CN112824962A - Method for controlling optical element driving mechanism - Google Patents
Method for controlling optical element driving mechanism Download PDFInfo
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- CN112824962A CN112824962A CN202011271849.4A CN202011271849A CN112824962A CN 112824962 A CN112824962 A CN 112824962A CN 202011271849 A CN202011271849 A CN 202011271849A CN 112824962 A CN112824962 A CN 112824962A
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 230000007246 mechanism Effects 0.000 title claims abstract description 32
- 238000013459 approach Methods 0.000 claims abstract description 10
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 description 9
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/08—Shutters
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
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Abstract
The present disclosure provides a control method of an optical element driving mechanism, including: the second movable part is far away from the first clamping hook structure so as to release the fixed relation between the optical element and the second movable part; moving the optical element from a first position to a second position; and making the second movable part approach the second hook structure so as to fix the optical element at a second position relative to the fixed part.
Description
Technical Field
The embodiments of the present disclosure relate to a method for controlling an optical element driving mechanism, and more particularly, to a method for controlling an optical element driving mechanism that moves an optical element from a first position to a second position.
Background
With the progress of technology, the applications of electronic devices are becoming more and more popular. At present, electronic devices having a camera or video recording function are becoming the mainstream in the market. In these electronic devices, a shutter mechanism is generally provided to control an exposure time to capture a high-quality image or video. However, existing shutter mechanisms are not satisfactory in all respects, and there is still room for improvement.
Disclosure of Invention
The embodiment of the present disclosure provides a method for controlling an optical element driving mechanism, where the optical element driving mechanism includes: the device comprises a first movable part, a fixed part, a first driving component, a second movable part, a second driving component and a control component. The first movable portion is used for connecting the optical element. The optical element is used for blocking light and can move relative to the fixed part. The first driving assembly is used for moving the optical element to a first position or a second position. The second movable portion corresponds to the first hook structure to fix the optical element at a first position relative to the fixed portion, and corresponds to the second hook structure to fix the optical element at a second position relative to the fixed portion. The second driving assembly is used for driving the second movable part to move relative to the fixed part, wherein the moving direction of the second movable part is different from the moving direction of the optical element. The control assembly is electrically connected with the first driving assembly and the second driving assembly. The control method comprises the following steps: the second movable part is far away from the first clamping hook structure so as to release the fixed relation between the optical element and the second movable part; moving the optical element from a first position to a second position; and making the second movable part approach the second hook structure so as to fix the optical element at a second position relative to the fixed part.
Drawings
The concepts of the disclosed embodiments can be better understood from the following detailed description when considered in conjunction with the accompanying drawings. It should be noted that, in accordance with the standard practice in the industry, the various features of the drawings are not necessarily drawn to scale. In fact, the dimensions of the various features may be arbitrarily expanded or reduced for clarity of presentation. Like reference numerals are used to denote like features throughout the specification and drawings.
Fig. 1 illustrates a perspective view of an optical element drive mechanism according to some embodiments of the present disclosure.
Fig. 2 shows an exploded view of the optical element driving mechanism according to fig. 1.
Fig. 3-7 illustrate cross-sectional views of optical element drive mechanisms according to some embodiments of the present disclosure.
Fig. 8-10 illustrate schematic diagrams of control methods of optical element drive mechanisms according to some embodiments of the present disclosure.
Description of reference numerals:
20: optical element driving mechanism
310: body
311: a first optical aperture
313: first accommodation part
315: first opening
316: first side wall
317: second side wall
318: depressions
319: convex column
320: top cover
321: second optical aperture
323: second accommodating part
325: second opening
329: locating hole
330: control assembly
340: first magnetic conduction piece
350: first coil
360: first magnetic element
370: second magnetic conduction piece
380: second coil
390: second magnetic element
400: elastic element
410: bottom cover
C4: winding shaft
E3: first drive assembly
E4: second drive assembly
L: optical module
M3: a first movable part
M4: second movable part
O': optical axis
R: optical element
R1: first hook structure
R2: second hook structure
R3: third opening
800. 900, 1000: graph table
801. 901, 1001: first point in time
802. 902, 1002: second point in time
803. 903, 1003: third time point
804. 904, 1004: a fourth point in time
805. 905, 1005: fifth time point
806. 906, 1006: the sixth time point
807. 907, 1007: the seventh time point
808. 908, 1008: eighth time point
809. 909, 1009: ninth time point
810. 910 and 1010: tenth point in time
Detailed Description
A control method of the optical element driving mechanism of the embodiment of the present disclosure is explained below. It should be appreciated, however, that the disclosed embodiments provide many suitable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments disclosed are merely illustrative of specific ways to make and use the disclosure, and do not limit the scope of the disclosure.
