Optical element driving mechanism

Abstract

An optical element driving mechanism is provided. The optical element driving mechanism comprises a movable part, a fixed part and a driving assembly. The movable part is used for connecting an optical element. The movable part can move relative to the fixed part. The driving assembly is used for driving the movable part to move.

Description

Technical Field

[0001] The present invention relates to an optical element driving mechanism, and in particular to an optical element driving mechanism having a movable part and a stabilizing component. Background Art

[0002] With the development of technology, many electronic devices (such as computers or tablets) now have the function of taking photos or recording videos. The use of these electronic devices is becoming more and more common. In addition to developing more stable and better optical quality, they are also moving towards convenient and lightweight designs to provide users with more choices.

[0003] However, when an optical element with a long focal length (such as a lens) is required to be disposed in the aforementioned electronic device, the thickness of the electronic device will increase, which is not conducive to the thinness and stability of the electronic device. In view of this, how to design an optical system that can make the electronic device thinner and more stable has become an important issue. Summary of the invention

[0004] The terms of embodiment and similar terms (e.g., implementation, configuration, features, examples, and options) are intended to broadly refer to all of the subject matter of the present invention and the following claims. Several statements containing these terms should be understood as not limiting the subject matter described herein or limiting the meaning or scope of the following claims. The embodiments of the present invention covered herein are defined by the following claims, rather than this content. This content is a high-level overview of the various features of the present invention and introduces some of the concepts described in more detail in the following implementation paragraphs. This content is not intended to identify the key or essential features of the subject matter of the claims, nor is it intended to be used independently to determine the scope of the subject matter of the claims. This subject matter should be understood by reference to appropriate portions of the complete specification of the present invention, any or all drawings, and each claim.

[0005] According to certain features of the present disclosure, an optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion, a fixed portion, and a driving assembly. The movable portion is used to connect an optical element. The movable portion can move relative to the fixed portion. The driving assembly is used to drive the movable portion to move.

[0006] According to certain features of the present disclosure, the optical element driving mechanism further includes an aperture assembly having a plurality of blades. The plurality of blades form an opening, and an incident light enters the optical element through the opening. The fixing portion includes an outer cover and a buffer element. The outer cover at least partially covers the aperture assembly and the optical element. The buffer element is disposed between the outer cover and the aperture assembly.

[0007] The above summary of the invention is not intended to present every embodiment or every feature of the present invention. Rather, the foregoing summary of the invention merely provides examples of some of the novel features and characteristics set forth herein. The above features and advantages and other features and advantages of the present invention will become apparent from the following detailed description of representative embodiments and modes for practicing the present invention when taken in conjunction with the accompanying drawings and the appended claims. Additional features of the present invention will be apparent to those having ordinary knowledge in the art in view of the detailed description of various embodiments provided below with reference to the accompanying drawings, symbolically briefly illustrated. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The present invention and its advantages will be better understood from the following description of exemplary embodiments in conjunction with reference to the accompanying drawings, which depict only exemplary embodiments and therefore should not be considered as limiting the various embodiments or claims.

[0009] Figure 1 A three-dimensional diagram of an optical element driving mechanism and an optical element according to certain features of the present disclosure.

[0010] Figure 2 An exploded perspective view of an optical element driving mechanism and an optical element according to certain features of the present disclosure.

[0011] Figure 3 According to certain features of the present disclosure, the optical element driving mechanism and the optical element are Figure 1 A cross-sectional view of line AA.

[0012] Figure 4 A top view of an optical element driving mechanism and an optical element according to certain features of the present disclosure, wherein the blades are located in a first position, and for illustrative purposes, the upper cover and the frame are shown in phantom lines.

[0013] Figure 5 A top view of an optical element driving mechanism and an optical element, wherein the blades are in a second position, according to certain features of the present disclosure. For illustrative purposes, the top cover and the frame are shown in phantom.

[0014] Figure 6 A bottom view of an optical element driving mechanism and an optical element according to certain features of the present disclosure, wherein the base and the movable portion are shown in phantom lines for illustrative purposes.

