Optical element drive mechanism and frame assembly therefor

Abstract

The utility model discloses a kind of optical element driving mechanism and its frame assembly, including base and frame assembly, the base is equipped with prism;The frame assembly is located above the base, and the frame can move along horizontal aspect.Frame assembly includes frame and carrier, and the first lens is installed in the frame.The carrier is annular and is movably connected with the frame along vertical direction, and the second lens is installed in the ring of the carrier, and the second lens is located below the first lens.

Description

Technical Field

[0001] This utility model relates to the field of optical element driving technology, and in particular to an optical element driving mechanism and its frame assembly. Background Technology

[0002] With the development of technology, many electronic devices today (such as smartphones or digital cameras) have the function of taking pictures or recording videos. The use of these electronic devices is becoming more and more common, and they are developing towards convenient and thinner designs to provide users with more choices.

[0003] Some electronic devices with photographic or video recording capabilities include optical element driving structures to drive optical components such as lenses to move, thereby achieving autofocus and optical image stabilization. Light can pass through the aforementioned optical components to form an image on the photosensitive element.

[0004] In existing optical element driving structures, all lenses are mounted on a carrier, which drives multiple lenses to move together. However, the range of light received is relatively small and cannot meet the shooting requirements. Utility Model Content

[0005] The purpose of this invention is to provide an optical element driving mechanism and its frame assembly to solve the problems of the prior art.

[0006] To address the aforementioned technical problems, embodiments of this utility model provide a frame component, comprising:

[0007] A frame in which a first lens is mounted;

[0008] The carrier is ring-shaped and movably connected to the frame in the vertical direction, and a second lens is installed inside the ring of the carrier, the second lens being located below the first lens.

[0009] In one embodiment, the framework includes:

[0010] An annular frame, wherein the annular frame is ring-shaped; and

[0011] The mounting bracket is annular and is mounted on the top surface of the annular frame;

[0012] The first lens is mounted inside the ring of the mounting bracket.

[0013] In one embodiment, a mounting groove is provided on one side of the annular frame, and a first coil assembly is installed in the mounting groove;

[0014] The carrier is provided with a first magnet group, which is aligned with and cooperates with the first coil group to drive the carrier to move in the vertical direction.

[0015] In one embodiment, the framework component further includes:

[0016] A first circuit board is attached to the outside of the first coil group and electrically connected to the first coil group;

[0017] An adsorption metal sheet is attached to the outside of the first circuit board and is used to adsorb the first magnet group.

[0018] In one embodiment, two guide shafts are installed on the inner side of the annular frame, and the two guide shafts are respectively located on both sides of the first coil group and their axes extend in the vertical direction;

[0019] The carrier is in a rolling connection with the guide shaft.

[0020] In one embodiment, a mounting plate is provided on the radially outer side of the mounting bracket, the mounting plate covering the top surface of the annular frame and connected to the annular frame.

[0021] In one embodiment, the carrier is located below the mounting bracket and has anti-collision colloid on its top surface.

[0022] This utility model also relates to an optical element driving mechanism, comprising:

[0023] A base on which a prism is mounted;

[0024] The aforementioned frame assembly is located above the base, and the frame is movable in a horizontal direction.

[0025] In one embodiment, the bottom surface of the base is provided with a mounting hole recessed to the top surface, and the mounting hole is located below the second lens;

[0026] The prism is located inside the mounting hole.

[0027] In one embodiment, the optical element driving mechanism further includes a plurality of suspension wires;

[0028] The bottom ends of the multiple suspension wires are connected to the base, and the top ends are connected to the frame assembly.

[0029] In one embodiment, the frame assembly further includes a reed connected to the frame;

[0030] The tips of the plurality of suspension wires are connected to the spring.

[0031] In one embodiment, the top surface of the base is provided with a plurality of grooves;

[0032] The frame is provided with multiple clearance holes;

[0033] The bottom ends of the multiple suspension wires are connected to the bottom wall of the groove, and the top ends pass through the multiple clearance holes and are connected to the spring.

[0034] In one embodiment, the framework component further includes:

[0035] A first coil group, the first coil group being connected to the frame;

[0036] The first magnet group is connected to the carrier and cooperates with the first coil group to drive the carrier to move in the vertical direction;

[0037] A first circuit board is attached to the outside of the first coil group and electrically connected to the first coil group.

