阅读说明：本技术 一种镜头模组 (Lens module ) 是由 李林珍 卢继亮 李刚 张晋 顾春欣 于 2019-10-15 设计创作，主要内容包括：本发明提供了一种镜头模组,其特征在于:包括外壳以及收容于外壳的对焦支架、第一基座、第二基座、镜头,镜头安装于对焦支架中,从上至下对焦支架、第一基座和第二基座依次叠置,对焦支架的底侧设有三个第一导向槽,第一基座的顶侧设有三个第二导向槽,第一导向槽与第二导向槽位置一一对应,第一导向槽与第二导向槽之间设有第一滚珠,第一基座的底侧设有三个第三导向槽,第二基座的顶侧设有三个第四导向槽,第三导向槽与第四导向槽位置一一对应,第三导向槽与第四导向槽之间设有第二滚珠,通过叠设的对焦支架、第一基座和第二基座之间的相对移动可实现自动对焦和光学防抖,并通过最少数目的导向机构和最简单的结构实现稳定的镜头移动。(The invention provides a lens module which is characterized by comprising a shell, a focusing bracket, a first base, a second base and a lens, wherein the focusing bracket, the first base, the second base and the lens are accommodated in the shell, the lens is arranged in the focusing bracket, the first base and the second base are sequentially overlapped from top to bottom, three first guide grooves are arranged at the bottom side of the focusing bracket, three second guide grooves are arranged at the top side of the first base, the first guide grooves correspond to the second guide grooves in a one-to-one manner, first balls are arranged between the first guide grooves and the second guide grooves, three third guide grooves are arranged at the bottom side of the first base, three fourth guide grooves are arranged at the top side of the second base, the third guide grooves correspond to the fourth guide grooves in a one-to-one manner, second balls are arranged between the third guide grooves and the fourth guide grooves, automatic focusing and optical anti-shake can be realized through the relative movement among the overlapped focusing bracket, the first base and the second base, and stable lens movement is achieved by a minimum number of guide mechanisms and a simplest structure.)

1. A lens module is characterized by comprising a shell, a focusing support, a first base, a second base and a lens, wherein the focusing support, the first base, the second base and the lens are accommodated in the shell, the lens is arranged in the focusing support, the first base and the second base are sequentially overlapped from top to bottom, three first guide grooves are formed in the bottom side of the focusing support, three second guide grooves are formed in the top side of the first base, the first guide grooves correspond to the second guide grooves in a one-to-one mode, first balls are arranged between the first guide grooves and the second guide grooves, each corresponding first guide groove, second guide groove and first ball form a first guide mechanism, three third guide grooves are formed in the bottom side of the first base, three fourth guide grooves are formed in the top side of the second base, the third guide grooves correspond to the fourth guide grooves in a one-to-one mode, a second ball is arranged between the third guide groove and the fourth guide groove, each corresponding third guide groove, fourth guide groove and second ball form a second guide mechanism, the focusing support can move along the optical axis direction of the lens relative to the first base and the second base, and the focusing support and the first base can move along the direction perpendicular to the optical axis of the lens relative to the second base.

2. The lens module as set forth in claim 1, wherein: the focusing support and the first base are connected with a first elastic piece, the first elastic piece generates elastic deformation only in the process that the focusing support moves relative to the first base and the second base along the optical axis direction of the lens, the second elastic piece is connected between the first base and the second base, and the second elastic piece generates elastic deformation only in the process that the focusing support and the first base move relative to the second base along the direction perpendicular to the optical axis of the lens.

3. The lens module as set forth in claim 1, wherein: the first guide groove and the second guide groove extend in a direction parallel to the optical axis of the lens to guide the first ball to move in a direction parallel to the optical axis of the lens, and the third guide groove and the fourth guide groove extend in a direction perpendicular to the optical axis of the lens to guide the second ball to move in a direction perpendicular to the optical axis of the lens.

4. The lens module as set forth in claim 1, wherein: in the first guide groove and the second guide groove, a cross-sectional profile of one of the first guide grooves in a direction perpendicular to an optical axis of the lens is rectangular, or a cross-sectional profile of one of the second guide grooves in a direction perpendicular to the optical axis of the lens is rectangular, and a cross-sectional profile of the rest of the first guide groove and the rest of the second guide groove in a direction perpendicular to the optical axis of the lens is trapezoidal or triangular so as to limit the first ball from moving in a direction perpendicular to the optical axis of the lens.

