Dual-barrel optical device and its anti-shake module

Abstract

A dual-lens optical device includes an image stabilization module, a first lens barrel, a first lens group, a second lens barrel, and a second lens group. The image stabilization module includes a first image stabilization mechanism and a second image stabilization mechanism. The first image stabilization mechanism is disposed in the first lens barrel, and the first lens group is disposed in the first lens barrel and has a first optical axis. Light passes through the first lens group to form a first image, and the first lens group includes a first lens element. The second image stabilization mechanism is disposed in the second lens barrel, and the second lens group is disposed in the second lens barrel and has a second optical axis. Light passes through the second lens group to form a second image, and the second lens group includes a second lens element. The first and second lens barrels are relatively movable to change the distance between the first and second optical axes. By activating or deactivating the compensation mode or moving the first or second image stabilization mechanism, the first image and the second image are made parallax-free.

Description

Technical Field

[0001] This invention relates to the technical field of optical anti-shake technology for a dual-lens optical device, and particularly to a dual-lens optical device and its anti-shake module. Background Technology

[0002] Existing binoculars that adjust the lens distance according to the user's eye width include a first image stabilization mechanism OIS1 and a second image stabilization mechanism OIS2. The first image stabilization mechanism OIS1 senses the movement of the first lens barrel of the binoculars according to a coordinate system (XY coordinate system) to drive the first lens of the first lens group to move along the X-axis and Y-axis directions, thereby compensating for the image of the first lens group. The second image stabilization mechanism OIS2 senses the movement of the second lens barrel of the binoculars according to another coordinate system (X'-Y' coordinate system) to drive the second lens of the second lens group to move along the X'-axis and Y'-axis directions, thereby compensating for the image of the second lens group.

[0003] Please see Figure 1 When the shaking of the binoculars exceeds the maximum compensation range of the first and second image stabilization mechanisms OIS1 and OIS2, corresponding to the theoretically target position P where both mechanisms compensate for the movement of the first lens, OIS1 and OIS2 can only move the first lens to the limit position P1 for shake compensation, and OIS2 similarly only moves the second lens to the limit position P2. Because the coordinate systems used by OIS1 and OIS2 differ, the limit positions P1 and P2 deviate from each other. Thus, the first and second lenses move in different directions, causing differences in the images formed by the first and second lens groups. This results in parallax for the user, easily causing dizziness and other discomfort. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a dual-lens optical device and its anti-shake module, which solves the problem of avoiding parallax in the image formed at the user's eyes when the shaking of the dual-lens optical device exceeds the maximum compensation range of the first anti-shake mechanism and the second anti-shake mechanism.

[0005] An embodiment of the anti-shake module of the present invention includes a first anti-shake mechanism and a second anti-shake mechanism. The first anti-shake mechanism includes a plurality of first sensors and a first compensation component. The first compensation component drives a first lens to compensate along a first direction. The first sensors are arranged in a direction parallel to a first optical axis, and one of the first sensors detects a first positional change of the first lens in the first direction. The second anti-shake mechanism includes a second sensor and a second compensation component. The second compensation component drives a second lens to compensate along a second direction. The second sensor detects a second positional change of the second lens in the second direction. When the first positional change or the second positional change is greater than a first threshold, the first compensation component stops driving the first lens to compensate, and the second compensation component stops driving the second lens to compensate. When the first positional change or the second positional change is less than the second threshold, the first compensation component starts driving the first lens to compensate, and the second compensation component starts driving the second lens to compensate, where the first threshold is greater than the second threshold.

[0006] In another embodiment, the first compensation component drives the first compensation component to perform compensation with a first maximum position compensation amount, the second compensation component drives the second compensation component to perform compensation with a second maximum position compensation amount, the first threshold is greater than the first maximum position compensation amount and greater than the second maximum position compensation amount, and the second threshold is less than the first maximum position compensation amount and less than the second maximum position compensation amount.

[0007] In another embodiment, the first threshold and the second threshold are adjustable.

