CN111929801A - Lens driving mechanism - Google Patents

Abstract

The invention discloses a lens driving mechanism which comprises a base, a lower reed, a magnet group, a carrier, an upper reed, a shell, a crystal lens carrier and a support, wherein the base is movably connected with the bottom of the carrier through the lower reed, the upper surface of the carrier is connected with the inner wall of the shell through the upper reed, the carrier is provided with a coil, the magnet group is arranged on the inner wall of the shell and matched with the coil, the crystal lens carrier is matched with the carrier and fixedly arranged on the shell, and the support is arranged at the top of the carrier. The invention realizes the focusing function through the deformation of the crystal lens, and has ingenious conception and high stability.

Description

Lens driving mechanism

Technical Field

The invention relates to the field of imaging, in particular to a lens driving mechanism.

Background

With the development of technology, many electronic devices (such as smart phones or digital cameras) have a function of taking pictures or recording videos. The use of these electronic devices is becoming more common and the design direction of these electronic devices is being developed to be more convenient and thinner to provide more choices for users. However, at present, zooming is usually realized by using a carrier to drive a lens to move.

Disclosure of Invention

The invention aims to provide a lens driving mechanism to provide a brand new zooming mode.

In order to solve the above problems, according to an aspect of the present invention, there is provided a lens driving mechanism, including a base, a lower spring, a magnet group, a carrier, an upper spring, a housing, a crystal lens carrier, and a bracket, wherein the lower spring movably connects the base with the bottom of the carrier, the upper spring connects the upper surface of the carrier with the inner wall of the housing, the carrier is provided with a coil, the magnet group is mounted on the inner wall of the housing and is engaged with the coil, the crystal lens carrier is engaged with the carrier and is fixedly mounted on the housing, and the bracket is mounted on the top of the carrier.

In one embodiment, the carrier comprises a carrier base and a plurality of protruding blocks integrally and upwards extending from the upper surface of the carrier base, wherein the tops of the protruding blocks are provided with bracket mounting parts, and the brackets are mounted on the bracket mounting parts.

In one embodiment, the upper surface of the housing is provided with an opening, a housing protrusion is formed around the opening, the housing protrusion extends upwards from the upper surface of the housing by a certain distance, and the crystal lens carrier is fixedly mounted on the housing protrusion.

In one embodiment, the bracket mounting portion comprises a groove and bracket fixing columns located on two sides of the groove, the bracket is provided with fixing holes matched with the bracket fixing columns, and the bracket is fixed on the bracket mounting portion by matching the bracket fixing holes with the bracket fixing columns.

In one embodiment, the crystal lens carrier is provided with a lens group mounting hole inside, the inner wall of the lens group mounting hole is provided with a plurality of crystal lens carrier grooves, and the crystal lens carrier grooves are matched with the convex blocks of the carrier.

In one embodiment, the crystal lens carrier has a plurality of crystal lens carrier protrusions on its interior, and the grooves are located on the sides of the crystal lens carrier protrusions.

In one embodiment, the outer wall of the lens carrier is provided with an annular flange that mates with and rests on the housing protrusion.

In one embodiment, the holder includes an annular body having an opening formed in a middle portion thereof, a plurality of pairs of holder protrusions integrally protruding outward from an outer periphery of the annular body, and a holder groove formed between each pair of holder protrusions and engaged with the carrier groove of the carrier.

In one embodiment, the base has a central base opening formed in the middle thereof for cooperating with the lens set, and an annular base projection protruding toward the top wall of the housing is formed around the central base opening.

In one embodiment, the bottom of the carrier is further provided with a sensor magnet, the base is provided with a sensor, and the sensor magnet are matched to detect the displacement of the carrier relative to the base.

In one embodiment, the base further comprises a base embedded metal sheet provided with an external connection portion and first and second coil connection portions to be respectively fitted with corresponding portions of the lower spring plate, thereby electrically connecting the coil with an external circuit through the base embedded metal sheet and the lower spring plate.

In one embodiment, the upper surface of the housing is provided with a sunken section, and the upper spring comprises an outer ring fixedly connected to an inner surface of the sunken section and an inner ring fixedly connected to an upper surface of the carrier base.

