangential surface, an area of a nozzle of the object side end being larger than an area of the nozzle of the picture side end, the molding gate marks being provided in at least one of the object side end, the picture side end and the outer annular surface.

Further, the maximum diameter of the opening of the object side end

Maximum diameter of the opening of the drum at the side end

The diameter satisfies:

further, the maximum diameter of the barrel mouth at the object side end

And the length L of the lens barrel satisfies the following conditions:

further, the minimum distance H between the outer tangent plane and the optical axis of the lens barrel and the maximum outer diameter Dmax of the lens barrel satisfy the following conditions: 0.40 < 2 × H/Dmax < 0.95.

Furthermore, the cylinder wall of the lens barrel is provided with a notch, the notch is positioned at the outer tangent plane, and the notch is communicated with the end surface of the object side end.

Furthermore, the tangent plane of the outer side is a plane or a cambered surface; and/or the inner tangent plane is a plane or a cambered surface.

Further, a plurality of molding gate marks are located on the same circumference, and the plurality of molding gate marks are arranged at intervals around the circumference of the lens barrel.

Further, the area of the molding gate mark is more than or equal to 0.1mm ² And is less than or equal to 1mm ² 。

Further, the shape of the molding gate mark is one of a rectangle, a circle, and an ellipse.

Further, the lens barrel is injection molded and the material of the lens barrel is black plastic.

According to the utility model discloses an on the other hand provides an optical imaging lens, include: the lens group is arranged in the lens barrel and provided with a plurality of lenses, at least one of the lenses is a trimming lens, and the trimming lens is provided with a trimming edge matched with the inner side tangent plane.

Further, a maximum effective diameter DTF of a lens close to an object side end of the lens barrel in the lens group and a maximum effective diameter DTL of a lens close to an image side end of the lens barrel in the lens group satisfy: 1.05< DTF/DTL <3.

Further, the effective focal length f of the optical imaging lens and the length L of the lens barrel satisfy the following condition: 0.9< f/L < 3.2.

Further, the maximum diameter Q1 of the edge cutting lens and the minimum diameter Q2 of the edge cutting lens satisfy the following conditions: 0.5< Q2/Q1< 1.

Further, the minimum distance H between the outer tangent plane of the lens barrel and the optical axis of the lens barrel and the minimum diameter Q2 of the edge cutting lens satisfy that: 0.5< Q2/2H ≦ 1.

Use the technical scheme of the utility model, the lens cone includes the object side, like the side, the connector side with like the outer anchor ring and the interior anchor ring and a plurality of shaping runner marks of side, the outer anchor ring has at least one outside tangent plane, the interior anchor ring has the inboard tangent plane that corresponds with the outside tangent plane, the area of the nozzle of object side is greater than the area like the nozzle of side, shaping runner mark sets up at the object side, like in at least one of side and outer anchor ring.

The area of the cylinder opening of the object side end is larger than that of the cylinder opening of the image side end, so that the structural strength of the lens barrel can be ensured while the lens barrel is miniaturized, and the lens barrel has the advantages of being miniaturized and high in structural strength. The outer tangent plane is arranged on the outer ring surface, so that the lens barrel is beneficial to miniaturization. The forming gate marks are convenient for injection molding of the lens barrel, and the plurality of forming gate marks indicate that feeding can be carried out at a plurality of positions in the injection molding process of the lens barrel, so that the manufacturing speed and the yield of the lens barrel are greatly increased.

Drawings

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

fig. 1 is a cross-sectional view of an optical imaging lens according to a first embodiment of the present invention;

fig. 2 shows an angled view of the lens barrel of fig. 1;

fig. 3 is a schematic view showing an overall structure of the lens barrel of fig. 1;

FIG. 4 shows a cross-sectional view at an angle at the outer-side cut-away position of the optical imaging lens of FIG. 1;

FIG. 5 is a schematic diagram of the edge-cut lens of FIG. 1;

fig. 6 is a cross-sectional view showing an angle of an optical imaging lens according to a second embodiment of the present invention;

FIG. 7 shows a cross-sectional view at an angle at the outer-side cut-away position of the optical imaging lens of FIG. 6;

fig. 8 is a schematic view showing the entire structure of the lens barrel of fig. 6;

fig. 9 shows an angled view of the lens barrel of fig. 8;