[0008] A first embodiment of the dual-lens optical device of the present invention includes the aforementioned anti-shake module, a first lens barrel, a first lens group, a second lens barrel, a second lens group, and a control module. A first anti-shake mechanism is disposed in the first lens barrel. The first lens group is disposed in the first lens barrel and has a first optical axis. Light passes through the first lens group to form a first image. The first lens group includes a first lens element. A second anti-shake mechanism is disposed in the second lens barrel. The second lens group is disposed in the second lens barrel and has a second optical axis. Light passes through the second lens group to form a second image. The second lens group includes a second lens element. The control module is electrically connected to the first and second anti-shake mechanisms. The control module compares a first position variation and a second position variation with a first threshold and a second threshold to control the first and second anti-shake mechanisms. The first and second lens barrels are relatively movable to change the distance between the first and second optical axes, and there is no parallax between the first and second images.

[0009] Another embodiment of the anti-shake module of the present invention includes a first anti-shake mechanism, a second anti-shake mechanism, and a movable adjustment member. The first anti-shake mechanism is disposed in a first lens barrel and has a first optical axis. It includes a plurality of first sensors and a first compensation component. The first compensation component drives a first lens to compensate along a first direction formed by the combination of a first compensation direction and a second compensation direction. The first sensors are arranged in a direction parallel to the first optical axis, wherein the first compensation direction is orthogonal to the second compensation direction. The second anti-shake mechanism is disposed in a second lens barrel and has a second optical axis. It includes a second sensor and a second compensation component. The second compensation component drives a second lens to compensate along a second direction formed by the combination of a third compensation direction and a fourth compensation direction, wherein the third compensation direction is orthogonal to the fourth compensation direction. The movable adjustment member is connected to either the first or second anti-shake mechanism. A first gap exists between the first and second optical axes. When the gap between the first and second optical axes is greater than or less than the first gap, the movable adjustment member moves, causing either the first or second anti-shake mechanism to move until the first compensation direction is parallel to the third compensation direction.

[0010] In another embodiment, the movable adjustment member is connected to the second anti-shake mechanism, and the first sensor includes a first angular velocity sensor, and the second sensor includes a second angular velocity sensor or does not include an angular velocity sensor. In one of these embodiments, the first sensor detects a first positional change of the first lens in a first direction, and the second sensor detects a second positional change of the second lens in the second direction. When the first positional change or the second positional change is greater than a first threshold, the first compensation component stops driving the first lens to compensate and the second compensation component stops driving the second lens to compensate. When the first positional change or the second positional change is less than a second threshold, the first compensation component starts driving the first lens to compensate and the second compensation component starts driving the second lens to compensate, and the first threshold is greater than the second threshold.

[0011] A second embodiment of the dual-lens optical device of the present invention includes the aforementioned anti-shake module, a first lens barrel, a first lens group, a second lens barrel, and a second lens group. A first anti-shake mechanism is disposed in the first lens barrel, and the first lens group is disposed in the first lens barrel and has a first optical axis. Light passes through the first lens group to form a first image, and the first lens group includes a first lens element. A second anti-shake mechanism is disposed in the second lens barrel, and the second lens group is disposed in the second lens barrel and has a second optical axis. Light passes through the second lens group to form a second image, and the second lens group includes a second lens element. The first and second lens barrels are relatively movable to change the distance between the first and second optical axes, and there is no parallax between the first and second images.

[0012] In another embodiment, the movable adjustment member is connected to the second anti-shake mechanism, and the first sensor includes a first angular velocity sensor, and the second sensor includes a second angular velocity sensor or does not include an angular velocity sensor.

[0013] In another embodiment, the movable adjustment member includes a support cylinder and an operating ring. The support cylinder is connected to the first lens barrel or the second lens barrel, and the operating ring is connected to the support cylinder and rotatably disposed on the outer peripheral surface of the first lens barrel or the second lens barrel. The operation ring rotates in conjunction with the support cylinder to rotate the first lens barrel or the second lens barrel, thereby moving the first anti-shake mechanism or the second anti-shake mechanism.

[0014] In another embodiment, it further includes a drive member that drives the carrier cylinder to rotate.

[0015] In another embodiment, the first sensor includes a first angle sensor and a first position sensor, which are disposed on different components arranged along the first optical axis; the second sensor includes a second angle sensor and a second position sensor, which are disposed on different components arranged along the second optical axis.