According to another aspect of the present invention, there is provided a lens assembly, the lens assembly includes a base, a lower spring, a magnet set, a carrier, an upper spring, a housing, a crystal lens carrier, a bracket, and a crystal lens, the lower spring movably connects the base with the bottom of the carrier, the upper spring connects the top of the carrier with the inner wall of the housing, the carrier has a coil, the magnet set is mounted on the inner wall of the housing and is matched with the coil, the crystal lens carrier is fixedly mounted on the housing and is matched with the carrier, the crystal lens is mounted on the crystal lens carrier, the bracket is mounted on the top of the carrier and is matched with the crystal lens, the coil drives the carrier to drive the bracket to move towards the crystal lens when being powered on, and presses the crystal lens to deform, thereby realizing a focusing function.

In one embodiment, the lens assembly further comprises a lens group, a plurality of lens group protrusions are arranged at the front end of the lens group, a lens group mounting hole is arranged inside the crystal lens carrier, a plurality of crystal lens carrier grooves are arranged on the inner wall of the lens group mounting hole, and the crystal lens carrier grooves are matched with the lens group protrusions.

In one embodiment, the lens group includes a lens barrel and a lens, the lens is disposed inside the lens barrel, a plurality of protrusions are disposed at a front end of the lens barrel, and the plurality of protrusions are engaged with grooves inside the crystal lens carrier.

In one embodiment, the carrier comprises a carrier base and a plurality of protruding blocks integrally and upwards extending from the upper surface of the carrier base, wherein the tops of the protruding blocks are provided with bracket mounting parts, and the brackets are mounted on the bracket mounting parts.

In one embodiment, the upper surface of the housing is provided with an opening, a housing protrusion is formed around the opening, the housing protrusion extends upwards from the upper surface of the housing by a certain distance, and the crystal lens carrier is fixedly mounted on the housing protrusion.

In one embodiment, the bracket mounting portion comprises a groove and bracket fixing columns located on two sides of the groove, the bracket is provided with fixing holes matched with the bracket fixing columns, and the bracket is fixed on the bracket mounting portion by matching the bracket fixing holes with the bracket fixing columns.

In one embodiment, the crystal lens carrier is provided with a plurality of crystal lens carrier protrusions in the interior, and the surfaces of the crystal lens carrier protrusions are provided with the crystal lens carrier grooves.

In one embodiment, the outer wall of the lens carrier is provided with an annular flange that mates with and rests on the housing protrusion.

In one embodiment, the holder includes an annular body having an opening formed in a middle portion thereof, a plurality of pairs of holder protrusions integrally protruding outward from an outer periphery of the annular body, and a holder groove formed between each pair of holder protrusions and engaged with the carrier groove of the carrier.

In one embodiment, the base has a central base opening formed in the middle thereof for cooperating with the lens set, and an annular base projection protruding toward the top wall of the housing is formed around the central base opening.

In one embodiment, the bottom of the carrier is further provided with a sensor magnet, the base is provided with a sensor, and the sensor magnet are matched to detect the displacement of the carrier relative to the base.

In one embodiment, the base further comprises a base embedded metal sheet provided with an external connection portion and first and second coil connection portions to be respectively fitted with corresponding portions of the lower spring plate, thereby electrically connecting the coil with an external circuit through the base embedded metal sheet and the lower spring plate.

In one embodiment, the upper surface of the housing is provided with a sunken section, and the upper spring comprises an outer ring fixedly connected to an inner surface of the sunken section and an inner ring fixedly connected to an upper surface of the carrier base.

According to another aspect of the present invention, there is also provided a carrier of a lens assembly, the lens assembly including a holder and a lens block, the carrier including a carrier base and a plurality of carrier projections integrally projecting upward from an upper surface of the carrier base, a central portion of the carrier base being provided with a carrier central hole, the plurality of carrier projections being arranged around the central hole and provided at a top portion with a holder mounting portion, the holder being mounted on the holder mounting portion.

In one embodiment, the upper surface of the carrier base is further provided with a limiting part, the limiting part is arranged on the outer side of the carrier protruding block, the limiting part extends upwards for a certain distance, and the height of the limiting part is lower than that of the carrier protruding block.