FIG. 10 is a schematic view of the edge-cut lens of FIG. 6;

fig. 11 is a cross-sectional view of an optical imaging lens according to a third embodiment of the present invention;

fig. 12 shows an angled view of the lens barrel of fig. 11;

fig. 13 is a schematic view showing the entire structure of the lens barrel of fig. 11;

FIG. 14 is a cross-sectional view showing an angle at the outer tangent position of the optical imaging lens of FIG. 11;

FIG. 15 shows a schematic view of the cut edge lens of FIG. 11;

fig. 16 is a cross-sectional view of an optical imaging lens according to a fourth embodiment of the present invention;

fig. 17 shows an angled view of the lens barrel of fig. 16;

fig. 18 is a schematic view showing the entire structure of the lens barrel in fig. 16;

FIG. 19 is a cross-sectional view showing an angle at the outer tangent position of the optical imaging lens of FIG. 16;

FIG. 20 is a schematic view of the edge-cut lens of FIG. 16;

fig. 21 is a cross-sectional view showing an angle of an optical imaging lens according to a fifth embodiment of the present invention;

fig. 22 shows an angled view of the lens barrel of fig. 21;

fig. 23 is a schematic view showing the entire structure of the lens barrel in fig. 21;

FIG. 24 is a cross-sectional view showing an angle at the outer tangent position of the optical imaging lens of FIG. 21;

fig. 25 shows a schematic view of the structure of the edged lens of fig. 21.

Wherein the figures include the following reference numerals:

10. an object-side end; 20. an image side end; 30. an outer annular surface; 31. cutting into an outer side section; 40. an inner ring surface; 41. cutting the inner side; 50. forming a gate mark; 60. a notch; 70. a boss portion; 80. trimming the lens; 81. trimming; 90. a lens barrel; 100. a lug portion.

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.

In order to solve the problem that there is miniaturization, formability and the high unable compromise of structural strength in the long burnt lens cone of periscope among the prior art, the utility model provides a lens cone and optical imaging lens.

As shown in fig. 1 to 25, the lens barrel includes an object side end 10, an image side end 20, an outer ring surface 30 and an inner ring surface 40 connecting the object side end 10 and the image side end 20, and a plurality of molding gate marks 50, wherein the outer ring surface 30 has at least one outer tangent surface 31, the inner ring surface 40 has an inner tangent surface 41 corresponding to the outer tangent surface 31, an area of a cylinder opening of the object side end 10 is larger than an area of a cylinder opening of the image side end 20, and the molding gate marks 50 are disposed in at least one of the object side end 10, the image side end 20 and the outer ring surface 30.

By making the area of the cylinder opening of the object side end 10 larger than the area of the cylinder opening of the image side end 20, the structural strength of the lens barrel 90 can be ensured while the miniaturization of the lens barrel 90 is facilitated, so that the lens barrel 90 has the advantages of miniaturization and high structural strength at the same time. By providing the outer facet 31 on the outer circumferential surface 30, the lens barrel 90 can be miniaturized. The formation of the gate mark 50 facilitates the injection molding of the lens barrel 90, and the plurality of gate marks 50 can be fed at a plurality of positions during the injection molding of the lens barrel 90, thereby greatly increasing the manufacturing rate and the yield of the lens barrel 90.

In the present application, the lens barrel 90 is manufactured by injection molding, and the lens barrel 90 is a black plastic body that is integrally molded. The lens barrel 90 is provided as a black plastic body to facilitate the absorption of stray light by the lens barrel 90.

As shown in fig. 1, 6, 11, 16 and 21, the maximum diameter of the nozzle of the object side 10

Maximum diameter of the opening of the image side end 20

The diameter satisfies:

if it is

Less than 1.05 makes the difference between the cylinder opening of the object side end 10 and the cylinder opening of the image side end 20 smaller, which is not favorable for controlling the wall thickness of the lens barrel 90. If it is

If the difference between the area of the cylinder opening at the object side end 10 and the area of the cylinder opening at the image side end 20 is larger than 3, the thickness of the lens barrel 90 is likely to be uneven, and the structural strength is likely to be poor. To be provided with

The restriction is in the range of 1.05 to 3, and the wall thickness that makes lens cone 90 when can guaranteeing lens cone 90 preparation is comparatively even, is favorable to lens cone 90 to compromise miniaturization and higher structural strength simultaneously, guarantees that lens cone 90 works stably. Meanwhile, the arrangement also enables the lens barrel 90 to satisfy the size of the object side 10 and the image side 20 of the telephoto lens, and the practicability is wider.