[0016] The dual-lens optical device and its anti-shake module of the present invention stop driving the first and second lenses to compensate when the shaking of the dual-lens optical device exceeds the maximum compensation range of the first threshold for the positional change of the first lens detected by the first anti-shake mechanism or the second threshold for the positional change of the second lens detected by the second anti-shake mechanism. Moreover, the optical axis of the first lens is made to coincide with the first optical axis of the first lens group, and the optical axis of the second lens is made to coincide with the second optical axis of the second lens group, thereby avoiding parallax between the first image formed by the first lens group and the second image formed by the second lens group of the dual-lens optical device.

[0017] The dual-lens optical device and its anti-shake module of the present invention, by setting an adjustment and moving member, moves the first anti-shake mechanism or the second anti-shake mechanism until the first compensation direction is parallel to the third compensation direction. The first anti-shake mechanism and the second anti-shake mechanism respectively drive the first lens and the second lens to compensate synchronously in the same direction to the same limit position, and also avoid parallax between the first image formed by the first lens group and the second image formed by the second lens group of the dual-lens optical device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram illustrating how the two anti-shake mechanisms of a prior art binocular produce different compensation directions for the lens modules of the two tubes when the shaking exceeds the maximum compensation range.

[0019] Figure 2a These are cross-sectional views of two sections of the first embodiment of the anti-shake module of the present invention.

[0020] Figure 2bThis is a schematic diagram illustrating the selection of compensation or non-compensation at various stages of different shaking states in the dual-lens optical device according to the first embodiment of the anti-shake module of the present invention.

[0021] Figure 3 This is a flowchart illustrating how the compensation conditions are changed by adjusting the first and second thresholds of the first and second anti-shake mechanisms in the first embodiment of the anti-shake module of the present invention.

[0022] Figure 4 This is a top view and two cross-sectional views of a second embodiment of the dual-lens optical device and its anti-shake module of the present invention.

[0023] Figure 5 This is a top view and two cross-sectional views of the third embodiment of the dual-lens optical device and its anti-shake module of the present invention. Detailed Implementation

[0024] Please see Figure 2a and Figure 2b This diagram illustrates a first embodiment of the dual-tube optical device and its anti-shake module of the present invention. The dual-tube optical device 1 of this embodiment includes an anti-shake module 10, a first tube 20, a first lens group (not shown), a second tube 30, a second lens group (not shown), and a control module (not shown). The first tube 20 has a first optical axis O1, and the second tube 30 has a second optical axis O2. The first optical axis O1 and the second optical axis O2 are perpendicular to the plane of the paper in the diagram.

[0025] The anti-shake module 10 includes a first anti-shake mechanism 11 and a second anti-shake mechanism 12. The first anti-shake mechanism 11 is disposed on the first lens barrel 20, and a first lens group is disposed on the first lens barrel and has a first optical axis. Light passes through the first lens group to form a first image, and the first lens group includes a first lens element. The second anti-shake mechanism 12 is disposed on the second lens barrel 30, and a second lens group is disposed on the second lens barrel and has a second optical axis. Light passes through the second lens group to form a second image, and the second lens group includes a second lens element. The first lens barrel 20 and the second lens barrel 30 rotate relative to each other about a pivot F to change the distance between the first and second optical axes, thus adjusting the distance between the user's eyes so that the user's eyes can view the first image and the second image separately.