In one embodiment, the lens assembly further includes an upper spring, the upper spring includes a carrier connecting portion, an L-shaped groove is further disposed between the limiting portion and the protruding block, and the L-shaped groove is matched with the carrier connecting portion of the upper spring to fix the inner ring of the upper spring to the carrier base.

In one embodiment, the lens assembly further comprises a base provided with a sensor, and the bottom of the carrier base is further provided with a sensor magnet, the sensor magnet cooperating with the sensor.

In one embodiment, a sensor magnet mounting hole is formed in a bottom portion of the carrier base, and the sensor magnet is mounted in the sensor magnet mounting hole.

In one embodiment, the lens assembly further comprises a housing, the inner wall of the housing is provided with a magnet set, the carrier base is further provided with a coil matched with the magnet set, and the coil is arranged around the carrier base.

In one embodiment, the bracket mounting portion includes a carrier recess and carrier fixing posts located on both sides of the carrier recess, and the bracket includes a bracket recess and bracket fixing holes, the bracket recess being engaged with the carrier recess, and the bracket fixing holes being engaged with the carrier fixing posts.

In one embodiment, an opening is formed in the bracket groove, and the opening extends in the optical axis direction.

In one embodiment, the outer side of the bracket groove is provided with a bracket convex part for limiting the crystal lens.

In one embodiment, the outer corner of the bracket mounting part is also provided with a notch.

According to another aspect of the present invention, there is also provided a crystal lens carrier of a lens driving assembly, the lens driving assembly includes a crystal lens and a lens group, the crystal lens carrier has a crystal lens carrier mounting hole matched with the lens group, the inner wall of the crystal lens carrier mounting hole is provided with a plurality of crystal lens carrier protrusions, the plurality of crystal lens carrier protrusions are provided with crystal lens carrier grooves therein, and the crystal lens carrier grooves are matched with the lens group protrusions on the lens group.

In one embodiment, the lens driving assembly further includes a housing, an upper surface of the housing is provided with a housing protrusion, an upper portion of the crystal lens carrier is provided with an annular flange protruding in a direction perpendicular to an outer wall of the crystal lens carrier, the annular flange extends around the outer wall of the crystal lens and forms a step with the outer wall of the crystal lens carrier, and the step rests on the housing protrusion.

In one embodiment, the lens driving assembly further comprises a carrier, the carrier is provided with a carrier protrusion, and a space matched with the carrier protrusion is formed between every two crystal lens carrier grooves.

In one embodiment, the flange is further provided with a flange groove.

In one embodiment, the flange groove extends from an upper surface of the flange to a lower surface of the flange and has the same height as the flange.

In one embodiment, the upper surface of the flange is further provided with a plurality of flange protrusions to limit the position of the crystal lens.

In one embodiment, the flange projection is spaced apart from the flange groove.

In one embodiment, a crystal lens second groove is further arranged on the outer wall of the crystal lens carrier below the flange.

In one embodiment, a crystal lens notch is further formed on the outer wall of the crystal lens carrier below the flange.

In one embodiment, the crystal lens notch is spaced apart from the crystal lens second groove.

The invention realizes the focusing function through the deformation of the crystal lens, and has ingenious conception and high stability.

Drawings

Fig. 1 is a perspective view of a lens assembly of one embodiment of the present invention.

Fig. 2 is a perspective view of a base of one embodiment of the present invention.

Fig. 3 is a perspective view of a metal sheet embedded in a base in accordance with one embodiment of the present invention.

Figure 4 is a perspective view of a lower spring plate according to one embodiment of the present invention.

Figure 5 is a perspective view of a top spring according to one embodiment of the present invention.

Fig. 6 is a perspective view of a carrier according to one embodiment of the present invention.

Fig. 7 is a perspective view of a stent according to one embodiment of the present invention.

Fig. 8 is a perspective view of a crystalline lens carrier according to one embodiment of the invention.

Fig. 9 is a perspective view of a housing of one embodiment of the present invention.

Fig. 10 is a perspective view of a lens array according to an embodiment of the present invention.

Fig. 11 and 12 are different sectional views of the lens assembly of the present invention, respectively.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present invention.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.

