CN213365151U - Optical system - Google Patents
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- CN213365151U CN213365151U CN202022235140.0U CN202022235140U CN213365151U CN 213365151 U CN213365151 U CN 213365151U CN 202022235140 U CN202022235140 U CN 202022235140U CN 213365151 U CN213365151 U CN 213365151U
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Abstract
An optical system comprising a first optical module for driving an optical element to move, the first optical module comprising: a first movable part for connecting the first optical element; the first movable part can move relative to the first fixed part; and a first driving component for driving the first movable part to move relative to the first fixed part. The first optical module further comprises a guiding component for guiding the first movable part to move in a first dimension.
Description
Technical Field
The present invention relates to an optical system, and more particularly to an optical system having a guide assembly.
Background
With the development of science and technology, people pursue high-efficiency and high-specification visual enjoyment of electronic products more and more, so as to enrich the use experience of more excellent products. Many electronic devices (e.g., tablet computers or smart phones) are equipped with a lens module to take pictures or record videos. When a user uses an electronic device equipped with a lens module, the electronic device may shake, and an image captured by the lens module may be blurred. However, the requirement for image quality is increasing, so the anti-vibration function of the lens module is becoming more important, and the miniaturization and lightness of the product are also required for the user to use. How to provide a high quality camera module is an important issue.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides an optical system, include: a first optical module for driving an optical component to move, the first optical module comprising: a first movable part for connecting the first optical element; the first movable part can move relative to the first fixed part; the first driving component is used for driving the first movable part to move relative to the first fixed part; the first optical module further comprises a guiding component for guiding the first movable part to move in a first dimension.
In an embodiment, when viewed along a first optical axis of the first optical element, the first fixing portion has a polygonal structure and includes a first side extending along a first direction and a second side extending along a second direction; the first and second directions are different from each other; the first direction and the second direction are both vertical to the first optical axis; the first side edge and the second side edge have different lengths; the length of the first side edge is greater than that of the second side edge; when the first driving assembly is observed along the first optical axis direction, the first driving assembly is positioned at the second side edge; when viewed along the first optical axis direction, the guide assembly is positioned at the second side edge; when viewed along the first optical axis, a first position sensing element of the first optical module is located at the second side.
In one embodiment, the first position sensing assembly is used for sensing the movement of the first movable portion relative to the first fixed portion; the first optical module further includes: a second movable part for connecting a second optical element; the second driving component is used for driving the second movable part to move relative to the first fixed part; the second position sensing assembly is used for sensing the movement of the second movable part relative to the first fixed part; when the optical axis is observed along the first optical axis direction, the second position sensing assembly is positioned at the second side edge; when observed along the first optical axis direction, the first position sensing assembly and the second position sensing assembly are at least partially overlapped; the guide component is used for guiding the second movable part to move in the first dimension; the first optical module also comprises a first pressure applying component which is used for generating a first pre-pressure to the first movable part; the first movable part is stably and movably connected with the guide assembly through a first pre-pressure; the first pressure applicator assembly further comprises: a first magnetic element with a strip-shaped structure; the second magnetic element corresponds to the first magnetic element to generate a first pre-pressure; at least one of the first and second magnetic elements has a permanent magnet; the first magnetic element and the second magnetic element are respectively arranged on the first movable part and the first fixed part; the first position sensing assembly senses the movement of the first movable part relative to the first fixed part by sensing the first magnetic element or the second magnetic element; when viewed along the central arrangement direction of the first magnetic element and the second magnetic element, the first position sensing assembly is at least partially overlapped with the first magnetic element or the second magnetic element; the first pre-pressure direction extends from the first movable part to the second side edge; a first imaginary line of extension of the first preload force does not pass through the guide member.
In an embodiment, the first optical module further includes a second pressing element for generating a second pre-pressure on the second movable portion; the second movable part is stably and movably connected with the guide assembly through a second pre-pressure; the second pressure applicator assembly further comprises: a third magnetic element with a strip-shaped structure; the fourth magnetic element corresponds to the third magnetic element to generate second pre-pressure; at least one of the third magnetic element and the fourth magnetic element is provided with a permanent magnet; the third magnetic element and the fourth magnetic element are respectively arranged on the second movable part and the first fixed part; the second position sensing assembly senses the movement of the second movable part relative to the first fixed part by sensing the third magnetic element or the fourth magnetic element; when viewed along the central arrangement direction of the third and fourth magnetic elements, the second position sensing assembly is at least partially overlapped with the third magnetic element or the fourth magnetic element; the second pre-pressure direction extends from the second movable part to the second side edge; a second imaginary line of extension of the second preload force does not pass through the guide assembly.
In an embodiment, the first optical module is configured to receive a light beam, and the light beam also passes through a second optical module, and the second optical module further includes a third optical element configured to change a traveling direction of an optical axis of the light beam.
In an embodiment, the first driving assembly further includes: a first piezoelectric element having piezoelectric material; a first contact element corresponding to the first piezoelectric element; the first piezoelectric element and the first contact element are respectively and fixedly arranged on the first movable part and the first fixed part; the first piezoelectric element at least partially overlaps the first contact element when viewed in a direction perpendicular to the first optical axis; the motion in the first dimension is motion along a first optical axis.