[0026] The first anti-shake mechanism 11 includes multiple first sensors 111 and a first compensation component 112. The first sensor 111 includes a first angular velocity sensor 111a, a first angle sensor 111b, and a first position sensor 111c. In this embodiment, the first angular velocity sensor 111a is an electronic gyroscope, the first angle sensor 111b is an accelerometer (G-sensor), and the first position sensor 111c is a Hall sensor. The first angular velocity sensor 111a and the first angle sensor 111b are disposed on the circuit board C1, and the first position sensor 111c is disposed on the same plane as the first compensation component 112. The circuit board C1 and the first compensation component 112 are arranged along the first optical axis O1. That is, the first angular velocity sensor 111a, the first angle sensor 111b, and the first position sensor 111c are disposed on different components and arranged along the first optical axis O1. In this way, the first sensor 111 and the first compensation component 112 are disposed on different planes, which can help reduce the diameter of the first lens barrel 20, thereby facilitating the miniaturization of the dual-lens optical device 1. The first sensor 111 detects a first positional variation of the first lens in the first direction D1 according to the first coordinate system (XY coordinate system). The first direction D1 can be a direction that has a predetermined angle with the X-axis and Y-axis of the first coordinate system. The first positional variation can be a positional variation and / or an angular variation. The first compensation component 112 drives the first lens to compensate along the first direction D1. The first compensation component 112 includes a first compensation element 112a that causes the first lens to generate a first displacement vector V1 in the first compensation direction D11 and a second compensation element 112b that causes the first lens to generate a second displacement vector V2 in the second compensation direction D12. The first compensation element 112a and the second compensation element 112b include, for example, a coil and a magnet. The magnet is combined with the first lens. The magnetic field generated by the current flowing through the coil interacts with the magnetic field of the magnet to generate the first displacement vector V1 along the first compensation direction D11 and the second displacement vector V2 along the second compensation direction D12. The first displacement vector V1 and the second displacement vector V2 combine to form the first direction D1, that is, the first compensation component 112 moves the first lens along the first direction D1. The first compensation direction D11 is orthogonal to the second compensation direction D12, and the two first coordinate axes (X-axis and Y-axis) of the first coordinate system are perpendicular to the first optical axis and parallel to the first compensation direction D11 and the second compensation direction D12, respectively.

[0027] The second anti-shake mechanism 12 includes at least a second sensor 121 and a second compensation component 122. The second sensor 121 includes a second angular velocity sensor 121a, a second angle sensor 121b, and a second position sensor 121c. In this embodiment, the second angular velocity sensor 121a is an electronic gyroscope, the second angle sensor 121b is an accelerometer, and the second position sensor 121c is a Hall sensor. The second angular velocity sensor 121a and the second angle sensor 121b are disposed on another circuit board C2, and the second position sensor 121c is disposed on the second compensation component 122. The circuit board C2 and the second compensation component 122 are arranged along the second optical axis O2. That is, the second angular velocity sensor 121a, the second angle sensor 121b, and the second position sensor 121c are disposed on different components and arranged along the second optical axis O2. Thus, the second sensor 121 and the second compensation component 122 are disposed on different planes, which can help reduce the diameter of the second lens barrel 30, thereby facilitating the miniaturization of the dual-lens optical device 1. The second sensor 121 detects a second positional variation of the second lens in the second direction D2 according to the second coordinate system (X'-Y' coordinate system). The second direction D2 can be a direction that has a predetermined angle with the X' and Y' axes of the second coordinate system. The second positional variation can be a positional variation and / or an angular variation. The second compensation component drives the second lens to compensate along the second direction D2. The second compensation component 122 includes a third compensation element 122a that generates a third displacement vector of the second lens in the third compensation direction D21 and a fourth compensation element 122b that generates a fourth displacement vector of the second lens in the fourth compensation direction D22. The third compensation element 122a and the fourth compensation element 122b include, for example, a coil and a magnet. The magnet is combined with the second lens. The magnetic field generated by the current flowing through the coil interacts with the magnetic field of the magnet to generate a third displacement vector V3 along the third compensation direction D21 and a fourth displacement vector V4 along the fourth compensation direction D22. The third displacement vector V3 and the second displacement vector combine to form a first direction D1, that is, to move the second lens along the second direction D2. The third compensation direction D21 is orthogonal to the fourth compensation direction D22, and the two second coordinate axes (X' axis and Y' axis) of the second coordinate system are perpendicular to the second optical axis and parallel to the third compensation direction D21 and the fourth compensation direction D22, respectively.

[0028] It should be noted that the first position sensor 111c is used to detect the positions of the first compensation member 112a and the second compensation member 112b, therefore Figure 2a The labels indicate the same position. In reality, the first position sensor 111c, the first compensation member 112a, and the second compensation member 112b only need to correspond in position along the optical axis; they don't necessarily need to be on the same plane. Similarly, since the second position sensor 121c is used to detect the positions of the third compensation member 122a and the fourth compensation member 112b, therefore... Figure 2a The second position sensor 121c, the third compensation member 122a, and the fourth compensation member 122b are only required to be positioned along the optical axis, not necessarily on the same plane.

[0029] This explains that the first direction D1 and the second direction D2 are direction vectors obtained according to the first coordinate system and the second coordinate system, respectively, and they actually point in the same direction.

