WO2020118752A1

WO2020118752A1 - Bidirectional anti-shake reflection module and periscopic module group

Info

Publication number: WO2020118752A1
Application number: PCT/CN2018/122255
Authority: WO
Inventors: 谢荣富
Original assignee: 信利光电股份有限公司
Priority date: 2018-12-11
Filing date: 2018-12-20
Publication date: 2020-06-18
Also published as: CN109413317B; CN109413317A

Abstract

Provided are a bidirectional anti-shake reflection module (10) and a periscopic module group. The bidirectional anti-shake reflection module (10) comprises a fixed seat (101), a movable seat (102), a reflection mirror/reflection prism (103) and a first elastic sheet group (104), wherein the reflection mirror/reflection prism (103) is carried on the movable seat (102); and the movable seat (102) is connected to the fixed seat (101) via the first elastic sheet group (104) and is suspended inside the fixed seat (101). The bidirectional anti-shake reflection module further comprises: a first driving mechanism for driving the movable seat (102) to rotate around a light exit axis (Z) with the reflection mirror/reflection prism (103); and a second driving mechanism for driving the movable seat (102) to rotate around a central axis (Y) with the reflection mirror/reflection prism (103), wherein the light exit axis (Z) is vertical to the central axis (Y). The bidirectional anti-shake reflection module (10) can simultaneously realize the anti-shake function of the reflection mirror/reflection prism (103) in two directions.

Description

Bidirectional anti-shake reflection module and periscope module

[0001] The present invention relates to the field of imaging, and in particular to a bidirectional anti-shake reflection module and a periscope module.

Background technique

[0002] As users have higher and higher requirements for the shooting of mobile terminals such as mobile phones, the demand for periscope modules is also increasing, which is different from the wide-angle shooting of traditional CCM modules positioned at small focal lengths. The module is positioned for long-distance shooting with a large focal length, and its long-range shooting performance can reach the level of a professional camera. Therefore, if the CCM module and the periscope module are used together, they can play a good role in complementary functions.

[0003] The periscope module mainly includes a reflection module and a lens module. The reflection module reflects the imaging light at 90° and enters the lens module, and the lens module performs focusing and imaging. Currently, the periscope type For the anti-shake solution of the module, the reflection module is generally responsible for anti-shake in one direction, and the lens module is responsible for anti-shake in the other direction.

Summary of the invention

technical problem

Solution to the problem

Technical solution

[0004] The present invention provides a two-way anti-shake reflection module, which can simultaneously realize the anti-shake function of the mirror/reflection prism in two directions.

[0005] The present invention also provides a periscope module including the above two-way anti-shake reflection module.

[0006] The technical problem to be solved by the present invention is achieved by the following technical solutions:

[0007] A two-way anti-shake reflection module includes a fixed seat, a movable seat, a reflector/reflecting prism and a first shrapnel group, the reflector/reflecting prism is mounted on the movable seat, and the movable seat passes through The first shrapnel group is connected to the fixed base and suspended in the fixed base; further including:

[0008] a first driving mechanism for driving the movable seat to drive the mirror/reflecting prism to rotate around the optical axis

[0009] a second driving mechanism for driving the movable base to drive the mirror/reflecting prism to rotate about a central axis; [0010] wherein, the optical axis is perpendicular to the central axis.

[0011] Further, the first driving mechanism includes a first magnetic component disposed on the movable seat and a second magnetic component disposed on the fixed seat, wherein the first magnetic component and/or The electromagnetic field of the second magnetic component is variable, and the force of the first magnetic field between the first magnetic component and the second magnetic component drives the movable base to rotate around the optical axis.

[0012] Further, the first magnetic component includes two first electromagnetic coils, which are respectively disposed on both ends of the movable seat along the central axis; the second magnetic component includes two first permanent magnets, respectively It is arranged on both ends of the fixing seat along the central axis.

[0013] Further, the second driving mechanism includes a third magnetic component disposed on the movable seat and a fourth magnetic component disposed on the fixed seat, wherein the third magnetic component and/or The fourth magnetic component has a variable electromagnetic field, and the force of the second magnetic field between the third magnetic component and the fourth magnetic component drives the movable base to rotate around the central axis.

