CN110426825B

CN110426825B - Lens system

Info

Publication number: CN110426825B
Application number: CN201910700259.XA
Authority: CN
Inventors: 胡朝彰; 范振贤; 游证凯; 翁智伟; 陈树山
Original assignee: TDK Taiwan Corp
Current assignee: TDK Taiwan Corp
Priority date: 2016-05-10
Filing date: 2017-04-17
Publication date: 2022-11-25
Anticipated expiration: 2037-04-17
Also published as: CN110426825A; CN107357026A

Abstract

The invention provides a lens system, which comprises a telescopic lens module. The telephoto lens module comprises a first image sensor, a first component and a second component, wherein the second component is arranged between the first image sensor and the first component. The first assembly includes a reflective assembly. The second assembly comprises a first lens and a second driving assembly, and the second driving assembly can drive the first lens to move along the third axial direction. When a first external light enters the telescope module along a first axial direction, the first external light is reflected by the reflecting component and passes through the first lens to reach the first image sensor along a third axial direction approximately, wherein the first axial direction is not parallel to the third axial direction.

Description

Lens system

Technical Field

The present invention relates to a lens system. More particularly, the present invention relates to a lens system having a telephoto lens module.

Background

With the development of technology, many electronic devices (such as cameras or smart phones) have a function of taking pictures or recording videos. However, when the lens with a longer focal length needs to be disposed in the electronic device, the thickness of the electronic device is increased, which is not favorable for the electronic device to be light and thin.

Disclosure of Invention

In order to solve the above-mentioned conventional problems, the present invention provides a lens system including a telescope module. The telephoto lens module comprises a first image sensor, a first component and a second component, wherein the second component is arranged between the first image sensor and the first component. The first assembly includes a reflective assembly. The second assembly comprises a first lens and a second driving assembly, and the second driving assembly can drive the first lens to move along the third axial direction. When a first external light enters the telescope module along a first axial direction, the first external light is reflected by the reflecting component and passes through the first lens to reach the first image sensor along a third axial direction approximately, wherein the first axial direction is not parallel to the third axial direction.

In an embodiment of the invention, the first assembly further includes a first driving assembly, which can drive the reflection assembly to rotate around a second axis, wherein the second axis, the first axis and the third axis are not parallel to each other.

In an embodiment of the invention, the first driving structure includes a first bearing connected to the reflection assembly, two first magnetic assemblies, and two first coils. The first magnetic assemblies are respectively arranged on the opposite surfaces of the first bearing pieces, and the first coils correspond to the first magnetic assemblies.

In an embodiment of the invention, the first driving component can further drive the reflecting component to rotate around the first axial direction.

In an embodiment of the invention, the first driving structure further includes a plurality of first magnetic assemblies and a plurality of first coils. The first magnetic assembly surrounds the first bearing piece, and the first coil surrounds the first magnetic assembly.

In an embodiment of the invention, the first driving structure further includes a first frame, a first printed circuit board disposed on the first frame, and a first elastic assembly connecting the first bearing member and the first frame. The first coil is arranged on the first printed circuit board, and the reflection assembly is arranged on the first elastic assembly.

In an embodiment of the invention, the first driving structure further includes a plurality of first position detectors disposed on the first printed circuit board.

In an embodiment of the invention, the second driving assembly includes a second bearing, two third axial coils, and two third axial magnetic assemblies. The third axial coil is disposed on the second carrier and on an opposite side of the second carrier. The third axial magnetic assembly corresponds to the aforementioned third axial coil.

In an embodiment of the invention, the second driving assembly further includes a second frame having a hollow portion and two second elastic assemblies. The second bearing piece is movably accommodated in the hollow part, and the third axial magnetic component is arranged on the second frame. The second elastic assembly is connected with the second bearing piece and the second frame, and the second frame is arranged between the second elastic assemblies.

In an embodiment of the invention, the second driving assembly further includes a third axial sensor, a third axial pcb, and a third axial position detector, wherein the third axial sensor is disposed on the second frame, the third axial pcb is disposed on the second carrier, and the third axial position detector is disposed on the third axial pcb and corresponds to the third axial sensor.

In an embodiment of the invention, the second driving structure further includes a second axial coil, wherein when a current flows through the second axial coil, electromagnetic induction is generated between the second axial coil and the third axial magnetic assembly, so that the first lens moves along the second axial direction.

In an embodiment of the invention, the second driving structure further includes a second axial printed circuit board and a plurality of suspension ring lines, wherein the second axial coil is disposed on the second axial printed circuit board, the suspension ring lines are connected to the second axial printed circuit board and the second elastic component, and the suspension ring lines have a rectangular cross section, and a length of the rectangular cross section along the first axial direction is greater than a width of the rectangular cross section along the second axial direction.

