Optical element drive mechanism and its frame assembly

Abstract

This utility model discloses an optical element driving mechanism and its frame assembly. The optical element driving mechanism includes a base and a frame assembly, with a prism mounted on the base. The frame assembly is located above the base, and the image stabilization frame is movable horizontally. The frame assembly includes an image stabilization frame and a carrier, with a first lens mounted on the bottom of the image stabilization frame. The carrier is vertically movable and connected to the image stabilization frame, and the carrier is used to mount a second lens. The second lens and the first lens are coaxially arranged, and light enters the second lens and is projected onto 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, which includes:

[0007] A stabilization frame, wherein a first lens is mounted at the bottom of the stabilization frame;

[0008] The carrier is movable and connected to the image stabilization frame in a vertical direction, and the carrier is used to mount a second lens. The second lens and the first lens are coaxially arranged, and light enters the second lens and is projected onto the first lens.

[0009] In one implementation, the image stabilization frame includes:

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

[0011] A first lens mounting frame is connected to the bottom of the frame and its bottom end does not extend beyond the bottom of the frame in one embodiment. The bottom surface of the frame is provided with multiple mounting slots.

[0012] The image stabilization frame also includes a first mounting plate, which surrounds the outside of the first lens mounting frame and is connected to the top wall of the mounting groove.

[0013] In one implementation, the depths of the multiple mounting slots are different;

[0014] The anti-shake frame also includes a mounting component, one end of which is connected to the first mounting plate and the other end extends in a vertical direction;

[0015] A portion of the first mounting plate is connected to the top wall of a portion of the mounting slot, and another portion is connected to the top wall of another mounting slot via the mounting member.

[0016] In one implementation, a first coil group is provided on one side of the frame;

[0017] There is a gap between the first mounting plate and the side of the frame where the first coil group is located;

[0018] The carrier includes:

[0019] The second lens mounting frame has its bottom end located outside the first lens mounting frame;

[0020] A convex plate, the top end of which is connected to the second lens mounting frame, and the bottom end of which extends downward through the gap;

[0021] The first magnet group is connected to the convex plate and is disposed opposite to the first coil group. The first magnet group and the first coil group cooperate to drive the carrier to move in the vertical direction.

[0022] In one embodiment, the frame assembly further includes two guide shafts, the axes of which extend vertically and are rotatably connected to the frame;

[0023] The frame is also provided with a receiving groove, which is located between the two guide shafts;

[0024] The first coil group is located within the receiving groove;

[0025] The carrier is provided with two guide grooves, and the two guide grooves respectively accommodate the two guide shafts.

[0026] In one implementation, the optical element driving mechanism includes:

[0027] A base on which a prism is mounted;

[0028] The aforementioned frame assembly is located above the base, and the anti-shake frame is movable in the horizontal direction.

[0029] In one embodiment, the bottom surface of the base is provided with a mounting hole recessed towards the top surface, and the mounting hole is located below the second lens;

[0030] The prism is located inside the mounting hole.

[0031] In one implementation, the optical element driving mechanism further includes multiple suspension wires;

[0032] The bottom ends of the multiple suspension wires are connected to the base, and the top ends are connected to the anti-shake frame.

[0033] In one implementation, the frame assembly further includes a reed connected to the stabilization frame;

[0034] The tips of the plurality of suspension wires are connected to the spring.

[0035] In one embodiment, the top surface of the base is provided with multiple grooves;

[0036] The anti-shake frame is provided with multiple clearance holes;

[0037] 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.

[0038] In one implementation, the framework component further includes:

[0039] A first coil group, which is connected to the image stabilization frame;

[0040] 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;

[0041] A first circuit board is attached to the outside of the first coil group and electrically connected to the first coil group.

[0042] In one implementation, the base has built-in wiring;

[0043] The optical element driving mechanism further includes:

[0044] A second circuit board is stacked on the top surface of the base and electrically connected to the built-in circuitry.

[0045] A second coil group, the second coil group being electrically connected to the second circuit board; and

[0046] The second magnet group is connected to the anti-shake frame and cooperates with the second coil group to drive the frame to move in the horizontal direction.

[0047] In one implementation, the bottom end of the suspension wire is electrically connected to the built-in circuitry;

[0048] The reed is electrically connected to the first circuit board.

[0049] 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;

[0050] The outer casing is provided with through holes;

[0051] The carrier includes:

[0052] The second lens mounting frame has its bottom end located outside the first lens mounting frame, and its top end extending through the through hole to the outside of the housing;

[0053] A convex plate, the top of which is connected to the second lens mounting frame, and the bottom of which extends downward;

[0054] The first magnet group is connected to the convex plate.