5. The lens module as set forth in claim 1, wherein: in the third guide groove and the fourth guide groove, a cross-sectional profile of one third guide groove in a direction parallel to the optical axis of the lens or a cross-sectional profile of one fourth guide groove in a direction parallel to the optical axis of the lens is rectangular, and remaining cross-sectional profiles of the third guide groove and the fourth guide groove in a direction parallel to the optical axis of the lens are trapezoidal or triangular to restrict the second ball from moving in a direction parallel to the optical axis of the lens.

6. The lens module as set forth in claim 1, wherein: the two first guide mechanisms are arranged on one side of the optical axis of the lens, the other first guide mechanism is separately arranged on the other side of the optical axis of the lens, and the separately arranged first guide mechanism is positioned between the other two first guide mechanisms in the direction parallel to the optical axis; the two second guide mechanisms are arranged on one side of the optical axis of the lens, the other second guide mechanism is independently arranged on the other side of the optical axis of the lens, and the independently arranged second guide mechanism is positioned between the other two second guide mechanisms in the direction parallel to the optical axis.

7. The lens module as set forth in claim 6, wherein: the lens module comprises focusing magnetic steel and a focusing coil which are arranged in pairs and used for driving the focusing support to be opposite to the first base and the second base to move along the optical axis direction of the lens, the lens module further comprises anti-shake magnetic steel and an anti-shake coil which are arranged in pairs and used for driving the focusing support to be opposite to the first base, the second base moves along the direction perpendicular to the optical axis of the lens, the focusing magnetic steel is fixedly connected to the bottom side of the focusing support, the shell comprises a top plate and a bottom plate, and the bottom plate is a magnetic adsorption piece and is attracted with the focusing magnetic steel.

8. The lens module as set forth in claim 7, wherein: the focusing coil is arranged on the bottom plate, one of the anti-shake magnetic steel and the anti-shake coil is fixedly connected to the top side of the focusing support, and the other one is arranged on the top plate.

9. The lens module as set forth in claim 8, wherein: the number of the focusing magnetic steels is three, wherein two focusing magnetic steels are arranged on two sides of the second guide groove of the first guide mechanism which is arranged independently in the optical axis direction; the other focusing magnetic steel is arranged between the second guide grooves of the other two first guide mechanisms; the quantity of anti-shake magnet steel is two, two the anti-shake magnet steel is located respectively the both sides of the optical axis of camera lens.

10. The lens module as set forth in claim 9, wherein: the bottom side of the focusing support is provided with first containing grooves, one focusing magnetic steel is embedded in each first containing groove, the top side of the focusing support is provided with second containing grooves, and one anti-shake magnetic steel is embedded in each second containing groove.

11. The lens module as set forth in claim 2, wherein: the first elastic piece is arranged on the side surface, perpendicular to the optical axis direction of the lens, of the first base, and the second elastic piece is arranged on the side surface, parallel to the optical axis direction of the lens, of the first base.

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of optical imaging, in particular to a lens module.

[ background of the invention ]

In recent years, with the development of optical imaging technology and the rise of electronic products with imaging functions, optical lenses are widely used in various electronic products. Generally, light rays are directly emitted from an object side, pass through the lens assembly along an optical axis to reach an image side, and image an object through the lens assembly. The lens assembly generally has an auto-focusing function (autofocusing) and an Optical Image Stabilization (OIS).

[ summary of the invention ]

The present invention is directed to a lens module, which has a stable lens movement and a simple mechanical structure during auto-focusing and optical anti-shake processes.