In an embodiment of the invention, the second driving structure further includes a second axial printed circuit board and a second axial position detector, wherein the second axial coil and the second axial position detector are disposed on the second axial printed circuit board.

In an embodiment of the invention, the second driving assembly can drive the first lens to move along the first axial direction.

In an embodiment of the invention, the second driving structure further includes a first axial coil and a plurality of first axial magnetic assemblies, wherein the first axial magnetic assemblies are disposed on the second frame and located between the first axial coil and the second bearing, and the second bearing is disposed between the first axial coil and the second axial coil.

In an embodiment of the invention, the two driving structures further include a first axial printed circuit board and a first axial position detector, wherein the first axial coil and the first axial position detector are disposed on the first axial printed circuit board.

In an embodiment of the invention, the first lens includes two planes, and the planes are respectively formed on opposite sides of the first lens in the first axial direction.

In an embodiment of the invention, the lens system further includes a wide-angle end lens module including a second lens and a second image sensor, wherein a second external light enters the wide-angle end lens module along the first axis, and passes through the second lens to reach the second image sensor.

The present invention is directed to a lens system, in which a reflection assembly of a first assembly of a telescopic lens module is rotatable, and/or a first axial magnetic assembly/a first axial coil and a second axial coil of a second assembly are disposed on opposite sides of a second frame, so that a thickness of the lens system in a first axial direction can be effectively reduced. It should be understood that, although the first, second and third axial directions in the above embodiments are substantially perpendicular to each other, they only need to satisfy the condition of being non-parallel to each other, so that the first, second and third axial directions may not be perpendicular to each other and are not parallel to each other.

Drawings

Fig. 1 is a schematic view of an electronic device according to an embodiment of the invention.

Fig. 2 is a schematic view of a telephoto lens module according to an embodiment of the invention.

Fig. 3 is an exploded view of a first component of an embodiment of the present invention.

Fig. 4 is an exploded view of a second assembly in accordance with one embodiment of the present invention.

Fig. 5 is a schematic view of a telephoto lens module according to another embodiment of the invention.

Fig. 6 is an exploded view of a first assembly in accordance with another embodiment of the present invention.

Fig. 7 is an exploded view of a second assembly in accordance with another embodiment of the present invention.

Fig. 8 is a schematic view of a telephoto lens module according to another embodiment of the present invention.

Fig. 9 is an exploded view of a second assembly in accordance with another embodiment of the present invention.

FIG. 10A is a schematic view of a suspension link connected to a second elastic element according to an embodiment of the present invention.

FIG. 10B is a schematic view of another embodiment of the present invention with the bail line connected to the second resilient member.

Fig. 11 is a schematic view of a first lens according to an embodiment of the invention.

Fig. 12 is a schematic view of a wide-end lens module according to an embodiment of the invention.

Fig. 13 is an exploded view of a wide-end lens module according to an embodiment of the invention.

Fig. 14A is a schematic configuration diagram of a second magnetic element according to an embodiment of the present invention.

Fig. 14B is a schematic configuration diagram of a second magnetic element according to another embodiment of the present invention.

Fig. 15 is a schematic view of a lens system according to another embodiment of the invention.

The reference numbers are as follows:

10. lens system

11. Telescope module

12. Wide-angle end lens module

20. Electronic device

1100. Reflection assembly

1200. A first elastic component

1210. Outer ring section

1220. Inner ring section

1300. First bearing piece

1400. First magnetic assembly

1500. First frame

1510. Hole(s)

1600. First coil

1700. First position detector

1800. First printed circuit board

2110. Top cover

2111. Perforation

2120. Outer cover

2130. Bottom cover

2131. Perforation

2210. First axial position detector

2220. First axial printed circuit board

2230. First axial coil

2240. First axial magnetic assembly

2310. Second axial position detector

2320. Second axial printed circuit board

2330. Second axial coil

2400. Second elastic component

2410. Concave part

2500. Suspension loop wire

2600. Second frame

2610. Hollow part

2700. Second bearing part

2800. First lens

2810. Plane surface

2910. Third axial position detector

2920. Third axial printed circuit board

2930. Third axial coil

2940. Third axial magnetic assembly

2950. Third axial sensor

3100. Second lens

3200. Elastic connecting piece

3300. Lens holder

3400. Driving coil

3500. Frame structure

3600. Second magnetic assembly

3700. Suspension loop wire

3800. Base seat

3810. Coil flat plate

3820. Circuit board

3830. Bottom cover

3900. Position detector

3910 X-axis direction position detector

3920 Z-axis direction position detector

B substrate

C. C1, C2 casing

L1 first external light

L2 second external light ray

M1, M1' first component

M2, M2' second component

O opening

R containing space

S1 first image sensor

S2 second image sensor

Length of W1

Width of W2

Detailed Description

The following describes a lens system according to an embodiment of the present invention. It should be appreciated, however, that the present embodiments provide many suitable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments disclosed are merely illustrative of specific ways to make and use the invention, and do not delimit the scope of the invention.