Furthermore, relative terms, such as "below" or "bottom" and "above" or "top," may be used in embodiments to describe one element's relative relationship to another element of the figures. It will be understood that if the device of the drawings is turned over and upside down, elements described as being on the "lower" side will be elements on the "upper" side.
It will be understood that, although the terms first, second, third, fourth, fifth, sixth, etc. may be used herein to describe various elements, materials and/or sections, these elements, materials and/or sections should not be limited by these terms, and these terms are only used to distinguish different elements, materials and/or sections. Thus, a first element, material, and/or section discussed below could be termed a second element, material, and/or section without departing from the teachings of some embodiments of the present disclosure, and unless specifically defined, any first or second element, material, and/or section recited in a claim may be understood to be any element, material, and/or section in the specification that conforms to the claims.
Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. Furthermore, the terms "substantially", "about" or "approximately" are also recited herein, and are intended to cover both substantially and completely consistent conditions or ranges. It should be noted that, unless otherwise defined, even if the above-mentioned terms are not described in the description, they should be interpreted in the same sense as if the above-mentioned approximate terms were described.
Fig. 1 illustrates a perspective view of an optical element drive mechanism 20 according to some embodiments of the present disclosure. It should be noted that, in the present embodiment, the optical element driving mechanism 20 is, for example, a shutter mechanism, and may be disposed in an electronic device (not shown) having a camera function, and may drive the optical element by the optical element driving mechanism. By controlling the position of the optical element, light can pass through or block the light, and the exposure time of the camera module of the electronic device can be controlled.
Fig. 2 shows an exploded view of the optical element driving mechanism 20 according to fig. 1. As shown in fig. 2, the optical element driving mechanism 20 may include: a first movable part M3, a fixed part F, a first driving assembly E3, a second movable part M4 and a second driving assembly E4. In the present embodiment, the fixing portion F includes: a body 310, a top cover 320, and a bottom cover 410. The top cover 320 and the bottom cover 410 are connected to the body 310, and the body 310 may be located between the top cover 320 and the bottom cover 410. The body 310 may be configured to carry the first movable portion M3 (and the optical element R connected to the first movable portion M3), and is connected to the optical module L.
In some embodiments, the body 310 has a recess 318 and a pillar 319 protruding from the recess 318, and a rounded corner is formed between the pillar 319 and the recess 318. In this way, the protruding pillars 319 can be effectively disposed in the positioning holes 329 of the top cover 320, and the top cover 320 can be more precisely disposed on the body 310. In some embodiments, the fixing portion F and the optical module L may be fixedly disposed on a substrate (not shown). In some embodiments, the optical element driving mechanism 20 is not in direct contact with the optical module L, but the present disclosure is not limited thereto.
The maximum dimension of the optical element driving mechanism 20 is larger than the maximum dimension of the optical module L in a direction parallel to the optical axis O'. For example, the height of the optical element driving mechanism 10 along the optical axis O 'is greater than the height of the optical module L along the optical axis O'. Further, the optical element R may comprise a baffle comprising SOMA or any other suitable light blocking material. The optical module L may include a camera module, which includes a lens or any other suitable light-transmitting material to allow light to pass through in a direction substantially parallel to the optical axis O', thereby achieving a camera function. However, the present disclosure is not limited thereto.
The first movable portion M3 can be used to connect to an optical element R, wherein the optical element R can be used to block light (e.g., light traveling in a direction substantially parallel to the optical axis O'). The first movable portion M3 is movable relative to the fixed portion F generally along the X-axis. The first driving assembly E3 is used for driving the first movable portion M3 to move along the X axis with respect to the fixed portion F. In the present embodiment, the first driving assembly E3 includes a first magnetic conductive member 340, a first coil 350, and a first magnetic element 360 corresponding to the first coil 350.
In some embodiments, the first driving assembly E3 can move the first movable portion M3 (and the connected optical element R) between the first position and the second position. For example, the first and second locations may be aligned along an X-axis (i.e., a line connecting the first and second locations may be substantially parallel to the X-axis). That is, the line connecting the first position and the second position is different from the optical axis O' (Z axis). In some embodiments, a line connecting the first position and the second position (e.g., the X-axis) is substantially perpendicular to the optical axis O' (e.g., the Z-axis).