[0014] Further, the third magnetic component includes a second electromagnetic coil disposed on an end of the movable base along the optical axis Z facing away from the light emitting surface; the fourth magnetic component includes a second permanent magnet The magnet is disposed on an end of the fixing base that faces away from the light exit surface along the light exit axis.

[0015] A periscope module includes the above-mentioned two-way anti-shake reflection module and a focus lens module, and the light input end of the focusing lens module faces the light exit surface of the two-way anti-shake reflection module.

[0016] Further, the focus lens module includes a fixed bracket, a movable bracket, an optical lens, a focus drive mechanism and a second shrapnel group, the optical lens is mounted on the movable bracket, the movable bracket passes through the first Two shrapnel sets are connected to the fixed bracket and suspended in the fixed bracket; the focus driving mechanism is used to drive the movable bracket to drive the optical lens to translate along the optical axis of the lens.

[0017] Further, the focus driving mechanism includes a fifth magnetic component provided on the movable bracket and a sixth magnetic component provided on the fixed bracket, wherein the fifth magnetic component and/or the first The six magnetic components have variable electromagnetic fields, and the third magnetic field force between the fifth magnetic component and the sixth magnetic component drives the movable support to translate along the optical axis of the lens.

[0018] Further, the fifth magnetic component includes a third electromagnetic coil wound around the movable bracket; the sixth magnetic component includes two third permanent magnets, respectively located at the periphery of the third electromagnetic coil On both sides. Beneficial effects of invention

Beneficial effect

[0019] The present invention has the following beneficial effects: The two-way anti-shake reflection module integrates anti-shake functions in two directions, with the light incident plane as a reference plane for anti-shake, and the movable base rotates around the optical axis Correct the slant angle of the periscope module in one direction, and rotate the movable base around the central axis to correct the slant angle of the periscope module in the other direction, which is also suitable for closed-loop anti-shake solutions and Open-loop anti-shake solution.

Brief description of the drawings

BRIEF DESCRIPTION

[0020] FIG. 1 is a schematic diagram of a periscope module provided by the present invention;

[0021] FIG. 2 is an exploded view of a bidirectional anti-shake reflection module provided by the present invention;

[0022] FIG. 3 is a schematic view of the movable base in the bidirectional anti-shake reflection module rotating around the optical axis;

[0023] FIG. 4 is a schematic view of the movable base in the bidirectional anti-shake reflection module rotating around the central axis;

5 is a cross-sectional view of a focus lens module provided by the present invention.

Invention Example

Embodiments of the invention

[0025] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

Embodiment One

As shown in FIG. 2, a bidirectional anti-shake reflection module 10 includes a fixed base 101, a movable base 102, a reflector/reflecting prism 103, and a first shrapnel group 104, and the reflector/reflecting prism 103 is mounted on On the movable seat 102, the movable seat 102 is connected to the fixed seat 101 through the first shrapnel group 104 and suspended in the fixed seat 101; further including:

[0028] a first driving mechanism for driving the movable base 102 to drive the mirror/reflecting prism 103 to rotate around the optical axis Z;

[0029] a second driving mechanism for driving the movable base 102 to drive the mirror/reflecting prism 103 to rotate about the central axis Y;

[0030] Wherein, the central axis Y is perpendicular to the optical axis Z and the optical axis X. [0031] The bidirectional anti-shake reflection module 10 integrates anti-shake functions in two directions, with the incident light plane YZ (the plane perpendicular to the optical axis X) as a reference plane for anti-shake, which is wound around by the movable base 102 The optical axis Z rotates to correct the slant angle of the periscope module in one direction, and the movable base 102 rotates around the central axis Y to correct the slant angle of the periscope module in the other direction. It is applicable to both closed-loop anti-shake solutions and open-loop anti-shake solutions.

[0032] The bidirectional anti-shake reflection module 10 is used in conjunction with a focus lens module 20 to form a complete periscope module.

[0033] The first connecting end on the first shrapnel group 104 for connecting the movable base 102 has a first rotation about the optical axis Z relative to the second connecting end for connecting the fixed base 101 Degrees of freedom, and a second degree of freedom of rotation about the central axis Y; the plane of the shrapnel of the first shrapnel group 104 is perpendicular to the optical axis X.

