CN218888633U - Filter assembly and camera module - Google Patents

Abstract

The application belongs to the technical field of make a video recording, concretely relates to filtering component and module of making a video recording, this filtering component includes: the support is provided with a mounting hole and comprises an annular supporting part which is arranged in the mounting hole and connected with the support, and the annular supporting part is provided with a through hole; the memory alloy layer is arranged on the top surface of the annular supporting part; and the optical filter is arranged on the memory alloy layer on the top surface of the annular support part. When the optical filter assembly is used for a reliability experiment and the camera module with the optical filter assembly is vacuumized, most of stress generated on the optical filter can be transmitted to the memory alloy layer on the top surface of the annular supporting part, the memory alloy layer is deformed adaptively under the action of the stress, and the memory alloy layer is released immediately after the reliability experiment is finished or the module is taken out of the vacuum bag from the camera module, so that the optical filter is protected, and the fragmentation effect of the optical filter is reduced.

Description

Filter assembly and camera module

Technical Field

The application belongs to the technical field of make a video recording, concretely relates to filtering component and module of making a video recording.

Background

With the continuous development of science and technology, various electronic products equipped with camera modules emerge endlessly, which brings great convenience to the life of people. In particular, portable intelligent terminals such as mobile phones, tablet computers, and personal digital assistants are becoming an indispensable part of people's daily life. With the increasing requirements of the public on photographing, a camera module with high pixel and large chip size is the mainstream.

For a camera module with high pixel and large chip size, the size of the optical filter (IR-CUT) of the camera module is usually large, and when reliability experiments and module package vacuumizing are performed on the camera module of this type, the optical filter is easily subjected to stress cracking under the influence of external factors (stress, humidity, temperature field change and the like), so that the IR cracking risk of the camera module with high pixel and large chip size is reduced, and the IR cracking risk becomes a factor which needs to be considered by camera module manufacturers.

Disclosure of Invention

In order to solve the above technical problem, the present application provides a filter assembly and a camera module, so as to improve the fragmentation of the filter.

The technical scheme of the application is as follows:

in one aspect, the present application provides a filter assembly comprising:

the support is provided with a mounting hole and comprises an annular supporting part which is arranged in the mounting hole and connected with the support, and the annular supporting part is provided with a through hole;

the memory alloy layer is arranged on the top surface of the annular supporting part;

and the optical filter is arranged on the memory alloy layer on the top surface of the annular supporting part.

The utility model provides a filter assembly, because this filter assembly's support includes annular support portion, the memory alloy layer sets up the top surface of annular support portion, the light filter sets up the memory alloy layer at annular support portion top surface, when filter assembly is doing the reliability experiment and has this filter assembly's the condition of making a video recording module evacuation, most stress that produces on the light filter can transmit on the memory alloy layer of annular support portion's top surface, the memory alloy layer can do adaptive deformation under the effect of stress, take out from the vacuum bag along with reliability test end or module from making a video recording the module, stress releases immediately, memory alloy layer resumes deformation, thereby reach the protection filter, reduce the cracked effect of light filter.

In some embodiments, the support and the annular support portion form an integral structure through a mold injection molding process, and the memory alloy layer is a memory alloy layer made of a shape memory alloy.

In some embodiments, the annular supporting portion is an annular protrusion formed by extending the inner wall of the support outward, so as to bear and support the memory alloy layer and the optical filter.

In some embodiments, the filter gap is disposed on the memory alloy layer on the top surface of the annular support portion, that is, there is a gap between the edge of the filter and the inner wall of the support to accommodate the adhesive between the filter and the memory alloy layer.

In some embodiments, more than one accommodating groove is arranged on the support, the accommodating grooves are arranged at four corners of the annular supporting part, and the bottom surface of each accommodating groove is flush with or lower than the top surface of the annular supporting part.

In some embodiments, a plurality of anti-collision blocks are arranged on the surface of the support, and the anti-collision blocks are arranged close to the edge position of the annular supporting part of the support at intervals.