Fig. 1 is a perspective view of a lens assembly of one embodiment of the present invention. As shown in fig. 1, the lens assembly integrally includes a crystal lens 10, a holder 20, a crystal lens carrier 30, a housing 40, an upper spring 51, a lens group 60, a carrier 70, a magnet group 52, a lower spring 53, a base 80, and a base-embedded metal sheet 90. The base embedded gold sheet 90 is embedded in the base 80, the lower spring 53 is installed on the base 80 and movably connects the base 80 with the surface (called lower surface) of the carrier 70 facing the base 80, the magnet group 52 is fixedly installed on the inner wall of the housing 40 and is matched with the coil on the carrier 70, and the upper spring 51 movably connects the surface (called upper surface) of the carrier 70 far away from the base 80 with the housing 40. The crystal lens carrier 30 is mounted on the housing 40 and is matched with the carrier 70, the bracket 20 is mounted on the crystal lens carrier 30 and is used for supporting the crystal lens 10, and the lens group 60 is fixedly mounted on the base 80. When the carrier 70 moves towards the crystal lens 10 along the optical axis, the support 20 moves towards the crystal lens 10 along with the carrier 70 and extrudes the crystal lens 10, so that a convex part protruding towards the base direction is extruded out of the middle part of the crystal lens 10, and the crystal lens 10 is deformed to realize the focusing function.

Fig. 2 is a perspective view of the base 80. As shown in fig. 2, a central opening 81 of the base is formed in the middle of the base 80 for cooperating with the lens assembly 60, a ring-shaped protrusion 82 of the base is formed around the central opening 81 of the base and protrudes toward the crystal lens 10, the ring-shaped protrusion 82 of the base extends toward the crystal lens 10 along the optical axis for a certain distance S1, and the lens assembly 60 is fixedly mounted in the central opening 81 defined by the ring-shaped protrusion 82 of the base 80. The outer wall of the annular protrusion 82 is fitted with the inner wall of the carrier center hole 711 on the base 71 of the carrier 70, that is, the carrier center hole 711 on the base 71 of the carrier 70 is arranged around the annular protrusion 82 of the pedestal 80 (see fig. 10 and 11). The four corners of the base 80 are respectively provided with a supporting column 83 protruding toward the crystal lens 10, the supporting column 83 extends a certain distance S2 toward the crystal lens 10 along the optical axis direction, and the shell 40 is sleeved outside the supporting group 83. In one embodiment, the distance S1 that the annular protrusion 82 extends in the optical axis direction is smaller than the distance S2 that the support post 83 extends in the optical axis direction.

With continued reference to fig. 2, lower spring fixing posts 84 are provided on both sides of the supporting post 83, and the base fixing holes 532 of the lower spring 53 are fixed on the lower spring fixing posts 84. One side of the base 80 is further provided with a first base embedded metal sheet interface 85 and a second base embedded metal sheet interface 86. The first lower reed connecting part 93 and the second lower reed connecting part 94 of the base embedded metal sheet 90 extend into the first base embedded metal sheet interface 85 and the second base embedded metal sheet interface 86, respectively.

Fig. 3 is a perspective view of a base insert sheet metal 90. As shown in fig. 3, the base insert sheet metal 90 includes an annular body 91, a plurality of external connection portions 92, and first and second lower spring attachment portions 93 and 94. The first lower reed connecting portion 93 and the second lower reed connecting portion 94 are connected to the first base embedded metal sheet connecting portion and the second base embedded metal sheet connecting portion on the lower reed 53, respectively.