[0034] In this embodiment, the first shrapnel group 104 is composed of eight first shrapnels, four of which connect the four corners of the movable base 102 to the end at one end along the optical axis X The other four pieces of the fixed base 101 connect the four corners of the movable base 102 to the fixed base 101 at the other end along the optical axis X; each first elastic piece includes the first connecting end , A second connecting end and a first elastic wire connected between the first connecting end and the second connecting end, the force deformation of the first elastic wire deforms the first elastic piece group 104 to provide the first One degree of freedom of rotation and the second degree of freedom of rotation.

[0035] As shown in FIG. 3, the first driving mechanism includes a first magnetic component 1051 disposed on the movable base 102 and a second magnetic component 1052 disposed on the fixed base 101, wherein The electromagnetic field of the first magnetic component 1051 and/or the second magnetic component 1052 is variable, and the force of the first magnetic field between the first magnetic component 1051 and the second magnetic component 1052 drives the movable base 102 around the The optical axis Z rotates.

[0036] In this embodiment, the first magnetic assembly 1051 includes two first electromagnetic coils, the second magnetic assembly 1052 includes two first permanent magnets, and the two first electromagnetic coils are respectively disposed on the movable seat 102 are along both ends of the central axis Y and the coil plane of the first electromagnetic coil is perpendicular to the central axis Y, the two first permanent magnets are also provided on the fixing base 101 along the central axis Y On both ends, there is a one-to-one correspondence between the first electromagnetic coil and the first permanent magnet; the polar direction of the first permanent magnet is parallel to the optical axis X, and the polar direction of the first electromagnetic coil Parallel to the central axis Y.

[0037] The first electromagnetic coil is electrically connected to the corresponding first elastic piece in the first elastic piece group 104, and electrically connected to an external power source through the first circuit board 106 electrically connected to the first elastic piece to obtain Drive current. [0038] As shown in FIG. 4, the second driving mechanism includes a third magnetic component 1053 disposed on the movable base 102 and a fourth magnetic component 1054 disposed on the fixed base 101, wherein The third magnetic component 1053 and/or the fourth magnetic component 1054 are variable in electromagnetic field, and the force of the second magnetic field between the third magnetic component 1053 and the fourth magnetic component 1054 drives the movable base 102 around the The central axis Y rotates.

[0039] In this embodiment, the third magnetic component 1053 includes a second electromagnetic coil, the fourth magnetic component 1054 includes a second permanent magnet, and the second electromagnetic coil is disposed along the movable base 102 The light emitting axis Z is on an end facing away from the light emitting surface and the coil plane is parallel to the XY plane. The second permanent magnet is also provided on the end of the fixing base 101 along the light emitting axis Z facing away from the light emitting surface. The second electromagnetic coil corresponds; the polar direction of the second permanent magnet is parallel to the optical axis X, and the polar direction of the second electromagnetic coil is parallel to the optical axis Z.

[0040] The second electromagnetic coil is electrically connected to a corresponding first elastic piece in the first elastic piece group 104, and electrically connected to an external power source through a first circuit board 106 electrically connected to the first elastic piece to obtain Drive current.

[0041] The first shrapnel group 104 provides the movable seat 102 with a first resilience force that resets around the optical axis Z, and a second resilience force that resets around the central axis Y. The first rebound force and the first magnetic field force act on the movable base 102 together, so that the movable base 102 drives the mirror/reflecting prism 103 to stay at a first rotation angle around the optical axis Z The second resilient force and the second magnetic field acting on the movable seat 102 together, so that the movable seat 102 drives the mirror/reflecting prism 103 to stay on the second around the central axis Y Turn angle.

[0042] In this embodiment, the fixed base 101 includes a mounting base 1011 for accommodating the movable base 102 and the reflector/reflecting prism 103 and the first elastic sheet group 104, and a set of A first metal shell 1012 outside the mounting base 1011, the mounting base 1011 and the first metal shell 1012 are provided with light passage openings on the sides corresponding to the light entrance surface and the light exit surface for the entrance and exit of imaging light In addition, the assembly seat 1011 also has an assembly opening on the side corresponding to the first permanent magnet and the second permanent magnet, for fixing the first permanent magnet and the second permanent magnet on the first The inner surface of the metal casing 1012.