Unless otherwise defined, 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.

Referring to fig. 1, a lens system 10 according to an embodiment of the invention may be installed in an electronic device 20 for taking pictures or taking pictures, wherein the electronic device 20 may be, for example, a smart phone or a digital camera. The lens system 10 has two lens modules including a telescopic lens module 11 and a wide-angle end lens module 12. During photographing or filming, the two lens modules receive light and form images, and the images can be transmitted to a processor (not shown) disposed in the electronic device 20, and post-processing of the images is performed by the processor.

As shown in fig. 2, the telephoto lens module 11 includes a housing C1, a first module M1, a second module M2, and a first image sensor S1. The housing C1 has an accommodating space R formed therein, and an opening O formed in a wall surface thereof and communicating with the accommodating space R. The first module M1, the second module M2 and the first image sensor S1 are disposed in the accommodating space R, the second module M2 is located between the first module M1 and the first image sensor S1, and the opening O is formed beside the first module M1.

When a first external light L1 passes through the opening O along the Y-axis direction (first axial direction) and enters the accommodating space R of the remote lens module 11, the first external light L1 is reflected by the first component M1, and the reflected first external light L1 passes through the second component M2 and reaches the first image sensor S1 along the Z-axis direction (third axial direction), so that the first image sensor S1 can form an image.

Fig. 3 is an exploded view of the first assembly M1 in an embodiment of the present invention. Referring to fig. 2 and 3, in the present embodiment, the first assembly M1 includes a reflective assembly 1100 and a first driving structure, wherein the first driving structure includes a first elastic assembly 1200, a first carrier 1300, a plurality of first magnetic assemblies 1400, a first frame 1500, a plurality of first coils 1600, a plurality of first position detectors 1700, and a first pcb 1800.

The first elastic assembly 1200 has an outer ring section 1210 and an inner ring section 1220, wherein the first frame 1500 is connected to the outer ring section 1210, and the reflective assembly 1100 and the first supporting member 1300 are respectively fixed on the opposite surfaces of the inner ring section 1220. In other words, the reflective element 1100 and the first supporting element 1300 are connected to each other via the first elastic element 1200. In addition, the first magnetic assembly 1400 is fixed on the first supporting member 1300 and surrounds the first supporting member 1300.

The first printed circuit board 1800 is fixed on the housing C1, and the first frame 1500, the first coil 1600 and the first position detector 1700 are fixed on the first printed circuit board 1800. The first coil 1600 and the first position detector 1700 can pass through the hole 1510 of the first frame 1500, correspond to and surround the first magnetic assembly 1400, wherein the first position detector 1700 can detect the position of the first magnetic assembly 1400.

The reflective assembly 1100 and the first supporting member 1300 are suspended from the first frame 1500 by the first elastic assembly 1200. When a user passes a current to the first coil 1600, electromagnetic induction is generated between the first coil 1600 and the first magnetic assembly 1400, so that the reflective assembly 1100 and the first supporting member 1300 can rotate around the Y-axis direction (first axial direction) and/or the X-axis direction (second axial direction) relative to the first frame 1500, thereby finely adjusting the first external light L1 to reach the position of the first image sensor S1.

Fig. 4 is an exploded view of the second module M2 in the present embodiment. As shown in fig. 2 and 4, the second assembly M2 mainly includes a top cover 2110, a housing 2120, a bottom cover 2130, a first lens 2800, and a second driving structure, wherein the second driving structure includes two second elastic assemblies 2400, a second frame 2600, a second carrier 2700, a third axial position detector 2910, a third axial printed circuit board 2920, two third axial coils 2930, two third axial magnetic assemblies 2940, and a third axial sensor 2950.

The two second elastic assemblies 2400 are connected to the second frame 2600 and the second carrier 2700 and located on opposite sides of the second carrier 2700, so that the second carrier 2700 is movably suspended in the hollow portion 2610 of the second frame 2600. The first lens 2800 is disposed in the second carrier 2700 and supported by the second carrier 2700. Third axial coils 2930 and third axial magnetic assemblies 2940 are respectively disposed on the second carrier 2700 and the second frame 2600 and correspond to each other. In the X-axis direction, two third axial coils 2930 are located on opposite sides of the second carrier 2700, and two third axial magnetic assemblies 2940 are disposed on opposite inner surfaces of the second frame 2600. When a current flows in the third axial coil 2930, electromagnetic induction is generated between the third axial coil 2930 and the third axial magnetic assembly 2940, and the second carrier 2700 and the first lens 2800 can thus move in the Z-axis direction (third axial direction) with respect to the second frame 2600.