[0055] In one implementation, the carrier includes:

[0056] A second mounting plate surrounds the second lens mounting frame and is located on the top surface of the first mounting plate;

[0057] Multiple anti-collision gels are located on the top surface of the second mounting plate. Attached Figure Description

[0058] Figure 1 Figure 2 and Figure 3 This is an exploded view of the optical element driving mechanism of one embodiment of the present invention.

[0059] Figure 4 yes Figure 1 Exploded view of the base and the second circuit board in the embodiment shown.

[0060] Figure 5 and Figure 6 yes Figure 1 Assembly diagram of the frame components in the illustrated embodiment.

[0061] Figure 7 , Figure 8 and Figure 9 They are Figure 5 An exploded view of the frame components in the illustrated embodiment.

[0062] Figure 10 yes Figure 1 A perspective view of the image stabilization frame in the illustrated embodiment.

[0063] Figure 11 yes Figure 1 An exploded view of the frame in the illustrated embodiment.

[0064] Figure 12 This is a perspective view of the built-in metal frame of one embodiment of the present invention.

[0065] Figure 13 yes Figure 1 Assembly diagram of the optical element driving mechanism in the illustrated embodiment.

[0066] Figure 14 yes Figure 13 A cross-sectional view of the optical element mechanism along line AA in the embodiment shown.

[0067] Reference numerals: 100, Optical element driving mechanism; 1, Base; 11, Mounting hole; 12, Front opening; 13, Groove; 15, Suspension wire; 2, Image stabilization frame; 21, Frame; 211, Clearance groove; 212, Clearance hole; 213, Receiving groove; 215, First mounting groove; 216, Second mounting groove; 22, First lens mounting frame; 23, First mounting plate; 231, Mounting component; 24, Guide shaft; 25, First coil group; 26, First circuit board; 27, Adsorption metal sheet; 28, Built-in metal frame; 29, Second magnet group; 3, Carrier; 31, Second lens mounting frame; 32, Second mounting plate; 33, Protruding plate; 34, First magnet group; 35, Anti-collision colloid; 36, Guide groove; 4, Spring; 5, Housing; 51, Through hole; 6, Second circuit board; 7, Coil plate; Detailed Implementation

[0068] 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.

[0069] 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”.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] The base 1 has a mounting hole 11 recessed on its bottom surface and facing the 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 a prism.

[0076] The prism has front and rear sides, a top surface, and a bottom surface. The prism has a trapezoidal cross-section along the vertical direction, and the front and rear sides are inclined surfaces for reflecting light. The top surface of the prism is larger than the bottom surface. The prism is fixedly installed in the mounting hole 11, and the front side of the prism extends from the front opening 12 of the mounting hole 11 to the outside of the base 1.

[0077] The base 1 has built-in wiring for electrical connection to an external power source.

[0078] 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.

[0079] 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.

[0080] The frame assembly includes a stabilization frame 2, a carrier 3, and four springs 4. The stabilization frame 2 is used to mount the first lens and includes a frame 21 and a first lens mounting frame 22. The frame 21 is rectangular and has a light-blocking hole. The frame 21 is suspended above the base 1.

[0081] The four reeds 4 are located at the four corners of the frame 21 and are connected to the frame 21.

[0082] The four corners of the frame 21 are also provided with clearance grooves 211 and clearance holes 212. The clearance grooves 211 are located below the springs 4 to facilitate the movement of the springs 4. The clearance holes 212 are formed by the bottom wall of the clearance grooves 211 recessed into the bottom wall of the frame 21. The top ends of the four suspension wires 15 pass through the four clearance holes 212 and are connected to the four springs 4. The four suspension wires 15 support the frame 21 suspended above the base 1. After the frame 21 moves, the four suspension wires 15 can drive the frame 21 to return to its original position.

[0083] The first lens mounting frame 22 is also annular and located at the bottom of the frame 21. The first lens mounting frame 22 is used to mount the first lens. The first lens mounting frame 22 is fixedly connected to the bottom of the frame 21 via a first mounting plate 23. Specifically, the first mounting plate 23 is a plate-shaped structure that surrounds the radially outer side of the first lens mounting frame 22 and is connected to the bottom surface of the frame 21.

[0084] In the embodiment shown in the figure, the bottom surface of the frame 21 is provided with multiple mounting slots; among the multiple mounting slots, some mounting slots have a greater depth, and these mounting slots are defined as the first mounting slot 215, while the other part has a shallower depth, and these mounting slots are defined as the second mounting slot 216.

