CN210090711U

CN210090711U - Lens and lens module

Info

Publication number: CN210090711U
Application number: CN201921032932.9U
Authority: CN
Inventors: 王海龙
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-06-28
Filing date: 2019-07-02
Publication date: 2020-02-18
Anticipated expiration: 2029-07-02
Also published as: WO2020258239A1

Abstract

The lens comprises an optical part with an optical axis and extended parts arranged around the optical part, wherein the optical part comprises an object side surface and an image side surface, the extended parts comprise an outer ring surface, a first extended surface and a second extended surface which are oppositely arranged, the first extended surface and the second extended surface are respectively connected with the object side surface and the image side surface, and the outer ring surface is connected with the first extended surface and the second extended surface; a plurality of gate grooves are formed in the outer annular surface, the gate grooves are evenly distributed around the optical axis, and the gate grooves are used for being respectively corresponding to the injection gates of the mold for manufacturing the lens. The utility model provides a lens has avoided can only follow single sprue injection mouth because of the structural constraint of lens itself and has injected into the feed liquid, causes the unable problem that fully fills up the mould die cavity rapidly of feed liquid, and then has guaranteed the fashioned size precision of lens, and especially the cylindricity and the smoothness of outer anchor ring have promoted yields and formation of image effect. The utility model provides a lens module has adopted above-mentioned lens.

Description

Lens and lens module

[ technical field ] A method for producing a semiconductor device

The utility model relates to the field of optical technology, especially, relate to a lens and camera lens module.

[ background of the invention ]

With the gradual maturity of optical imaging technology, various imaging products such as cameras, video cameras, telescopes and the like are also popularized to thousands of households, and the design of a lens module is always the key point of the imaging quality of the products.

More and more seven-piece or eight-piece lenses appear in the market at present, and accordingly the outer diameter of the lens needs to be enlarged continuously, but the lens with large outer diameter and high dimensional precision is difficult to form based on the structure of the current lens;

that is, the structure of current lens is difficult to be adapted to the precision needs of current lens module to the lens, especially the cylindricity and the smoothness requirement of the outer anchor ring of lens, therefore the problem of the non-stop decline of the yields of lens appears, and then brings great influence to the imaging effect of lens module.

Therefore, there is a need to provide a new lens to solve the above technical problems.

[ Utility model ] content

An object of the utility model is to provide a lens to the structure of solving present lens is difficult to adapt to the technical problem of the needs of current camera lens module to the shaping precision of lens.

The technical scheme of the utility model as follows:

the lens comprises an optical part with an optical axis and extending parts arranged around the optical part, wherein the optical part comprises an object side surface and an image side surface opposite to the object side surface, the extending parts comprise an outer ring surface and a first extending surface and a second extending surface which are arranged oppositely, the first extending surface and the second extending surface are respectively connected with the object side surface and the image side surface, and the outer ring surface is connected with the first extending surface and the second extending surface;

the lens comprises an outer annular surface and an inner annular surface, wherein the outer annular surface is provided with a plurality of gate grooves, the gate grooves surround the optical axis and are uniformly distributed, and the gate grooves are used for respectively corresponding to injection gates of a mold for manufacturing the lens.

As an improvement, four gate grooves are formed in the outer annular surface, and the distance between the outer annular surface and the optical axis ranges from 4 to 4.5 millimeters.

As an improvement, three gate grooves are formed in the outer ring surface, and the distance between the outer ring surface and the optical axis ranges from 3.5 mm to 4 mm.

As an improvement, two gate grooves are formed in the outer ring surface, and the distance between the outer ring surface and the optical axis ranges from 3 mm to 3.5 mm.

As an improvement, the distance between the outer annular surface and the optical axis is R, the number of gate grooves is N, and the following relation is satisfied:

1≤R/N≤1.75。

the utility model also provides a lens module, the lens module includes above-mentioned lens.

As an improvement, the lens module further comprises a lens barrel and a lens group, wherein the lens barrel is provided with a light through hole and an accommodating cavity communicated with the light through hole, the lens group comprises at least seven lenses, and the lenses are mutually stacked and arranged in the accommodating cavity;

at least one of the at least seven of the lenses is the optic.