In another aspect, the present application also provides a filter assembly, including:

the support is provided with a mounting hole and comprises an annular supporting part which is arranged in the mounting hole and connected with the support, and the annular supporting part is provided with a through hole;

wherein the annular support portion is made of a memory alloy;

and the optical filter is arranged on the annular supporting part of the support.

Another filtering component that this application provided, because this filtering component's support includes annular supporting part, annular supporting part is made by memory alloy, the light filter setting is on annular supporting part, wherein, because annular supporting part is made for memory alloy, when filtering component is doing the reliability experiment and has this filtering component's the condition of making a video recording module evacuation, most stress that produces on the light filter can transmit on the annular supporting part, annular supporting part can do adaptive deformation under the effect of stress, take out from the vacuum bag along with reliability test completion or module from making a video recording the module, stress releases immediately, annular supporting part resumes deformation, thereby reach the protection light filter, reduce the cracked effect of light filter.

In some embodiments, the annular support part made of the memory alloy and the support are formed into a whole structure by means of mold insert molding.

In addition, this application still provides a module of making a video recording, its special character lies in, the module of making a video recording includes above-mentioned filtering component.

The application provides a module of making a video recording uses above-mentioned filtering component to guarantee when the test condition of doing reliability experiment and evacuation, most stress can carry out stress release through the memory alloy layer of the annular supporting part or the annular supporting part top surface of being made by shape memory alloy in the filtering component, thereby guarantee product quality.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

In the drawings:

FIG. 1 is a schematic diagram of a filter assembly according to an embodiment of the present disclosure;

FIG. 2 is an exploded view of a memory alloy layer disposed on a top surface of an annular support portion in a filter assembly according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of an annular support and a support in an embodiment of the present application;

FIG. 4 is a schematic view of the memory alloy layer on the top surface of the annular support portion in FIG. 2;

fig. 5 is a schematic structural diagram of the optical filter in fig. 1.

Reference numerals:

the anti-collision device comprises a support seat-100, a mounting hole-101, an anti-collision block-102 and a containing groove-103;

an annular supporting part-200, a first light through hole-201, a memory alloy layer-202 and a second light through hole-203;

filter-300.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative position relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

The following disclosure provides many different embodiments, or examples, for implementing different features of the application. To simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

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 first embodiment is as follows:

fig. 1 is a schematic structural diagram of a filter assembly according to an embodiment of the present application, and fig. 2 is an exploded schematic diagram of a memory alloy layer disposed on a top surface of an annular support portion in the filter assembly according to the embodiment of the present application, and with reference to fig. 1 and fig. 2, the filter assembly according to the embodiment of the present application includes a support 100, an annular support portion 200, and a filter 300. The support 100 of the embodiment of the present application is provided with a mounting hole 101, the support 100 includes an annular support portion 200 disposed in the mounting hole 101 and connected to the support 100, and the annular support portion 200 is provided with a through hole. The top surface of the annular support portion 200 is provided with a memory alloy layer 202, and the memory alloy layer 202 is arranged on the support 100; the optical filter 300 is disposed on the memory alloy layer 202 on the top surface of the annular supporting portion 200, and the optical filter 300 is disposed on the support 100. When the filter assembly is subjected to a reliability test and the camera module having the filter assembly is vacuumized, an interactive internal force, i.e., stress, is generated inside the filter 300, and most of the stress generated on the filter 300 is transmitted to the memory alloy layer 202 on the top surface of the annular support portion 200, the memory alloy layer 202 can be deformed adaptively under the action of the stress, and the stress is released immediately as the reliability test is finished or the module is taken out of the vacuum bag from the camera module, so that the memory alloy layer 202 is deformed again, thereby protecting the filter 300 and reducing the fracture of the filter 300.

The through hole provided in the annular support portion 200 is a first light through hole 201, and since the memory alloy layer 202 is provided on the top surface of the annular support portion 200, the memory alloy layer 202 is also provided with a through hole which is a second light through hole 203, and the second light through hole 203 is communicated with the first light through hole 201, so that the light path transmitted through the optical filter assembly can smoothly enter, specifically, when the optical filter 300 is provided on the memory alloy layer 202, the light path of the optical filter assembly can smoothly transmit through the optical filter 300, the second light through hole 203 and the first light through hole 201 in sequence.