In an embodiment, the second driving assembly further includes: a second piezoelectric element having piezoelectric material; the second contact element corresponds to the first piezoelectric element; the second piezoelectric element and the second contact element are respectively and fixedly arranged on the second movable part and the first fixed part; the second piezoelectric element at least partially overlaps the second contact element when viewed in a direction perpendicular to the first optical axis; the first and second piezoelectric elements are at least partially overlapped when viewed along the first optical axis direction. The first and second contact elements at least partially overlap when viewed in the direction of the first optical axis; the first and second contact members do not overlap when viewed along the second direction.
In an embodiment, the optical system further includes a third optical module connected to a fourth optical element having a second optical axis, the light passes through the fourth optical element, and the first and second optical axes are not parallel; the second optical module further includes: a third movable part for connecting the third optical element; the third movable part can move relative to the second fixed part; the third driving component is used for driving the third movable part to move relative to the second fixed part; the third driving assembly is used for driving the third movable part to move on a second dimension relative to the second fixed part, and the second dimension is different from the first dimension; the movement in the second dimension is a rotation about an axis extending in a third direction; the third optical module further includes: a fourth movable part for connecting the fourth optical element; the fourth movable part can move relative to the third fixed part; the fourth driving component is used for driving the fourth movable part to move relative to the third fixed part; the fourth driving component is used for driving the fourth movable part to move on a third dimension relative to the third fixed part, and the third dimension is different from the first dimension; the third dimension is different from the second dimension.
In one embodiment, the second optical module is located between the first and third optical modules.
In one embodiment, the fourth optical element includes a plurality of optical lenses; the first optical element comprises at least one optical lens, and the number of the optical lenses of the fourth optical element is larger than that of the optical lenses of the first optical element.
The utility model provides an optical system, include:
a first optical module for driving an optical element to move, the first optical module comprising:
a first movable part for connecting a first optical element;
a first fixed part, wherein the first movable part can move relative to the first fixed part;
the first driving component is used for driving the first movable part to move relative to the first fixed part; and
a guiding component for guiding the first movable part to move in a first dimension.
Preferably, when viewed along a first optical axis of the first optical element, the first fixing portion has a polygonal structure and includes a first side extending along a first direction and a second side extending along a second direction;
the first direction and the second direction are different from each other;
the first direction and the second direction are both vertical to the first optical axis;
the first side edge and the second side edge have different lengths;
the length of the first side edge is greater than that of the second side edge;
when the first driving assembly is observed along the first optical axis direction, the first driving assembly is positioned at the second side edge;
when viewed along the first optical axis, the guide assembly is located at the second side edge;
when viewed along the first optical axis, a first position sensing element of the first optical module is located at the second side.
Preferably, the first position sensing assembly is used for sensing the movement of the first movable part relative to the first fixed part;
the first optical module further includes:
a second movable part for connecting a second optical element;
the second driving component is used for driving the second movable part to move relative to the first fixed part;
a second position sensing component for sensing the movement of the second movable part relative to the first fixed part;
when the second position sensing assembly is observed along the first optical axis direction, the second position sensing assembly is positioned at the second side edge;
when viewed along the first optical axis direction, the first position sensing component and the second position sensing component are at least partially overlapped;
the guiding component is used for guiding the second movable part to move in the first dimension;
the first optical module also comprises a first pressure applying component for generating a first pre-pressure to the first movable part;
the first movable part is stably and movably connected with the guide assembly through the first pre-pressure;
the first pressure applicator assembly further comprises:
a first magnetic element with a strip-shaped structure;
a second magnetic element corresponding to the first magnetic element for generating the first pre-pressure;
at least one of the first and second magnetic elements has a permanent magnet;
the first magnetic element and the second magnetic element are respectively arranged on the first movable part and the first fixed part;
the first position sensing assembly senses the movement of the first movable part relative to the first fixed part by sensing the first magnetic element or the second magnetic element;
when viewed along the central arrangement direction of the first and second magnetic elements, the first position sensing assembly is at least partially overlapped with the first magnetic element or the second magnetic element;
the first pre-pressure direction extends from the first movable part to the second side edge;
a first imaginary line of extension of the first preload force does not pass through the guide member.
Preferably, the first optical module further comprises a second pressing component for generating a second pre-pressure on the second movable portion;
the second movable part is stably and movably connected with the guide assembly through the second pre-pressure;
the second pressure applicator assembly further comprises:
a third magnetic element with a strip-shaped structure;
the fourth magnetic element corresponds to the third magnetic element to generate the second pre-pressure;
at least one of the third and fourth magnetic elements has a permanent magnet;
the third magnetic element and the fourth magnetic element are respectively arranged on the second movable part and the first fixed part;
the second position sensing assembly senses the movement of the second movable part relative to the first fixed part by sensing the third magnetic element or the fourth magnetic element;
when viewed along the central arrangement direction of the third and fourth magnetic elements, the second position sensing assembly is at least partially overlapped with the third magnetic element or the fourth magnetic element;
the second pre-pressure direction extends from the second movable part to the second side edge;
a second imaginary line of extension of the second preload force does not pass through the guide member.