[0038] In one embodiment, the base has built-in wiring;

[0039] The optical element driving mechanism further includes:

[0040] A second circuit board is stacked on the top surface of the base and electrically connected to the built-in circuitry.

[0041] A second coil group, the second coil group being electrically connected to the second circuit board; and

[0042] The second magnet group is connected to the frame and cooperates with the second coil group to drive the frame to move in the horizontal direction.

[0043] In one embodiment, the bottom end of the suspension wire is electrically connected to the built-in circuitry;

[0044] The reed is electrically connected to the first circuit board.

[0045] In one embodiment, the frame is rotatably connected to the base.

[0046] In one embodiment, the prism has a trapezoidal cross-section along the vertical direction and the top surface dimension of the prism is larger than the bottom surface dimension.

[0047] In one embodiment, the optical element driving mechanism further includes a housing that covers the frame assembly and has its bottom end connected to the base;

[0048] The outer casing is provided with through holes;

[0049] The framework includes:

[0050] Circular frame, and

[0051] Mounting bracket, which is annular and mounted on the top surface of the annular frame, with its top extending through the through hole to the outside of the housing;

[0052] The first lens is mounted inside the ring of the mounting bracket. Attached Figure Description

[0053] Figure 1 This is a perspective view of an optical element driving mechanism according to an embodiment of the present invention.

[0054] Figure 2 yes Figure 1 An exploded view of the optical element driving mechanism in the illustrated embodiment.

[0055] Figure 3 yes Figure 1 A perspective view of the optical element driving mechanism without the prism in the illustrated embodiment.

[0056] Figure 4 , Figure 5 and Figure 6 They are Figure 1 An exploded view of the optical element driving mechanism without the prism in the illustrated embodiment.

[0057] Figure 7 yes Figure 1 Exploded view of the base, second circuit board and four suspension wires in the embodiment shown.

[0058] Figure 8 yes Figure 1 Assembly diagram of the frame components in the illustrated embodiment.

[0059] Figure 9 , Figure 10 and Figure 11 yes Figure 8 An exploded view of the frame components in the illustrated embodiment.

[0060] Figure 12 yes Figure 8 The exploded view of the frame, guide shaft, first coil group, and first circuit board in the embodiment shown.

[0061] Figure 13 yes Figure 8 A perspective view of the ring frame in the illustrated embodiment.

[0062] Figure 14 This is a perspective view of a ring-shaped frame with an internal metal frame, according to one embodiment of this utility model.

[0063] Figure 15 yes Figure 1 A perspective view of the optical element driving mechanism without the prism in the illustrated embodiment.

[0064] Figure 16 yes Figure 15 The illustrated embodiment shows a cross-sectional view of the optical element drive mechanism excluding the prism along line AA.

[0065] Reference numerals: 100, Optical element driving mechanism; 1, Base; 11, Mounting hole; 12, Front opening; 13, Groove; 14, Ball bearing; 15, Suspension wire; 2, Frame; 21, Annular frame; 211, Clearance groove; 212, Clearance hole; 213, Mounting groove; 214, Support protrusion; 22, Mounting bracket; 23, Mounting plate; 24, Guide shaft; 25, First coil group; 26, First circuit board; 27, Adsorption metal sheet; 28, Built-in metal frame; 281, Built-in base plate; 29, Second magnet group; 3, Carrier; 31, First magnet group; 32, Anti-collision colloid; 4, Spring; 5, Outer shell; 51, Through hole; 6, Prism; 61, Front side; 62, Rear side; 7, Second circuit board; 9, Coil plate; 91, Second coil group; Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0067] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0068] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of this utility model. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of this utility model, but are merely illustrative of the essential spirit of the technical solution of this utility model.

[0069] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0070] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0071] In the following description, in order to clearly demonstrate the structure and working method of this utility model, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0072] This utility model relates to an optical element driving mechanism 100 and its frame assembly. The optical element driving mechanism 100 includes a base 1, a frame assembly, four suspension wires 15 and a housing 5.

[0073] The base 1 has a mounting hole 11 recessed from its bottom surface to its top surface. The mounting hole 11 has a front opening 12 that faces the front of the base 1. The mounting hole 11 is used to mount the prism 6.