Third axial sensor 2950 is fixed to second frame 2600. The third axial pcb 2920 is fixed to the second carrier 2700, and the third axial position detector 2910 is disposed on the third axial pcb 2920, so that when the second carrier 2700 moves, the third axial pcb 2920 and the third axial position detector 2910 move accordingly. As the second carrier 2700 moves, the third axial position detector 2910 may detect the relative position of the third axial sensor 2950 thereto.

The third axial position detector 2910 may be a Hall Effect Sensor (Hall Sensor), a magnetoresistive Effect Sensor (MR Sensor), a Giant magnetoresistive Effect Sensor (GMR Sensor), a Tunneling magnetoresistive Effect Sensor (TMR Sensor), an Optical Sensor (Optical Encoder), or an Infrared Sensor (Infrared Sensor). When a hall effect sensor, a magnetoresistance effect sensor, a giant magnetoresistance effect sensor, or a tunneling magnetoresistance effect sensor is used as the third axial position detector 2910, the third axial sensor 2950 may be a magnet. When an optical sensor or an infrared sensor is used as the third axial position detector 2910, the third axial sensor 2950 may be a reflective sheet.

Referring to fig. 4, the top cover 2110 and the bottom cover 2130 may be disposed on two sides of the housing 2120 and combined therewith to form a box-shaped structure, and the second elastic element 2400, the second frame 2600, the second carrier 2700, the first lens 2800, the third axial position detector 2910, the third axial pcb 2920, the third axial coil 2930, the third axial magnetic element 2940 and the third axial sensor 2950 are all accommodated in the box-shaped structure.

Since the top cover 2110, the housing 2120 and the bottom cover 2130 in this embodiment are made of non-conductive materials, a short circuit or interference between the first module M1 and the second module M2 can be avoided. It should be noted that the top cover 2110 and the bottom cover 2130 are respectively formed with through

holes

2111 and 2131 corresponding in position, so that the first external light L1 reflected by the first component M1 and moving in the Z-axis direction (third axis direction) can smoothly pass through the through hole 2131 of the bottom cover 2130 to reach the first lens 2800, and can smoothly pass through the through hole 2111 of the top cover 2110 to reach the first image sensor S1.

In the embodiment, since the first driving structure of the first assembly M1 can drive the reflection assembly 1100 to rotate around the Y-axis direction (the first axial direction) and the X-axis direction (the second axial direction), the position of the first external light L1 reaching the first Image sensor S1 can be adjusted to achieve an Optical Image Stabilization (OIS) effect. Also, since the second driving structure of the second assembly M2 can drive the first lens 2800 to move along the Z-axis (third axis), the distance between the first lens 2800 and the first image sensor S1 can be adjusted to achieve the Auto Focus (AF) effect. Furthermore, since the second carrier 2700 of the second module M2 is not provided with a magnetic component in the Y-axis direction, the thicknesses of the second module M2 and the telephoto lens module 11 in the Y-axis direction can be greatly reduced.

Fig. 5 is a schematic diagram of a telephoto lens module 11 according to another embodiment of the invention, and fig. 6 and 7 respectively show exploded views of a first assembly M1 'and a second assembly M2' in the embodiment. As shown in fig. 5 and 6, the first assembly M1' includes a reflective element 1100 and a first driving structure, the first driving structure includes a first elastic element 1200, a first supporting element 1300, two first magnetic elements 1400, a first frame 1500, two first coils 1600, a plurality of first position detectors 1700, and a first printed circuit board 1800.

The first elastic assembly 1200 has an outer ring section 1210 and an inner ring section 1220, wherein the first frame 1500 is connected to the outer ring section 1210, and the reflective assembly 1100 and the first supporting member 1300 are respectively fixed on the opposite surfaces of the inner ring section 1220. In other words, the reflective element 1100 and the first load bearing member 1300 are connected to each other by the first resilient element 1200. In addition, the first magnetic assembly 1400 is fixed on the first supporting member 1300 and is located on the opposite side of the first supporting member 1300.

The first printed circuit board 1800 is fixed on the housing C1, and the first frame 1500, the first coil 1600 and the first position detector 1700 are fixed on the first printed circuit board 1800. The first coil 1600 and the first position detector 1700 can pass through the hole 1510 of the first frame 1500 to correspond to the first magnetic assembly 1400, wherein the first position detector 1700 can detect the position of the first magnetic assembly 1400.

The reflective assembly 1100 and the first supporting member 1300 are suspended from the first frame 1500 by the first elastic assembly 1200. When a user applies a current to the first coil 1600, electromagnetic induction is generated between the first coil 1600 and the first magnetic assembly 1400, so that the reflective assembly 1100 and the first supporting member 1300 can rotate around the X-axis direction (the second axial direction) relative to the first frame 1500, thereby finely adjusting the position of the first external light L1 on the first image sensor S1 in the Y-axis direction (the first axial direction).

