Periscopic driving module and image capturing mechanism

Abstract

The utility model provides a periscopic driving module, which aims to improve the imaging quality and realize the miniaturization setting, and comprises a base, a driving module, a driving module and a driving module, the prism carrying seat is arranged opposite to the base, one side, facing the base, of the prism carrying seat is provided with a sphere, and the sphere extends into the groove; the prism is arranged on the prism carrying seat and is used for reflecting light; the balls are rotationally arranged in the groove and are arranged at intervals in the circumferential direction of the groove, and each ball abuts against the bottom wall of the groove and the ball body; the magnetic attraction piece is embedded in the bottom wall of the groove; the magnetic conducting piece is embedded in the sphere and is in magnetic attraction fit with the magnetic attraction piece so as to fix the prism carrying seat to the base; the first driving assembly is arranged on the prism carrying seat and the base and is used for driving the prism carrying seat to rotate relative to the base by taking the first direction as an axis; and the second driving assembly is arranged on the prism carrying seat and the base and used for driving the prism carrying seat to rotate relative to the base by taking the second direction as an axis. The utility model further provides an image capturing mechanism comprising a lens assembly and the periscopic driving module.

Description

Technical Field

[0001] This application relates to the field of optical technology, specifically to a periscope drive module and an image acquisition mechanism. Background Technology

[0002] A periscope drive module typically includes a base and a prism assembly. The prism assembly usually consists of a prism carrier and a prism mounted on the prism carrier to reflect light to the lens. Currently, the prism carrier and the base mostly have two-point contact, with two sets of drive assemblies driving the prism carrier to move the prism to perform nodding and tilting operations respectively. However, the two-point contact between the prism carrier and the base can cause interference when the prism carrier moves in two different directions, reducing image quality. In addition, the above operating method requires a large volume, which is not conducive to the miniaturization of periscope drive modules. Utility Model Content

[0003] In view of the above, it is necessary to provide a periscope drive module and an image acquisition mechanism to improve imaging quality and achieve miniaturization.

[0004] This application provides a periscope drive module, including:

[0005] The base has a groove.

[0006] A prism carrier is disposed opposite to the base, and the side of the prism carrier facing the base has a sphere that extends into the groove.

[0007] A prism, disposed on the prism carrier, is used to reflect light;

[0008] Multiple balls are rotatably disposed in the groove and spaced apart circumferentially along the groove, and each ball abuts against the bottom wall of the groove and the sphere respectively;

[0009] The connecting component includes a magnetic attracting element and a magnetic guiding element. One of the magnetic attracting element and the magnetic guiding element is embedded in the bottom wall of the groove, and the other is embedded in the sphere. The magnetic attracting element and the magnetic guiding element are magnetically attracted to fix the prism carrier to the base.

[0010] A first driving component, disposed on the prism carrier and the base, is used to drive the prism carrier to rotate relative to the base about a first direction as an axis; and

[0011] A second driving component is disposed on the prism carrier and the base and spaced apart from the first driving component along the first direction. The second driving component is used to drive the prism carrier to rotate relative to the base about a second direction as an axis, and the second direction is perpendicular to the first direction.

[0012] In the aforementioned periscope drive module, the rotation of the sphere on the prism mount relative to the base reduces the deviation between the rotation center of the prism and the optical axis center of the periscope drive assembly, thereby reducing phase difference and improving the imaging quality of the imaging mechanism where the periscope drive module is located. Furthermore, the sphere forms rolling contact with the base via multiple ball bearings, reducing the space required for the prism mount to rotate and enabling a miniaturized periscope drive module.

[0013] In some embodiments, the first driving component includes a first magnet and a first coil, one of which is disposed on the base and located on the side of the groove in the second direction, and the other is disposed on the prism carrier. When the first coil is energized, a magnetic attraction is generated between the first coil and the first magnet to drive the prism carrier to rotate relative to the base about the first direction as an axis.