[0015] Figure 7 A side view of an optical element drive mechanism and an optical element, with the frame and coil removed for illustrative purposes, in accordance with certain features of the present disclosure.

[0016] Figure 8A side view of a base and electronic components of an optical element drive mechanism according to certain features of the present disclosure, with the base shown in phantom for illustrative purposes.

[0017] The reference numerals are described as follows:

[0018] 1: Optical element drive mechanism

[0019] 10: Optical components

[0020] 100: Activities Department

[0021] 100-b: convex column

[0022] 200: Fixed part

[0023] 210: Upper cover

[0024] 220: Shading element

[0025] 230: Framework

[0026] 230-a: convex column

[0027] 240: Base

[0028] 242: Main body

[0029] 244: Protruding structure

[0030] 246: Bottom

[0031] 248: Slot

[0032] 300: Drive components

[0033] 310: First magnetic element

[0034] 320: Coil

[0035] 400: Aperture assembly

[0036] 410: Blade

[0037] 410-a: Hole

[0038] 410-b: Long hole

[0039] 420: Opening

[0040] 500: Booting Components

[0041] 511, 512, 513, 514: Guide elements

[0042] 600: Stable components

[0043] 610: First magnetic conductive element

[0044] 620: Second magnetic conductive element

[0045] 630: Second magnetic element

[0046] 700: Sensing components

[0047] 710: First Electronic Components

[0048] 720: Second electronic component

[0049] 800: Electronic components

[0050] 810: First external end

[0051] 811: Groove

[0052] 820, 822: Second external terminal

[0053] 830: Third electronic component

[0054] L: incident direction

[0055] T1, T2: thickness

[0056] d1, d2, d3, d4: distance DETAILED DESCRIPTION

[0057] Various embodiments are described with reference to the accompanying drawings, and similar reference symbols are used to designate similar or equivalent elements throughout the accompanying drawings. The accompanying drawings are not drawn to scale, and the accompanying drawings are provided only to show the characteristics and features of the present disclosure. It should be understood that many specific details, relationships and methods are set forth to provide a comprehensive understanding. However, it will be easy for those with ordinary knowledge in this field to think that various embodiments can be practiced without one or more specific details or in other methods. In some cases, for illustrative purposes, known structures or operations are not shown in detail. Various embodiments are not limited to the display order of actions or events, as some actions can occur in different orders and / or simultaneously with other actions or events. In addition, not all of the actions or events shown are required for implementing certain characteristics and features of the present disclosure.

[0058] For purposes of this embodiment, the singular includes the plural and vice versa unless expressly stated otherwise. The term "including" means "including, but not limited to." In addition, approximate words such as "about," "almost," "substantially," and "approximately," and the like, may mean, for example, "at," "near," "nearly at," "within 3-5% of," "within acceptable manufacturing tolerances," or any logical combination thereof. Additionally, the terms "vertical" or "horizontal" are intended to further include "within 3-5%" of the vertical or horizontal direction, respectively. In addition, directional words such as "top," "bottom," "left," "right," "above," and "below" are intended to be relative to equivalent directions depicted in reference illustrations; to be understood from the context of the referenced object or element, such as from a common position of the object or element; or other descriptions thereof.

[0059] It is understood that, although the terms "first", "second", etc. may be used herein to describe various elements, layers and / or parts, these elements, layers and / or parts should not be limited by these terms, and these terms are only used to distinguish different elements, layers and / or parts. Therefore, a first element, layer and / or part discussed below may be referred to as a second element, layer and / or part without departing from the teachings of some embodiments of the present disclosure. In addition, for the sake of brevity, the terms "first", "second", etc. may not be used in the specification to distinguish different elements. Without violating the scope defined by the attached claims, the first element and / or second element recorded in the claims may be interpreted as any element that conforms to the description in the specification.