Preferably, the first optical module is configured to receive a light beam, and the light beam also passes through a second optical module, and the second optical module further includes a third optical element configured to change a traveling direction of an optical axis of the light beam.
Preferably, the first drive assembly further comprises:
a first piezoelectric element having piezoelectric material;
a first contact element corresponding to the first piezoelectric element;
the first piezoelectric element and the first contact element are respectively and fixedly arranged on the first movable part and the first fixed part;
the first piezoelectric element and the first contact element at least partially overlap when viewed in a direction perpendicular to the first optical axis;
the motion in the first dimension is motion along the first optical axis.
Preferably, the second drive assembly further comprises:
a second piezoelectric element having piezoelectric material;
a second contact element corresponding to the first piezoelectric element;
the second piezoelectric element and the second contact element are respectively and fixedly arranged on the second movable part and the first fixed part;
the second piezoelectric element at least partially overlaps the second contact element when viewed along a direction perpendicular to the first optical axis;
when viewed along the first optical axis direction, the first and second piezoelectric elements are at least partially overlapped;
the first and second contact elements at least partially overlap when viewed along the direction of the first optical axis;
the first and second contact elements do not overlap when viewed along the second direction.
Preferably, the optical module further comprises a third optical module for connecting a fourth optical element having a second optical axis, the light passes through the fourth optical element, and the first and second optical axes are not parallel;
the second optical module further includes:
a third movable part for connecting the third optical element;
the third movable part can move relative to the second fixed part;
the third driving component is used for driving the third movable part to move relative to the second fixed part;
the third driving assembly is used for driving the third movable part to move on a second dimension relative to the second fixed part, and the second dimension is different from the first dimension;
the motion in the second dimension is rotation about an axis extending in a third direction;
the third optical module further includes:
a fourth movable portion for connecting the fourth optical element;
a third fixed part, the fourth movable part can move relative to the third fixed part;
the fourth driving component is used for driving the fourth movable part to move relative to the third fixed part;
the fourth driving component is used for driving the fourth movable part to move on a third dimension relative to the third fixed part, and the third dimension is different from the first dimension;
the third dimension is different from the second dimension.
Preferably, the second optical module is located between the first and third optical modules.
Preferably, the fourth optical element comprises a plurality of optical lenses;
the first optical element comprises at least one optical lens, and the number of the optical lenses of the fourth optical element is larger than that of the optical lenses of the first optical element.
Drawings
Fig. 1 is a schematic diagram showing an optical system according to an embodiment of the present invention.
Fig. 2A is a schematic diagram showing an optical system.
Fig. 2B is a schematic diagram showing an optical system.
Fig. 3 is an exploded schematic view (with the housing omitted) showing the optical system.
Fig. 4 is a schematic sectional view showing a line 12-a-12-a' in fig. 2A.
Fig. 5 is a plan perspective view showing a part of the optical system.
Fig. 6 is a schematic view showing an optical system of another embodiment.
Fig. 7 is a schematic view showing an optical system of another embodiment.
Description of reference numerals:
12-1, 12-1', 12-2: optical system
12-100: first optical module
12-200: second optical module
12-300: third optical film group
12-10: fixing part
12-10S 1: the first side edge
12-10S 2: second side edge
12-11: outer casing
12-12; side plate
12-13: sleeve barrel
12-30: a first movable part
12-40: second movable part
12-50: the third movable part
12-301: third fixed part
12-302: the fourth movable part
12-A-12-A': line segment
12-D1, 12-D2, 12-D3: direction of rotation
12-F1, 12-F1', 12-F2: pre-pressure
12-FL1, 12-FL 1', 12-FL 2: extended virtual line
12-LS 1: first optical element
12-LS 2: second optical element
12-LS 3: third optical element
12-LS 4: fourth optical element
12-LT: incident light
12-GU: guide assembly
12-J1, 12J 2: piezoelectric element
12-K1, 12-K2: contact element
12-MC1, 12-MC2, 12-MC3, 12-MC 4: drive assembly
12-M1, 12-M1 ', 12-M2', 12-M2, 12-M3, 12-M4: magnetic element
12-O1, 12-O2: optical axis
12-PF: circuit board
12-SN1, 12-SN 2: position sensing assembly
12-SN11, 12-SN12, 12-SN21, 12-SN 22: sensing element
12-T1, 12-T1', 12-T2: pressure applying assembly
12-X1: position of
Detailed Description
Further areas of applicability of the present invention will become apparent from the detailed description provided hereinafter. It should be understood that the following detailed description and specific examples, while indicating exemplary embodiments of the optical system, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For convenience of explanation, in the following description and accompanying drawings, a first direction 12-D1 (X-axis), a second direction 12-D2 (Y-axis), and a third direction 12-D3 (Z-axis) may be used to describe directions or orientations. The first direction 12-D1, the second direction 12-D2, and the third direction 12-D3 are each different and are not parallel to each other. In some embodiments, the first direction 12-D1, the second direction 12-D2, and the third direction 12-D3 are perpendicular or substantially perpendicular to each other.