As shown in fig. 1, 6, 11, 16, and 21, the maximum diameter of the nozzle at the object side end 10

And the length L of the lens barrel satisfies the following conditions:

the arrangement limits the size of the cylinder opening of the object side end 10 and the length of the lens barrel within a reasonable ratio range, so that the cylinder opening of the object side end 10 of the lens barrel is well matched with the length of the lens barrel, the total length of the optical imaging lens with the lens barrel is limited, and the design and application of the telephoto lens are met.

As shown in fig. 1, 6, 11, 16, 21, the minimum distance H of the outer tangent plane 31 from the optical axis of the lens barrel and the maximum outer diameter Dmax of the lens barrel satisfy: 0.40 < 2 × H/Dmax < 0.95. If 2 × H/Dmax is smaller than 0.4, the difference between the distance from the outer tangent plane 31 to the optical axis and the maximum outer diameter of the lens barrel is too large, which is not favorable for the optical imaging lens to realize optical performance, and thus, the imaging cannot be performed. If 2 × H/Dmax is greater than 0.95, the difference between the distance from the outer tangent plane 31 to the optical axis and the maximum outer diameter of the lens barrel is too small, which is not favorable for the miniaturization of the lens barrel. And 2 × H/Dmax is limited to 0.4 to 0.95, which is beneficial to the miniaturization of the lens barrel 90 on the premise of ensuring the imaging performance of the optical imaging lens.

As shown in fig. 3, the barrel wall of the lens barrel has a notch 60, the notch 60 is located at the outer tangent plane 31, and the notch 60 is communicated with the end surface of the object side end 10. The notch 60 is formed in the wall of the lens barrel, so that the lens can be conveniently mounted on the trimming edges in different shapes, the lens can be flexibly assembled on the lens, and meanwhile, the assembly between the lens and the module is met.

Optionally, the outer tangent plane 31 is a plane, and the inner tangent plane 41 is a plane, which is beneficial to ensure the uniform wall thickness of the lens barrel 90 and the structural strength of the lens barrel 90.

Of course, the outer tangent surface 31 may be a curved surface, and the inner tangent surface 41 may be a curved surface.

It should be noted that whether the outside tangent plane 31 is a plane or a cambered surface does not necessarily have to be related to whether the inside tangent plane 41 is a plane or a cambered surface, and any combination can be used. The combined form is that the outer tangent plane 31 is a plane, and the inner tangent plane 41 is a plane; or the outer tangent plane 31 is a plane, and the inner tangent plane 41 is a cambered surface; or the outer tangent plane 31 is a cambered surface, and the inner tangent plane 41 is a plane; or the outside tangent plane 31 is a cambered surface, and the inside tangent plane 41 is a cambered surface.

As shown in fig. 3, a plurality of molding gate marks 50 are located on the same circumference, and the plurality of molding gate marks 50 are provided at intervals around the circumferential direction of the lens barrel. The plurality of molding gate marks 50 are arranged on the same circumferential position, so that the uniformity of casting of the lens cone 90 can be ensured, and the molding stability of the lens cone 90 can be effectively ensured.

Of course, the molding gate mark 50 may be symmetrically distributed on at least one of the object side end 10, the image side end 20 and the outer annular surface 30.

Specifically, the area of the molding gate mark 50 is 0.1mm or more ² And is less than or equal to 1mm ² . If the area of the molding gate mark 50 is less than 0.1mm ² The area of the molding gate is too small to facilitate feeding, resulting in a slower molding speed of the lens barrel 90. If the area of the molding gate mark 50 is larger than 1mm ² The area of the molding gate is too large, which results in a faster material flow rate and makes the lens barrel 90 less prone to molding. While limiting the area of the molding gate mark 50 to 0.1mm ² To 1mm ² In the range of (2), the casting speed of the lens barrel 90 is improved on the premise of ensuring the molding quality of the lens barrel 90.

Optionally, the shape of the molding gate mark 50 is one of a rectangle, a circle, and an ellipse. The shape of the molding gate mark 50 may be rectangular, circular, or oval, or may be triangular or rhombic.