Fig. 4 is a perspective view of the lower spring 53. As shown in fig. 4, the lower spring 53 is composed of a first part 531 and a second part 532 which are independent of each other, the first part 531 and the second part 532 are combined to form a substantially rectangular structure, and include a carrier fixing portion 533 at an inner periphery, a base fixing portion 534 at four corners, and a coil connecting portion 535, and the carrier fixing portion 533 and the base fixing portion 534 are connected by an elastic strip 536, so that the carrier fixing portion 533 and the base fixing portion 534 can perform a relative movement. In this embodiment, a total of two coil connection portions 535 are provided, and the two coil connection portions 535 are respectively connected to both ends of the coil, so that the coil is electrically connected to the base embedded metal sheet through the lower spring 53, and then an external current is introduced into the coil through the base embedded metal sheet. Specifically, the middle portion of base fixing portion 534 is formed with a U-shaped opening that fits with support post 83 of base 80, and lower spring fixing holes are formed on both sides of the U-shaped opening to be fixedly connected with lower spring fixing posts 84 on base 80. The carrier fixing portion 533 includes a circular hole 5331 and an arc-shaped groove 5332, and the carrier fixing portion 533 is fixedly connected to the bottom of the carrier 70 through the circular hole 5331 and the arc-shaped groove 5332. The lower spring 50 is further provided with base embedded metal sheet connecting portions, which may be provided on, for example, two of the lower spring fixing portions 534, for example, in the embodiment shown in fig. 4, a first base embedded metal sheet connecting portion and a second base embedded metal sheet connecting portion may be provided on the two lower spring fixing portions 534 on the right side in the figure, respectively, so as to electrically connect the base embedded metal sheet with the coil through the lower spring 53, and further electrically connect an external circuit with the coil.

Fig. 5 is a perspective view of the upper spring piece 51. As shown in fig. 5, the upper spring 51 includes an outer ring 511 and an inner ring 512, the outer ring 511 is fixed to the top wall of the housing 40, and the inner ring 512 is fixed to the upper surface of the carrier 60, so that the housing 40 and the carrier 70 are movably coupled by the upper spring 51. Specifically, four corners of the outer ring 511 are provided with upper reed housing connection portions 513, the inner ring 512 is provided with carrier connection portions 514, the housing connection portions 513 are fixed to the top wall of the housing, and the carrier connection portions are fixed to the upper surface of the carrier 70.

Fig. 6 is a perspective view of the carrier 70. As shown in fig. 6, the carrier 70 includes a carrier base 71, a carrier central hole 711 is formed in the middle of the carrier base 71, and the carrier central hole 711 is engaged with the annular protrusion 83 on the base 80 and sleeved on the annular protrusion 83 of the base. A coil 72 (see fig. 10 and 11) is wound around a side portion of the carrier base 71, a plurality of protruding blocks 73 protruding toward the housing top wall are provided on a surface of the carrier base 71 facing the housing top wall, the protruding blocks 73 extend in the optical axis direction by a certain distance and are provided with a bracket mounting portion 731 at a top portion, and the bracket 20 is fittingly mounted on the bracket mounting portion 731. Specifically, the bracket mounting part 731 comprises a groove 732 and fixing posts 734 located at two sides of the groove, the groove 732 is further provided with an opening 733, the outer side of the groove 732 is provided with a protruding part 736, and the outer corner of the bracket mounting part 731 is further provided with a notch 735. The upper surface of the carrier base 71 is further provided with a stopper portion 74, the stopper portion 74 protrudes upward by a certain distance, for example, to prevent the top wall of the housing from colliding with the carrier base, and the inside of the stopper portion 73 is provided with an L-shaped groove 76, and the L-shaped groove 76 is adapted to cooperate with the carrier connecting portion 514 of the upper spring 51 to fix the inner ring of the upper spring 51 to the upper surface of the base 71 of the carrier 70.

Referring to fig. 10 and 11, the bottom of the carrier 70 is further provided with a sensor magnet 77, specifically, the bottom of the carrier 70 is formed with a sensor magnet mounting hole, and the sensor magnet 77 is mounted in the sensor magnet mounting hole. The carrier base 71 surrounding the carrier 70 is provided with a coil 62 to cooperate with a magnet group 80 mounted to the inner wall of the housing, thereby driving the carrier 70 to move in the optical axis direction by electromagnetic induction.

Fig. 7 is a perspective view of the stand 20. As shown in fig. 7, the stent 20 includes a ring body 21, a stent opening 26 is formed in the middle of the ring body 21, a plurality of pairs of stent protrusions 22 integrally extend outward from the outer periphery of the ring body 21, and a stent groove 24 is formed between each pair of protrusions 22. The bracket projections 22 are provided with bracket fixing holes 23, wherein one bracket projection of each of the two pairs of bracket projections 22 is provided with a bracket projection groove 25. The bracket recesses 24 are fitted into the carrier recesses 732 of the carrier 70, and the bracket fixing holes 23 are fitted into the carrier fixing posts 734 of the carrier 70, so that the bracket 20 is fixedly mounted on the bracket mounting portion 731 of the carrier 70. In this example, a total of four pairs of the projections 22 are provided, and the four pairs of the projections 22 are uniformly distributed on the periphery of the ring-shaped body 21.