FIG. 1 is a schematic diagram of an optical system 12-1 according to an embodiment of the present disclosure. The optical system 12-1 may be installed in a tablet computer, a smart phone, or the like. The optical system 12-1 may be a periscopic optical system. The detailed structure of the aforementioned optical system 12-1 will be described below.
The optical system 12-1 includes a first optical module 12-100 and a second optical module 12-200. The first optical module 12-100 is used to carry an optical component, such as one or more optical elements (e.g., the first and second optical elements 12-LS1, 12-LS2 in FIG. 2A). The second optical module 200 carries a third optical element 12-L3, which can be an optical path adjusting unit for changing the optical path of the incident light 12-LT. Specifically, when the incident light (line) 12-LT from the outside is transmitted to the third optical element 12-L3 along the main axis 12-Q, the third optical element 12-L3 is used to adjust the incident direction and the emitting direction of the incident light 12-LT, thereby changing the optical path of the light 12-LT and enabling the incident light 12-LT to reach the optical elements 12-LS1 and 2LS 2. The optical elements 12-LS1, 12-LS2 are, for example, lens elements or lens assemblies comprising a plurality of lens elements. The first optical axis 12-O1 is a virtual axis passing through the center of the optical elements 12-LS1, 12-LS 2. The aforementioned third optical element 12-L3 may be a mirror (mirror), a refractive prism (prism), a beam splitter (beam splitter), or the like. When the incident light 12-LT enters the second optical module 200, the incident light 12-LT is substantially perpendicular to the first optical axis 12-O1, and is reflected or refracted by the third optical element 12-L3, such that the incident light 12-LT passes through the optical elements 12-LS1 and 12-LS2 and reaches a photosensitive element to obtain an image. Among them, the Optical elements provided inside can be moved by a driving mechanism inside the Optical system 12-100, thereby achieving Optical Zooming (zoom), Auto-Focusing (AF), or Optical Image Stabilization (OIS).
Referring to fig. 2A and 2B, schematic diagrams illustrating different modes of the optical system 12-1 are shown. The optical system 12-1 can drive the optical elements 12-LS1, 12-LS2 disposed therein by a driving mechanism, thereby achieving optical zooming, auto-focusing or optical anti-shake. For example, in FIG. 2A, the distance between the two optical elements 12-LS1, 12-LS2 is large, and the optical system 12-1 exhibits a telescopic mode; in FIG. 2B, the two optical elements 12-LS1 and 12-LS2 are shifted to the right (+ Z-axis direction) along the first optical axis 12-O1 with respect to FIG. 2, and the distance between the two optical elements is small, so that the optical system 12-1 exhibits a wide-angle mode.
Referring to FIG. 3, the first optical module 12-100 is used to drive the optical elements, such as the first and second optical elements 12-LS1 and 12-LS 2. The first optical module 12-100 includes: a first fixed part 12-10, a first movable part 12-30 (which may include a lens barrel and a lens base), a second movable part 12-40 (which may include a lens barrel and a lens base), a first driving component 12-MC1, a second driving component 12-MC2 and a guiding component 12-GU. The first movable portion 12-30 is connected to the first optical element 12-LT1, and the first driving assembly 12-MC1 is used for driving the first movable portion 12-30 to move relative to the first fixed portion 12-10. The second movable portion 12-40 is connected to the first optical element 12-LS2, and the second driving assembly 12-MC2 is used for driving the second movable portion 12-40 to move relative to the first fixed portion 12-10. The guide assembly 12-GU may then be used to guide the first and second movable portions 12-30, 12-40 in a first dimension. In some embodiments, the motion in the first dimension is motion along the first optical axis 12-O1.
The first fixing portion 12-10 includes a housing 12-11, a side plate 12-12 and a sleeve 12-13, the side plate 12-12 and the sleeve 12-13 are disposed in the housing 12-11, and the side plate 12-12 includes a circuit board assembly 12-PF. The housing 12-11 has a receiving space in which the first movable section 12-30, the first driving assembly 12-MC1, the guide assembly 12-GU, the second movable section 12-40 and the second driving assembly 12-MC2 are disposed for protection. The first stationary portion 12-10 has a polygonal configuration when viewed along a first optical axis 12-O1 of the first optical element 12-LS 1.
Referring to FIGS. 1, 2A and 3, first retainer portions 12-10 include a first side 12-10S1 extending along a first direction 12-D1 and a second side 12-10S2 extending along a second direction 12-D2. In some embodiments, the first direction 12-D1 and the second direction 12-D2 are both perpendicular to the first optical axis 12-O1. The first and second sides 12-10S1, 12-10S2 have different lengths. In the present embodiment, the length of the first side 12-10S1 is greater than the length of the second side 12-10S 2. Referring to FIG. 2A, the first driving element 12-MC1 is located at the second side 12-10S2 when viewed along the first optical axis 12-O1. When viewed along the first optical axis 12-O1, the guiding element 12-GU is located at the second side 12-10S2, and the first and second position sensing elements 12-SN1, 12-SN2 of the first optical module 12-100 are also located at the second side 12-10S 2.