The technical scheme of the invention is as follows:

a lens module comprises a shell, a focusing bracket, a first base, a second base and a lens, wherein the focusing bracket, the first base, the second base and the lens are accommodated in the shell, the lens is arranged in the focusing bracket, the first base and the second base are sequentially overlapped from top to bottom, three first guide grooves are arranged at the bottom side of the focusing bracket, three second guide grooves are arranged at the top side of the first base, the first guide grooves and the second guide grooves are in one-to-one correspondence, first balls are arranged between the first guide grooves and the second guide grooves, each corresponding first guide groove, second guide groove and first ball form a first guide mechanism, three third guide grooves are arranged at the bottom side of the first base, three fourth guide grooves are arranged at the top side of the second base, and the third guide grooves and the fourth guide grooves are in one-to-one correspondence, a second ball is arranged between the third guide groove and the fourth guide groove, each corresponding third guide groove, fourth guide groove and second ball form a second guide mechanism, the focusing support can move along the optical axis direction of the lens relative to the first base and the second base, and the focusing support and the first base can move along the direction perpendicular to the optical axis of the lens relative to the second base.

Specifically, a first elastic member is connected between the focusing support and the first base, the first elastic member is elastically deformed only in a process that the focusing support moves along the optical axis direction of the lens relative to the first base and the second base, a second elastic member is connected between the first base and the second base, and the second elastic member is elastically deformed only in a process that the focusing support and the first base move together relative to the second base along a direction perpendicular to the optical axis of the lens.

Specifically, the first guide groove and the second guide groove both extend in a direction parallel to the optical axis of the lens to guide the first ball to move in a direction parallel to the optical axis of the lens, and the third guide groove and the fourth guide groove both extend in a direction perpendicular to the optical axis of the lens to guide the second ball to move in a direction perpendicular to the optical axis of the lens.

Specifically, in the first guide groove and the second guide groove, a cross-sectional profile of one of the first guide grooves in a direction perpendicular to an optical axis of the lens may be rectangular, or a cross-sectional profile of one of the second guide grooves in a direction perpendicular to the optical axis of the lens may be rectangular, and a remaining cross-sectional profile of the first guide groove and the second guide groove in a direction perpendicular to the optical axis of the lens may be trapezoidal or triangular to restrict the first ball from moving in a direction perpendicular to the optical axis of the lens.

Specifically, in the third guide groove and the fourth guide groove, a cross-sectional profile of one of the third guide groove and the fourth guide groove in a direction parallel to the optical axis of the lens is rectangular, and a remaining cross-sectional profile of the third guide groove and the fourth guide groove in a direction parallel to the optical axis of the lens is trapezoidal or triangular to restrict the second ball from moving in a direction parallel to the optical axis of the lens.

Specifically, two of the first guide mechanisms are arranged on one side of the optical axis of the lens, the other first guide mechanism is separately arranged on the other side of the optical axis of the lens, and the separately arranged first guide mechanism is located between the other two first guide mechanisms in a direction parallel to the optical axis; the two second guide mechanisms are arranged on one side of the optical axis of the lens, the other second guide mechanism is independently arranged on the other side of the optical axis of the lens, and the independently arranged second guide mechanism is positioned between the other two second guide mechanisms in the direction parallel to the optical axis.

Specifically, the lens module includes the magnet steel of focusing that sets up in pairs and focuses the coil and in order to drive the support of focusing is relative first base reaches the second base removes along the optical axis direction of camera lens, the lens module still includes the anti-shake magnet steel that sets up in pairs and anti-shake coil in order to drive the support of focusing reaches first base is relative in the lump the second base removes along the direction of perpendicular to camera lens optical axis, focus the magnet steel rigid coupling in the bottom side of focusing the support, the shell includes roof and bottom plate, the bottom plate be magnetic adsorption piece and with focus the magnet steel and attract mutually.

Specifically, the focusing coil is arranged on the bottom plate, one of the anti-shake magnetic steel and the anti-shake coil is fixedly connected to the top side of the focusing support, and the other is arranged on the top plate.

Specifically, the number of the focusing magnetic steels is three, wherein two focusing magnetic steels are arranged on two sides of the second guide groove of the first guide mechanism which is arranged independently in the optical axis direction; the other focusing magnetic steel is arranged between the second guide grooves of the other two first guide mechanisms; the quantity of anti-shake magnet steel is two, two the anti-shake magnet steel is located respectively the both sides of the optical axis of camera lens. Specifically, the bottom side of focusing the support is equipped with first holding tank, every inlay in the first holding tank and establish one the magnet steel of focusing, the top side of focusing the support is equipped with the second holding tank, every inlay in the second holding tank and establish one the anti-shake magnet steel.