[0014] Therefore, the combination of the first magnet and the first coil can reduce the space occupied by the first drive component, which is conducive to the miniaturization of the first drive component.

[0015] In some embodiments, the base has a first bottom groove on the side facing the prism carrier, the first coil is disposed in the first bottom groove, the prism carrier has a first carrier groove on the side facing the base, and the first magnet is disposed in the first carrier groove.

[0016] Therefore, the installation accuracy of the first coil can be improved by using the first bottom slot, and the installation accuracy of the first magnet can be improved by using the first carrier slot.

[0017] In some embodiments, the periscope drive module further includes:

[0018] The first flexible member has the first coil sleeved on one end to be limited by the first flexible member, and the other end of the first flexible member protrudes from the first coil to support the first magnet.

[0019] Therefore, the first flexible member can flexibly support the first magnet to avoid collision between the first magnet and the first coil, which is beneficial to improving the service life of the first magnet and the first coil.

[0020] In some embodiments, the second driving component includes a second magnet and a second coil, one of which is disposed on the base and located on the side of the groove in the first direction, and the other is disposed on the prism carrier. When the second coil is energized, a magnetic attraction force is generated between the second coil and the second magnet to drive the prism carrier to rotate relative to the base about the second direction as an axis.

[0021] Therefore, by combining the second magnet and the second coil, the space occupied by the second drive component can be reduced, which is beneficial to the miniaturization of the second drive component.

[0022] In some embodiments, the base has a second bottom groove on the side facing the prism carrier, the second coil is disposed in the second bottom groove, the prism carrier has a second carrier groove on the side facing the base, and the second magnet is disposed in the second carrier groove.

[0023] Therefore, the installation accuracy of the second coil can be improved by using the second bottom slot, and the installation accuracy of the second magnet can be improved by using the second carrier slot.

[0024] In some embodiments, the periscope drive module further includes:

[0025] The second flexible member has the second coil sleeved on one end to be limited by the second flexible member, and the other end of the second flexible member protrudes from the second coil to support the second magnet.

[0026] Therefore, the second flexible member can flexibly support the second magnet to avoid collision between the second magnet and the second coil, which is beneficial to improving the service life of the second magnet and the second coil.

[0027] In some embodiments, the periscope drive module further includes:

[0028] Two first elastic elements are located on opposite sides of the groove in the first direction. The two ends of each first elastic element are respectively connected to the base and the prism carrier, and the elastic force direction of each first elastic element is perpendicular to the first direction and the second direction.

[0029] Therefore, the two first elastic elements can pull the prism carrier in the second direction to avoid the deviation of the prism carrier relative to the base in the second direction, thereby ensuring the positional accuracy of the prism carrier relative to the base in the second direction.

[0030] In some embodiments, the periscope drive module further includes:

[0031] Two second elastic elements are located between the groove and the prism carrier and are spaced apart along the first direction. The two ends of each second elastic element are respectively connected to the base and the prism carrier, and the elastic force direction of each second elastic element is parallel to the first direction.

[0032] Therefore, the prism carrier can be pulled in the first direction by the two second elastic elements to avoid the deviation of the prism carrier relative to the base in the first direction, thereby ensuring the positional accuracy of the prism carrier relative to the base in the first direction.

[0033] This application embodiment also provides an image acquisition mechanism, including:

[0034] The aforementioned periscope drive module; and

[0035] A lens assembly includes a lens mount and a lens, the lens mount being disposed on the side of the prism carrier opposite to the base, and the lens being disposed on the lens mount and used to receive light reflected by the prism.

[0036] The periscope-style drive module in the aforementioned image-capturing mechanism reduces the deviation between the rotation center of the prism and the optical axis center of the lens assembly by rotating a sphere on the prism carrier relative to the base, thereby reducing phase aberration and improving the imaging quality of the image-capturing mechanism. Furthermore, the sphere forms rolling contact with the base via multiple ball bearings, reducing the space required for the prism carrier to rotate and enabling a miniaturized image-capturing mechanism. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the periscope drive module according to an embodiment of this application.