Fig. 8 is a perspective view of the crystal optic carrier 30. As shown in fig. 8, the crystal lens carrier 30 is used for mounting the crystal lens 10 and has a crystal lens carrier mounting hole 31 matching with the carrier 70, a plurality of crystal lens carrier protrusions 311 are disposed on an inner wall of the crystal lens carrier mounting hole 31, a crystal lens carrier groove 312 is disposed in the crystal lens carrier protrusion 311, the crystal lens carrier groove 312 matches with the lens group protrusion on the lens group 60, that is, the lens group protrusion of the lens group 60 extends into the crystal lens carrier groove 312. The space between every two crystal lens carrier recesses 312 is adapted to mate with a carrier projection 73 on the carrier 70, that is, the carrier projection 73 extends into the space between two crystal lens carrier recesses 312. The lower portion of the crystal lens carrier 30 is received in a housing central opening 44 defined by an annular projection 43 of the housing 40, and the crystal lens 10 is mounted in the crystal lens mounting hole 31. The upper portion of the crystal lens carrier 30 is provided with an outwardly projecting annular flange 322, the annular flange 322 forming a step with the outer wall of the crystal lens carrier 30, the annular flange 322 resting on the housing projection 43 on the upper surface of the housing 40. A flange groove 321 is also provided on the flange 322 to facilitate robot gripping. The upper surface of the annular flange 322 is also provided with a flange projection 35 to retain the crystal lens.

Fig. 9 is a perspective view of the housing 40. As shown in fig. 9, the housing 40 has an upper surface 41 and a side wall 42, the upper surface 41 is provided with a housing central opening 44, a housing protrusion 43 is formed around the housing central opening 44, and the housing protrusion 43 is formed to extend upward from the upper surface 41 by a certain distance and is preferably provided to have a polygonal shape, for example, an octagonal shape. The lower portion of the lens carrier 30 extends into the housing central opening 44 and the flange 322 rests on the housing ledge 43. The corner of the upper surface 41 forms a sunken part 45, the inside of the upper surface 41 forms a top wall of the housing 40, and the inner surface of the sunken part 45 is fixedly connected with the housing connecting part of the upper spring 51.

Fig. 10 is a perspective view of the mirror group 60. As shown in fig. 10, the lens assembly 60 integrally includes a lens barrel 61 and a lens 62, the lens 62 is disposed inside the lens barrel 61, the lens barrel 61 includes a base fixing portion 611, a base matching portion 612, a carrier matching portion 614 and a front end portion 615, the front end portion 615 is provided with a plurality of protrusions 616, and the plurality of protrusions 616 are matched with the crystal lens carrier grooves 312 on the inner wall of the crystal lens carrier 30. A concave 617 is formed between each two of the convex portions 616.

Fig. 11 and 12 are different sectional views of the lens assembly 100 of the present invention, respectively. As shown in fig. 11 and 12, the housing 40 is housed outside the base 80, the carrier 70 is mounted on the upper surface of the base 80, the crystal lens carrier 30 is fixedly mounted on the housing protrusion 43 of the housing 80, the bracket 11 is mounted on the top of the protrusion of the carrier 70, and the crystal lens 10 is mounted on the crystal lens carrier 30. When the lens focusing device operates, an external current is connected to the lower spring 53 through the base embedded metal sheet 90, and then is connected to the coil 72 through the lower spring 53, after the coil 72 is powered on, under the action of a magnetic field force generated by the magnet group 52, the carrier 70 is driven to move along the optical axis direction, the bracket 20 fixed to the top of the carrier 70 is driven to move, the bracket 20 moves upwards and presses the crystal lens 10, so that the crystal lens 10 deforms, specifically, the part of the crystal lens 10 corresponding to the bracket opening 26 of the bracket 20 deforms towards the bracket opening 26, and thus the focusing function is realized. In the process, base 80, housing 40, crystal lens carrier 30, and lens assembly 60 remain stationary relative to carrier 70 and support 30. The invention realizes the focusing function through the deformation of the crystal lens, and has ingenious conception and high stability.