Referring to fig. 3 and 4, the guide member 12-GU is a long rod extending along the first optical axis 12-O1 and passing through the first and second movable portions 12-30, 12-40 such that the first and second movable portions 12-30, 12-40 can move or slide thereon. In some embodiments, one end of the guiding element 12-GU may be fixed to the second optical module 2-200.
Referring to fig. 4 and 5, the first driving element 12-MC1 for driving the first movable portion 12-30 includes a first piezoelectric element 12-J1 and a first contact element 12-K1, which correspond to each other. The first piezoelectric element 12-J1 has a piezoelectric material (piezoelectric material). In some embodiments, the first piezoelectric element 12-J1 has a silicon carbide material. The first piezoelectric elements 12-K1 and the first contact elements 12-K1 are fixedly disposed on the first movable portions 12-30 and the first fixed portions 12-10, respectively. The first piezoelectric element 12-J1 at least partially overlaps the first contact element 12-K1 when viewed in a direction perpendicular to the first optical axis 12-O1.
Similarly, the second driving assembly 12-MC2 is used to drive the second movable portion 12-40, and includes a second piezoelectric element 12-J2 and a second contact element 12-K2, which are corresponding to each other. The second piezoelectric element 12-J2 has a piezoelectric material. The second piezoelectric elements 12-J2 and the second contact elements 12-K2 are fixedly disposed on the second movable portions 12-40 and the first fixed portions 12-10, respectively. The second piezoelectric element 12-J2 at least partially overlaps the second contact element 12-K2 when viewed along a direction perpendicular to the first optical axis 12-O. The first and second piezoelectric elements 12-J1, 12-J2 at least partially overlap when viewed along the first optical axis 12-O1. The first and second contact elements 12-K1, 12-K2 at least partially overlap when viewed in the direction of the first optical axis 12-O1. The first and second contact elements 12-K1, 12-K2 do not overlap when viewed along the second direction 12-D2.
Therefore, the first and second movable portions 12-30, 12-40 can be moved relative to the first fixed portion 12-10 by the first and second driving assemblies 12-MC1, 12-MC2 and the guiding assembly 12-GU, thereby achieving the effects of optical focusing, zooming and anti-shake.
The first position sensing device 12-SN1 is used for sensing the movement of the first movable portion 12-30 relative to the first fixed portion 12-10; the first optical module 12-100 further comprises: the second movable portions 12-40, the second driving device 12-MC2 and the second position sensing device 12-SN2, the second movable portions 12-40 are used to connect the second optical device 12-LS 2. The second driving assembly 12-MC2 for driving the second movable portion 12-MC2 to move relative to the first fixed portion 12-10; the second position sensing device 12-SN2 is used to sense the movement of the second movable portion 12-40 relative to the first fixed portion 12-10.
The first and second position sensing devices 12-SN1, 12-SN2 each have a pair of corresponding sensing elements: a pair of sense elements 12-SN11 and 12-SN12 correspond to each other, and a pair of sense elements 12-SN21 and 12-SN22 correspond to each other. The sensing elements 12-SN11, 12-SN21 are disposed on the side panels 12-12, and the sensing elements 12-SN12, 12-SN22 are disposed on the first and second movable portions 12-30, 12-40, respectively. In some embodiments, the sensing element 12-SN11 (or 12-SN21) can be one of a permanent magnet and a Hall Effect Sensor (Hall Effect Sensor), and the sensing element 12-SN12 (or 12-SN22) can be the other of the permanent magnet and the Hall Effect Sensor, and the Hall Effect Sensor can determine the position of the permanent magnet by detecting the change of the magnetic field of the permanent magnet, thereby sensing the movement of the first and second movable portions 12-30, 12-40 relative to the first fixed portion 12-10. The second position sensing element 12-SN2 is located on the second side 12-10S2 when viewed along the first optical axis 12-O1, and the first and second position sensing elements 12-SN1, 12-SN2 at least partially overlap.
The first optical module 12-100 further includes a first pressing member 12-T1 for generating a first pre-pressure 12-F1 to the first movable portion 12-30, so that the first movable portion 12-30 is stably and movably connected to the guiding member 12-GU via the first pre-pressure 12-F1.
The first pressing assembly 12-T1 includes a first magnetic element 12-M1 and a second magnetic element 12-M2 respectively disposed on the first movable portion 12-30 and the first fixed portion 12-10, and the first magnetic element and the first fixed portion correspond to each other to generate a first pre-pressure 12-F1. This centers the guide assembly 12-GU and pushes against and stabilizes the first movable portion 12-30. The direction of the first pre-stress 12-F1 extends from the first movable portion 12-30 towards the second side edge 12-10S2, and a first imaginary line of extension 12-FL1 of the first pre-stress 12-F1 does not pass through the guide assembly 12-GU. In the embodiment, the first magnetic element 12-M1 has a strip structure, which may be a magnetic conductive element of a strip rod, and has a magnetic conductive material (Permeability material), and the second magnetic element 12-M2 is a permanent magnet. In other embodiments, the first magnetic element 12-M1 may be a permanent magnet and the second magnetic element 12-M2 may be a magnetic conductive element.