[0085] like Figure 6 As shown, the bottom surface of the frame 21 faces upward. The first mounting groove 215 is formed by a recess in the bottom wall of one side of the frame 21. One side of the first mounting plate 23 is attached to the top wall of the first mounting groove 215 and connected to the top wall of the first mounting groove 215. Two second mounting grooves 216 are located at the two corners of the frame 21. The two corners of the first mounting plate 23 are respectively connected to the top walls of the two second mounting grooves 216 by two mounting members 231. The top end of the mounting member 231 is connected to the first mounting plate 23, and the bottom end extends downward and bends to the bottom wall of the second mounting groove 216. The bottom end of the mounting member 231 can be connected to the top wall of the first mounting groove 215 by welding.

[0086] In addition, one side of the first mounting plate 23 and one side of the frame 21 are spaced apart to form a gap space.

[0087] The carrier 3 is ring-shaped and located within the frame 21, above the first lens mounting frame 22 and the first 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 are aligned vertically. External light enters the second lens and is then projected onto the first lens, then onto the top surface of the prism. After passing through the top surface of the prism, it is refracted to the front and rear sides, and then refracted again to the bottom surface of the prism for focusing, forming stable light. The light can be turned 180 degrees through the prism before entering the image chip on the motor-mounted camera module, achieving the imaging effect. This design reduces the overall thickness of the camera, making mobile phones or other smart devices thinner.

[0088] Since the first lens can move horizontally along the frame 21, external light is projected from the second lens to the first lens. As the first lens moves horizontally, it can receive a larger range of light projected by the second lens.

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

[0090] The housing 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 housing 5 is provided with a through hole 51, through which light can be projected to the second lens and then into the first lens.

[0091] exist Figure 1-10 In the embodiment shown, a receiving groove 213 is provided on one side of the frame 21. The receiving groove 213 is formed by a recess in the top surface of the frame 21. A first coil group 25, a first circuit board 26 and an adsorbent metal sheet 27 are installed in the receiving 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.

[0092] Furthermore, the aforementioned space is formed by the spacer space between the side of the receiving groove 213 and the first mounting plate 23.

[0093] 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.

[0094] The carrier 3 is provided with a first magnet group 34 on its radial outer side. The first magnet group 34 is aligned with the first coil group 25 in the horizontal direction and can drive the carrier 3 to move in the vertical direction in cooperation with the first coil group 25.

[0095] The first magnet group 34 is also aligned with the adsorption metal sheet 27 to adsorb the first magnet group 34, thereby adsorbing the carrier 3 to the side of the frame 21 where the first coil group 25 is located.

[0096] In the embodiment shown in the figure, the carrier 3 includes a second lens mounting frame 31, a protruding plate 33, and a second mounting plate 32. The second lens mounting frame 31 is used to mount the second lens. The bottom end of the second lens mounting frame 31 is located outside the first lens mounting frame 22, and the top extends from the through hole 51 of the housing 5 to the outside of the housing 5. The through hole 51 is used to avoid the second lens mounting frame 31, allowing light to directly enter the first lens. In other embodiments, the second lens mounting frame 31 may also be located inside the housing 5.

[0097] The top end of the protruding plate 33 is connected to one side of the second lens mounting frame 31, and the bottom end extends downward through the gap between the first mounting plate 23 and the frame 21. The first magnet group 34 is connected to the protruding plate 33 and is arranged opposite to the first coil group 25. The first magnet group 34 and the first coil group 25 cooperate to drive the carrier 3 to move in the vertical direction.

[0098] The first magnet group 34 and the first coil group 25 are located lower relative to the second lens mounting frame 31. The top of the second lens mounting frame 31 protrudes from the top surface of the frame 21 and extends outward from the through hole 51 of the housing 5. The second lens mounting frame 31 can mount multiple second lenses and can extend vertically outside the housing 5 without affecting the overall thickness of the housing 5.

[0099] In addition, the frame 21 is provided with two rolling guide shafts 24 on one side of the receiving 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 receiving groove 213. The carrier 3 is provided with two recessed guide grooves 36 on the side facing the two guide shafts 24. The two guide grooves 36 extend vertically and respectively accommodate the two guide shafts 24. When the carrier 3 moves vertically, it touches the two guide shafts 24 and rolls with the two guide shafts 24, avoiding direct contact with the frame 21. The guide shafts 24 also play a guiding role for the carrier 3.

[0100] The second mounting plate 32 is a plate that surrounds the second lens mounting frame 31 and is located on the bottom surface of the first mounting plate 23. The top surface of the second mounting plate 32 is provided with anti-collision colloid 35. When the carrier 3 moves in the vertical direction, the anti-collision colloid 35 can buffer the force of the second mounting plate 32 touching the outer shell 5.