[0060] It should be noted that the technical solutions provided in the following different embodiments can be replaced, combined or mixed with each other to form another embodiment without violating the spirit of the present disclosure.

[0061] The present disclosure relates to an optical element driving mechanism, which has a driving component and a guiding component, driving a movable part and an optical element to move, thereby adjusting the photographic imaging of the optical element driving mechanism to meet different photographic requirements.

[0062] First please see Figure 1 to Figure 2 , Figure 1 1 is a perspective view of an optical element driving mechanism 1 and an optical element 10 according to certain features of the present disclosure. Figure 2 An exploded perspective view of an optical element driving mechanism 1 and an optical element 10 according to certain features of the present disclosure.

[0063] The optical element driving mechanism 1 includes a movable part 100, a fixed part 200, a driving assembly 300, an aperture assembly 400, a guiding assembly 500, a stabilizing assembly 600, a sensing assembly 700, and an electronic assembly 800. The movable part 100 is connected to the optical element 10, and the optical element 10 can be, for example, an optical lens. The movable part 100 can move relative to the fixed part 200. The driving assembly 300 drives the movable part 100 to move. Incident light from the outside passes through the optical element driving mechanism 1 along an incident direction L to reach the optical element 10.

[0064] The optical element 10 is disposed on a lens driving device (not shown), and the lens driving device achieves the functions of auto focus (AF) and optical image stabilization (OIS). The lens driving device has a plurality of driving circuit parts (not shown) for driving the lens driving device.

[0065] The fixing portion 200 includes a top cover 210 , a light shielding element 220 , a frame 230 , and a base 240 .

[0066] The upper cover 210 is movably disposed on the aperture assembly 400. The aperture assembly 400 is located between the shading element 220 and the upper cover 210. The upper cover 210 at least partially covers the aperture assembly 400 and the optical element 10, thereby protecting the components in the optical element driving mechanism 1 from external impact. The shading element 220 can be a light-absorbing material, such as SOMA.

[0067] See you next Figure 3 . Figure 3 According to certain features of the present disclosure, the optical element driving mechanism 1 and the optical element 10 are Figure 1 The base 240 has a protruding structure 244, a main body 242, and a bottom surface 246. The thickness T1 of the main body 242 is less than the thickness T2 of the protruding structure 244. The bottom surface 246 has a groove 248 (shown in FIG. Figure 3 as well as Figure 6 ), a first magnetic conductive element 610 (which will be described below) accommodating the stabilizing element 600 Figure 3 as well as Figure 6 further described).

[0068] When viewed along the incident direction L of the incident light, the frame 230 , the movable portion 100 , the driving component 300 , the sensing component 700 , and the base 240 are arranged in sequence.

[0069] Please continue to refer to Figure 2 The driving assembly 300 includes a first magnetic element 310 and a coil 320 .

[0070] The first magnetic element 310 is disposed on the movable portion 100 . The coil 320 is disposed on the protruding structure 244 of the base 240 . The coil 320 has a trapezoidal structure, corresponding to the arc trapezoidal structure of the first magnetic element 310 .

[0071] By means of the electromagnetic driving force generated between the first magnetic element 310 and the coil 320, the first magnetic element 310 moves relative to the coil 320. Thus, the movable part 100 moves relative to the base 240, and the movable part 100 drives the aperture assembly 400 to move. Therefore, by means of the electromagnetic driving force generated between the first magnetic element 310 and the coil 320, the movable part 100 can be driven to drive the aperture assembly 400 to move relative to the base 240.

[0072] The aperture assembly 400 has a plurality of blades 410. In this embodiment, there are six blades 410. The six blades 410 form an opening 420, and the incident light enters the optical element 10 through the opening 420.

[0073] The guide assembly 500 includes a plurality of guide elements. In the present embodiment, there are four guide elements 511, 512, 513, 514, which are disposed between the movable portion 100 and the frame 230, adjacent to the first magnetic element 310. The movable portion 100 is connected to the frame 230 via the four guide elements 511, 512, 513, 514. The guide elements 511, 512, 513, 514 movably connect the frame 230 and the movable portion 100.