[0038] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the periscope drive module along the AA direction.

[0039] Figure 3 for Figure 1 An exploded view of the periscope drive module shown.

[0040] Figure 4 for Figure 3 A schematic diagram of the periscope drive module from another perspective.

[0041] Figure 5 This is a schematic diagram of the imaging mechanism in an embodiment of this application.

[0042] Key component symbols: Periscope drive module 100, base 110, groove 110a, first bottom groove 110b, second bottom groove 110c, mounting hole 110d, prism carrier 120, sphere 120a, first carrier groove 120b, second carrier groove 120c, prism 130, ball bearing 140, connecting assembly 156, magnetic attracting component 150, magnetic guiding component 160, first drive assembly 170, first magnet 171, first coil 172, second drive assembly 180, second magnet 181, second coil 182, first flexible component 190, second flexible component 191, first elastic component 192, second elastic component 193, image capturing mechanism 1000, lens assembly 200, lens mount 210, lens 220. Detailed Implementation

[0043] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. In the description of this application, it should be noted that "multiple" means two or more, unless otherwise expressly and specifically limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0046] For ease of description, a three-dimensional coordinate system has been added to some of the accompanying drawings. Specifically, the X-axis is the first direction, the Y-axis is the direction of the elastic force of the first elastic element, and the Z-axis is the third direction. The X-axis, Y-axis, and Z-axis are all perpendicular to each other.

[0047] Please see Figure 1 and Figure 2This application provides a periscope-type drive module 100, including a base 110, a prism carrier 120, a prism 130, a plurality of balls 140, a connecting assembly 156, a first drive assembly 170, and a second drive assembly 180. The base 110 has a groove 110a. The prism carrier 120 is disposed opposite to the base 110, and the side of the prism carrier 120 facing the base 110 has a sphere 120a that extends into the groove 110a. The prism 130 is disposed on the prism carrier 120 for reflecting light. The plurality of balls 140 are rotatably disposed in the groove 110a and spaced apart along the circumference of the groove 110a, and each ball 140 abuts against the bottom wall of the groove 110a and the ball 120a. The connecting component 156 includes a magnetic attracting component 150 and a magnetic guiding component 160. One of the magnetic attracting component 150 and the magnetic guiding component 160 is embedded in the bottom wall of the groove 110a, and the other is embedded in the sphere 120a. The magnetic attracting component 150 and the magnetic guiding component 160 magnetically engage to fix the prism carrier 120 to the base 110. The first driving component 170 is disposed on the prism carrier 120 and the base 110 and is used to drive the prism carrier 120 to rotate relative to the base 110 with the X-axis as the axis. The second driving component 180 is disposed on the prism carrier 120 and the base 110 and is spaced apart from the first driving component 170 along the X-axis. The second driving component 180 is used to drive the prism carrier 120 to rotate relative to the base 110 with the Z-axis as the axis.

[0048] In the periscope drive module 100 described above, the rotation of the sphere 120a on the prism carrier 120 relative to the base 110 reduces the deviation between the rotation center of the prism 130 and the optical axis center of the periscope drive module 100, thereby reducing phase difference and improving the imaging quality of the imaging mechanism in which the periscope drive module 100 is located. Furthermore, the sphere 120a forms rolling contact with the base 110 through multiple ball bearings 140, reducing the space required for the prism carrier 120 to rotate, thus enabling a miniaturized design of the periscope drive module 100.

[0049] In some embodiments, the sphere 120a may be fixedly mounted on the prism carrier 120. In other embodiments, the sphere 120a and the prism base 120 may be integrated into one structure.

[0050] In some embodiments, each ball 140 is embedded in the bottom wall of the groove 110a, such that the position of the ball 140 relative to the groove 110a remains unchanged when rotating, so that the multiple balls 140 are spaced apart along the circumference of the groove 110a, thereby ensuring that the multiple balls 140 always maintain multi-point support for the sphere 120a.