The second movable portion M4 can be used to fix the optical element R at the first position or the second position relative to the fixed portion F. The second driving assembly E4 can be used to drive the second movable portion M4 to move relative to the fixed portion F substantially along the Z-axis. From this, the moving direction of the second movable portion M4 is different from the moving direction of the optical element R. In some embodiments, the moving direction of the second movable portion M4 is substantially perpendicular to the moving direction of the optical element R. In some embodiments, the second movable portion M4 can fix the optical element R at the first position or the second position relative to the fixed portion F. In addition, the control assembly 330 may be disposed on the body 310 and electrically connected to the first driving assembly E3 and the second driving assembly E4.
In this embodiment, the optical element driving mechanism 20 further includes an elastic element 400 abutting against the second movable portion M4 and driving the second movable portion M4 to move relative to the fixed portion F. The elastic member 400 may be disposed on the bottom cover 410. In some embodiments, the elastic element 400 can drive the second movable portion M4 to move in the Z-axis relative to the fixed portion F. More specifically, the elastic member 400 may continuously apply the elastic force parallel to the Z-axis (e.g., toward the top cover 320) to the second movable portion M4.
Fig. 3-7 illustrate cross-sectional views of an optical element drive mechanism 20 according to some embodiments of the present disclosure. As shown in fig. 3, the body 310 has a first optical hole 311 corresponding to the optical module L. The top cover 320 has a second optical hole 321 corresponding to the optical module L and the first optical hole 311.
In addition, the body 310 has a first accommodating portion 313 for accommodating the second movable portion M4. The top cover 320 has a second receiving portion 323 to receive the second movable portion M4. In the present embodiment, the size of the first receiving portion 313 is substantially equal to the size of the second receiving portion 323. In some embodiments, the size of the first receiving portion 313 is smaller than the size of the second receiving portion 323. In addition, the optical element R has a first hook structure R1 and a second hook structure R2, which correspond to the second movable portion M4, respectively. The optical element R is located between the body 310 and the cap 320. When the optical element R is located at the first position (i.e. when the optical element R is not overlapped with the first optical hole 311 and the second optical hole 321), the second movable portion M4 passes through the first hook structure R1.
In addition, the body 310 has a first opening 315 for accommodating the first movable portion M3, and the first driving element E3 (including the first magnetic conductive member 340, the first coil 350 and the first magnetic element 360) drives the first movable portion M3 to move in the first opening 315. The top cover 320 has a second opening 325 for receiving the first movable portion M3, and the first driving assembly E3 drives the first movable portion M3 to move in the second opening 325. The optical element R has a third opening R3 corresponding to the first movable portion M3. In some embodiments, the first movable portion M3 may be sleeved in the third opening R3. The first opening 315 has a first sidewall 316 and a second sidewall 317 opposite the first sidewall 316. The first side wall 316 and the second side wall 317 can form a stop portion for limiting the movement of the first movable portion M3 relative to the fixed portion F within a movement range. When the second movable portion M4 is located at the first position, the first movable portion M3 abuts against the second side wall 317.
In some embodiments, the second movable portion M4 may deviate from the first position due to an external impact and contact the first hook structure R1 of the optical element R. At this time, since the second movable portion M4 generates a friction force with the optical element R, the second driving assembly E4 may not easily overcome the friction force to drive the second movable portion M4 to move along the Z-axis relative to the fixed portion F.
As shown in fig. 4, the control component 330 may output a first driving signal to the first driving component E3, so as to generate a first driving force for the optical element R to move the optical element R in a first direction (e.g., rightward) relative to the fixing portion F. In this way, the second movable portion M4 can be moved away from the first hook structure R1, and the fixed relationship between the optical element R and the second movable portion M4 can be released. In other words, the first hook structure R1 and the second movable portion M4 have a non-zero gap, i.e., the first hook structure R1 and the second movable portion M4 are not in direct contact. In this way, it is ensured that the second movable portion M4 does not generate friction with the optical element R, so that the second driving assembly E4 can smoothly drive the second movable portion M4 to move along the Z-axis relative to the fixed portion F.
When the optical element R reaches the first position (e.g., when the first movable portion M3 abuts against the second sidewall 317), the optical element R does not obscure the second optical hole 321 at all when viewed along the Z-axis, so that the first optical hole 311 is completely exposed from the second optical hole 321.