The support 100 and the annular support portion 200 of the embodiment of the present application form an integral structure through a mold injection molding process, the memory alloy layer 201 is a memory alloy layer made of a shape memory alloy, the shape memory alloy (SMA for short) used in the memory alloy layer 202 is a material made of two or more metal elements that has a Shape Memory Effect (SME) through thermoelasticity, martensite phase transition and inversion thereof, another important property of the shape memory alloy is pseudoelasticity, which is also called superelasticity, which means that under an external force, the shape memory alloy has a deformation recovery capability much larger than that of a common metal, that is, a large strain force generated in a loading process can be recovered along with unloading, and can be deformed and recover a shape before deformation under the external force. Therefore, when the memory alloy layer 202 made of the shape memory alloy is applied to the optical filter assembly, the memory alloy layer 202 can be deformed adaptively when the optical filter 300 generates stress under the influence of external factors (stress, humidity, temperature field change, etc.), and when the stress disappears, the memory alloy layer 202 recovers the deformation, so as to protect the optical filter 300 and reduce the fracture of the optical filter 300.

In the embodiment of the present invention, the annular supporting portion 200 is an annular protrusion formed by extending the inner wall of the support 100 outward to bear and support the memory alloy layer 202 and the optical filter 300, and since the support 100 and the annular supporting portion 200 are an integral structure, it increases the structural strength of the entire support 100, so that the support 100 can support and fix the optical filter 300.

In addition, the memory alloy layer 202 of the embodiment of the present application is disposed on the top surface of the annular support portion 200, and may also be integrally formed with the annular support portion 200, specifically, after the support 100 and the annular support portion 200 are formed into an integral structure through a mold injection molding process, the shape memory alloy layer 202 is processed, and then the memory alloy layer 202 is formed in a mold together with the integral structure formed by the support 100 and the annular support portion 200, in other embodiments, the memory alloy layer 202 may also be disposed on the top surface of the annular support portion 200 by means of glue adhesion.

In the embodiment of the present application, the thickness of the annular support portion 200 is less than that of the support 100, and preferably, the annular support portion 200 is disposed at the bottom of the support 100, that is, the bottom surface of the annular support portion 200 may be identical to the bottom surface of the support 100, so as to reserve a sufficient assembly space for accommodating the optical filter 300 and the memory alloy layer 202.

Fig. 3 is a schematic structural view of an annular support and a support in an embodiment of the present application, fig. 4 is a schematic structural view of a memory alloy layer on a top surface of the annular support in fig. 2, and fig. 5 is a schematic structural view of a filter in fig. 1. With reference to fig. 1-5, in the embodiment of the present application, the through hole formed in the annular supporting portion 200 is rectangular, accordingly, the annular supporting portion 200 and the memory alloy layer 202 are both rectangular frames, and the optical filter 300 is also rectangular accordingly. In other embodiments, if the through hole of the annular support portion 200 is circular or other shapes, the annular support portion 200, the memory alloy layer 202 and the optical filter are also circular or other shapes.

As a preferred solution of the embodiment of the present application, the optical filter 300 is adhered to the memory alloy layer 202 on the top surface of the annular supporting portion 200 by an adhesive such as glue, so as to ensure that the optical filter 300 can eliminate stress through the memory alloy layer 202. Referring to fig. 2, in the embodiment of the present application, the optical filter 300 is disposed on the memory alloy layer 202 on the top surface of the support 200 of the support 100 in a gap manner, that is, a gap exists between the edge of the optical filter 300 and the inner wall of the support 100 to accommodate the adhesive between the optical filter 300 and the memory alloy layer 202.