[0051] Please see Figure 2 and Figure 3In this embodiment, the surface of the base 110 facing the prism carrier 120 and the surface of the prism carrier 120 facing the base 110 are both inclined structures and their inclination directions are parallel.

[0052] Please see Figure 2 In this embodiment, the magnetic attracting element 150 is embedded in the bottom wall of the groove 110a, and the magnetic conductive element 160 is embedded in the sphere 120a. It can be understood that in other embodiments, the magnetic attracting element 150 may also be embedded in the sphere 120a, and correspondingly, the magnetic conductive element 160 may be embedded in the bottom wall of the groove 110a.

[0053] Please see Figure 2 and Figure 3 In some embodiments, the first driving assembly 170 includes a first magnet 171 and a first coil 172. One of the first magnet 171 and the first coil 172 is disposed on the base 110 and located on the side of the groove 110a in the Z-axis direction, and the other is disposed on the prism carrier 120. When the first coil 172 is energized, a magnetic attraction force is generated between the first coil 172 and the first magnet 171 to drive the prism carrier 120 to rotate relative to the base 110 about the X-axis.

[0054] Therefore, the cooperation between the first magnet 171 and the first coil 172 can reduce the space occupied by the first drive component 170, which is beneficial to the miniaturization of the first drive component 170.

[0055] Please see Figure 3 and Figure 4 In this embodiment, the base 110 has a first bottom groove 110b on the side facing the prism carrier 120, the first coil 172 is disposed in the first bottom groove 110b, the prism carrier 120 has a first carrier groove 120b on the side facing the base 110, and the first magnet 171 is disposed in the first carrier groove 120b.

[0056] Therefore, the installation accuracy of the first coil 172 can be improved by the first bottom groove 110b, and the installation accuracy of the first magnet 171 can be improved by the first carrier groove 120b.

[0057] Understandably, in other embodiments, the first coil 172 may be disposed in the first carrier groove 120b, and correspondingly, the first magnet 171 may be disposed in the first bottom groove 110b.

[0058] Please see Figure 3 In some embodiments, the periscope drive module 100 further includes a first flexible member 190. A first coil 172 is sleeved on one end of the first flexible member 190 and is limited by the first flexible member 190. The other end of the first flexible member 190 protrudes from the first coil 172 and is used to hold the first magnet 171. Exemplarily, the first flexible member 190 can be a silicone component.

[0059] Therefore, the first flexible member 190 can flexibly support the first magnet 171 to avoid collision between the first magnet 171 and the first coil 172, which is beneficial to improving the service life of the first magnet 171 and the first coil 172.

[0060] Please see Figure 3 In some embodiments, the second drive assembly 180 includes a second magnet 181 and a second coil 182. One of the second magnet 181 and the second coil 182 is disposed on the base 110 and located on the side of the groove 110a in the X-axis direction, and the other is disposed on the prism carrier 120. When the second coil 182 is energized, a magnetic attraction force is generated between the second coil 182 and the second magnet 181 to drive the prism carrier 120 to rotate relative to the base 110 about the Z-axis.

[0061] Therefore, the cooperation of the second magnet 181 and the second coil 182 can reduce the space occupied by the second drive component 180, which is beneficial to the miniaturization of the second drive component 180.

[0062] Please see Figure 3 and Figure 4 In this embodiment, a second bottom groove 110c is provided on the side of the base 110 facing the prism carrier 120, and a second coil 182 is disposed in the second bottom groove 110c. A second carrier groove 120c is provided on the side of the prism carrier 120 facing the base 110, and a second magnet 181 is disposed in the second carrier groove 120c.

[0063] Therefore, the installation accuracy of the second coil 182 can be improved by the second bottom groove 110c, and the installation accuracy of the second magnet 181 can be improved by the second carrier groove 120c.