[0074] The prism 6 has front and rear sides 62, a top surface, and a bottom surface. The cross-section of the prism 6 along the vertical direction is trapezoidal. The front side 61 and the rear side 62 are inclined surfaces for reflecting light. The top surface of the prism 6 is larger than the bottom surface. The prism 6 is fixedly installed in the mounting hole 11, and the front side of the prism 6 extends from the front opening 12 of the mounting hole 11 to the outside of the base 1.

[0075] The base 1 has built-in wiring for electrical connection to an external power source.

[0076] The base 1 is roughly in the shape of a rectangular plate with a certain thickness, and the four corners of the base 1 are respectively provided with grooves 13 that are recessed towards the bottom.

[0077] The bottom ends of the four suspension wires 15 are respectively connected to the bottom wall of the groove 13 and electrically connected to the built-in circuit, with their top ends extending upwards. In other embodiments, the bottom ends of the four suspension wires 15 can also be directly connected to the top surface of the base 1. By setting the base 1 with the groove 13 and placing the bottom ends of the four suspension wires 15 within the groove 13, the length of the suspension wires 15 can be extended, increasing the range of motion of the suspension wires 15.

[0078] The top surface of the base 1 is provided with four ball grooves. The four ball grooves can be formed by the groove 13 on the top surface of the base 1, or a protruding boss can be provided on the top surface of the base 1, and the top surface of the boss is recessed to form the ball grooves.

[0079] Four ball grooves are located at the four corners of the base 1 and radially inside the four recesses 13. Each ball groove contains a rolling ball 14, and the four balls 14 are used to roll and support the frame assembly. This facilitates the horizontal movement of the frame assembly, with the vertical direction being the optical axis.

[0080] The frame assembly includes a frame 2, a carrier 3, and four springs 4. The frame 2 is used to mount the first lens and includes an annular frame 21 and a mounting bracket 22. The annular frame 21 is rectangular and has a light-blocking hole. The annular frame 21 is located on the top surface of the base 1 and is rotatably connected to the base 1 by four ball bearings 14.

[0081] Mounting bracket 22 is also annular and located on the top surface of annular frame 21. Mounting bracket 22 is fixedly connected to the top surface of frame 2 via mounting plate 23. Specifically, mounting plate 23 is a plate-shaped structure that surrounds the radially outer side of mounting bracket 22. Mounting plate 23 covers and is connected to the top surface of frame 2.

[0082] In the embodiment shown in the figure, the top surface of the frame 2 is provided with a plurality of mounting posts, and the mounting plate 23 is provided with a plurality of mounting holes 11 connected to the mounting posts. In other embodiments, the mounting plate 23 can also be connected to the annular frame 21 in other ways. Of course, the mounting plate 23 and the annular frame 21 can also be made as a single piece, with the first lens mounted inside the ring of the frame 2 and close to the top surface of the frame 2.

[0083] The central hole of the mounting bracket 22, the light-blocking hole of the frame 2, and the top surface of the prism 6 are aligned. A first lens is installed in the central hole of the mounting bracket 22, which is used to receive external light.

[0084] The four springs 4 are located at the four corners of the annular frame 21 and are connected to the annular frame 21 by other mounting posts.

[0085] The four corners of the annular frame 21 are also provided with clearance grooves 211 and clearance holes 212 respectively. The clearance grooves 211 are located below the spring 4 to facilitate the movement of the spring 4.

[0086] The clearance hole 212 is formed by the bottom wall of the clearance groove 211 recessed into the bottom wall of the annular frame 21. The top ends of the four suspension wires 15 pass through the four clearance holes 212 respectively and are connected to the four springs 4. After the annular frame 21 moves, the four suspension wires 15 can drive the annular frame 21 to reset.

[0087] The carrier 3 is ring-shaped and located within the annular frame 21, below the mounting bracket 22 and mounting plate 23. The ring of the carrier 3 is used to mount the second lens, which is coaxially arranged with the first lens. The second lens, the first lens, and the prism 6 are aligned vertically. External light enters the first lens and is then projected onto the second lens. Because the first lens can move horizontally with the frame 2, it can receive a larger amount of external light. The light passes through the first lens and is projected onto the second lens, then onto the top surface of the prism 6. After passing through the top surface of the prism 6, it is refracted to the front and rear sides 62, and then refracted again to the bottom surface of the prism 6 for focusing, forming stable light.

[0088] Light passing through prism 6 can be turned 180 degrees before entering the image chip on the motor camera module to achieve the imaging effect. This design can reduce the overall thickness of the camera, making mobile phones or other smart devices thinner.