Next, as shown in fig. 5, the control module 330 outputs a second driving signal to the second driving module E4 to generate a second driving force for the second movable portion M4, so that the second movable portion M4 is away from the first hook structure R1. In this embodiment, the second driving assembly E4 may include a second magnetic conductive member 370, a second coil 380 and a second magnetic element 390. An electrical signal may be transmitted to the second coil 380 causing the second magnetically permeable member 370 to generate a magnetic force corresponding to the second magnetic element 390. In this way, the second magnetic conducting member 370 and the second magnetic element 390 generate a downward force, so that the second magnetic element 390 can counteract the elastic force generated by the elastic element 400 to drive the second movable portion M4 to move downward. In other words, the maximum driving force generated by the second driving assembly E4 is greater than the elastic force exerted by the elastic element 400.
Then, as shown in fig. 6, the first driving assembly E3 can drive the first movable portion M3 and the optical element R to move from the first position to the second position in a second direction (e.g., to the left). More specifically, an electrical signal may be transmitted to the first coil 350, such that the first magnetic conductive member 340 generates a magnetic force corresponding to the first magnetic element 360. In this way, the first magnetic conducting member 340 and the first magnetic element 360 generate a force to drive the first movable portion M3 and the optical element R away from the first position. At this time, when the optical element R is located at the second position, the optical element R overlaps the first optical hole 311 and the second optical hole 321. Thus, the light entering the optical module L through the optical axis O' can be blocked.
As shown in fig. 7, since the elastic element 400 continuously applies an upward elastic force to the second movable portion M4, the second movable portion M4 can approach the second hook structure R2, so that the optical element R is fixed at the second position relative to the fixing portion F, and the light entering the optical module L through the optical axis O' is kept blocked. Therefore, the probability that the optical element R loses the function of blocking light due to external impact can be reduced. It should be understood that the above exemplarily describes the process of moving the optical element from the first position to the second position. If the optical element is to be moved from the second position to the first position, the reverse procedure is followed.
Fig. 8-10 illustrate schematic diagrams of control methods of optical element drive mechanisms according to some embodiments of the present disclosure. A control method of the optical element driving mechanism will be described below with reference to a graph 800 shown in fig. 8. In the present embodiment, the vertical axis of the graph 800 represents the different PINs PIN1, PIN2, PIN3, and PIN4 of the control component (e.g., control component 330), respectively. It should be understood that the initial state (at 0 real time) of all PINs PIN1, PIN2, PIN3, and PIN4 does not transmit an electrical signal, which generates a square wave when transmitting an electrical signal.
The PINs PIN1 and PIN2 are electrically connected to the first driving element E3, and the optical element can move in the first direction relative to the fixing portion by transmitting an electrical signal to the PIN PIN2, and the optical element can move in the second direction relative to the fixing portion by transmitting an electrical signal to the PIN PIN 1. In other words, the electrical signals transmitted to PINs PIN1, PIN2 have opposite current directions. The PINs PIN3 and PIN4 are electrically connected to the second driving element E4. In some embodiments, the transmission of an electrical signal to PIN PIN3 causes the second movable portion to move downward relative to the stationary portion, and the transmission of an electrical signal to PIN PIN4 causes the optical element to move upward relative to the stationary portion. The horizontal axis of graph 800 is a time axis. The graphs 900 and 1000 shown in fig. 9 and 10 can also be interpreted in the above manner, and will not be described in detail below.
In this embodiment, the control module starts to output the first driving signal to the first driving module at the first time point 801, so as to generate the first driving force for the optical element to move the optical element in the first direction relative to the fixing portion. The control component starts to continuously output a second driving signal to the second driving component at a second time point 802 so as to generate a second driving force for the second movable portion, so that the second movable portion is away from the first hook structure. In addition, the control element stops outputting the first driving signal to the first driving element at a third time point 803.
In some embodiments, the first point in time 801 is different from the second point in time 802. In some embodiments, the first time point 801 is earlier than the second time point 802, and the second time point 802 is between the first time point 801 and the third time point 803. In some embodiments, the first time point 801, the second time point 802 are spaced apart the same distance as the second time point 802, the third time point 803. In some embodiments, the power of the first driving signal output by the control device at the first time point 801 and the power of the second driving signal output by the control device at the second time point 802 are equal. With the above arrangement, the optical element can be moved in the first direction relative to the fixed portion before the second movable portion is driven by the second driving assembly. Therefore, the second movable part can not generate friction force with the first clamping hook structure of the optical element, so that the second driving component can smoothly drive the second movable part to move relative to the fixed part.