[0064] Understandably, in other embodiments, the second coil 182 may be disposed in the second carrier groove 120c, and correspondingly, the second magnet 181 may be disposed in the second bottom groove 110c.

[0065] Please see Figure 3 In some embodiments, the periscope drive module 100 further includes a second flexible member 191. A second coil 182 is sleeved on one end of the second flexible member 191 and is limited by the second flexible member 191. The other end of the second flexible member 191 protrudes from the second coil 182 and serves to hold the second magnet 181. Exemplarily, the second flexible member 191 can be a silicone component.

[0066] Therefore, the second flexible member 191 can flexibly support the second magnet 181 to avoid collision between the second magnet 181 and the second coil 182, which is beneficial to improving the service life of the second magnet 181 and the second coil 182.

[0067] In this embodiment, there are two sets of second driving components 180, which are disposed on opposite sides of the groove 110a in the X-axis direction. Correspondingly, there are two second bottom grooves 110c, two second carrier grooves 120c, and two second flexible members 191, and the two second bottom grooves 110c, the two second carrier grooves 120c, and the two second flexible members 191 are respectively arranged in a one-to-one correspondence.

[0068] Please see Figure 3 and Figure 4 In some embodiments, the periscope lens module 100 further includes two first elastic elements 192. The two first elastic elements 192 are located on opposite sides of the groove 110a in the X-axis direction, and the two ends of each first elastic element 192 are respectively connected to the base 110 and the prism carrier 120, and the elastic force direction of each first elastic element 192 is parallel to the Y-axis direction.

[0069] Therefore, the two first elastic elements 192 can pull the prism carrier 120 in the Z-axis direction to avoid the deviation of the prism carrier 120 relative to the base 110 in the Z-axis direction, thereby ensuring the positional accuracy of the prism carrier 120 relative to the base 110 in the Z-axis direction.

[0070] In this embodiment, one of the second coils 182 and the corresponding second flexible member 191 are located between the groove 110a and one of the first elastic members 192, and the other second coil 182 and the corresponding second flexible member 191 are located between the groove 110a and the other first elastic member 192.

[0071] In some embodiments, the periscope drive module 100 further includes two second elastic members 193. The two second elastic members 193 are located between the groove 110a and the prism carrier 120 and are spaced apart along the X-axis direction. The two ends of each second elastic member 193 are respectively connected to the base 110 and the prism carrier 120, and the elastic force direction of each second elastic member 193 is parallel to the X-axis direction.

[0072] Therefore, the two second elastic elements 193 can pull the prism carrier 120 in the X-axis direction to avoid the deviation of the prism carrier 120 relative to the base 110 in the X-axis direction, thereby ensuring the positional accuracy of the prism carrier 120 relative to the base 110 in the X-axis direction.

[0073] Please see Figure 2 and Figure 4 In this embodiment, the bottom of the base 110 is also provided with an assembly hole 110d, which facilitates the magnetic component 150 to pass through the assembly hole 110d and be assembled to the base 110.

[0074] Please see Figure 5This application embodiment also provides an image capturing mechanism 1000, including a lens assembly 200 and the periscope drive module 100 described above. The lens assembly 200 includes a lens mount 210 and a lens 220. The lens mount 210 is disposed on the side of the prism carrier 120 opposite to the base 110, and the lens 220 is disposed on the lens mount 210 and used to receive light reflected by the prism 130. Exemplarily, the image capturing mechanism 1000 can be a camera in an electronic device such as a mobile phone or tablet computer.

[0075] The periscope drive module 100 in the image capturing mechanism 100 reduces the deviation between the rotation center of the prism 130 and the optical axis center of the lens assembly 200 by rotating the ball 120a on the prism carrier 120 relative to the base 110, thereby reducing phase aberration and improving the imaging quality of the image capturing mechanism 1000. Furthermore, the ball 120a forms rolling contact with the base 110 through multiple ball bearings 140, reducing the space required for the prism carrier 120 to rotate, thus enabling a miniaturized design of the image capturing mechanism 1000.