Referring to fig. 5 and fig. 7, in the present embodiment, the second assembly M2' mainly includes a top cover 2110, a housing 2120, a bottom cover 2130, a first lens 2800, and a second driving structure, wherein the second driving structure includes a second axial position detector 2310, a second axial printed circuit board 2320, a second axial coil 2330, two second elastic elements 2400, a plurality of suspension wires 2500, a second frame 2600, a second carrier 2700, a third axial position detector 2910, a third axial printed circuit board 2920, two third axial coils 2930, two third axial magnetic elements 2940, and a third axial sensor 2950.

Third axial sensor 2950 is fixed to second frame 2600. The third axial pcb 2920 is fixed to the second carrier 2700, and the third axial position detector 2910 is disposed on the third axial pcb 2920, so that when the second carrier 2700 moves, the third axial pcb 2920 and the third axial position detector 2910 also move. When the second carrier 2700 moves, the third axial position detector 2910 may detect the relative position of the third axial sensor 2950 to it in the Z-axis direction.

The second axial pcb 2320 and the second axial coil 2330 are disposed between the bottom cover 2130 and the second carrier 2700, and the second axial position detector 2310 and the second axial coil 2330 are disposed on the second axial pcb 2320, the second axial position detector 2310 is used to detect the position of the third axial magnetic assembly 2940 in the X-axis direction. The aforementioned suspension loop wire 2500 connects the second axial printed circuit board 2320 and the second elastic member 2400.

When a current flows into the second axial coil 2330, electromagnetic induction is generated between the second axial coil 2330 and the third axial magnetic assembly 2940, so that the second frame 2600, the second carrier 2700 and the first lens 2800 are moved in the X-axis direction (second axial direction) with respect to the second axial printed circuit board 2320.

The second and third

axial position detectors

2310 and 2910 may be hall effect sensors, magnetoresistance effect sensors, giant magnetoresistance effect sensors, or tunneling magnetoresistance effect sensors, and the third axial position detector 2910 may further be an optical sensor, or an infrared sensor. When a hall effect sensor, a magnetoresistance effect sensor, a giant magnetoresistance effect sensor, or a tunneling magnetoresistance effect sensor is used as the third axial position detector 2910, the third axial sensor 2950 may be a magnet. When an optical sensor or an infrared sensor is used as the third axial position detector 2910, the third axial sensor 2950 may be a reflective sheet.

As shown in fig. 7, the top cover 2110 and the bottom cover 2130 may be disposed on two sides of the housing 2120 and combined therewith to form a box-shaped structure, and the second axial position detector 2310, the second axial printed circuit board 2320, the second axial coil 2330, the second elastic element 2400, the suspension wire 2500, the second frame 2600, the second carrier 2700, the first lens 2800, the third axial position detector 2910, the third axial printed circuit board 2920, the third axial coil 2930, the third axial magnetic element 2940, and the third axial sensor 2950 are all accommodated in the box-shaped structure.

Since the top cover 2110, the housing 2120 and the bottom cover 2130 are made of non-conductive materials, a short circuit or interference between the first module M1 'and the second module M2' can be avoided. It should be noted that the top cover 2110 and the bottom cover 2130 are respectively formed with through

holes

2111 and 2131 corresponding in position, so that the first external light L1 reflected by the first component M1' and moving in the Z-axis direction (third axis direction) can smoothly pass through the through hole 2131 of the bottom cover 2130 to reach the first lens 2800, and can smoothly pass through the through hole 2111 of the top cover 2110 to reach the first image sensor S1.

In this embodiment, since the first driving structure of the first module M1 'can drive the reflection module 1100 to rotate around the X-axis direction (second axial direction), the position of the first external light L1 on the first image sensor S1 in the Y-axis direction (first axial direction) can be adjusted, and the second driving structure of the second module M2' can drive the first lens 2800 to move along the X-axis direction (second axial direction), so that the optical anti-shake effect can be achieved. In addition, the second driving structure of the second module M2' can drive the first lens 2800 to move along the Z-axis (third axis), so that the distance between the first lens 2800 and the first image sensor S1 can be adjusted to achieve the effect of auto-focusing. Furthermore, since the second carrier 2700 of the second module M2 'is not provided with a magnetic component in the Y-axis direction, the thicknesses of the second module M2' and the telephoto lens module 11 in the Y-axis direction can be greatly reduced.

Fig. 8 is a schematic view of a telephoto lens module 11 according to another embodiment of the invention, in which the first element M1 ″ only includes a reflective element 1100 fixed on the housing C1. After being reflected by the reflection member 1100, the first external light L1 passing through the opening O along the Y-axis direction (first axial direction) passes through the second member M2 and reaches the first image sensor S1 substantially along the Z-axis direction (third axial direction).