[0043] The movable base 102 is substantially a quadrangular prism shape, which is provided with an assembling groove for assembling and fixing the reflector/reflecting prism 103, the assembling groove is generally a triangular prism shape; The side surfaces corresponding to the light entrance surface and the light exit surface are also provided with light communication ports that communicate with the assembly groove.

[0044] The incident surface and the exit surface of the reflecting prism 103 are perpendicular to each other, and the reflecting surface and the incident surface are respectively Both form an angle of 45° with the exit surface to reflect the imaging light incident from the incident surface by 90° and exit from the exit surface.

Embodiment 2

[0046] As shown in FIG. 1, a periscope module includes the bidirectional anti-shake reflection module 10 and the focus lens module 20 described in the first embodiment, and the light incident end of the focus lens module 20 faces the The light exit surface of the two-way anti-shake reflection module 10 can be connected and assembled with the two-way anti-shake reflection module 10 by bonding, snapping, pinning or screwing.

[0047] The imaging light enters from the light incident surface of the bidirectional anti-shake reflection module 10, is reflected 90° in the bidirectional anti-shake reflection module 10, and enters the focusing lens module 20, and finally focuses on the The sensor module 30 on the rear of the light exit surface of the lens module 20 performs imaging.

[0048] As shown in FIG. 5, the focus lens module 20 is used to implement a focus function on the optical axis Z of the lens, and includes a fixed bracket 202, a movable bracket 201, an optical lens 203, a focus driving mechanism, and a second elastic sheet group 206, The optical lens 203 is mounted on the movable bracket 201, and the movable bracket 201 is connected to the fixed bracket 202 through the second elastic sheet group 206 and suspended in the fixed bracket 202; for the focus driving mechanism When the movable bracket 201 is driven, the optical lens 203 is translated along the optical axis Z of the lens.

[0049] The third connecting end for connecting the movable bracket 201 on the second shrapnel group 206 has a translation freedom along the lens optical axis Z relative to the fourth connecting end for connecting the fixed bracket 202 Degrees; the shrapnel plane of the second shrapnel group 206 is perpendicular to the lens optical axis Z.

[0050] In this embodiment, the second elastic sheet group 206 is composed of an upper elastic sheet and two lower elastic sheets, wherein the upper elastic sheet connects the movable bracket 201 to one end along the optical axis Z of the lens The fixed bracket 202, the two lower elastic pieces connect the movable bracket 201 to the fixed bracket 202 at the other end along the optical axis Z of the lens; both the upper elastic piece and the lower elastic piece include the first Three connection ends, a fourth connection end, and a second elastic wire connection between the third connection end and the fourth connection end, the force deformation of the second elastic wire is provided by the second elastic piece group 206 Freedom of translation along the optical axis Z of the lens.

[0051] The focus driving mechanism includes a fifth magnetic component 204 provided on the movable bracket 201 and a sixth magnetic component 205 provided on the fixed bracket 202, wherein the fifth magnetic component 204 and/or Or the sixth magnetic component 205 can change the electromagnetic field, and the third magnetic field force between the fifth magnetic component 204 and the sixth magnetic component 205 drives the movable support 201 to translate along the lens optical axis Z. [0052] In this embodiment, the fifth magnetic component 204 includes a third electromagnetic coil, the sixth magnetic component 20 05 includes two third permanent magnets, the third electromagnetic coil is wrapped around the movable support 201 In addition, and the coil plane of the third electromagnetic coil is perpendicular to the lens optical axis Z, and the polar direction is parallel to the lens optical axis Z; the two third permanent magnets are located at the periphery of the third electromagnetic coil, respectively On both sides, and the polar direction is perpendicular to the lens optical axis Z.

[0053] The third electromagnetic coil is electrically connected to the lower spring piece in the second spring piece group 206, and is electrically connected to an external power source through a metal pin electrically connected to the lower spring piece to obtain a driving current.

[0054] In this embodiment, the first circuit board 106 and the metal pins are electrically connected to the second circuit board 301 on which the sensor chip is mounted in the sensor module 30.