In some embodiments, the first position sensing assembly 12-SN1 can sense the relative movement of the first movable portion 12-30 with respect to the first fixed portion 12-10 by sensing the relative position of the first magnetic element 12-M1 or the second magnetic element 12-M2. In some embodiments, the first position sensing element 12-SN1 may be repositioned and one of the sensing elements 12-SN11 and 12-SN12 (the other of which may be omitted) of the first position sensing element 12-SN1 is placed at position 12-X1 (as shown in FIG. 4) to sense the activity of the first movable portion 2-30 via the position sensing element 12-SN1 and the first and second magnetic elements 12-M1, 12-M2. This arrangement allows the first position sensing assembly 12-SN1 to at least partially overlap the first magnetic element 12-M1 or the second magnetic element 12-M2 in the direction of the central arrangement of the first and second magnetic elements 12-M1, 12-M2, thereby reducing component space and space savings.
With continued reference to fig. 3, 4 and 5, the first optical module 12-10 further includes a second pressure applicator assembly 12-T2. Similarly, the second pressing assembly 12-T2 is used to generate a second pre-pressure 12-F2 on the second movable portion 12-40. the second movable portion 12-40 is stably and movably connected to the guide assembly 12-GU via the second pre-pressure 12-F2. It should be noted that for the sake of simplicity and clarity, the second preliminary pressure 12-F2 is also indicated in fig. 4, and in practice, the second preliminary pressure 12-F2 is applied to the second movable section 12-40 behind the first movable section 12-30, as can be understood by referring to fig. 2A, 4 and 5.
The second pre-stress 12-F2 is directed from the second movable portion 12-40 toward the second side edge 12-10S2, and a second imaginary line of extension 12-FL2 of the second pre-stress 2-F2 does not pass through the guide assembly 12-GU. The second pressing assembly 12-T2 includes a third magnetic element 12-M3 and a fourth magnetic element 12-M4. The third magnetic element 12-M3 has an elongated configuration. The fourth magnetic element 12-M4 corresponds to the third magnetic element 12-M3 to generate the second pre-stress 12-F2. At least one of the third and fourth magnetic elements 12-M3, 12-M4 has a permanent magnet. The third and fourth magnetic elements 12-M3 and 12-M4 are respectively disposed on the second movable portion 12-40 and the first fixed portion 12-10.
The first and third magnetic elements 12-M1, 12-M3 have a strip structure and also have the function of guiding the first and second movable portions 12-30, 12-40 to move. in some embodiments, the first and third magnetic elements 12-M1, 12-M3 may be an integrally formed strip. In some embodiments, the first and third magnetic elements 12-M1, 12-M3 may be separate bars.
In some embodiments, the second position sensing assembly 12-SN2 can sense the movement of the second movable portion 12-40 relative to the first stationary portion 12-10 by sensing the third magnetic element 12-M3 or the fourth magnetic element 12-M4. In some embodiments, the second position sensing element 12-SN2 can change position as described above for the first position sensing element 12-SN1, and is positioned along the center of the third and fourth magnetic elements 12-M3, 12-M4.
FIG. 6 is a cross-sectional view (with the housing omitted) of an optical system 12-1' according to another embodiment of the present disclosure. In comparison with the optical system 12-1 of FIG. 4, the pressing member 12-T1 'of the optical system 12-1' is different from the pressing member 12-T1 of the optical system 12-1. In the present embodiment, the pressing assembly 12-T1 ' includes a first magnetic element 12-M1 ' and a second magnetic element 12-M2 ' respectively disposed on the circuit board assembly 2-PF of the first movable portion 2-30 and the first fixed portion 2-10. Similar to the aforementioned pressing assembly 12-T1, the first pre-stress 12-F1 ' is generated by the first magnetic element 12-M1 ', 12-M2 ' and is applied to the first movable portion 12-30, so that the first movable portion 12-30 can be stably moved on the guide assembly 12-GU. The aforementioned second pressure applying assembly 12-T2 may be replaced with a configuration similar to the first pressure applying assembly 12-T1' to stabilize the second movable portion 12-40.
Referring to fig. 1, in some embodiments, the second optical module 12-200 includes a third movable portion 12-50, a second fixed portion 20, and a third driving component 12-MC 3. The third movable portion 12-50 is used to connect the third optical element 12-LS 3. The third driving assembly is used for driving the third movable portion 12-50 to move relative to the second fixed portion 12-20. In some embodiments, the third driving assembly 12-MC3, which may be an electromagnetic driving assembly including coils and magnetic elements, is configured to drive the third movable portion 12-50 to move relative to the second fixed portion 12-20 in a second dimension different from the first dimension. In some embodiments, the motion in the second dimension is a rotation about an axis extending in a third direction 12-D3(Z axis).
FIG. 7 is a schematic diagram illustrating an optical system 12-2 according to another embodiment of the present disclosure. The optical system 12-2 in this embodiment further includes a third optical module 12-300, compared to the optical system 12-1 in the previous embodiment. Other elements/components and detailed structures are the same as or correspond to the optical system 12-1 of FIG. 1, described earlier. In some embodiments, the second optical module 12-200 is located between the first and third optical modules 12-100, 12-300.