Fig. 9 is an exploded view of the second assembly M2 "in this embodiment. As shown in fig. 8 and 9, the second assembly M2 ″ mainly includes a top cover 2110, a housing 2120, a bottom cover 2130, a first lens 2800, and a second driving structure, wherein the second driving structure includes a first axial position detector 2210, a first axial printed circuit board 2220, a first axial coil 2230, a plurality of first axial magnetic assemblies 2240, a second axial position detector 2310, a second axial printed circuit board 2320, a second axial coil 2330, two second elastic assemblies 2400, a plurality of lifting eye lines 2500, a second frame 2600, a second carrier 2700, a third axial position detector 2910, a third axial printed circuit board 2920, two third axial coils 2930, two third axial magnetic assemblies 2940, and a third axial sensor 2950.

The two second elastic assemblies 2400 are connected to the second frame 2600 and the second carrier 2700 and are respectively located at opposite sides of the second carrier 2700, so that the second carrier 2700 is movably suspended in the hollow 2610 of the second frame 2600. The first lens 2800 is disposed in the second carrier 2700 and supported by the second carrier 2700. Third axial coils 2930 and third axial magnetic assemblies 2940 are respectively disposed on the second carrier 2700 and the second frame 2600 and correspond to each other. In the X-axis direction, two third axial coils 2930 are located on opposite sides of the second carrier 2700, and two third axial magnetic assemblies 2940 are disposed on opposite inner surfaces of the second frame 2600. When a current flows in the third axial coil 2930, electromagnetic induction is generated between the third axial coil 2930 and the third axial magnetic assembly 2940, and the second carrier 2700 and the first lens 2800 can thus move in the Z-axis direction (third axial direction) with respect to the second frame 2600.

Third axial sensor 2950 is fixed to second frame 2600. The third axial pcb 2920 is fixed to the second carrier 2700, and the third axial position detector 2910 is disposed on the third axial pcb 2920, so that when the second carrier 2700 moves, the third axial pcb 2920 and the third axial position detector 2910 also move. When the second carrier 2700 moves, the third axial position detector 2910 may detect the relative position of the third axial sensor 2950 to its Z-axis direction.

A first axial position detector 2210, a first axial printed circuit board 2220, a first axial coil 2230 and a first axial magnetic assembly 2240 are disposed on the other side of the second frame 2600/second carrier 2700. That is, in the Z-axis direction, the second frame 2600/second carrier 2700 is disposed between the first axial coil 2230 and the second axial coil 2330.

A first axial coil 2230 and a first axial magnetic assembly 2240 are fixed on the first axial printed circuit board 2220 and the second frame 2600, respectively, and the first axial magnetic assembly 2240 is located between the first axial coil 2230 and the second frame 2600. When a current flows through the first axial coil 2230, an electromagnetic induction is generated between the first axial coil 2230 and the first axial magnetic assembly 2240, so that the second frame 2600, the second carrier 2700, and the first lens 2800 move in the Y-axis direction (first axial direction) with respect to the first axial pcb 2220.

The first axial position detector 2210 is disposed on the first axial pcb 2220 for detecting the position of the first axial magnetic element 2240 in the Y-axis direction.

The first, second, and third

axial position detectors

2210, 2310, and 2910 may be hall effect sensors, magneto-resistive effect sensors, giant magneto-resistive effect sensors, or tunneling magneto-resistive effect sensors, and the third axial position detector 2910 may be an optical sensor, or an infrared sensor. When a hall effect sensor, a magnetoresistance effect sensor, a giant magnetoresistance effect sensor, or a tunneling magnetoresistance effect sensor is used as the third axial position detector 2910, the third axial sensor 2950 may be a magnet. When an optical sensor or an infrared sensor is used as the third axial position detector 2910, the third axial sensor 2950 may be a reflective sheet.

As shown in fig. 9, the top cover 2110 and the bottom cover 2130 may be disposed on two sides of the housing 2120 and combined therewith to form a box-shaped structure, and the first axial position detector 2210, the first axial printed circuit board 2220, the first axial coil 2230, the first axial magnetic assembly 2240, the second axial position detector 2310, the second axial printed circuit board 2320, the second axial coil 2330, the second elastic assembly 2400, the suspension wire 2500, the second frame 2600, the second carrier 2700, the first lens 2800, the third axial position detector 2910, the third axial printed circuit board 2920, the third axial coil 2930, the third axial magnetic assembly 2940, and the third axial sensor 2950 are all accommodated in the box-shaped structure.

In this embodiment, the second driving structure of the second assembly M2 ″ can drive the first lens 2800 to move along the Y-axis direction (first axial direction) and the X-axis direction (second axial direction), so as to achieve the effect of optical anti-shake. In addition, the second driving structure may further drive the first lens 2800 to move along the Z-axis (third axis), so that the distance between the first lens 2800 and the first image sensor S1 may be adjusted to achieve the effect of auto-focusing. Furthermore, since the second carrier 2700 of the second module M2 ″ has no magnetic component in the Y-axis direction, the thicknesses of the second module M2 ″ and the telephoto lens module 11 in the Y-axis direction can be greatly reduced.