In practical implementation, there is a possibility that an adhesive such as glue may overflow from the gap between the optical filter 300 and the memory alloy layer 202 to the bottom or above the optical filter 300, specifically, the adhesive such as glue may flow and overflow from the bottom edge of the optical filter 300 to the inner wall of the support 100, or the adhesive such as glue may flow and overflow from above the optical filter 300 to the upper surface of the support 100, thereby affecting the light transmission of the optical filter assembly. In order to avoid the occurrence of flowing overflow of adhesives such as glue, in the embodiment of the present application, the support 100 is provided with more than one accommodating groove 103, the accommodating grooves 103 are disposed at four corners of the annular support portion 200, the bottom surface of the accommodating groove 103 is flush with the top surface of the annular support portion 200 or lower than the top surface of the annular support portion 200, the accommodating groove 103 is used for accommodating the adhesive used for adhering the optical filter 300, and further preventing the adhesive from overflowing into the optical filter 300 or the upper surface of the support 100, thereby affecting the light transmission of the optical filter, causing the image shooting defects of the subsequent camera module applying the optical filter, and in addition, the accommodating groove 103 is also convenient for taking and placing the optical filter 300, so as to improve the assembly efficiency.

In the embodiment of the present application, since the accommodating grooves 103 are disposed at four corners of the annular supporting portion 200 and located on the supporting seat 100, the adhesive such as glue can uniformly overflow to the outside of the optical filter 300.

Preferably, in conjunction with fig. 1, 2 and 3, the accommodating groove 103 of the embodiment of the present application may be arc-shaped, preferably semicircular, to moderate the flow rate of the overflowing glue. In other embodiments, the receiving groove 103 may also be square, and the like, and is not limited herein.

With reference to fig. 1, fig. 2 and fig. 3, a plurality of anti-collision blocks 102 may be disposed on a surface of the support 100 according to an embodiment of the present disclosure, and the plurality of anti-collision blocks 102 are spaced near an edge of the annular support portion 200 of the support 100, so that the optical filter 300 and the other components have a sufficient light transmission distance and a sufficient protection distance to prevent the other components from colliding with the optical filter 300, and ensure the quality of the optical filter 300.

Preferably, four bumper blocks 102 of the embodiment of the present application may be disposed on the surface of the support 100 in an integrated manner, and the four bumper blocks 102 may be disposed opposite to each other in pairs. Of course, the number of the crash block 102 may be other than two, three, etc., and in other embodiments, the crash block 102 may be disposed on the surface of the support 100 by adhesion, which is not limited herein.

Example two:

based on the first embodiment, the application also provides another filtering component. The difference from the first embodiment is that the annular support part 200 of the embodiment of the present application is made of shape memory alloy, the optical filter 300 is disposed on the annular support part 200 of the support 100, and the annular support part 200 made of memory alloy and the support 100 are formed into an integral structure by insert molding through a mold. Since the annular support portion 200 is made of the shape memory alloy, and the annular support portion 200 itself has a certain support strength, there is no need to form the memory alloy layer 202 on the top surface of the annular support portion 200, the optical filter 300 is directly disposed on the annular support portion 200, and the annular support portion 200 not only can support and fix the optical filter 300, but also has a function of eliminating stress.

That is, the filter assembly provided by the present application, the support 100 is provided with the mounting hole 101, the support 100 includes the annular support portion 200 that is arranged in the mounting hole 101 and is connected with the support 100, the annular support portion 200 is provided with a through hole, the optical filter 300 is arranged on the annular support portion 200 that is made of memory alloy, when the filter assembly is in a reliability test and a camera module group with the filter assembly is vacuumized, most of stress generated on the optical filter can be transmitted to the annular support portion 200, the annular support portion 200 can be deformed adaptively under the action of stress, the stress is released immediately after the reliability test is finished or the module group is taken out of a vacuum bag from the camera module group, and the cantilever beam is deformed again, thereby protecting the optical filter and reducing the effect of optical filter fragmentation.