[0074] When the movable part 100 is driven by the driving assembly 300 to move, the guide elements 511 , 512 , 513 , 514 roll between the frame 230 and the movable part 100 , so that the movable part 100 moves smoothly relative to the frame 230 .

[0075] The following is relative to Figures 4 to 5 The movement of the movable portion 100 relative to the frame 230 is described. Figure 4 According to certain features of the present disclosure, the optical element driving mechanism 1 and the optical element 10 are shown in top view, wherein the blade 410 is located at a first position, and for illustrative purposes, the upper cover 210 and the frame 230 are shown in dotted lines. Figure 5 According to certain features of the present disclosure, the optical element driving mechanism 1 and the optical element 10 are shown in top view, wherein the blade 410 is located at a second position, and for illustrative purposes, the upper cover 210 and the frame 230 are shown in dotted lines.

[0076] The movable part 100 is connected to the six blades 410. Each of the six blades 410 has a hole 410-a and a slot 410-b for connecting the movable part 100 and the frame 230, as will be further explained below.

[0077] The movable part 100 and the blade 410 can move relative to the frame 230. The movable part 100 has a plurality of protrusions 100-b, which penetrate into the long hole 410-b of the blade 410 and can move in the long hole 410-b.

[0078] The frame 230 has a plurality of bosses 230-a, which penetrate into the holes 410-a of the blade 410 and can rotate in the holes 410-a. The blade 410 is connected to the movable part 100 and the frame 230 via the bosses 100-b and the bosses 230-a and the long holes 410-b and the holes 410-a.

[0079] When the movable part 100 is driven by the driving assembly 300 to move, the plurality of bosses 100-b of the movable part 100 penetrate into the long hole 410-b of the blade 410 and move in the long hole 410-b, and the plurality of bosses 230-a of the frame 230 penetrate into the hole 410-a of the blade 410 and rotate in the hole 410-a, thereby driving the movement of the blade 410. Through the movement of the blade 410, the size of the opening 420 formed by the blade 410 can be adjusted.

[0080] exist Figure 4 In the first position shown, the opening 420 formed by the blades 410 is larger, so that a larger amount of incident light can pass through the opening 420 to reach the optical element 10 in this position.

[0081] exist Figure 5 In the second position shown, the opening 420 formed by the blades 410 is relatively large. Figure 4 The first position shown is small, so the second position can cause the amount of incident light reaching the optical element 10 through the opening 420 to be less than the first position.

[0082] Please refer to the following Figure 3 as well as Figure 6 . Figure 6 The bottom view of the optical element driving mechanism 1 and the optical element 10 is shown in phantom for illustrative purposes. The stabilizing assembly 600 includes a first magnetic conductive element 610 , a second magnetic conductive element 620 , and a second magnetic element 630 .

[0083] The first magnetic conductive element 610 corresponds to the first magnetic element 310 and is disposed in the groove 248 of the base 240. The second magnetic conductive element 620 is disposed on the base 240 and corresponds to the second magnetic element 630. The second magnetic element 630 is disposed on the opposite side of the first magnetic element 310 of the movable part 100. The size of the second magnetic element 630 is different from that of the first magnetic element 310. In this embodiment, the size of the second magnetic element 630 is smaller than that of the first magnetic element 310. The second magnetic element 630 provides additional magnetic attraction for the movable part 100 to stabilize the structure.

[0084] The first magnetic conductive element 610 and the first magnetic element 310 provide the movable portion 100 with a magnetic attraction along the incident direction L and toward the guide assembly 500 , so that the movable portion 100 rests on the guide assembly 500 , thereby being able to stably move relative to the frame 230 .

[0085] The second conductive element 620 and the second magnetic element 630 provide a magnetic attraction force for the movable part 100 along the incident direction L. This moment is balanced with the magnetic attraction moment of the first conductive element 610 and the first magnetic element 310 to stabilize the structures of the movable part 100 and the fixed part 200 .