[0030] The control module is electrically connected to the first anti-shake mechanism 11 and the second anti-shake mechanism 12. The first position change detected by the multiple first sensors 11 of the first anti-shake mechanism 11 and the second position change detected by the multiple second sensors 12 of the second anti-shake mechanism 12 are transmitted to the control module. Figure 3 This indicates the change in the first or second position over time.

[0031] When the user rotates the first lens barrel 20 and the second lens barrel 30 to match the distance between the user's eyes, the first coordinate system and the second coordinate system will not coincide. Thus, the first direction D1 and the second direction D2 will have different vector values, but they are essentially the same direction. When the jitter of the first lens barrel 20 is not greater than the first maximum position compensation amount and the jitter of the second lens barrel 30 is not greater than the second maximum position compensation amount, the first compensation module 112 and the second compensation module 122 respectively cause the first lens and the second lens to compensate in the same direction, and the compensation is reliably accurate.

[0032] like Figure 2b As shown, when the first angular velocity sensor 111a and the second angular velocity sensor 121a detect that the jitter of the first lens barrel 20 is greater than the first maximum position compensation amount or the jitter of the second lens barrel 30 is greater than the second maximum position compensation amount, ( Figure 3 In this context, LM1 represents either the first maximum position compensation amount or the second maximum position compensation amount. This indicates that the jitter of the dual-lens optical device 1 has exceeded the maximum compensation range of the first anti-shake mechanism 11 and the second anti-shake mechanism 12. In this case, the final target compensation position may differ due to limitations imposed by the maximum compensation amounts of the first compensation module 112 and the second compensation module 122. The control module then compares the first and second position variations with a first threshold TH1. When either the first or second position variation exceeds the first threshold TH1, the control module controls the first anti-shake mechanism 11 to stop compensating for the movement of the first lens and the second anti-shake mechanism 12 to stop compensating for the movement of the second lens. Furthermore, it aligns the optical axis of the first lens with the first optical axis of the first lens group, and simultaneously aligns the optical axis of the second lens with the second optical axis of the second lens group. Thus, the first image formed by the first lens group and the second image formed by the second lens group become a state of parallax-free or substantially synchronous movement.

[0033] When the first angular velocity sensor 111a and the second angular velocity sensor 121a detect that the jitter of the first lens barrel 20 is greater than the first maximum position compensation amount or the jitter of the second lens barrel 30 is less than the second maximum position compensation amount, ( Figure 3 In this diagram, LM1 represents either the first maximum position compensation amount or the second maximum position compensation amount, indicating that the jitter of the dual-lens optical device 1 has returned to the maximum compensation range of the first anti-shake mechanism 11 and the second anti-shake mechanism 12. At this time, the control module compares the first position variation amount and the second position variation amount with the second threshold TH2. When the first position variation amount or the second position variation amount is less than the second threshold TH2, the control module controls the first anti-shake mechanism 11 to start compensating for the movement of the first lens and controls the second anti-shake mechanism 12 to start compensating for the movement of the second lens. Thus, the first image formed by the first lens group and the second image formed by the second lens group also become a state of parallax-free or substantially synchronous movement.

[0034] In this embodiment, the first threshold TH1 is greater than the first maximum position compensation amount LM1 (or the second maximum position compensation amount), and the second threshold TH2 is less than the first maximum position compensation amount LM1 (or the second maximum position compensation amount). That is, the first threshold TH1 is greater than the second threshold TH2, thus ensuring that the first anti-shake mechanism 11 and the second anti-shake mechanism 12 will not frequently change between the two modes of stopping compensation and starting compensation.

[0035] like Figure 3 As shown, the anti-shake module 10 of this embodiment can have different implementation procedures depending on whether it switches between the start compensation mode and the stop compensation mode. In step S1, the first sensor 111 and the second sensor 121 detect displacement and angular velocity to determine the position change amount (shake degree), and then proceed to step S2. In step S2, it is selected whether to switch between the start compensation mode and the stop compensation mode. If it is selected to switch, it proceeds to step S3. If it is selected not to switch, it proceeds to step S4. In step S3, a first threshold TH1 and a second threshold TH2 are set, and then it proceeds to step S4. In step S4, the first position change amount and the second position change amount are compared with the first threshold TH1 or the second threshold TH2, and then proceeds to step S5. In step S5, the anti-shake module 10 switches between the start compensation mode and the stop compensation mode according to the comparison result of step S4, and then proceeds to step S6. In step S6, the anti-shake module 10 drives the first lens and the second lens to move to compensate for the first image and the second image.