Then, the control module starts to continuously output a third driving signal to the first driving module at a fourth time point 804 to generate a second driving force for the optical element, so that the optical element moves from the first position to the second position in the second direction relative to the fixing portion. In some embodiments, the third time point 803 may be equal to or earlier than the fourth time point 804. In some embodiments, the first driving signal output by the control device at the first time point 801 and the third driving signal output by the control device at the fourth time point 804 have opposite current directions. In some embodiments, the power of the first drive signal and the third drive signal are equal. In some embodiments, the first driving force and the second driving force are different in direction. In some embodiments, the first driving force and the second driving force are opposite in direction. In some embodiments, the first direction and the second direction are different. In some embodiments, the first direction and the second direction are parallel. In some embodiments, the first direction and the second direction are opposite. With the above configuration, the optical element can be moved in the second direction relative to the fixed portion after the second driving assembly drives the second movable portion.
In addition, the control device stops outputting the second driving signal to the second driving device at the fifth time point 805. The control device starts to output the second driving signal to the second driving device at the sixth time point 806. The control device stops outputting the second driving signal to the second driving device at a seventh time point 807. Therefore, the energy loss can be saved as much as possible under the condition that the second movable part does not influence the movement of the optical element.
In some embodiments, fourth time point 804 is earlier than fifth time point 805, fifth time point 805 is earlier than sixth time point 806, and sixth time point 806 is earlier than seventh time point 807. In other words, the fifth time point 805 is between the second time point 802 and the sixth time point 806, and the sixth time point 806 is between the fifth time point 805 and the seventh time point 807. In some embodiments, the interval between the first time point 801 and the third time point 803 is different from the interval between the second time point 802 and the seventh time point 807. In some embodiments, the interval between the first time point 801 and the third time point 803 is smaller than the interval between the second time point 802 and the seventh time point 807. In some embodiments, the sum of the interval between second time point 802 and fifth time point 805 and the interval between sixth time point 806 and seventh time point 807 is different from the interval between fifth time point 805 and sixth time point 806. In some embodiments, the sum of the interval between second time point 802 and fifth time point 805 and the interval between sixth time point 806 and seventh time point 807 is greater than the interval between fifth time point 805 and sixth time point 806.
In addition, in some embodiments, the control component may selectively start to continuously output the fourth driving signal to the second driving component at the eighth time point 808 to generate the fourth driving force for the second movable portion, so that the second movable portion approaches the second hook structure. The control element stops outputting the third driving signal to the first driving element at the ninth time point 809. The control device stops outputting the fourth driving signal to the second driving device at the tenth time 810. Therefore, after the optical element reaches the second position, the optical element can be fixed at the second position relative to the fixed part through the second movable part. In other embodiments, the control device may not output the fourth driving signal to the second driving device, and the second movable portion may actively approach the second hook structure.
In some embodiments, the seventh time point 807 is equal to or earlier than the eighth time point 808, and the seventh time point 807 is earlier than the ninth time point 809. In some embodiments, the eighth time point 808 is earlier than the ninth time point 809, and the ninth time point 809 is earlier than the tenth time point 810. In some embodiments, the eighth time point 808, the ninth time point 809 are the same interval as the ninth time point 809, the tenth time point 810; in some embodiments, the interval between the first time point 801 and the third time point 803 is the same as the interval between the eighth time point 808 and the tenth time point 810; and the intervals between the second time point 802 and the seventh time point 807 are the same as the intervals between the fourth time point 804 and the ninth time point 809.
It should be understood that the above exemplarily describes the process of moving the optical element from the first position to the second position. If the optical element is moved from the second position to the first position, the procedure can be performed according to the reverse procedure, which will not be described in detail below.
According to the graph 900 shown in fig. 9, in the present embodiment, the control component starts to output the first driving signal to the first driving component at the first time point 901, so as to generate the first driving force for the optical element to move the optical element in the first direction relative to the fixing portion. The control module starts to continuously output a second driving signal to the second driving module at a second time point 902 to generate a second driving force for the second movable portion, so that the second movable portion is away from the first hook structure. In addition, the control element stops outputting the first driving signal to the first driving element at a third time point 903.