The utility model provides a beneficial effect of lens lies in: through set up a plurality of runner grooves on the outer anchor ring of lens uniformly, and each runner groove is used for corresponding to the notes runner of the mould of this lens of preparation respectively, at the in-process that utilizes mould shaping lens, can be through a plurality of notes runner that correspond to the runner groove with in the feed liquid injection mould, inject material liquid into the die cavity through a plurality of notes runners from the position of difference promptly, make each corner of flow direction mould die cavity that the feed liquid can be more smooth, thereby the die cavity of mould is filled up rapidly and fully, it can only follow single notes runner injection feed liquid to have avoided because of the structural constraint of lens itself, cause the unable problem that fully fills up the die cavity rapidly of feed liquid, and then lens shaping's shaping precision has been guaranteed, especially cylindricity and the smoothness of the outer anchor ring of lens, and then improve the shaping stability of lens, the yields and the imaging effect of lens have been promoted.

The utility model provides a lens module has possessed all beneficial effects of lens because of having adopted above-mentioned lens, and the here is no longer repeated.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of a lens according to an embodiment of the present invention;

FIG. 2 is a schematic front view of the lens of FIG. 1;

FIG. 3 is a schematic top view of the lens of FIG. 1;

fig. 4 is a schematic top view of a lens according to an embodiment of the present invention;

fig. 5 is a schematic top view of a lens according to an embodiment of the present invention;

fig. 6 is a schematic cross-sectional structure diagram of a lens module according to an embodiment of the present invention.

Wherein, figure 1 is an abstract figure.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

Referring to fig. 1 to 5, the present invention discloses a lens 100 for a lens module 10, the lens 100 includes an optical portion 110 and an extended portion 120, the optical portion 110 has an optical axis OO ', and includes an object side 111 and an image side 112, the object side 111 and the image side 112 are disposed opposite to the object side 111 in an extending direction of the optical axis OO', the extended portion 120 is disposed around the optical portion 110, the extended portion 120 includes a first extended surface 121 and a second extended surface 122, the first extended surface 121 is connected to the object side 111, the first extended surface 121 extends from the object side 111 in a direction away from the optical axis OO ', the second extended surface 122 is connected to the image side 112, the second extended surface 122 extends from the image side 112 in a direction away from the optical axis OO', the extended portion 120 further includes an outer annular surface 123 connecting the first extended surface 121 and the second extended surface 122, a plurality of gate grooves 124 are formed on the outer annular surface 123, a plurality of gate grooves 124 are evenly distributed around the optical axis OO' of the optic 110, each gate groove 124 for corresponding to a respective injection gate of the mold from which the lens 100 is made.

Thus, by arranging a plurality of gate grooves 124 on the outer annular surface 123 of the lens 100 at equal intervals, and each gate groove 124 is used for respectively corresponding to the injection gate of the mold for manufacturing the lens 100, in the process of molding the lens 100 by using the mold, the material liquid can be injected into the mold through the plurality of injection gates corresponding to the gate grooves 124, i.e. the material liquid is injected into the mold cavity from different positions through the plurality of injection gates, so that the material liquid can smoothly flow to each corner of the mold cavity, thereby rapidly and fully filling the mold cavity of the mold, avoiding the problem that the material liquid cannot rapidly and fully fill the mold cavity because the material liquid can only be injected from a single injection gate due to the limitation of the number of the gate grooves 124 of the lens 100, further ensuring the dimensional accuracy of molding of the lens 100, particularly the cylindricity and smoothness of the outer annular surface 123 of the lens 100, and further improving the molding stability of the lens 100, the yield and the imaging effect of the lens 100 are further improved.

In one embodiment, referring to fig. 1 to 3, four gate grooves 124 are provided, and the distance between the outer annular surface 123 and the optical axis OO' is in a range of 4 to 4.5 mm, preferably 4.25 mm. That is, for the lens 100 with an outer diameter of 8 to 9 mm, the outer annular surface 123 is provided with four gate grooves 124, such a structure design can achieve better molding effect when the glass lens is manufactured by using a mold, and particularly, the outer annular surface 123 can achieve better cylindricity and smoothness.

In one embodiment, referring to fig. 4, three gate slots 124 are provided, and the distance between the outer annular surface 123 and the optical axis OO' is in a range of 3.5 to 4 mm, preferably 3.75 mm. That is, for the lens 100 with an outer diameter of 7 to 8 mm, the three gate grooves 124 are formed on the outer annular surface 123, and such a structure design enables better molding effect to be obtained when the glass lens is manufactured by using a mold, and particularly enables better cylindricity and smoothness of the outer annular surface 123 to be obtained.