As for other structures of the filter assembly provided in the second embodiment, reference may be made to the first embodiment, which is not described herein again. Understandably, the annular support portion 300 and the support 100 are integrally injection-molded by a mold in the first embodiment, the annular support portion 300 is not made of a shape memory alloy, the memory alloy layer 202 is disposed on the top surface of the annular support portion 200, and the optical filter 300 is stress-relieved by the memory alloy layer 202, while the annular support portion 200 is made of a shape memory alloy in the second embodiment, the annular support portion 200 and the support 100 are insert-integrally molded by a mold, and the optical filter 300 is disposed on the annular support portion 200, and stress relief is performed by the annular support portion 200 made of a shape memory alloy.

Example three:

the embodiment of the application also provides a camera module, which comprises the filter component shown in the first embodiment or the second embodiment. Specifically, the camera module provided in this embodiment of the present invention is a camera module capable of reducing the risk of breaking the optical filter 300, and the camera module includes a lens assembly, a filter assembly and a photosensitive assembly, the lens assembly includes an optical lens and its accessory structure (e.g., a motor or a lens carrier), the filter assembly includes the optical filter 300 and its accessory structure, the photosensitive assembly includes a circuit board, a photosensitive chip attached to the surface of the circuit board, and an electronic component (e.g., a resistor, a capacitor, and the like) mounted on the surface of the circuit board and located outside the photosensitive chip, where the optical filter 300 of the filter assembly is sometimes also referred to as a color filter, for example, in a camera module of an electronic device such as a mobile phone, the optical filter 300 is generally an IR filter 300, and is used for filtering an infrared band to improve the imaging quality, and the optical filter 300 is mounted at the rear end of the last lens of a lens group of the optical lens and at the front end of the photosensitive chip.

Based on the above-mentioned camera module with the filter assembly, when the filter assembly is in a reliability test and the camera module with the filter assembly is vacuumized, most of the stress generated on the filter 300 is transmitted to the memory alloy layer 202 or the annular support part 200 made of the shape memory alloy, and the stress is released immediately after the reliability test is finished or the module is taken out from the vacuum bag from the camera module, so that the effect of protecting the filter 300 and reducing the fragmentation of the filter 300 is achieved, and the fragmentation phenomenon of the filter 300 is improved.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.

Furthermore, descriptions in this application as to "first," "second," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope claimed in the present application.

In the description of the present application, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the present application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (10)

1. A light filtering assembly, comprising:

the support is provided with a mounting hole and comprises an annular supporting part which is arranged in the mounting hole and connected with the support, and the annular supporting part is provided with a through hole;

the memory alloy layer is arranged on the top surface of the annular supporting part;

the optical filter is arranged on the memory alloy layer on the top surface of the annular supporting part.

2. A light filter assembly according to claim 1, wherein the support base and the annular support portion are formed into a unitary structure by a mold injection molding process, and the memory alloy layer is a memory alloy layer made of a shape memory alloy.

3. The filter assembly of claim 1, wherein the annular support portion is an annular protrusion formed by extending an inner wall of the support outward to bear and support the memory alloy layer and the filter.

4. The filter assembly of claim 1, wherein the filter gap is disposed on the memory alloy layer on the top surface of the annular support portion, i.e. there is a gap between the edge of the filter and the inner wall of the support to accommodate the adhesive between the filter and the memory alloy layer.

5. The filter assembly of claim 1, wherein the support has more than one receiving groove, the receiving grooves are disposed at four corners of the annular support portion, and a bottom surface of the receiving groove is flush with or lower than a top surface of the annular support portion.

6. A filter assembly as claimed in claim 1, in which the carrier has a plurality of bumps provided on a surface thereof, the bumps being spaced apart adjacent an edge of the annular support portion of the carrier.

7. A light filtering assembly, comprising:

the support is provided with a mounting hole and comprises an annular supporting part which is arranged in the mounting hole and connected with the support, and the annular supporting part is provided with a through hole;

wherein the annular support portion is made of a memory alloy;

and the optical filter is arranged on the annular supporting part of the support.

8. A light filter assembly according to claim 7, wherein the annular support portion made of memory alloy and the support base are formed as a unitary structure by insert molding.

9. A filter assembly according to claim 7, wherein the filter is provided directly on the annular support of memory alloy.

10. A camera module comprising the filter assembly of any one of claims 1-9.

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