It should be noted that, in another embodiment of the present invention, a lens driving mechanism may be further provided, and the lens driving mechanism may only include the above-mentioned holder 20, crystal lens carrier 30, housing 40, upper spring 51, carrier 70, magnet group 52, lower spring 53, mount 80, and mount embedded metal sheet 90. The mounting and details thereof refer to the description above. The lens driving mechanism can be used for installing the lens and driving the crystal lens to deform, so that the focusing function is realized.

While the preferred embodiments of the present invention have been illustrated and described in detail, it should be understood that various changes and modifications of the invention can be effected therein by those skilled in the art after reading the above teachings of the invention. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims (12)

1. The utility model provides a lens actuating mechanism, its characterized in that, lens actuating mechanism includes base, lower reed, magnet group, carrier, goes up reed, casing, crystal lens carrier and support, the lower reed will the base with the bottom swing joint of carrier, it will to go up the reed the upper surface of carrier with the inner wall of casing is connected, the carrier is equipped with the coil, magnet group install in on the inner wall of casing and with the coil cooperation, crystal lens carrier with carrier cooperation and fixed mounting in on the casing, the support mounting in the top of carrier.

2. The lens driving mechanism according to claim 1, wherein the carrier includes a carrier base and a plurality of projecting blocks integrally projecting upward from an upper surface of the carrier base, tops of the projecting blocks being provided with bracket mounting portions on which the brackets are mounted.

3. The lens driving mechanism according to claim 1, wherein the housing has an opening on an upper surface thereof, a housing projection is formed around the opening, the housing projection is formed to extend upward from the upper surface of the housing by a predetermined distance, and the crystal lens carrier is fixedly mounted on the housing projection.

4. The lens driving mechanism according to claim 1, wherein the mount mounting portion includes a recess and mount fixing posts located on both sides of the recess, the mount is provided with fixing holes to be engaged with the mount fixing posts, and the mount is fixed to the mount mounting portion by engaging the mount fixing holes with the mount fixing posts.

5. The lens driving mechanism according to claim 1, wherein the crystal lens carrier has a lens group mounting hole formed therein, and a plurality of crystal lens carrier grooves are formed in an inner wall of the lens group mounting hole, the crystal lens carrier grooves being engaged with the projections of the carrier.

6. The lens driving mechanism according to claim 5, wherein the crystal lens carrier has a plurality of crystal lens carrier projections provided on an inner portion thereof, and wherein the grooves are provided on side portions of the crystal lens carrier projections.

7. The lens driving mechanism according to claim 1, wherein an outer wall of the crystal lens carrier is provided with an annular flange which is fitted with and rests on the housing projection.

8. The lens driving mechanism according to claim 1, wherein the holder includes a ring-shaped body, the ring-shaped body has an opening formed in a central portion thereof, a plurality of pairs of holder projections integrally projecting outward from an outer periphery of the ring-shaped body, a holder groove formed between each pair of holder projections, the holder groove being engaged with the carrier groove on the carrier.

9. A lens driving mechanism according to claim 1, wherein said base has a central base opening formed in a central portion thereof for fitting with the lens group, and a ring-shaped base projection projecting toward the top wall of the housing is formed around said central base opening.

10. The lens driving mechanism according to claim 1, wherein a sensor magnet is further provided on a bottom portion of the carrier, and a sensor is provided on the base, and displacement of the carrier with respect to the base is detected by cooperation of the sensor and the sensor magnet.

11. The lens driving mechanism according to claim 1, wherein the base further comprises a base embedded metal plate provided with an external connection portion and first and second coil connection portions to be engaged with corresponding portions of the lower spring, respectively, to electrically connect the coil with an external circuit through the base embedded metal plate and the lower spring.

12. The lens driving mechanism according to claim 2, wherein the upper surface of the housing is provided with a depressed portion, and the upper spring includes an outer ring fixedly attached to an inner surface of the depressed portion and an inner ring fixedly attached to an upper surface of the carrier base.

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