[0036] The first threshold TH1 and the second threshold TH2 can be set to different values ​​according to different usage scenarios. Different modes can be switched according to the user. When the mode is switched, the switching conditions between the start compensation mode and the stop compensation mode will be adjusted so that the anti-shake module 10 has a larger compensation angle, making the image more stable, or easier to switch to the moving state, avoiding dizziness due to slight movement.

[0037] Please see Figure 4 This indicates a second embodiment of the dual-tube optical device and its anti-shake module of the invention. This embodiment has some of the same structure as the first embodiment, and the same components are given the same reference numerals and their descriptions are omitted. The difference between this embodiment and the first embodiment is that the anti-shake module 10' of this embodiment further includes a movable adjustment member 40. The movable adjustment member 40 includes a support cylinder 41 and an operating ring 42. The support cylinder 41 is connected to the second lens barrel 30, and the second anti-shake mechanism 12 is connected to the second lens barrel 30. The operating ring 41 is connected to the support cylinder 42 and is rotatably disposed on the outer peripheral surface of the second lens barrel 30. The user can manually rotate or drive the operating ring 41 via a driver (e.g., a motor triggered by a switch) to drive the support cylinder 42 to rotate the second lens barrel 30, thereby moving the second anti-shake mechanism 12 in a circumferential direction.

[0038] As mentioned earlier, the user rotates the first lens barrel 20 and the second lens barrel 30 relative to each other to adjust the distance between their eyes, wherein this distance is based on... Figure 2aFor example, the distance between the first optical axis O1 and the second optical axis O2 is the first spacing. Because the relative rotation of the first lens barrel 20 and the second lens barrel 30 causes the first coordinate system (X-axis and Y-axis) of the first anti-shake mechanism 11 to be non-coincident (i.e., not parallel) with the second coordinate system (X'-axis and Y'-axis) of the second anti-shake mechanism 12, this means the spacing between the first and second optical axes is greater than or less than the first spacing. This causes a difference between the first direction D1 for compensation by the first anti-shake mechanism 11 and the second direction D2 for compensation by the second anti-shake mechanism 12. Therefore, the anti-shake module 10' in this embodiment... By setting the adjustment member 40, after the user rotates the first lens barrel 20 and the second lens barrel 30 relative to each other, the user can rotate the adjustment member 40 again to move the second anti-shake mechanism 12 in a circumferential direction until the first coordinate system (X-axis and Y-axis) of the first anti-shake mechanism 11 coincides with (i.e., parallel to) the second coordinate system (X'-axis and Y'-axis) of the second anti-shake mechanism 12. In this way, the first direction D1 for compensation by the first anti-shake mechanism 11 and the second direction D2 for compensation by the second anti-shake mechanism 12 can be corrected to be parallel to each other. When the jitter of the dual-lens optical device 1' in this embodiment exceeds the maximum compensation range, the first direction D1 for compensation by the first anti-shake mechanism 11 and the second direction D2 for compensation by the second anti-shake mechanism 12 are the same, and the first image formed by the first lens group and the second image formed by the second lens group become parallax-free.

[0039] Although the movable adjustment member 40 in this embodiment is connected to the second anti-shake mechanism 12, the present invention is not limited thereto. In other embodiments, the movable adjustment member 40 may also be connected to the first anti-shake mechanism 11.

[0040] Please see Figure 5 This represents a third embodiment of the dual-lens optical device and its anti-shake module of the invention. This embodiment has some of the same structure as the second embodiment, and the same components are given the same reference numerals and their descriptions are omitted. The difference between this embodiment and the second embodiment is that the plurality of second sensors 112 in this embodiment do not include angular velocity sensors, that is, the anti-shake module 10” in this embodiment only has a first angular velocity sensor 111a. The first angular velocity sensor 111a detects the angular velocity of the overall dual-lens optical device 1” shaking. In this embodiment, the moving adjustment member 40 also rotates the second anti-shake mechanism 12 in the circumferential direction so that the second direction D2 for compensation of the second anti-shake mechanism 12 is the same as the first direction D1 for compensation of the first anti-shake mechanism 11, and the first image formed by the first lens group and the second image formed by the second lens group become a state without parallax.