Specifically, the first elastic member is disposed on a side surface of the first base perpendicular to an optical axis direction of the lens, and the second elastic member is disposed on a side surface of the first base parallel to the optical axis direction of the lens.

The invention has the beneficial effects that:

the automatic focusing and the optical anti-shake can be realized through the relative movement among the stacked focusing bracket, the first base and the second base, and the stable lens movement is realized through the guide mechanism with the least number and the simplest structure; in addition, the first elastic piece and the second elastic piece are only required to deform in one direction respectively to provide restoring force in one direction, so that the requirements of the lens module on the structure and the performance of the elastic pieces are reduced.

[ description of the drawings ]

FIG. 1 is a perspective view of a lens module according to the present invention;

FIG. 2 is an internal view of a lens module according to the present invention;

FIG. 3 is an exploded view of the lens module of the present invention;

FIG. 4 is a partial view of the interior of the lens module of the present invention;

FIG. 5 is an exploded view of a portion of the interior of the lens module of the present invention;

FIG. 6 is an exploded view of a portion of the interior of the lens module of the present invention;

FIG. 7 is an exploded view of a portion of the interior of the lens module of the present invention;

FIG. 8 is an exploded view of a portion of the interior of the lens module of the present invention;

FIG. 9 is an exploded view of a portion of the interior of the lens module of the present invention;

FIG. 10 is an exploded view of a portion of the interior of the lens module of the present invention;

FIG. 11 is a partial cut-away view of the interior of the lens module of the present invention;

FIG. 12 is a perspective view of a first base;

fig. 13 is a perspective view of the second base.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

Referring to fig. 1 to 3, a lens module includes a housing, a focusing bracket 3, a first base 4, a second base 5, a lens 31, a focusing magnetic steel 33, a focusing coil 111, and a first elastic element 62. The housing comprises a top plate 2 and a bottom plate 1 spaced from the top plate 2. The focusing bracket 3, the first base 4 and the second base 5 are sequentially stacked on the bottom plate 1 from top to bottom, and the lens 31 is installed in the focusing bracket 3. The focusing magnet 33 is mounted on the focusing bracket 3, and the focusing coil 111 is mounted on the bottom plate 1 and is used for cooperating with the focusing magnet 33 to drive the focusing bracket 3 to move along the direction of the optical axis (axis a in fig. 7) of the lens 31 relative to the first base 4.

Referring to fig. 3 and 8, the first elastic members 62 are provided in a pair and are disposed on the rear side (the front side in the direction F in fig. 3) of the lens 31, that is, on the rear side surface of the first base 4 perpendicular to the optical axis direction of the lens 31. The first elastic member 62 has one end connected to the focusing bracket 3 and the other end connected to the first base 4 (see fig. 4). The first elastic member 62 is elastically deformed only during the movement of the focus frame 3 relative to the first base 4 and the second base 5 along the optical axis direction of the lens 31. When the lens 31 needs to be focused, a current is introduced into the focusing coil 111, the focusing coil 111 generates a changing magnetic field, the focusing magnetic steel 33 moves in the direction of the optical axis of the lens 31 under the action of the lorentn magnetic force to complete focusing, at the moment, the first elastic member 62 is deformed to accumulate an elastic force, after focusing is completed, the current introduced into the focusing coil 111 is cut off, the focusing magnetic steel 33 is not stressed, and the focusing magnetic steel returns to the initial position under the action of the elastic force of the first elastic member 62.

Referring to fig. 4, 7 and 8, the lens module further includes a first ball 41, and three first guide grooves 34 are disposed on the bottom side of the focusing frame 3 in a direction parallel to the optical axis. The top side of the first base 4 is provided with three second guide grooves 43 arranged in a direction parallel to the optical axis. The first guide grooves 34 correspond to the second guide grooves 43 in one-to-one position. The first balls 41 are disposed between the first guide grooves 34 and the second guide grooves 43, and each of the corresponding first guide grooves 34, second guide grooves 43, and first balls 41 constitutes a first guide mechanism. The first guide groove 34 and the second guide groove 43 each extend in a direction parallel to the optical axis of the lens 31 to guide the first ball 41 to move in the direction parallel to the optical axis of the lens 31. The friction force of sliding between the focusing bracket 3 and the first base 4 is reduced by providing the first ball 41, so that the relative movement between the focusing bracket 3 and the first base 4 is more sensitive.