As shown in fig. 1, the optical imaging lens includes the lens barrel 90 and the lens group, the lens group is disposed in the lens barrel 90, the lens group has a plurality of lenses, at least one of the plurality of lenses is a trimming lens 80, and the trimming lens 80 has a trimming 81 matched with the inner side cutting surface 41. The optical imaging lens with the lens barrel 90 has the advantage of miniaturization, and can be more suitable for a light and thin mobile terminal. In addition, the optical imaging lens also has the advantage of strong structural strength, so that the optical imaging lens works more stably.

As shown in fig. 1, a maximum effective diameter DTF of a lens of the lens group near the object side end 10 of the lens barrel 90 and a maximum effective diameter DTL of a lens of the lens group near the image side end 20 of the lens barrel 90 satisfy: 1.05< DTF/DTL <3. The lens close to the object side 10 of the lens barrel 90 in the lens group is matched with the cylinder opening of the object side 10 of the lens barrel 90, and the lens close to the image side 20 of the lens barrel 90 in the lens group is matched with the image side 20 of the lens barrel 90. By limiting the DTF/DTL to a reasonable range, the tube opening of the object side end 10 and the tube opening of the image side end 20 are also limited to a reasonable range.

Specifically, the effective focal length f of the optical imaging lens and the length L of the lens barrel 90 satisfy: 0.9< f/L < 3.2. The focal length of the optical imaging lens and the length of the lens barrel 90 are limited within a reasonable range, so that the long-focus characteristic of the optical imaging lens is favorably met, and the stability of the optical imaging lens is ensured.

As shown in fig. 5, the maximum diameter Q1 of the edge cut lens 80 and the minimum diameter Q2 of the edge cut lens 80 satisfy: 0.5< Q2/Q1< 1. If Q2/Q1 is less than 0.5, the distance from the edge 81 of the edge-cut lens 80 to the center of the edge-cut lens 80 is too small, so that the edge-cut lens 80 is not favorable for satisfying the imaging requirement. If Q2/Q1 is greater than 1, the lens is not edge-cut. And limit Q2/Q1 in reasonable range to satisfy the size design of edge cut lens 80, satisfy optical requirement and formability, guarantee optical imaging lens's stability.

As shown in fig. 4, the minimum distance H between the outer tangent plane 31 of the lens barrel 90 and the optical axis of the lens barrel 90 and the minimum diameter Q2 of the trimming lens 80 satisfy: 0.5< Q2/2H ≦ 1. By limiting the Q2/2H within a reasonable range, the trimming lens 80 can be stably installed in the lens barrel 90, and meanwhile, the wall thickness of the lens barrel 90 is ensured within a reasonable range, so that the structural strength of the lens barrel 90 is ensured. In addition, the stability of the optical imaging lens assembly is guaranteed under the condition that the requirements of optical performance are met.

It should be noted that when Q2/2H is equal to 1, it means that the minimum diameter Q2 of the edged lens 80 is equal to 2H, in this case, the barrel wall of the lens barrel 90 has a notch 60, and the edge 81 of the edged lens 80 extends into the notch 60, so that Q2 is equal to 2H, and at this time, the non-tangent section of the lens barrel 90 bears against the edge 80.

Lens cone 90 in this application adopts the shaping mode that the multithread way was jetted out to make, and the die cavity of the mould of jetting out is unanimous with lens cone 90, and the mould of jetting out has two at least runners that jet out, and plastic material obtains lens cone 90 in this application after the pressurize cooling through the injection of board in the runner injection mould die cavity of jetting out.

Example one

As shown in fig. 1 to fig. 5, in the present embodiment, the lens barrel 90 has three barrel sections, the outer diameters of the three barrel sections decrease from the object side to the image side, and the barrel section near the object side of the three barrel sections has a notch 60, and the barrel section near the image side has four molding gate marks 50, and the four molding gate marks 50 are spaced around the outer peripheral surface of the lens barrel 90. The lens barrel 90 has an outer section 31, and the three barrel sections have the outer section 31. The tube section near the object side of the three tube sections has an inner tangent plane 41 corresponding to the outer tangent plane 31, the inner tangent plane 41 has a notch 60, and the edge-cutting lens 80 is supported by the inner tangent plane 41. The sections of the inner ring surfaces of the middle cylinder section and the cylinder section close to the image side in the direction vertical to the optical axis are circular.