[0089] The carrier 3 can drive the second lens to move in the vertical direction. After the second lens moves in the AF direction, the distance between the second lens and the first lens changes, thereby achieving the effect of adjusting the focus of light.

[0090] exist Figure 1-10 In the embodiment shown, a mounting groove 213 is provided on one side of the annular frame 21. The mounting groove 213 is formed by a recess in the top surface of the annular frame 21. A first coil group 25, a first circuit board 26 and an adsorbent metal sheet 27 are installed in the mounting groove 213. The first coil group 25, the first circuit board 26 and the adsorbent metal sheet 27 are stacked sequentially from the inside to the outside. The first coil group 25 is located on the innermost side and is electrically connected to the first circuit board 26.

[0091] The first circuit board 26 is electrically connected to the spring 4, and is electrically connected to the built-in circuit of the base 1 through the spring 4 and the suspension wire 15.

[0092] The carrier 3 is provided with a first magnet group 31 on its radial outer side. The first magnet group 31 and the first coil group 25 are aligned with each other in the horizontal direction, and can drive the carrier 3 to move in the vertical direction in cooperation with the first coil group 25.

[0093] The first magnet group 31 is also aligned with the adsorption metal sheet 27 to adsorb the first magnet group 31, thereby adsorbing the carrier 3 to the side of the annular frame 21 where the first coil group 25 is located.

[0094] In addition, the annular frame 21 is provided with two rolling guide shafts 24 on one side of the mounting groove 213. The axes of the two guide shafts 24 extend vertically and the two guide shafts 24 are located on both sides of the mounting groove 213. When the carrier 3 moves vertically, it touches the two guide shafts 24 and rolls with the two guide shafts 24 to avoid direct contact with the annular frame 21.

[0095] The top and bottom surfaces of the carrier 3 are respectively provided with anti-collision gel 32. When the carrier 3 moves in the vertical direction, the anti-collision gel 32 can buffer the force of the carrier 3 touching the mounting frame 22 and the base 1.

[0096] The annular frame 21 also has an internal metal frame 28, which is ring-shaped and embedded within the annular frame 21. The internal metal frame 28 has multiple bends to enhance the strength of the annular frame 21. The internal metal frame 28 is electrically connected to the spring 4 and the first circuit board 26.

[0097] The ring frame 21 is also provided with a second magnet group 29. The top surface of the base 1 is also provided with a second circuit board 7 and a coil plate 9. The second circuit board 7 is located on the top surface of the base 1 and is electrically connected to the built-in circuit of the base 1. The coil plate 9 is located on the top surface of the second circuit board 7 and is provided with a second coil group 91 inside. The second coil group 91 and the second magnet group 29 cooperate to drive the frame 2 to move in the horizontal direction, so as to play a role in anti-shaking.

[0098] In addition, an adsorption metal sheet 27 is pre-embedded in the base 1. The adsorption metal sheet 27 and the second magnet group 29 at the bottom of the annular frame 21 generate an adsorption force, causing the bottom of the frame 2 to abut against the ball bearing 14. A chip clearance groove 211 is provided on the side wall of the base 1 to avoid the control chip at the bottom of the second circuit board 7. This chip is used to control the operation of the first coil group 25 and the second coil group 91.

[0099] The outer casing 5 covers the frame assembly and its bottom end is connected to the radially outer side of the base 1. The top surface of the outer casing 5 is provided with a through hole 51, through which light can be projected to the first lens and then enter the second lens. A position sensor is provided in the second circuit board 7, which cooperates with the second magnet group 29 at the bottom of the annular frame 21 to realize the position monitoring of the annular frame 21.

[0100] The bottom end of the ring frame 21 is provided with a support protrusion 214, and an internal base plate 281 is embedded in the support protrusion 214. The internal base plate 281 contacts the ball bearings 14 on the base 1 to achieve the support effect. At the same time, the internal base plate 281 can strengthen the structural strength of the ring frame 21.

[0101] In the embodiment shown in the figure, the top of the mounting bracket 22 extends from the through hole 51 to the outside of the housing 5. The through hole 51 is used to avoid the mounting bracket 22, and light enters the first lens directly.

[0102] The preferred embodiments of the present invention have been described in detail above, but it should be understood that, if necessary, aspects of the embodiments can be modified to utilize aspects, features, and concepts from various patents, applications, and publications to provide other embodiments.