Referring to fig. 2 and 3, the bottom plate 1 is a magnetic adsorbing member. Thus, the bottom plate 1 exerts a magnetic attraction force on the focusing holder 3 provided with the focusing magnet steel 33, and the first ball 41 can be pressed. Meanwhile, the bottom plate can increase the BL value, which is beneficial to increasing the driving force.

With reference to fig. 4, 7, and 8, the number of the second guide grooves 43 is three, two of the second guide grooves 43 are disposed on one side of the optical axis of the lens 31, and the other second guide groove 43 is separately disposed on the other side of the optical axis of the lens 31. The second guide grooves 43 provided separately are located between two second guide grooves 43 provided in pairs in a direction parallel to the optical axis, one first ball 41 being provided in each second guide groove 43. Through setting up the second guide way 43 that sets up alone between two second guide ways 43 that set up in pairs in the direction that is on a parallel with the optical axis, like this, three first ball 41 can form stable three point support structure to focusing support 3, moreover, only need establish three first ball 41 can be in order to form stable support to focusing support 3, has simplified the structure, has reduced the complexity of lens module.

Referring to fig. 7, 8, 11 and 12, of the first guide grooves 34 and the second guide grooves 43, a cross-sectional profile of one of the first guide grooves 34 or a cross-sectional profile of one of the second guide grooves 43 is rectangular, and in this embodiment, a cross-sectional profile of one of the second guide grooves 43 is rectangular (refer to fig. 12), and the remaining cross-sectional profiles are trapezoidal or triangular. Two opposite inclined surfaces in the triangular structure and the trapezoidal structure are attached to the first ball 41 to limit the movement of the first ball 41 along the direction perpendicular to the optical axis of the lens 31. The cross-sectional profile of one of the first guide grooves 34 or the cross-sectional profile of one of the second guide grooves 43 is rectangular, so that the requirement on the machining precision of the part is reduced.

Referring to fig. 5 and 6, the focusing magnetic steel 33 is mounted on the focusing frame 3, the focusing frame 3 has first receiving grooves 35 on both left and right sides (the direction N is the right side in fig. 3) of the lens 31, and the first receiving grooves 35 are disposed on the bottom side of the focusing frame 3. The number of the first accommodating grooves 35 is three, one focusing magnetic steel 33 is embedded in each first accommodating groove 35, and the three focusing coils 111 are arranged and correspond to the three focusing magnetic steels 33 one by one (see fig. 3). Referring to fig. 6, two focusing magnetic steels 33 are disposed on one side of the optical axis of the lens 31, another focusing magnetic steel 33 is disposed on the other side of the optical axis of the lens 31, and the individually disposed focusing magnetic steels 33 are located between the two focusing magnetic steels 33 disposed in pairs in a direction parallel to the optical axis. Preferably, the magnetic force exerted on the individually disposed focusing magnetic steel 33 is equal to the sum of the magnetic forces exerted on the two paired focusing magnetic steels 33, so that the sum of the magnetic force exerted on the individually disposed focusing magnetic steel 33 and the magnetic force exerted on the two paired focusing magnetic steels 33 can be prevented from being different during the automatic focusing process of the lens module, which causes the focusing bracket 3 to rotate, i.e., causes the lens 31 to rotate, and reduces the imaging quality of the lens 31.

With reference to fig. 3, 4, 9 and 10, the lens module further includes a second base 5, an anti-shake magnetic steel 32, an anti-shake coil 211 and a second elastic element 61. The second base 5 is provided on the bottom side of the first base 4. Anti-shake magnet steel 32 is installed in focusing support 3, and anti-shake coil 211 is installed on the roof 1 of shell and is used for with anti-shake magnet steel 32 cooperation in order to drive focusing support 3 and move along the direction of perpendicular to optical axis for second base 5, and the one end and the first base 4 of second elastic component 61 are connected, the other end and second base 5 are connected.

