CN210090823U

CN210090823U - Anti-dazzling screen and lens module

Info

Publication number: CN210090823U
Application number: CN201921031243.6U
Authority: CN
Inventors: 王海龙
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-02-18
Anticipated expiration: 2029-07-02
Also published as: WO2021000254A1

Abstract

The utility model provides a shading sheet used for a lens module, which comprises an annular first surface, an annular second surface and an inner peripheral surface; the first surface is opposite to the second surface, and the inner peripheral surface is connected with the inner edge of the first surface and the inner edge of the second surface; the inner peripheral surface has an inwardly depressed groove. The utility model provides a light-shielding sheet through set up the recess on connecting the inner peripheral surface between first surface and second surface, has avoided the inner peripheral surface in the longer back of live time, produced deckle edge exposes outside global including, and then prevents stray light's production in the camera lens module, optimizes the imaging effect of camera lens module. The utility model provides a lens module has possessed the beneficial effect of anti-dazzling screen because of having adopted above-mentioned anti-dazzling screen.

Description

Anti-dazzling screen 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 shade 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.

However, the structural design of the current anti-dazzling screen for the lens module is not reasonable enough, so that burrs can be generated on the inner peripheral surface of the anti-dazzling screen along with the time after the anti-dazzling screen is used for a long time, and the existence of the burrs can easily generate stray light, thereby bringing great influence on the imaging effect.

Therefore, there is a need to provide a new light-shielding sheet to solve the above technical problems.

[ Utility model ] content

An object of the utility model is to provide a light-shielding sheet to solve because light-shielding sheet structural design is unreasonable, lead to it to produce stray light easily, influence the technical problem of optical component formation of image effect.

The technical scheme of the utility model as follows:

provided is a light shielding sheet, comprising an annular first surface, an annular second surface and an inner circumferential surface; the first surface is arranged opposite to the second surface, and the inner circumferential surface is connected with the inner edge of the first surface and the inner edge of the second surface; the inner peripheral surface is recessed inwards to form a groove.

As an improvement, the inner circumferential surface includes a first connection end, a second connection end, and a groove body enclosing surface extending from the first connection end to the second connection end, the first connection end is connected with the inner edge of the first surface, and the second connection end is connected with the inner edge of the second surface; the projection of any point on the surrounding surface of the tank body on the first surface or the second surface is not overlapped with the inner edge of the first surface or the inner edge of the second surface.

As an improvement, the enclosing surface of the groove body is provided with a plurality of bulges.

As an improvement, the surrounding surface of the groove body is axially symmetrical along the radial direction.

As an improvement, the surrounding surface of the groove body is surrounded into a trapezoidal groove, an arc groove, a V-shaped groove or an M-shaped groove.

As an improvement, the bulges are uniformly distributed on the surrounding surface of the groove body.

As a refinement, the plurality of protrusions are serrated.

The utility model also provides a lens module, include the lens cone and accept in lens group in the lens cone, be provided with above-mentioned anti-dazzling screen between two arbitrary lenses of lens group.

The utility model provides a beneficial effect of anti-dazzling screen lies in: through set up the recess on the inner peripheral surface of connecting between first surface and second surface, avoided the inner peripheral surface after the live time is longer, produced deckle edge exposes outside inner peripheral surface, and then prevents stray light's in the lens module production, optimizes the imaging of lens module.

The utility model provides a lens module possesses the beneficial effect of anti-dazzling screen because of having adopted above-mentioned anti-dazzling screen, and the here is no longer repeated.

[ description of the drawings ]

Fig. 1 is a lens module with a first anti-dazzling screen according to the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a second shading sheet provided by the present invention;

fig. 4 is a third light-shielding sheet provided by the present invention;

fig. 5 is a fourth shading sheet provided by the present invention.

Fig. 2 is designated as an abstract drawing.

[ detailed description ] embodiments

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

Referring to fig. 1-2, the present invention provides a light-shielding sheet 1, which can be used in a lens module 100, wherein the light-shielding sheet 1 includes an annular first surface 11, an annular second surface 12, and an inner peripheral surface 13, where the annular shape can be understood as a circular ring shape, and can be set to be other types of annular structures; the first surface 11 is disposed opposite to the second surface 12, and the inner peripheral surface 13 is connected between an inner edge of the first surface 11 and an inner edge of the second surface 12; specifically, the inner peripheral surface 13 may be provided as a cylindrical surface; the inner peripheral surface 13 is recessed inwardly to form the grooves 130, and the number and cross-sectional shape of the grooves 130 are not limited.

In an embodiment, the inner circumferential surface 13 includes a first connection end 131, a second connection end 132, and a groove surrounding surface 133 extending from the first connection end 131 to the second connection end 132, the first connection end 131 is connected to the inner edge of the first surface 11, and the second connection end 132 is connected to the inner edge of the second surface 12.

As a preferred embodiment, the projection of any point on the tank body surrounding surface 133 on the first surface 11 does not coincide with the inner edge of the first surface 11, and the projection of any point on the tank body surrounding surface 133 on the second surface 12 does not coincide with the inner edge of the second surface 12; in other words, at this time, the inner peripheral surface 13 is completely recessed inward, and all regions where burrs may occur are located inside the light-shielding sheet 1, so that stray light is not generated even if burrs occur on the inner peripheral surface 13 over time. This structure maximizes the notch of the groove 130, thereby preventing the generation of stray light in the lens module 100 to the maximum. Of course, the concave groove 130 may not be formed on the entire inner circumferential surface 13, but may be formed by being depressed at a partial position of the inner circumferential surface 13, and may be provided according to actual needs.