It should be noted that, as long as the telescope module 11 can achieve the optical anti-shake and auto-focusing effects at the same time, the first assemblies M1, M1', M1 ″ can be selectively matched with the second assemblies M2, M2', M2 ″, without being limited to the foregoing embodiments. Specifically, the first module M1 can be collocated with the second modules M2, M2', M2", the first module M1' can be collocated with the second modules M2', M2", and the first module M1 "can be collocated with M2". Preferably, the housing C1 of the telescope module 11 is provided with a first module M1 and a second module M2", so that more adjustment means can be provided.

Referring to fig. 10A and 10B, in the second assemblies M2 'and M2", since the second frame 2600 and the second supporting member 2700 do not move in the Y-axis direction or have a displacement in the Y-axis direction smaller than that in the X-axis direction, the lifting ring line 2500 in the second assemblies M2' and M2" may have a rectangular cross section, and the length W1 of the rectangular cross section in the Y-axis direction (the first axial direction) is greater than the width W2 thereof in the X-axis direction (the second axial direction). Thus, the loop line 2500 has greater flexibility in the Y-axis direction (first axis direction) than in the X-axis direction.

The aforementioned suspension ring line 2500 may enter the recess 2410 of the second elastic member 2400, and the width and the opening of the recess 2410 may be changed according to the entering direction of the suspension ring line 2500. In the embodiment of fig. 10A, the opening of the recess 2410 faces the X-axis direction and has a width equal to the length W1 of the suspension loop wire 2500. In the embodiment of fig. 10B, the opening of the recess 2410 faces the Y-axis direction and has a width equal to the width W2 of the suspension loop line 2500.

Referring to fig. 11, in the above embodiments, the first lens 2800 includes two planes 2810 parallel to each other. Since the plane 2810 is formed on the opposite side of the first lens 2800 in the Y-axis direction, the thicknesses of the second module M2 ″ and the telephoto lens module 11 in the Y-axis direction can be further reduced. The flat surface 2810 may be formed by cutting.

As shown in fig. 12 and 13, in the foregoing embodiment, the wide-angle lens module 12 mainly includes a housing C2, a second image sensor S2, a second lens 3100, two elastic connectors 3200, a lens holder 3300, a driving coil 3400, a frame 3500, a plurality of second magnetic elements 3600, a plurality of suspension loops 3700, a base 3800, and a plurality of position detectors 3900, wherein a focal length of the first lens 2800 is greater than a focal length of the second lens 3100.

The elastic coupling member 3200 connects the lens holder 3300 and the frame 3500, and is located at an opposite side of the lens holder 3300 to suspend the lens holder 3300 in the frame 3500. A second lens 3100 and a driving coil 3400 are provided on the lens holder 3300, and the driving coil 3400 surrounds the second lens 3100. A second magnetic assembly 3600 is disposed on the frame 3500 and surrounds the drive coil 3400.

When a current is applied to the driving coil 3400, electromagnetic induction is generated between the driving coil 3400 and the second magnetic assembly 3600, so that the lens holder 3300 and the second lens 3100 are driven to move along the Y-axis direction relative to the second magnetic assembly 3600, and an effect of auto-focusing is achieved.

The base 3800 includes a coil plate 3810, a circuit board 3820 and a bottom cover 3830. The coil plate 3810 is fixed on the circuit board 3820 and electrically connected to the circuit board 3820, and the circuit board 3820 is fixed on the bottom cover 3830. The loop wire 3700 connects the coil plate 3810, the circuit board 3820, and the elastic connector 3200. In addition, the second image sensor S2 is disposed under the bottom cover 3830 and fixed with respect to the base 200, so that a second external light L2 can pass through the second lens 3100 and form an image on the second image sensor S2.

When a current flows through the coil plate 3810, an electromagnetic induction is generated between the coil plate 3810 and the second magnetic element 3600, and the lens holder 3300 and the frame 3500 can move along the X-axis direction and/or the Z-axis direction relative to the base 3800, so as to achieve the effect of optical anti-shake.

The position detector 3900 includes an X-axis position detector 3910 and a Z-axis position detector 3920, both of which are fixed to the bottom cover 3830. The X-axis position detector 3910 detects the displacement of the second magnetic assembly 3600 in the X-axis direction, and the Y-axis position detector 3920 detects the displacement of the magnetic assembly 3910 in the Y-axis direction.

The housing C2 may be assembled with the bottom cover 3830 such that the aforementioned second image sensor S2, second lens 3100, elastic connector 3200, lens holder 3300, driving coil 3400, frame 3500, second magnetic assembly 3600, suspension loop line 3700, base 3800 and position detector 3900 are disposed therebetween. It should be noted that the housing C2 and the bottom cover 38300 may be respectively formed with openings corresponding to the second image sensor S2, so that the second external light L2 may pass through the openings to reach the second lens 3100 and the second image sensor S2.