[0086] The distance d1 between the first magnetic conductive element 610 and the bottom surface 246 is different from the distance d2 between the second magnetic conductive element 620 and the bottom surface 246. The first magnetic conductive element 610 includes a first section, a second section and a third section. The second section and the third section are respectively formed at two ends of the first section. The distance between the first section of the first magnetic conductive element 610 and the incident direction L is greater than the distance between the second section and the third section of the first magnetic conductive element 610 and the incident direction L.

[0087] When observed along the incident direction L, the center of the first magnetic element 310 does not overlap with the center of the first magnetic conductive element 610, the first section of the first magnetic conductive element 610 does not overlap with the first magnetic element 310, and the second section and the third section of the first magnetic conductive element 610 at least partially overlap with the first magnetic element 310, and the center of the second magnetic element 630 overlaps with the center of the second magnetic conductive element 620.

[0088] Please refer to the following Figure 7 . Figure 7 A side view of the optical element driving mechanism 1 and the optical element 10 according to certain features of the present disclosure, with the frame 230 and the coil 320 removed for illustrative purposes.

[0089] The sensing component 700 has a first electronic component 710 and a second electronic component 720 . The first electronic component 710 is disposed on the protruding structure 244 , and the second electronic component 720 is disposed on the main body 242 .

[0090] The distance d3 between the first electronic component 710 and the bottom surface 246 of the base 240 is different from the distance d4 between the second electronic component 720 and the bottom surface 246. The distance d3 between the first electronic component 710 and the bottom surface 246 of the base 240 is smaller, so that the sensing signal of the first electronic component 710 when sensing the first magnetic element 310 is more stable.

[0091] Please refer to the following Figure 2 as well as Figure 8 . Figure 8A side view of a base 240 and an electronic assembly 800 of an optical element driving mechanism 1 according to certain features of the present disclosure, wherein the base 240 is shown in phantom for illustrative purposes.

[0092] The electronic component 800 is disposed on the base 240 and is electrically connected to the driving component 300. The electronic component 800 has a plurality of first external ends 810, a plurality of second external ends 820, 822, and a plurality of third electronic components 830. The third electronic components 830 are connected to the second external ends 820.

[0093] The first outer end 810 protrudes relative to the base 240. The first outer end 810 has a groove 811, so that when the first outer end 810 is connected to an external circuit (for example, a driving circuit portion of a lens driving device), the first outer end 810 is connected to a metal element M1, and the metal element M1 extends in the direction of the incident direction L in the groove 811. The groove 811 allows the metal element M1 to be more easily arranged and is not easily broken by excessive bending.

[0094] The second outer ends 820 and 822 protrude relative to the base 240 and are connected to an external circuit (for example, a driving circuit portion of the lens driving device). In some embodiments, the second outer end 820 can extend in the direction of the incident direction L like the second outer end 822 (see Figure 7 as well as Figure 8 As shown, the second outer end 822 is configured to extend in the direction of the incident direction L). The required extension length and direction of the second outer ends 820 and 822 can be configured according to the requirements of the connected device.

[0095] In this way, it is convenient to arrange the optical element driving mechanism 1 on the lens driving device. Specifically, in the present embodiment, the lens driving device equipped with the optical element 10 does not need to design additional circuits for driving the movable part 100 and the aperture assembly 400, which complicates the structural design of the lens driving device. At the same time, in conjunction with the first external end 810, the second external ends 820, 822, and the third electronic component 830 of the electronic component 800 of the optical element driving mechanism 1, the driving circuit part of the lens driving device can also be arranged on the base 240, which can make the circuit design of controlling the optical element driving mechanism 1 and the lens driving device more convenient and simple.