In an embodiment, the surrounding surface 133 of the groove body is axially symmetric along the radial direction, which can be understood as the depth direction of the groove 130, that is, the longitudinal section of the surrounding surface 133 of the groove body is an axially symmetric pattern, so that the stray light can be more effectively absorbed through the structural design of axial symmetry, and in addition, the surrounding surface 133 of the groove body has a regular structure, which is convenient for processing.

In one embodiment, the trough enclosing surface 133 preferably encloses a trapezoidal groove as shown in fig. 2, but may enclose a circular arc groove or a V-shaped groove or an M-shaped groove as shown in fig. 3-5. Of course, the groove surrounded by the surrounding surface 133 of the tank body is not limited to the above shape; the surrounding surface 133 of the groove body has a regular structure, so that the batch production and the processing are convenient.

In one embodiment, the slot body surrounding surface 133 has a protrusion 140; the protruding structure can effectively refract and reflect generated stray light for multiple times between the protrusions, and finally the stray light is eliminated in the groove. Specifically, the protrusions 140 are uniformly distributed on the tank body surrounding surface 133, and it is understood that the protrusions 140 are distributed at any position of the tank body surrounding surface 133, and preferably, the protrusions 140 are uniformly distributed at any position of the tank body surrounding surface 133, so as to maximally improve the capability of the tank body surrounding surface 133 to absorb stray light.

In one embodiment, the protrusions 140 are saw-toothed, so as to facilitate the processing of the protrusions 140, and further facilitate the mass production of the light-shielding sheet 1.

In another embodiment, the light-shielding sheet 1 further includes an outer peripheral surface 14, the outer peripheral surface 14 connects the outer edge of the first surface 11 and the outer edge of the second surface 12, and the depth of the groove 130 is smaller than the distance between the inner peripheral surface 13 and the outer peripheral surface 14.

Specifically, the first surface 11 and the second surface 12 are arranged in parallel and opposite to each other; the light-shielding sheet 1 comprises an outer peripheral surface 14 connected between the first surface 11 and the second surface 12 to form the light-shielding sheet 1 by enclosing the first surface 11, the second surface 12 and the inner peripheral surface 13; preferably, the light-shielding sheet 1 enclosed by the first surface 11, the second surface 12, the outer peripheral surface 14 and the inner peripheral surface 13 has a substantially cylindrical structure with a circular cross section. The depth of the groove 130 is smaller than the distance between the inner circumferential surface 13 and the outer circumferential surface 14, and it can be understood that the groove 130 is a blind groove to facilitate the processing of the groove surrounding surface 133.

The utility model provides a 1 structure of anti-dazzling screen, inner peripheral surface indent to set up evenly distributed's protruding structure on the inner peripheral surface of indent, the deckle edge that the inner peripheral surface indent can effectively avoid producing appears outside, prevents to produce stray light. Further, even if stray light is generated in the lens module 100, the light path of the stray light can be effectively changed by arranging the protruding structures uniformly distributed on the inner circumferential surface, so that the stray light is collected into the groove 130 more and absorbed, and the imaging effect of the lens module 100 is optimized.

The present invention further provides a lens module 100, please refer to fig. 1, which includes a lens barrel 2 and a lens group 3, wherein the above-mentioned anti-dazzling screen 1 is disposed between any two lenses of the lens group 3. The utility model provides a lens module 100 has possessed the beneficial effect of anti-dazzling screen 1 because of having adopted above-mentioned anti-dazzling screen 1, and the here is no longer repeated.

It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

The terms "comprises" and "comprising," as well as any variations thereof, of the embodiments herein are intended to cover non-exclusive inclusions. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

In addition, in the description of the present invention, "a plurality" or "a plurality" means two or more unless specifically limited otherwise.

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 light-shielding sheet is characterized by comprising an annular first surface, an annular second surface and an inner circumferential surface; the first surface is arranged opposite to the second surface, and the inner circumferential surface is connected with the inner edge of the first surface and the inner edge of the second surface; the inner peripheral surface is recessed inwards to form a groove.

2. The shade according to claim 1, wherein: the inner circumferential surface comprises a first connecting end, a second connecting end and a groove body surrounding surface extending from the first connecting end to the second connecting end, the first connecting end is connected with the inner edge of the first surface, and the second connecting end is connected with the inner edge of the second surface; the projection of any point on the surrounding surface of the tank body on the first surface or the second surface is not overlapped with the inner edge of the first surface or the inner edge of the second surface.

3. The shade according to claim 2, wherein: the surrounding surface of the groove body is provided with a plurality of bulges.

4. The shade according to claim 2, wherein: the surrounding surface of the groove body is axially symmetrical along the radial direction.

5. The shade according to claim 2, wherein: the surrounding surface of the tank body is surrounded into a trapezoidal groove, an arc groove, a V-shaped groove or an M-shaped groove.

6. A shade according to claim 3, wherein: the plurality of bulges are uniformly distributed on the surrounding surface of the groove body.

7. A shade according to claim 3, wherein: the plurality of protrusions are in a sawtooth shape.

8. A lens module is characterized in that: the lens comprises a lens barrel and a lens group accommodated in the lens barrel, wherein the anti-dazzling screen of any one of claims 1 to 7 is arranged between any two lenses of the lens group.