[0101] The frame 21 also has an internal metal frame 28, which is ring-shaped and embedded within the frame 21. The internal metal frame 28 is bent multiple times to enhance the strength of the frame 21. The internal metal frame 28 is electrically connected to the spring 4 and the first circuit board 26.

[0102] The 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 6 and a coil plate 7. The second circuit board 6 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 7 is located on the top surface of the second circuit board 6 and is provided with a second coil group inside. The second coil group and the second magnet group 29 cooperate to drive the frame 21 to move in the horizontal direction, so as to play a role in anti-shaking.

[0103] In addition, an adsorption metal sheet is embedded in the base 1. The adsorption metal sheet generates an adsorption force between itself and the second magnet group 29 at the bottom of the frame 21, causing the bottom of the frame 21 to abut against the ball bearing. 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 6. This chip is used to control the operation of the first coil group 25 and the second coil group.

[0104] The second circuit board 6 is equipped with a position sensor, which works in conjunction with the second magnet group 29 at the bottom of the frame 21 to realize the position monitoring of the frame 21.

[0105] 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.

[0106] 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.

[0107] 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 frame assembly, characterized by The framework components include: A stabilization frame, wherein a first lens is mounted at the bottom of the stabilization frame; The carrier is movable and connected to the image stabilization frame in a vertical direction, and the carrier is used to mount a second lens. The second lens and the first lens are coaxially arranged, and light enters the second lens and is projected onto the first lens.

2. The frame assembly of claim 1, wherein, The image stabilization frame includes: A frame, wherein the frame is ring-shaped; and A first lens mounting frame, which is connected to the bottom of the frame and whose bottom end does not extend beyond the bottom end of the frame, is used to mount the first lens.

3. The frame assembly of claim 2, wherein, The bottom surface of the frame is provided with multiple mounting slots; The image stabilization frame also includes a first mounting plate, which surrounds the outside of the first lens mounting frame and is connected to the top wall of the mounting groove.

4. The frame assembly of claim 3, wherein, The depths of the various mounting slots are different; The anti-shake frame also includes a mounting component, one end of which is connected to the first mounting plate and the other end extends in a vertical direction; A portion of the first mounting plate is connected to the top wall of a portion of the mounting slot, and another portion is connected to the top wall of another mounting slot via the mounting member.

5. The frame assembly of claim 3, wherein, A first coil group is provided on one side of the frame; There is a gap between the first mounting plate and the side of the frame where the first coil group is located; The carrier includes: The second lens mounting frame has its bottom end located outside the first lens mounting frame; A convex plate, the top end of which is connected to the second lens mounting frame, and the bottom end of which extends downward through the gap; The first magnet group is connected to the convex plate and is disposed opposite to the first coil group. The first magnet group and the first coil group cooperate to drive the carrier to move in the vertical direction.

6. The frame component according to claim 5, characterized in that, The frame assembly also includes two guide shafts, the axes of which extend vertically and are rotatably connected to the frame; The frame is also provided with a receiving groove, which is located between the two guide shafts; The first coil group is located within the receiving groove; The carrier is provided with two guide grooves, and the two guide grooves respectively accommodate the two guide shafts.

7. An optical element driving mechanism characterized by comprising: The optical element driving mechanism includes: A base on which a prism is mounted; The frame assembly of claim 3, wherein the frame assembly is located above the base, and the anti-shake frame is movable in a horizontal direction.

8. The optical element drive mechanism according to claim 7, wherein The base has a mounting hole recessed towards 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.

9. The optical element drive mechanism according to claim 7, wherein 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 anti-shake frame.

10. The optical element drive mechanism according to claim 9, wherein The frame assembly also includes a spring, which is connected to the image stabilization frame; The tips of the plurality of suspension wires are connected to the spring.

11. The optical element driving mechanism according to claim 10, characterized in that, The top surface of the base is provided with multiple grooves; The anti-shake 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.

12. The optical element drive mechanism according to claim 10, wherein The framework components also include: A first coil group, which is connected to the image stabilization 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.

13. The optical element drive mechanism according to claim 12, wherein 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 anti-shake frame and cooperates with the second coil group to drive the frame to move in the horizontal direction.

14. The optical element drive mechanism according to claim 13, wherein 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.

15. The optical element drive mechanism according to claim 10, wherein 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 carrier includes: The second lens mounting frame has its bottom end located outside the first lens mounting frame, and its top end extending through the through hole to the outside of the housing; A convex plate, the top of which is connected to the second lens mounting frame, and the bottom of which extends downward; The first magnet group is connected to the convex plate.

16. The optical element drive mechanism according to claim 15, wherein The carrier includes: A second mounting plate surrounds the second lens mounting frame and is located on the top surface of the first mounting plate; Multiple anti-collision gels are located on the top surface of the second mounting plate.

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