In some embodiments, the first time point 901 is different from the second time point 902. In the present embodiment, the second time point 902 is earlier than the first time point 901, and the first time point 901 is between the second time point 902 and the third time point 903. In some embodiments, the interval between the first time point 901 and the second time point 902 is the same as the interval between the first time point 901 and the third time point 903. In some embodiments, the power of the first driving signal outputted by the control device at the first time point 901 is equal to the power of the second driving signal outputted by the control device at the second time point 902. With the above arrangement, the optical element can be moved in the first direction before being moved in the second direction with respect to the fixed portion. Therefore, the second movable part can not generate friction force with the first clamping hook structure of the optical element, so that the second driving component can smoothly drive the second movable part to move relative to the fixed part.
Then, the control module starts to output a third driving signal to the first driving module at a fourth time point 904, so as to generate a second driving force for the optical element, so that the optical element moves from the first position to the second position in the second direction relative to the fixing portion. In some embodiments, the third time point 903 may be equal to or earlier than the fourth time point 904. In some embodiments, the first driving signal output by the control device at the first time point 901 and the third driving signal output by the control device at the fourth time point 904 have opposite current directions. In some embodiments, the power of the first drive signal and the third drive signal are equal. In some embodiments, the first driving force and the second driving force are different in direction. In some embodiments, the first driving force and the second driving force are opposite in direction. In some embodiments, the first direction and the second direction are different. In some embodiments, the first direction and the second direction are parallel. In some embodiments, the first direction and the second direction are opposite. With the above configuration, the optical element can be moved in the second direction relative to the fixed portion after the second driving assembly drives the second movable portion.
In addition, the control element stops outputting the second driving signal to the second driving element at a fifth time point 905. The control element starts to output the second driving signal to the second driving element at a sixth time point 906. The control device stops outputting the second driving signal to the second driving device at the seventh time point 907. Therefore, the energy loss can be saved as much as possible under the condition that the second movable part does not influence the movement of the optical element. In some embodiments, the fourth time point 904 is earlier than the fifth time point 905, the fifth time point 905 is earlier than the sixth time point 906, and the sixth time point 906 is earlier than the seventh time point 907.
In addition, in some embodiments, the control component may selectively start to continuously output the fourth driving signal to the second driving component at the eighth time point 908 to generate the fourth driving force for the second movable portion, so that the second movable portion approaches the second hook structure. The control element stops outputting the third driving signal to the first driving element at the ninth time point 909. The control device stops outputting the fourth driving signal to the second driving device at the tenth time point 910. Therefore, after the optical element reaches the second position, the optical element can be fixed at the second position relative to the fixed part through the second movable part. In other embodiments, the control device may not output the fourth driving signal to the second driving device, and the second movable portion may actively approach the second hook structure.
In some embodiments, the seventh time point 907 is equal to or earlier than the eighth time point 908, and the seventh time point 907 is earlier than the ninth time point 909. In some embodiments, the eighth time point 908 is earlier than the ninth time point 909, and the ninth time point 909 is earlier than the tenth time point 910. It should be understood that the above exemplarily describes the process of moving the optical element from the first position to the second position. If the optical element is moved from the second position to the first position, the procedure can be performed according to the reverse procedure, which will not be described in detail below.
According to the graph 1000 shown in fig. 10, in the present embodiment, the control component starts to continuously output the first driving signal to the first driving component at the first time point 1001, so as to generate the first driving force for the optical element to move the optical element in the first direction relative to the fixing portion. The control component starts to continuously output a second driving signal to the second driving component at a second time point 1002 to generate a second driving force for the second movable portion, so that the second movable portion is far away from the first hook structure. In addition, the control element stops outputting the first driving signal to the first driving element at a third time point 1003.
In some embodiments, the first point in time 1001 is different from the second point in time 1002. In the present embodiment, the second time point 1002 is earlier than the first time point 1001, and the first time point 1001 is between the second time point 1002 and the third time point 1003. In some embodiments, the power of the first driving signal output by the control device at the first time point 1001 is equal to the power of the second driving signal output by the control device at the second time point 1002. With the above arrangement, the optical element can be moved in the first direction before being moved in the second direction with respect to the fixed portion. Therefore, the second movable part can not generate friction force with the first clamping hook structure of the optical element, so that the second driving component can smoothly drive the second movable part to move relative to the fixed part.