[0103] In light of the detailed description above, these and other changes can be made to the embodiments. Generally, the terminology used in the claims should not be considered limited to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments together with the full scope of equivalents enjoyed by these claims.

[0104] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A framework component, characterized in that, include: A frame in which a first lens is mounted; The carrier is ring-shaped and movably connected to the frame in the vertical direction, and a second lens is installed inside the ring of the carrier, the second lens being located below the first lens.

2. The frame component according to claim 1, characterized in that, The framework includes: An annular frame, wherein the annular frame is ring-shaped; and The mounting bracket is annular and is mounted on the top surface of the annular frame; The first lens is mounted inside the ring of the mounting bracket.

3. The frame component according to claim 2, characterized in that, A mounting groove is provided on one side of the annular frame, and a first coil group is installed in the mounting groove; The carrier is provided with a first magnet group, which is aligned with and cooperates with the first coil group to drive the carrier to move in the vertical direction.

4. The frame component according to claim 3, characterized in that, The framework components also include: A first circuit board is attached to the outside of the first coil group and electrically connected to the first coil group; An adsorption metal sheet is attached to the outside of the first circuit board and is used to adsorb the first magnet group.

5. The frame component according to claim 4, characterized in that, Two guide shafts are installed on the inner side of the annular frame. The two guide shafts are located on both sides of the first coil group and their axes extend in the vertical direction. The carrier is in a rolling connection with the guide shaft.

6. The frame component according to claim 2, characterized in that, The mounting bracket has a mounting plate on its radially outer side, which covers the top surface of the annular frame and is connected to the annular frame.

7. The frame component according to claim 2, characterized in that, The carrier is located below the mounting frame and has anti-collision colloid on its top surface.

8. An optical element driving mechanism, characterized in that, include: The base on which a prism is mounted ； The frame assembly of claim 1, wherein the frame assembly is located above the base and the frame is movable in a horizontal direction.

9. The optical element driving mechanism according to claim 8, characterized in that, The base has a mounting hole recessed to the top surface on its bottom surface, and the mounting hole is located below the second lens; The prism is located inside the mounting hole.

10. The optical element driving mechanism according to claim 8, characterized in that, The optical element driving mechanism also includes multiple suspension wires; The bottom ends of the multiple suspension wires are connected to the base, and the top ends are connected to the frame assembly.

11. The optical element driving mechanism according to claim 10, characterized in that, The frame assembly also includes a spring, which is connected to the frame; The tips of the plurality of suspension wires are connected to the spring.

12. The optical element driving mechanism according to claim 11, characterized in that, The top surface of the base is provided with multiple grooves; The frame is provided with multiple clearance holes; The bottom ends of the multiple suspension wires are connected to the bottom wall of the groove, and the top ends pass through the multiple clearance holes and are connected to the spring.

13. The optical element driving mechanism according to claim 11, characterized in that, The framework components also include: A first coil group, the first coil group being connected to the frame; The first magnet group is connected to the carrier and cooperates with the first coil group to drive the carrier to move in the vertical direction; A first circuit board is attached to the outside of the first coil group and electrically connected to the first coil group.

14. The optical element driving mechanism according to claim 13, characterized in that, The base has built-in wiring; The optical element driving mechanism further includes: A second circuit board is stacked on the top surface of the base and electrically connected to the built-in circuitry. A second coil group, the second coil group being electrically connected to the second circuit board; and The second magnet group is connected to the frame and cooperates with the second coil group to drive the frame to move in the horizontal direction.

15. The optical element driving mechanism according to claim 14, characterized in that, The bottom end of the suspension wire is electrically connected to the built-in circuit. The reed is electrically connected to the first circuit board.

16. The optical element driving mechanism according to claim 10, characterized in that, The frame and the base are rotatably connected.

17. The optical element driving mechanism according to claim 10, characterized in that, The prism has a trapezoidal cross-section along the vertical direction, and the top surface dimension of the prism is larger than the bottom surface dimension.

18. The optical element driving mechanism according to claim 10, characterized in that, The optical element driving mechanism also includes a housing, which covers the outside of the frame assembly and is connected to the base at its bottom end; The outer casing is provided with through holes; The framework includes: Circular frame, and Mounting bracket, which is annular and mounted on the top surface of the annular frame, with its top extending through the through hole to the outside of the housing; The first lens is mounted inside the ring of the mounting bracket.

Images