[0096] In summary, the present invention provides an optical element driving mechanism, which includes a movable part, a fixed part, a driving assembly, an aperture assembly, and a guide assembly. The movement of the driving assembly drives the movable part to move relative to the fixed part. Thereby, the position of the blades can be adjusted, and the amount of incident light reaching the optical element can be adjusted to adapt to different photographic needs and provide more stable optical quality. At the same time, through the design of the outer frame and the electronic components, the optical element driving mechanism can be more easily set on the lens driving device, so that the structural design of the movable part and the aperture assembly of the optical element driving mechanism will not be affected by the lens driving device, but can be used with lens driving devices of different sizes, and the circuit design of driving the movable part and the aperture assembly to move can be independent of the circuit design of the lens driving device, thereby simplifying the design of the control circuit.

[0097] Although embodiments of the present invention have been shown and described with respect to one or more implementations, equivalents and modifications will occur to those of ordinary skill in the art upon reading and understanding this specification and the accompanying drawings. In addition, although a particular feature of the present invention may have been invented with respect to only one of several implementations, for any given or particular application, such feature may be combined with one or more other features of other implementations as may be required and advantageous.

[0098] Although various embodiments of the present invention have been described above, it should be understood that they are presented in an exemplary and non-limiting manner only. Various changes can be made according to the embodiments invented herein without departing from the spirit or scope of the present invention. Therefore, the breadth and scope of the present invention should not be limited by any of the above-described embodiments. On the contrary, the scope of the present invention should be defined according to the following claims and their equivalents.

[0099] The terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The singular forms "a, an," and "the" used herein are intended to include plural forms as well, unless the context clearly indicates otherwise. In addition, the terms "including, includes," "having, has, with," or variations thereof used in the embodiments and / or patent application scope are intended to be included in a manner similar to the word "comprising."

Claims

1. An optical element driving mechanism, comprising: A movable portion, used to connect an optical element; a fixed portion, the movable portion being movable relative to the fixed portion; as well as A driving assembly is used to drive the movable part to move.

2. The optical element driving mechanism as described in claim 1 further comprises a sensing component, wherein the fixing portion has a frame and a base, the frame is fixedly connected to the base, and the sensing component is disposed on the base. 3 . The optical element driving mechanism as described in claim 2 , wherein when observed along an incident direction of an incident light, the frame, the movable portion, the driving component, the sensing component, and the base are arranged in sequence.

4. The optical element driving mechanism as claimed in claim 3, further comprising an electronic component disposed on the base and electrically connected to the driving component, wherein the electronic component has: a first outer end protruding relative to the base, the first outer end having a groove; and A second outer end protrudes relative to the base. 5 . The optical element driving mechanism as claimed in claim 4 , wherein the first outer end is connected to a metal element, and the metal element extends in the incident direction.

6. The optical element driving mechanism as claimed in claim 4, wherein the second outer end extends in the incident direction.

7. The optical element driving mechanism as claimed in claim 3, wherein the driving assembly comprises: a first magnetic element; as well as A coil having a ladder-shaped structure, the coil corresponding to the first magnetic element; The base has a protruding structure and a main body, the thickness of the main body is smaller than the thickness of the protruding structure, and the coil is arranged on the protruding structure.

8. The optical element driving mechanism as claimed in claim 7, wherein the sensing component comprises: A first electronic component is disposed on the protruding structure; as well as A second electronic component is disposed on the main body, wherein the distance between the first electronic component and a bottom surface of the base is different from the distance between the second electronic component and the bottom surface.

9. The optical element driving mechanism of claim 8, further comprising a stabilizing component, wherein the stabilizing component comprises: a first magnetic conductive element, corresponding to the first magnetic element; a second magnetic conductive element; as well as A second magnetic element is disposed on the movable portion and corresponds to the second magnetic conductive element, wherein The distance between the first magnetic conductive element and the bottom surface is different from the distance between the second magnetic conductive element and the bottom surface.

10. The optical element driving mechanism according to claim 9, wherein: When observed along the incident direction, the center of the first magnetic element does not overlap with the center of the first magnetic conductive element, and the center of the second magnetic element overlaps with the center of the second magnetic conductive element; The first magnetic element is larger than the second magnetic element.

Images