In the present embodiment, the maximum diameter of the nozzle of the object side end 10

Maximum diameter of the mouth of the tube like the lateral end 20

Satisfies the following conditions:

the minimum distance H between the outer tangent plane 31 and the optical axis of the lens barrel is 2.5mm, and the maximum outer diameter Dmax of the lens barrel meets the requirement that H/Dmax/2 is more than 0.40 and less than 0.95; the length L of the lens barrel is 8mm, and satisfies the following conditions: 0.5<Phi D/L is less than 2. The maximum effective diameter DTF of the lens group close to the object side end 10 of the lens barrel 90 is 4.7mm, and the maximum effective diameter DTL of the lens group close to the image side end 20 of the lens barrel 90 is 3.2mm, which satisfy: 1.05<DTF/DTL<3; the maximum diameter Q1 of the edge cutting lens 80 is 5.4mm, the minimum diameter Q2 of the edge cutting lens 80 is 4.9mm, and the diameter satisfies 0.5<Q1/Q2<1，0.5<Q2/2H≤1。

In the present embodiment, the lateral cut surface 31 and the medial cut surface 41 are both flat.

Example two

The difference from the first embodiment is that the specific structure of the lens barrel 90 is different.

In the present embodiment, the lens barrel 90 has only one barrel section. The barrel 90 further includes tab portions 100, the tab portions 100 being connected to the outer annular surface 30, the tab portions 100 being located in the outer annular surface 30 in the region of the outer tangential surface 31. The arrangement of the lug part 100 facilitates the connection between the lens barrel 90 and the module, and also ensures the structural strength of the lens barrel 90. In this embodiment, there are two lug parts 100, and the two lug parts 100 are symmetrically disposed on both sides of the outer tangent plane 31.

As shown in fig. 6 to 10, the object side of the outer tangent plane 31 of the lens barrel 90 is provided with a convex portion 70, and the convex portion 70 is closer to the end surface of the object side end 10 of the lens barrel 90 or is flush with the end surface of the object side end 10 relative to the first lens in the lens group. The arrangement of the convex part 70 can ensure the stability of lens assembly, so as to prevent the lens from being interfered and damaged, and effectively ensure the working stability of the optical imaging lens.

As shown in fig. 8, the outer section 31 has two outer sections 31, the two outer sections 31 are disposed symmetrically, the molding gate mark 50 is disposed at an end of the outer section 31 close to the image side, and one outer section 31 has two molding gate marks 50, and the two molding gate marks 50 are disposed at two sides of the outer section 31 close to the lug portion 100.

In the present embodiment, the nozzle of the object side 10Maximum diameter of

Maximum diameter of the mouth of the tube like the lateral end 20

Satisfies the following conditions:

the minimum distance H between the outer tangent plane 31 and the optical axis of the lens barrel is 3.1mm, and the maximum outer diameter Dmax of the lens barrel is 10.7mm, wherein H/Dmax/2 is more than 0.40 and less than 0.95; the length L of the lens barrel is 4.4mm, and satisfies the following conditions: 0.5<Phi D/L is less than 2. The maximum effective diameter DTF of the lens close to the object side 10 of the lens barrel 90 is 8.8mm, and the maximum effective diameter DTL of the lens close to the image side 20 of the lens barrel 90 is 7.3mm, which satisfy: 1.05<DTF/DTL<3; the maximum diameter Q1 of the edge cutting lens 80 is 9.5mm, the minimum diameter Q2 of the edge cutting lens 80 is 5.2mm, and the requirement of 0.5 is met<Q1/Q2<1，0.5<Q2/2H≤1。

In the present embodiment, the lateral cut surface 31 and the medial cut surface 41 are both flat.

EXAMPLE III

The difference from the first embodiment is that the specific structure of the lens barrel 90 is different.

As shown in fig. 11 to 15, the lens barrel 90 includes two barrel sections having different outer diameters to form a step at a junction of the two barrel sections, and a mounting convex ring is further provided at an image-side end of the barrel section near the image side to facilitate mounting between the lens barrel 90 and the module. Both the cylinder sections and the mounting collar have an outer cut 31, while only the cylinder section near the object side has an inner cut 41 corresponding to the outer cut. And the mounting collar has four molding gate marks 50, the four molding gate marks 50 being spaced around the outer peripheral surface of the barrel 90. The edged lens 80 bears against the inside cut surface 41. The section of the inner ring surface of the cylinder section close to the image side in the direction vertical to the optical axis is circular.