The third optical module 12-300 is used to connect a fourth optical element 12-LS4 having a second optical axis. Light from the ambient light 12-LT may pass through the fourth optical element 12-LS4 to enter the second optical module 12-200. Wherein the first and second optical axes 12-O1, 12-O2 are not parallel.
In some embodiments, the fourth optical element 12-LS4 includes a plurality of optical lenses and the first optical element 12-LS1 includes at least one optical lens. In some embodiments, the number of optics of the fourth optical element 12-LS4 is greater than the number of optics of the first optical element 12-LS 1.
The third optical module 12-300 includes a third fixed portion 12-301, a fourth movable portion 12-302 and a fourth driving component 12-MC 4. The fourth movable portion 12-302 is used to connect the fourth optical element 12-LS 4. In some embodiments, the fourth driving component 12-MC4 may be an electromagnetic driving component including a coil and a magnetic element, and is used for driving the fourth movable portion 12-302 to move relative to the third fixed portion 12-301. In some embodiments, the fourth driving assembly 12-MC4 is configured to drive the fourth movable portion 12-302 to move in a third dimension relative to the third fixed portion 12-301. In some embodiments, the third dimension is different from the first dimension. In some embodiments, the third dimension is different from the second dimension.
To sum up, the embodiment of the present invention provides an optical system, which includes a first optical module for driving an optical component to move. The first optical module includes: a first movable portion, a first fixed portion, a first driving component and a guiding component. The first movable part is used for connecting a first optical element and can move relative to the first fixed part. The first driving assembly is used for driving the first movable part to move relative to the first fixed part. The guiding component is used for guiding the first movable part to move in a first dimension.
The embodiment of the utility model provides a following one of them advantage or technological effect have at least, through setting up drive assembly and the guide assembly at optical system's side, come to optical element seat guide and drive, let optical system obtain better optical quality to can increase zoom, focus and the wide degree of the scope of the adjustment shooting of optics hand shake prevention, also can sparingly dispose the space, be favorable to the miniaturization. In some embodiments, the optical element may be stabilized or the optical element may be stabilized in motion by the pressing assembly, greatly increasing the optical quality.
Ordinal numbers such as "first," "second," etc., in the specification and in the claims, do not have a sequential relationship with each other, but are used merely to identify two different elements having the same name.
The embodiments described above are described in sufficient detail to enable those skilled in the art to practice the disclosed apparatus, and it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the invention, and therefore the scope of the invention is to be determined by the appended claims.
Claims (10)
1. An optical system, comprising:
a first optical module for driving an optical element to move, the first optical module comprising:
a first movable part for connecting a first optical element;
a first fixed part, wherein the first movable part can move relative to the first fixed part;
the first driving component is used for driving the first movable part to move relative to the first fixed part; and
a guiding component for guiding the first movable part to move in a first dimension.
2. The optical system of claim 1, wherein the first fixed portion has a polygonal structure when viewed along a first optical axis of the first optical element and includes a first side extending along a first direction and a second side extending along a second direction;
the first direction and the second direction are different from each other;
the first direction and the second direction are both vertical to the first optical axis;
the first side edge and the second side edge have different lengths;
the length of the first side edge is greater than that of the second side edge;
when the first driving assembly is observed along the first optical axis direction, the first driving assembly is positioned at the second side edge;
when viewed along the first optical axis, the guide assembly is located at the second side edge;
when viewed along the first optical axis, a first position sensing element of the first optical module is located at the second side.
3. The optical system of claim 2, wherein the first position sensing element is configured to sense movement of the first movable portion relative to the first fixed portion;
the first optical module further includes:
a second movable part for connecting a second optical element;
the second driving component is used for driving the second movable part to move relative to the first fixed part;
a second position sensing component for sensing the movement of the second movable part relative to the first fixed part;
when the second position sensing assembly is observed along the first optical axis direction, the second position sensing assembly is positioned at the second side edge;
when viewed along the first optical axis direction, the first position sensing component and the second position sensing component are at least partially overlapped;
the guiding component is used for guiding the second movable part to move in the first dimension;
the first optical module also comprises a first pressure applying component for generating a first pre-pressure to the first movable part;
the first movable part is stably and movably connected with the guide assembly through the first pre-pressure;
the first pressure applicator assembly further comprises:
a first magnetic element with a strip-shaped structure;
a second magnetic element corresponding to the first magnetic element for generating the first pre-pressure;
at least one of the first and second magnetic elements has a permanent magnet;
the first magnetic element and the second magnetic element are respectively arranged on the first movable part and the first fixed part;
the first position sensing assembly senses the movement of the first movable part relative to the first fixed part by sensing the first magnetic element or the second magnetic element;
when viewed along the central arrangement direction of the first and second magnetic elements, the first position sensing assembly is at least partially overlapped with the first magnetic element or the second magnetic element;
the first pre-pressure direction extends from the first movable part to the second side edge;
a first imaginary line of extension of the first preload force does not pass through the guide member.