Then, the control module starts to output the third driving signal to the first driving module at the fourth time point 1004, so as to generate the second driving force for the optical element, and the optical element moves from the first position to the second position in the second direction relative to the fixing portion. In some embodiments, the third time point 1003 may be earlier than the fourth time point 1004. In some embodiments, the first driving signal output by the control device at the first time point 1001 and the third driving signal output by the control device at the fourth time point 1004 are opposite in current direction. In some embodiments, the power of the first drive signal and the third drive signal are equal. In some embodiments, the first driving force and the second driving force are different in direction. In some embodiments, the first driving force and the second driving force are opposite in direction. In some embodiments, the first direction and the second direction are different. In some embodiments, the first direction and the second direction are parallel. In some embodiments, the first direction and the second direction are opposite. With the above configuration, the optical element can be moved in the second direction relative to the fixed portion after the second driving assembly drives the second movable portion.
In addition, the control device stops outputting the second driving signal to the second driving device at a fifth time point 1005. The control device starts to output the second driving signal to the second driving device at a sixth time point 1006. The control module stops outputting the second driving signal to the second driving module at a seventh time point 1007. Therefore, the energy loss can be saved as much as possible under the condition that the second movable part does not influence the movement of the optical element. In some embodiments, fifth time point 1005 is earlier than sixth time point 1006, sixth time point 1006 is earlier than seventh time point 1007, and fourth time point 1004 is between sixth time point 1006 and seventh time point 1007.
In addition, in some embodiments, the control component may selectively start to continuously output the fourth driving signal to the second driving component at the eighth time point 1008 to generate the fourth driving force for the second movable portion, so that the second movable portion approaches the second hook structure. The control element stops outputting the third driving signal to the first driving element at the ninth time point 1009. The control device stops outputting the fourth driving signal to the second driving device at a tenth time point 1010. Therefore, after the optical element reaches the second position, the optical element can be fixed at the second position relative to the fixed part through the second movable part. In other embodiments, the control device may not output the fourth driving signal to the second driving device, and the second movable portion may actively approach the second hook structure.
In some embodiments, seventh time point 1007 is equal to or earlier than eighth time point 1008 and seventh time point 1007 is earlier than ninth time point 1009. In some embodiments, the eighth time point 1008 is earlier than the ninth time point 1009, and the ninth time point 1009 is earlier than the tenth time point 1010. It should be understood that the above exemplarily describes the process of moving the optical element from the first position to the second position. If the optical element is moved from the second position to the first position, the procedure can be performed according to the reverse procedure, which will not be described in detail below.
In summary, the embodiments of the present disclosure provide a method for controlling an optical element driving mechanism that moves an optical element from a first position to a second position. The optical element is moved in the opposite first direction before moving the optical element relative to the fixed part in the second direction from the first position to the second position. Therefore, before the second driving component drives the second movable part, the second movable part is ensured not to generate friction force with the first clamping hook structure of the optical element, so that the second driving component can smoothly drive the second movable part to move relative to the fixed part, and the probability of the failure of the optical element driving mechanism is favorably reduced.
Although the embodiments of the present disclosure and their advantages have been disclosed above, it should be understood that various changes, substitutions and alterations can be made herein by those skilled in the art without departing from the spirit and scope of the disclosure. Moreover, the scope of the present disclosure is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification, but rather, the process, machine, manufacture, composition of matter, means, methods and steps, presently existing or later to be developed, that will be obvious to one having the benefit of the present disclosure, may be utilized in the practice of the present disclosure. Accordingly, the scope of the present disclosure includes the processes, machines, manufacture, compositions of matter, means, methods, and steps, as described above, and any combination of the features of the embodiments described herein, without departing from the spirit or scope of the present disclosure. In addition, each claim constitutes a separate embodiment, and the scope of protection of the present disclosure also includes combinations of the respective claims and embodiments.
Claims (10)
1. A control method for controlling an optical element driving mechanism, the optical element driving mechanism comprising:
the first movable part is used for connecting an optical element, and the optical element is used for blocking a light ray;
a fixed part, the optical element can move relative to the fixed part;
a first driving assembly for moving the optical element to a first position or a second position;
a second movable portion corresponding to a first hook structure for fixing the optical element at the first position relative to the fixed portion, and a second hook structure for fixing the optical element at the second position relative to the fixed portion;
the second driving component is used for driving the second movable part to move relative to the fixed part, wherein the moving direction of the second movable part is different from the moving direction of the optical element; and
a control component electrically connected to the first driving component and the second driving component,
the control method comprises the following steps:
the second movable part is far away from the first clamping hook structure so as to release the fixed relation between the optical element and the second movable part;
moving the optical element from the first position to the second position; and
the second movable portion is close to the second hook structure, so that the optical element is fixed at the second position relative to the fixed portion.