[0076] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A periscope-type drive module, characterized in that, include: The base has a groove. A prism carrier is disposed opposite to the base, and the side of the prism carrier facing the base has a sphere that extends into the groove. A prism, disposed on the prism carrier, is used to reflect light; Multiple balls are rotatably disposed in the groove and spaced apart circumferentially along the groove, and each ball abuts against the bottom wall of the groove and the sphere respectively; The connecting component includes a magnetic attracting element and a magnetic guiding element. One of the magnetic attracting element and the magnetic guiding element is embedded in the bottom wall of the groove, and the other is embedded in the sphere. The magnetic attracting element and the magnetic guiding element are magnetically attracted to fix the prism carrier to the base. A first driving component is disposed on the prism carrier and the base, and is used to drive the prism carrier to rotate relative to the base about a first direction as an axis; and A second driving component is disposed on the prism carrier and the base and spaced apart from the first driving component along the first direction. The second driving component is used to drive the prism carrier to rotate relative to the base about a second direction as an axis, and the second direction is perpendicular to the first direction.

2. The periscope-type drive module as described in claim 1, characterized in that, The first driving component includes a first magnet and a first coil. One of the first magnet and the first coil is disposed on the base and located on the side of the groove in the second direction, and the other is disposed on the prism carrier. When the first coil is energized, a magnetic attraction force is generated between the first coil and the first magnet to drive the prism carrier to rotate relative to the base about the first direction as an axis.

3. The periscope-type drive module as described in claim 2, characterized in that, The base has a first bottom groove on the side facing the prism carrier, the first coil is disposed in the first bottom groove, the prism carrier has a first carrier groove on the side facing the base, and the first magnet is disposed in the first carrier groove.

4. The periscope-type drive module as described in claim 3, characterized in that, The periscope drive module also includes: The first flexible member has the first coil sleeved on one end to be limited by the first flexible member, and the other end of the first flexible member protrudes from the first coil to support the first magnet.

5. The periscope-type drive module as described in claim 1, characterized in that, The second driving component includes a second magnet and a second coil. One of the second magnet and the second coil is disposed on the base and located on the side of the groove in the first direction, and the other is disposed on the prism carrier. When the second coil is energized, a magnetic attraction force is generated between the second coil and the second magnet to drive the prism carrier to rotate relative to the base about the second direction as an axis.

6. The periscope-type drive module as described in claim 5, characterized in that, The base has a second bottom groove on the side facing the prism carrier, the second coil is disposed in the second bottom groove, the prism carrier has a second carrier groove on the side facing the base, and the second magnet is disposed in the second carrier groove.

7. The periscope-type drive module as described in claim 6, characterized in that, The periscope drive module also includes: The second flexible member has the second coil sleeved on one end to be limited by the second flexible member, and the other end of the second flexible member protrudes from the second coil to support the second magnet.

8. The periscope-type drive module as described in claim 1, characterized in that, The periscope drive module also includes: Two first elastic elements are located on opposite sides of the groove in the first direction. The two ends of each first elastic element are respectively connected to the base and the prism carrier, and the elastic force direction of each first elastic element is perpendicular to the first direction and the second direction.

9. The periscope-type drive module as described in claim 1, characterized in that, Also includes: Two second elastic elements are located between the groove and the prism carrier and are spaced apart along the first direction. The two ends of each second elastic element are respectively connected to the base and the prism carrier, and the elastic force direction of each second elastic element is parallel to the first direction.

10. An image-capturing mechanism, characterized in that, include: The periscope drive module as described in any one of claims 1 to 9; and A lens assembly includes a lens mount and a lens, the lens mount being disposed on the side of the prism carrier opposite to the base, and the lens being disposed on the lens mount and used to receive light reflected by the prism.

Images