In the present embodiment, the maximum diameter of the nozzle of the object side end 10

Maximum diameter of the nozzle like the side end 20

Satisfies the following conditions:

the minimum distance H between the outer tangent plane 31 and the optical axis of the lens barrel is 2.6mm, and the maximum outer diameter Dmax of the lens barrel is 8mm, which satisfies 0.40 < H/Dmax/2 < 0.95; the length L of the lens barrel is 9.7mm, and satisfies the following conditions: 0.5<Phi D/L is less than 2. The maximum effective diameter DTF of the lens group close to the object side end 10 of the lens barrel 90 is 6.7mm, and the maximum effective diameter DTL of the lens group close to the image side end 20 of the lens barrel 90 is 4.6mm, which satisfy: 1.05<DTF/DTL<3; the maximum diameter Q1 of the edge cutting lens 80 is 7.2mm, the minimum diameter Q2 of the edge cutting lens 80 is 4.6mm, and the diameter satisfies 0.5<Q1/Q2<1，0.5<Q2/2H≤1。

In the present embodiment, the lateral cut surface 31 is a plane, and the medial cut surface 41 is a plane.

Example four

The difference from the first embodiment is that the lens barrel 90 has a different structure.

As shown in fig. 16 to 20, the lens barrel 90 has two barrel sections, the outer diameters of the two barrel sections are different, and the joint of the two barrel sections has a bearing convex edge, the bearing convex edge has four molding gate marks 50, and the four molding gate marks 50 are symmetrically arranged. The outer tangent plane 31 is located on the cylinder section near the object side, and the cylinder section with the inner tangent plane 41 at the object side corresponds to the outer tangent plane 31. And in the present embodiment, the number of the lateral cut surfaces 31 and the medial cut surfaces 41 is one. The edged lens 80 bears against the inside cut surface 41. The section of the inner ring surface of the cylinder section close to the image side in the direction vertical to the optical axis is circular.

In the present embodiment, the maximum diameter of the nozzle of the object side 10

Maximum diameter of the mouth of the tube like the lateral end 20

Satisfies the following conditions:

the minimum distance H between the outer tangent plane 31 and the optical axis of the lens barrel is 2.3mm, and the maximum outer diameter Dmax of the lens barrel meets the requirement that H/Dmax/2 is more than 0.40 and less than 0.95; the length L of the lens barrel is 3.7mm, and satisfies the following conditions: 0.5<Phi D/L is less than 2. The maximum effective diameter DTF of the lens group close to the object side end 10 of the lens barrel 90 is 4.8mm, and the maximum effective diameter DTL of the lens group close to the image side end 20 of the lens barrel 90 is 2.6mm, which satisfy: 1.05<DTF/DTL<3; the maximum diameter Q1 of the edge cutting lens 80 is 5mm, the minimum diameter Q2 of the edge cutting lens 80 is 4.5mm, and 0.5 is satisfied<Q1/Q2<1，0.5<Q2/2H≤1。

In the present embodiment, the lateral cut surface 31 is a plane, and the medial cut surface 41 is a plane.

EXAMPLE five

The difference from the third embodiment is that the shape of the outer cut surface 31 is different.

As shown in fig. 21 to 25, the lens barrel 90 includes two barrel sections having different outer diameters to form a step at a junction of the two barrel sections, and a mounting convex ring is further provided at an image side end of the barrel section near the image side to facilitate mounting between the lens barrel 90 and the module. Both the cylinder sections and the mounting collar have an outer cut 31, while only the cylinder section near the object side has an inner cut 41 corresponding to the outer cut. And the mounting collar has four molding gate marks 50, the four molding gate marks 50 being spaced around the outer peripheral surface of the barrel 90. The edged lens 80 bears against the inside cut surface 41. The section of the inner ring surface of the cylinder section close to the image side in the direction vertical to the optical axis is circular.