2. The method as claimed in claim 1, wherein the step of moving the second movable portion away from the first hook structure comprises:
the control component starts to continuously output a first driving signal to the first driving component at a first time point so as to generate a first driving force for the optical element to enable the optical element to move in a first direction relative to the fixed part;
the control component starts to continuously output a second driving signal to the second driving component at a second time point so as to generate a second driving force for the second movable part and enable the second movable part to be far away from the first clamping hook structure; and
the control component stops outputting the first driving signal to the first driving component at a third time point.
3. The method of claim 2, wherein moving the optical element from the first position to the second position further comprises:
the control component starts to continuously output a third driving signal to the first driving component at a fourth time point so as to generate a second driving force for the optical element, so that the optical element moves from the first position to the second position in a second direction relative to the fixed part.
4. The method of claim 3, wherein moving the optical element from the first position to the second position further comprises:
the control component stops outputting the second driving signal to the second driving component at a fifth time point; and
the control component starts to continuously output the second driving signal to the second driving component at a sixth time point.
5. The method of claim 4, wherein the step of bringing the second movable portion closer to the second hook structure further comprises:
the control component stops outputting the second driving signal to the second driving component at a seventh time point;
the control component starts to continuously output a fourth driving signal to the second driving component at an eighth time point so as to generate a fourth driving force for the second movable part, so that the second movable part approaches to the second clamping hook structure;
the control component stops outputting the third driving signal to the first driving component at a ninth time point; and
the control component stops outputting the fourth driving signal to the second driving component at a tenth time point.
6. The control method according to claim 5, wherein:
the ninth time point is between the eighth time point and the tenth time point;
the eighth time point and the ninth time point have the same interval as the ninth time point and the tenth time point;
the interval between the first time point and the third time point is different from the interval between the second time point and the seventh time point;
the interval between the first time point and the third time point is smaller than the interval between the second time point and the seventh time point;
the interval between the first time point and the third time point is the same as the interval between the eighth time point and the tenth time point; and
the interval between the second time point and the seventh time point is the same as the interval between the fourth time point and the ninth time point.
7. The control method according to claim 5, wherein:
the fifth time point is between the second time point and the sixth time point;
the sixth time point is between the fifth time point and the seventh time point;
the sum of the second time point, the interval of the fifth time point and the interval of the sixth time point and the seventh time point is different from the interval of the fifth time point and the sixth time point; and
the sum of the interval between the second time point and the fifth time point and the interval between the sixth time point and the seventh time point is greater than the interval between the fifth time point and the sixth time point.
8. The control method according to claim 5, wherein:
the first time point is earlier than the second time point;
the second time point is earlier than the third time point;
the third time point is equal to or earlier than the fourth time point;
the third time point is earlier than the fourth time point;
the fourth time point is earlier than the fifth time point;
the fifth time point is earlier than the sixth time point;
the sixth time point is earlier than the seventh time point;
the seventh time point is equal to or earlier than the eighth time point;
the seventh time point is earlier than the ninth time point;
the eighth time point is earlier than the ninth time point; and
the ninth time point is earlier than the tenth time point.
9. The control method according to claim 3, wherein:
the current directions of the first driving signal and the third driving signal are opposite;
the power of the first driving signal and the power of the third driving signal are equal;
the first driving force and the second driving force are different in direction;
the first driving force and the second driving force are opposite in direction;
the first direction and the second direction are different;
the first direction and the second direction are parallel; and
the first direction and the second direction are opposite.
10. The control method according to claim 2, wherein:
the first time point is different from the second time point;
the first time point is earlier than the second time point;
the second time point is between the first time point and the third time point;
the interval between the first time point and the second time point is the same as the interval between the second time point and the third time point; and;
the power of the first driving signal and the second driving signal is equal.
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| US201962935926P | 2019-11-15 | 2019-11-15 | |
| US62/935,926 | 2019-11-15 | ||
| US201962950520P | 2019-12-19 | 2019-12-19 | |
| US62/950,520 | 2019-12-19 |
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| CN202022635118.5U Active CN213715660U (en) | 2019-11-15 | 2020-11-13 | Optical element driving mechanism |
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| CN112824962B (en) | 2024-04-02 |
| CN213715660U (en) | 2021-07-16 |
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