In one embodiment, referring to fig. 5, two gate slots 124 are provided, and the distance between the outer annular surface 123 and the optical axis OO' is in a range of 3 to 3.5 mm, preferably 3.25 mm. That is, for the lens 100 with an outer diameter of 6 to 7 mm, the two gate grooves 124 are formed on the outer annular surface 123, such a structure design can achieve better molding effect when the glass lens is manufactured by using a mold, and particularly, the outer annular surface 123 can achieve better cylindricity and smoothness.

In an embodiment, referring to fig. 1 to 5, assuming that the distance between the outer annular surface 123 and the optical axis OO' is R, and the number of the gate slots 124 is N, the following relationship is satisfied:

1≤R/N≤1.75。

under the condition of satisfying the above relation, such a structure design enables to obtain a better molding effect, especially to obtain a better cylindricity and smoothness of the outer annular surface 123 when the glass lens is manufactured by using a mold.

It should be understood that the optimization scheme of the above parameters is only an optional scheme of the present embodiment, and may be appropriately adjusted according to specific needs, which is not limited herein.

Referring to fig. 1 to 6, the present invention further provides a lens module 10, wherein the lens module 10 includes the lens 100. Of course, in different embodiments of the present invention, the specific number of the lenses 100 may be increased or decreased according to actual situations, and the specific structure of each lens 100 may also be selected according to actual situations, which is not limited herein.

The utility model provides a lens module 10, because of adopted above-mentioned lens 100, and possessed all beneficial effects that above-mentioned lens 100 had, no longer repeated here.

In an embodiment, referring to fig. 6, the lens module 10 includes a lens barrel 200, a lens set 300, a press ring 400, a light shielding plate 500 and a light shielding plate 600, wherein the lens barrel 200 has a light through hole 210 and an accommodating cavity 220, the accommodating cavity 220 is communicated with the light through hole 210, the lens set 300 includes 7 lenses, the 7 lenses are stacked in the accommodating cavity 220 of the lens barrel 200, and optical axes OO' of the 7 lenses are all overlapped with the central axis of the light through hole 210, and at least one of the 7 lenses is the lens 100 of the present invention.

In addition, the press ring 400, the light shielding plate 500 and the light shielding plates 600 are all arranged in the accommodating cavity 220, wherein the press ring 400 abuts against one lens which is farthest away from the light through hole 210 along the central axis direction of the light through hole 210 so as to tightly press the lens group 300 in the accommodating cavity 220, a plurality of light shielding plates 600 are arranged, each light shielding plate 600 is arranged between two adjacent lenses and used for reducing stray light of the lens module 10, and the light shielding plate 500 is arranged between two light shielding plates 600, so that the generation of the stray light is reduced on one hand, and on the other hand, an effective supporting effect can be achieved.

The above are only embodiments of the present invention, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A lens is used for a lens module and is characterized by comprising an optical part with an optical axis and extending parts arranged around the optical part, wherein the optical part comprises an object side surface and an image side surface opposite to the object side surface, the extending parts comprise an outer ring surface and a first extending surface and a second extending surface which are arranged oppositely, the first extending surface and the second extending surface are respectively connected with the object side surface and the image side surface, and the outer ring surface is connected with the first extending surface and the second extending surface;

2. The lens according to claim 1, characterized in that: four gate grooves are formed in the outer ring surface, and the distance between the outer ring surface and the optical axis ranges from 4 mm to 4.5 mm.

3. The lens according to claim 1, characterized in that: three gate grooves are formed in the outer ring surface, and the distance between the outer ring surface and the optical axis ranges from 3.5 mm to 4 mm.

4. The lens according to claim 1, characterized in that: two gate grooves are formed in the outer ring surface, and the distance between the outer ring surface and the optical axis ranges from 3 mm to 3.5 mm.

5. The lens according to claim 1, characterized in that: the distance between the outer annular surface and the optical axis is R, the number of the gate grooves is N, and the following relational expression is satisfied:

1≤R/N≤1.75。

6. a lens module is characterized in that: the lens module comprises the lens of any one of claims 1 to 5.

7. The lens module as set forth in claim 6, wherein: the lens module further comprises a lens barrel and a lens group, the lens barrel is provided with a light through hole and an accommodating cavity communicated with the light through hole, the lens group comprises at least seven lenses, and the lenses are mutually stacked and arranged in the accommodating cavity;

at least one of the at least seven of the lenses is the optic.