In the present embodiment, the maximum diameter of the nozzle of the object side 10

Maximum diameter of the mouth of the tube like the lateral end 20

Satisfies the following conditions:

the minimum distance H between the outer tangent plane 31 and the optical axis of the lens barrel is 3.2mm, and the maximum outer diameter Dmax of the lens barrel is 8mm, which satisfies 0.40 < H/Dmax/2 < 0.95; the length L of the lens barrel is 9.7mm, and satisfies the following conditions: 0.5<Phi D/L is less than 2. The maximum effective diameter DTF of the lens group close to the object side end 10 of the lens barrel 90 is 6.7mm, and the maximum effective diameter DTL of the lens group close to the image side end 20 of the lens barrel 90 is 3.7mm, which satisfy: 1.05<DTF/DTL<3; the maximum diameter Q1 of the edge cutting lens 80 is 7.2mm, the minimum diameter Q2 of the edge cutting lens 80 is 4.6mm, and the diameter satisfies 0.5<Q1/Q2<1，0.5<Q2/2H≤1。

In this embodiment, the outer tangent plane 31 is a cambered surface, and the inner tangent plane 41 is a flat surface.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to 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 drawings described above 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 (15)

1. A lens barrel comprising an object side end (10), an image side end (20), an outer annular surface (30) and an inner annular surface (40) connecting the object side end (10) and the image side end (20), and a plurality of molding gate marks (50), wherein the outer annular surface (30) has at least one outer tangent surface (31), the inner annular surface (40) has an inner tangent surface (41) corresponding to the outer tangent surface (31), the area of the barrel mouth of the object side end (10) is larger than the area of the barrel mouth of the image side end (20), and the molding gate marks (50) are disposed in at least one of the object side end (10), the image side end (20) and the outer annular surface (30).

2. Lens barrel according to claim 1, characterized in that the maximum diameter of the barrel mouth of the object side end (10) is

The maximum diameter of the opening of the image side end (20)

The diameter satisfies:

3. lens barrel according to claim 1, characterized in that the maximum diameter of the barrel mouth of the object side end (10) is

And the length L of the lens barrel satisfies the following conditions:

4. the lens barrel according to claim 1, wherein a minimum distance H of the outside tangential plane (31) from an optical axis of the lens barrel and a maximum outer diameter Dmax of the lens barrel satisfy: 0.40 < 2 × H/Dmax < 0.95.

5. The lens barrel according to claim 1, wherein a notch (60) is formed in a barrel wall of the lens barrel, the notch (60) is located at the outer tangent plane (31), and the notch (60) is communicated with an end surface of the object side end (10).

6. The lens barrel according to any one of claims 1 to 5,

the outer tangent plane (31) is a plane or a cambered surface; and/or

The inner tangent plane (41) is a plane or an arc surface.

7. The lens barrel according to any one of claims 1 to 5, wherein a plurality of the molding gate marks (50) are located on the same circumference, and a plurality of the molding gate marks (50) are provided at intervals around a circumferential direction of the lens barrel.

8. The lens barrel according to any one of claims 1 to 5, wherein an area of the molding gate mark (50) is 0.1mm or more ² And is less than or equal to 1mm ² 。

9. The lens barrel according to any one of claims 1 to 5, wherein a shape of the molding gate mark (50) is one of a rectangular shape, a circular shape, and an oval shape.

10. The lens barrel according to any one of claims 1 to 5, wherein the lens barrel is injection-molded, and a material of the lens barrel is black plastic.

11. An optical imaging lens, comprising:

the lens barrel (90) of any one of claims 1 to 10,

the lens group is arranged in the lens barrel (90), the lens group is provided with a plurality of lenses, at least one of the lenses is a trimming lens (80), and the trimming lens (80) is provided with a trimming edge (81) matched with the inner side tangent plane (41) of the lens barrel (90).

12. The optical imaging lens according to claim 11, wherein a maximum effective diameter DTF of a lens of the lens groups near an object side end (10) of the lens barrel (90) and a maximum effective diameter DTL of a lens of the lens groups near an image side end (20) of the lens barrel (90) satisfy: 1.05< DTF/DTL <3.

13. Optical imaging lens according to claim 11, characterized in that between the effective focal length f of the optical imaging lens and the length L of the lens barrel (90) there is satisfied: 0.9< f/L < 3.2.

14. Optical imaging lens according to claim 11, characterized in that the maximum diameter Q1 of the edged lens (80) and the minimum diameter Q2 of the edged lens (80) satisfy: 0.5< Q2/Q1< 1.

15. The optical imaging lens according to claim 11, characterized in that the minimum distance H of the outside tangent plane (31) of the lens barrel (90) from the optical axis of the lens barrel (90) and the minimum diameter Q2 of the edged lens (80) are such that: 0.5< Q2/2H ≤ 1.

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