[0041] Although the anti-shake module 10” in this embodiment only has a first angular velocity sensor 111a and the moving adjustment member 40 is connected to the second anti-shake mechanism 12, the present invention is not limited thereto. In other embodiments, the anti-shake module may also only have a second angular velocity sensor and the moving adjustment member may also be connected to the first anti-shake mechanism.

[0042] The dual-lens optical device and its anti-shake module of the present invention stop driving the first and second lenses to compensate when the shaking of the dual-lens optical device exceeds the maximum compensation range of the first threshold for the positional change of the first lens detected by the first anti-shake mechanism or the second threshold for the positional change of the second lens detected by the second anti-shake mechanism. Moreover, the optical axis of the first lens is made to coincide with the first optical axis of the first lens group, and the optical axis of the second lens is made to coincide with the second optical axis of the second lens group, thereby avoiding parallax between the first image formed by the first lens group and the second image formed by the second lens group of the dual-lens optical device.

[0043] The dual-lens optical device and its anti-shake module of the present invention, by setting an adjustment and moving member, moves the first anti-shake mechanism or the second anti-shake mechanism until the first compensation direction is parallel to the third compensation direction. The first anti-shake mechanism and the second anti-shake mechanism respectively drive the first lens and the second lens to compensate in the same direction, and also avoid parallax between the first image formed by the first lens group and the second image formed by the second lens group of the dual-lens optical device.

[0044] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. Any simple equivalent variations and modifications made in accordance with the claims and description of the invention are still within the scope of this patent. Furthermore, no embodiment or claim of the present invention needs to achieve all the objectives, advantages, or features disclosed in the invention. In addition, the abstract and headings are merely for assisting in patent document searches and are not intended to limit the scope of the invention.

Claims

1. A dual-lens anti-shake module, characterized in that, include: A first anti-shake mechanism includes a plurality of first sensors and a first compensation component. The first compensation component drives a first lens to compensate along a first direction. The first sensors are arranged in a direction parallel to a first optical axis. One of the first sensors detects a first positional change of the first lens in the first direction. The second anti-shake mechanism includes a second sensor and a second compensation component. The second compensation component drives the second lens to compensate along the second direction. The second sensor detects that the second lens has a second positional change in the second direction. When the first position change or the second position change is greater than the first threshold, the first compensation component stops driving the first lens to perform compensation and the second compensation component stops driving the second lens to perform compensation. When the first position change or the second position change is less than the second threshold, the first compensation component starts driving the first lens to perform compensation and the second compensation component starts driving the second lens to perform compensation. The first threshold is greater than the second threshold.

2. The dual-lens anti-shake module as described in claim 1, characterized in that, The first compensation component drives the first compensation component to perform compensation with a first maximum position compensation amount, and the second compensation component drives the second compensation component to perform compensation with a second maximum position compensation amount. The first threshold is greater than the first maximum position compensation amount and greater than the second maximum position compensation amount, and the second threshold is less than the first maximum position compensation amount and less than the second maximum position compensation amount.

3. The dual-lens anti-shake module as described in claim 1, characterized in that, The first threshold and the second threshold are adjustable.

4. A dual-lens anti-shake module, characterized in that, include: A first anti-shake mechanism is disposed in a first lens barrel and has a first optical axis. It includes a plurality of first sensors and a first compensation component. The first compensation component drives the first lens to perform compensation along a first direction that is a combination of a first compensation direction and a second compensation direction. The first sensors are arranged in a direction parallel to the first optical axis, wherein the first compensation direction is orthogonal to the second compensation direction. The second anti-shake mechanism is disposed in the second lens barrel and has a second optical axis. It includes a second sensor and a second compensation component. The second compensation component drives the second lens to compensate along the second direction which is the resultant of the third compensation direction and the fourth compensation direction. The third compensation direction is orthogonal to the fourth compensation direction. as well as A movable adjustment component is connected to the first anti-shake mechanism or the second anti-shake mechanism; The first optical axis and the second optical axis are separated by a first gap. When the distance between the first optical axis and the second optical axis is greater than or less than the first gap, the moving adjustment member moves so that the first anti-shake mechanism or the second anti-shake mechanism moves until the first compensation direction is parallel to the third compensation direction.