[0055] In this embodiment, the fixed bracket 202 includes an assembly bracket for accommodating the movable bracket 201 and the optical lens 203 and the second elastic sheet group 206, and a set of assembly brackets provided on the assembly bracket An outer second metal shell, the mounting bracket and the second metal shell are provided with light openings on the sides corresponding to the light input end and the light output end, for the incidence and exit of imaging light, in addition, the mounting bracket is provided at The side corresponding to the third permanent magnet is also provided with an assembly port for fixing the third permanent magnet on the inner side of the second metal shell.

[0056] The above-mentioned examples only express the implementation of the present invention, the description is more specific and detailed, but it should not be construed as a limitation of the patent scope of the present invention, which is obtained in the form of equivalent replacement or equivalent transformation All technical solutions should fall within the protection scope of the present invention.

Claims

[Claim 1] A two-way anti-shake reflection module, including a fixed seat, a movable seat, a reflector/reflecting prism, and a first shrapnel group, the reflector/reflecting prism is mounted on the movable seat, the movable seat Connected to the fixed base through the first elastic sheet group and suspended in the fixed base; characterized in that it further includes:

A first driving mechanism for driving the movable base to drive the mirror/reflecting prism to rotate around the optical axis;

A second driving mechanism for driving the movable base to drive the mirror/reflecting prism to rotate around the central axis;

Wherein, the central axis is perpendicular to the optical axis and the optical axis.

[Claim 2] The two-way anti-shake reflection module according to claim 1, wherein the first driving mechanism includes a first magnetic component provided on the movable seat and a provided on the fixed seat A second magnetic component, wherein the first magnetic component and/or the second magnetic component are variable in electromagnetic field, and the first magnetic field force between the first magnetic component and the second magnetic component drives the movable base around The optical axis rotates.

[Claim 3] The two-way anti-shake reflection module according to claim 2, wherein the first magnetic component includes two first electromagnetic coils, which are respectively disposed at both ends of the movable seat along the central axis The second magnetic component includes two first permanent magnets, which are respectively disposed on both ends of the fixing base along the central axis.

[Claim 4] The two-way anti-shake reflection module according to any one of claims 1-2, characterized in that the second driving mechanism includes a third magnetic component provided on the movable seat and a A fourth magnetic component on the fixed base, wherein the third magnetic component and/or the fourth magnetic component are variable in electromagnetic field, and the second magnetic field between the third magnetic component and the fourth magnetic component is driven by a force The movable seat rotates around the central axis.

[Claim 5] The bidirectional anti-shake reflection module according to claim 4, wherein the third magnetic component includes a second electromagnetic coil, which is disposed at the movable base and emits light away from the optical axis Z On one end of the surface; the fourth magnetic component includes a second permanent magnet disposed on an end of the fixing base facing away from the light-emitting surface along the light-emitting axis.

[Claim 6] A periscope module, characterized by comprising the bidirectional anti-shake reflection module and the focusing lens module according to any one of claims 1-5, the light incident end of the focusing lens module facing The light exit surface of the bidirectional anti-shake reflection module.

[Claim 7] The periscope module according to claim 6, wherein the focus lens module includes a fixed bracket, a movable bracket, an optical lens, a focus driving mechanism, and a second elastic sheet group, the optical lens Mounted on the movable bracket, the movable bracket is connected to the fixed bracket through the second elastic sheet group and suspended in the fixed bracket; the focus driving mechanism is used to drive the movable bracket to drive the optical The lens is translated along the lens optical axis.

[Claim 8] The periscope module according to claim 7, wherein the focus driving mechanism includes a fifth magnetic component provided on the movable bracket and a third magnetic component provided on the fixed bracket Six magnetic components, wherein the fifth magnetic component and/or the sixth magnetic component have variable electromagnetic fields, and a third magnetic field force between the fifth magnetic component and the sixth magnetic component drives the movable support along The lens optical axis is translated.

[Claim 9] The periscope module according to claim 8, wherein the fifth magnetic component includes a third electromagnetic coil wound around the movable bracket; the sixth magnetic component includes Two third permanent magnets are respectively located on two sides of the periphery of the third electromagnetic coil.