Referring to fig. 4, 9 and 10, the lens module further includes a second ball 51, three third guide grooves 42 are formed in the bottom side of the first base 4 and perpendicular to the optical axis, three fourth guide grooves 52 are formed in the top side of the second base 5 and perpendicular to the optical axis (see fig. 13), and the third guide grooves 42 and the fourth guide grooves 52 are in one-to-one correspondence. The second ball 51 is disposed between the third guide groove 42 and the fourth guide groove 52, and each corresponding one of the third guide groove 42, the fourth guide groove 52 and the second ball 51 constitutes a second guide mechanism. The third guide groove 42 and the fourth guide groove 52 each extend in a direction perpendicular to the optical axis of the lens 31 to guide the second ball 51 to move in the direction perpendicular to the optical axis of the lens 31.

The third guide grooves 42 are provided in three, two fourth guide grooves 52 are provided on one side of the optical axis of the lens 31, the other fourth guide groove 52 is provided separately on the other side of the optical axis of the lens 31, the separately provided fourth guide grooves 52 are located between the two fourth guide grooves 52 provided in pairs in a direction parallel to the optical axis, and one second ball 51 is provided in each fourth guide groove 52. Referring to fig. 9, 10, 11 and 13, of the third guide grooves 42 and the fourth guide grooves 52, a cross-sectional profile of one of the third guide grooves 42 or a cross-sectional profile of one of the fourth guide grooves 52 is rectangular, and in this embodiment, a cross-sectional profile of one of the fourth guide grooves 52 is rectangular (refer to fig. 13), and the remaining cross-sectional profiles are trapezoidal or triangular. Two opposite inclined surfaces in the triangular and trapezoidal structures are attached to the second ball 51 to limit the second ball 51 from moving in a direction parallel to the optical axis of the lens 31. The cross-sectional profile of one of the third guide grooves 42 or the cross-sectional profile of one of the fourth guide grooves 52 is rectangular, so that the requirement on the machining precision of the part is reduced.

See fig. 5, the anti-shake magnetic steel 32 is installed in the focusing bracket 3, the focusing bracket 3 is provided with two second accommodating grooves 36 on the left and right sides of the optical axis of the lens 31, the anti-shake magnetic steel 32 is provided with two anti-shake magnetic steels 32, one anti-shake magnetic steel 32 is embedded in each second accommodating groove 36, and the anti-shake coil 211 is provided with two anti-shake magnetic steels and is arranged in one-to-one correspondence with the two anti-shake magnetic steels 32 (see fig. 3).

The number of the second elastic members 61 is three, and the three second elastic members 61 are disposed on the left and right sides of the lens 31, that is, on the side surface of the first base 4 parallel to the optical axis direction of the lens 31. One end of the second elastic member 61 is connected to the first base 4, and the other end is connected to the second base 5. The second elastic member 61 is elastically deformed only during the process of moving the focusing frame 3 and the first base 4 together with respect to the second base 5 in the direction perpendicular to the optical axis of the lens 31.

The working principle of the lens module is as follows:

the focusing coil 111 is used for cooperating with the focusing magnetic steel 33 to drive the focusing frame 3 to move along the direction of the optical axis of the lens 31 relative to the first base 4 and the second base 5 (referring to fig. 4 and 8, the first elastic member 62 is deformed, and the second elastic member 61 is not substantially deformed) so as to automatically focus the lens 31. When the focusing coil 111 is de-energized, the focusing frame 3 is restored by the elastic restoring force of the first elastic member 62.

The anti-shake coil 211 is used for cooperating with the anti-shake magnetic steel 32 to drive the focusing frame 3 and the first base 4 to move together along the direction perpendicular to the optical axis relative to the second base 5 (referring to fig. 4 and 9, the second elastic member 61 is deformed and the first elastic member 62 is not deformed basically in the process), so that the optical anti-shake of the lens 31 is realized. When the anti-shake coil 211 is powered off, the focusing frame 3 and the first base 4 are restored by the elastic restoring force of the second elastic member 61.

Referring to fig. 2 and 3, the lens module further includes a first circuit board 21 mounted on the top plate 2 and a second circuit board 11 mounted on the bottom plate 1. The focusing coil 111 is electrically connected with the second circuit board 11, and the anti-shake coil 211 is electrically connected with the first circuit board 21, so that the focusing coil 111 and the anti-shake coil 211 can be electrified to generate magnetic force.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.