5. The dual-lens anti-shake module as described in claim 4, characterized in that, The movable adjustment component is connected to the second anti-shake mechanism, and the first sensors include a first angular velocity sensor, and the second sensors include a second angular velocity sensor or do not include an angular velocity sensor. One of the first sensors detects a first positional change of the first lens in the first direction, and the second sensor detects a second positional change of the second lens in the second direction. When the first positional change or the second positional change is greater than a first threshold, the first compensation component stops driving the first lens to compensate, and the second compensation component stops driving the second lens to compensate. When the first positional change or the second positional change is less than a second threshold, the first compensation component starts driving the first lens to compensate, and the second compensation component starts driving the second lens to compensate. The first threshold is greater than the second threshold.

6. The dual-lens anti-shake module as described in claim 1 or 4, characterized in that, The first sensors include a first angle sensor and a first position sensor, which are disposed on different components arranged along the first optical axis; the second sensors include a second angle sensor and a second position sensor, which are disposed on different components arranged along the second optical axis.

7. A dual-lens optical device, characterized in that, include: The anti-shake module as described in claim 1, 2, 3, 4 or 5; The first lens barrel, wherein the first anti-shake mechanism is disposed in the first lens barrel; A first lens group is disposed in the first lens barrel and has the first optical axis. Light passes through the first lens group to form a first image. The first lens group includes the first lens. The second lens barrel, wherein the second anti-shake mechanism is disposed on the second lens barrel; A second lens group is disposed in the second lens barrel and has the second optical axis. Light passes through the second lens group to form a second image. The second lens group includes the second lens. The first lens barrel and the second lens barrel are movable relative to each other to change the distance between the first optical axis and the second optical axis, and the movable adjustment member is disposed on the first lens barrel or the second lens barrel.

8. A dual-lens optical device, characterized in that, include: The anti-shake module as described in claim 1, 2, 3 or 5; The first lens barrel, wherein the first anti-shake mechanism is disposed in the first lens barrel; A first lens group is disposed in the first lens barrel and has the first optical axis. Light passes through the first lens group to form a first image. The first lens group includes the first lens. The second lens barrel, wherein the second anti-shake mechanism is disposed on the second lens barrel; A second lens group is disposed in the second lens barrel and has the second optical axis. Light passes through the second lens group to form a second image. The second lens group includes the second lens. as well as A control module is electrically connected to the first anti-shake mechanism and the second anti-shake mechanism. The control module compares the first position change and the second position change with the first threshold and the second threshold to control the first anti-shake mechanism and the second anti-shake mechanism. The first lens barrel and the second lens barrel are movable relative to each other to change the distance between the first optical axis and the second optical axis.

9. A dual-lens optical device, characterized in that, include: The anti-shake module as described in claim 4 or 5; The first lens barrel, wherein the first anti-shake mechanism is disposed in the first lens barrel; A first lens group is disposed in the first lens barrel and has the first optical axis. Light passes through the first lens group to form a first image. The first lens group includes the first lens. The second lens barrel, wherein the second anti-shake mechanism is disposed on the second lens barrel; A second lens group is disposed in the second lens barrel and has the second optical axis. Light passes through the second lens group to form a second image. The second lens group includes the second lens. The first lens barrel and the second lens barrel are movable relative to each other to change the distance between the first optical axis and the second optical axis, and the moving adjustment member is disposed on the first lens barrel or the second lens barrel; The movable adjustment component includes a support cylinder and an operating ring. The support cylinder is connected to the first lens barrel or the second lens barrel. The operating ring is connected to the support cylinder and is rotatably disposed on the outer peripheral surface of the first lens barrel or the second lens barrel. The operation ring rotates in conjunction with the support cylinder to rotate the first lens barrel or the second lens barrel, thereby moving the first anti-shake mechanism or the second anti-shake mechanism.

10. The dual-lens optical device as described in claim 9, characterized in that, It also includes a driving component that drives the bearing cylinder to rotate.

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