4. The optical system of claim 3, wherein the first optical module further comprises a second pressing element for generating a second pre-pressure on the second movable portion;
the second movable part is stably and movably connected with the guide assembly through the second pre-pressure;
the second pressure applicator assembly further comprises:
a third magnetic element with a strip-shaped structure;
the fourth magnetic element corresponds to the third magnetic element to generate the second pre-pressure;
at least one of the third and fourth magnetic elements has a permanent magnet;
the third magnetic element and the fourth magnetic element are respectively arranged on the second movable part and the first fixed part;
the second position sensing assembly senses the movement of the second movable part relative to the first fixed part by sensing the third magnetic element or the fourth magnetic element;
when viewed along the central arrangement direction of the third and fourth magnetic elements, the second position sensing assembly is at least partially overlapped with the third magnetic element or the fourth magnetic element;
the second pre-pressure direction extends from the second movable part to the second side edge;
a second imaginary line of extension of the second preload force does not pass through the guide member.
5. The optical system of claim 4, wherein the first optical module is configured to receive a light beam and the light beam also passes through a second optical module, the second optical module further comprising a third optical element configured to change a traveling direction of an optical axis of the light beam.
6. The optical system of claim 5, wherein the first drive assembly further comprises:
a first piezoelectric element having piezoelectric material;
a first contact element corresponding to the first piezoelectric element;
the first piezoelectric element and the first contact element are respectively and fixedly arranged on the first movable part and the first fixed part;
the first piezoelectric element and the first contact element at least partially overlap when viewed in a direction perpendicular to the first optical axis;
the motion in the first dimension is motion along the first optical axis.
7. The optical system of claim 6, wherein the second drive assembly further comprises:
a second piezoelectric element having piezoelectric material;
a second contact element corresponding to the first piezoelectric element;
the second piezoelectric element and the second contact element are respectively and fixedly arranged on the second movable part and the first fixed part;
the second piezoelectric element at least partially overlaps the second contact element when viewed along a direction perpendicular to the first optical axis;
when viewed along the first optical axis direction, the first and second piezoelectric elements are at least partially overlapped;
the first and second contact elements at least partially overlap when viewed along the direction of the first optical axis;
the first and second contact elements do not overlap when viewed along the second direction.
8. The optical system of claim 7, further comprising a third optical module coupled to a fourth optical element having a second optical axis, wherein the light passes through the fourth optical element and the first and second optical axes are not parallel;
the second optical module further includes:
a third movable part for connecting the third optical element;
the third movable part can move relative to the second fixed part;
the third driving component is used for driving the third movable part to move relative to the second fixed part;
the third driving assembly is used for driving the third movable part to move on a second dimension relative to the second fixed part, and the second dimension is different from the first dimension;
the motion in the second dimension is rotation about an axis extending in a third direction;
the third optical module further includes:
a fourth movable portion for connecting the fourth optical element;
a third fixed part, the fourth movable part can move relative to the third fixed part;
the fourth driving component is used for driving the fourth movable part to move relative to the third fixed part;
the fourth driving component is used for driving the fourth movable part to move on a third dimension relative to the third fixed part, and the third dimension is different from the first dimension;
the third dimension is different from the second dimension.
9. The optical system of claim 8, wherein the second optical module is located between the first and third optical modules.
10. The optical system of claim 9, wherein the fourth optical element comprises a plurality of optical lenses;
the first optical element comprises at least one optical lens, and the number of the optical lenses of the fourth optical element is larger than that of the optical lenses of the first optical element.
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| CN202022634657.7U Active CN214409531U (en) | 2020-04-29 | 2020-11-13 | Optical element driving mechanism |
| CN202120187078.4U Active CN214474349U (en) | 2020-04-29 | 2021-01-22 | Optical system |
| CN202120192292.9U Active CN215416062U (en) | 2020-04-29 | 2021-01-22 | Optical system |
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| CN202120634131.0U Active CN216013835U (en) | 2020-04-29 | 2021-03-26 | Optical element drive mechanism and optical element drive mechanism drive system |
| CN202120622538.1U Active CN215340496U (en) | 2020-04-29 | 2021-03-26 | Optical element driving mechanism |
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| CN202120187078.4U Active CN214474349U (en) | 2020-04-29 | 2021-01-22 | Optical system |
| CN202120192292.9U Active CN215416062U (en) | 2020-04-29 | 2021-01-22 | Optical system |
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| CN202120634131.0U Active CN216013835U (en) | 2020-04-29 | 2021-03-26 | Optical element drive mechanism and optical element drive mechanism drive system |
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| US11711597B2 (en) | 2020-10-22 | 2023-07-25 | Tdk Taiwan Corp. | Polygonal optical mechanism and optical system |
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| CN112946854B (en) * | 2021-04-02 | 2022-09-16 | 新思考电机有限公司 | Winding post structure, carrier, lens driving device, camera device and electronic product |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11711597B2 (en) | 2020-10-22 | 2023-07-25 | Tdk Taiwan Corp. | Polygonal optical mechanism and optical system |
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| CN215340558U (en) | 2021-12-28 |
| CN215340496U (en) | 2021-12-28 |
| CN216013833U (en) | 2022-03-11 |
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| CN214474349U (en) | 2021-10-22 |
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