Specifically, as shown in fig. 14A and 14B, in some embodiments, the second magnetic element 3600 adjacent to the telephoto end lens module 11 in the wide-angle end lens module 12 is configured to avoid the first magnetic element 1400 adjacent to the wide-angle end lens module 12 in the telephoto end lens module 11, so as to avoid magnetic interference (magnetic interference).

In some embodiments, the wide-angle end lens module 12 may omit the driving coil 3400, the frame 3500, the second magnetic element 3600, the flying ring line 3700, the base 3800, and the plurality of position detectors 3900 for moving the second lens 3100, so that the second lens 3100 is fixed relative to the second image sensor S2.

As shown in fig. 15, in another embodiment, the housings C1 and C2 may be integrally formed to form a single housing C, that is, the telephoto lens module 11 and the wide-angle lens module 12 are disposed in the housing C, and both are fixed on the substrate B of the housing C. In this way, the time for adjusting the relative heights of the telephoto lens module 11 and the wide-angle lens module 12 can be saved, and the occurrence of assembly errors can be avoided.

In summary, the present invention provides a lens system, in which the reflective element of the first element of the telescopic lens module can rotate, and/or the first axial magnetic element/the first axial coil and the second axial coil of the second element are disposed on opposite sides of the second frame, so as to effectively reduce the thickness of the lens system in the first axial direction. It should be understood that, although the first, second and third axial directions in the above embodiments are substantially perpendicular to each other, they only need to satisfy the condition of being non-parallel to each other, so that the first, second and third axial directions may not be perpendicular to each other and are not parallel to each other.

Although embodiments of the present invention and their advantages have been disclosed, it should be understood that various changes, substitutions and alterations can be made herein by those skilled in the art without departing from the spirit and scope of the invention. Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification, but it is to be understood that any process, machine, manufacture, composition of matter, means, method and steps, presently existing or later to be developed, that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present application. Accordingly, the scope of the present application is intended to include the processes, machines, manufacture, compositions of matter, means, methods, or steps described in the specification. In addition, each claim constitutes a separate embodiment, and the scope of protection of the present invention also includes combinations of the various claims and embodiments.

While the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the present invention should be determined only by the following claims. Furthermore, each claim constitutes a separate embodiment, and combinations of various claims and embodiments are within the scope of the invention.

Claims

1. A lens system, comprising:

a telescope module comprising:

the first component comprises a first driving structure and a reflecting component, the reflecting component is connected with the first driving structure, and the first driving structure can drive the reflecting component to rotate around a first axial direction and a second axial direction; and

a second assembly including a second driving structure and a first lens, wherein the second driving structure can drive the first lens to move along a third axial direction, and the first and second assemblies are arranged along the third axial direction;

when a current is applied to the second axial coil, electromagnetic induction is generated between the second axial coil and the third axial magnetic component, so that the first lens moves along the second axial direction, and when another current flows into the third axial coil, electromagnetic induction is generated between the third axial coil and the third axial magnetic component, so that the first lens moves along the third axial direction;

the first external light is incident to the reflection assembly along the first axial direction, and the first external light is reflected by the reflection assembly and then passes through the second axial coil and the first lens along the third axial direction approximately, wherein the first axial direction, the second axial direction and the third axial direction are not parallel to each other, the third axial magnetic assembly is not arranged on one side of the second assembly perpendicular to the first axial direction, and in the first axial direction, the first lens further comprises two planes which are parallel to each other and formed on the opposite side of the first lens.

2. The lens system as claimed in claim 1, wherein the first driving structure further comprises a plurality of first coils and a first printed circuit board, wherein the plurality of coils are disposed on the first printed circuit board.

3. The lens system as claimed in claim 2, wherein the first driving structure further comprises a position detector disposed on the first printed circuit board.

4. The lens system as claimed in claim 1, further comprising a wide-angle lens module, the wide-angle lens module and the telephoto lens module being arranged along an axial direction, and the wide-angle lens module comprising a second magnetic element and a second lens, wherein the second magnetic element is disposed at a side of the second lens, and the second magnetic element and the first magnetic element of the telephoto lens module do not overlap each other in the axial direction.

5. The lens system as claimed in claim 4, wherein the telephoto lens module and the wide-angle lens module are disposed in a housing.

6. The lens system of claim 4, wherein the focal length of the first lens is greater than the focal length of the second lens.

7. The lens system as claimed in claim 4, wherein the wide-angle lens module further comprises a bottom cover and a coil plate disposed on the bottom cover, wherein the coil plate and the second magnetic element generate electromagnetic induction to drive the second lens to move relative to the bottom cover along a direction perpendicular to the first axial direction.

8. The lens system as claimed in claim 4, wherein a second external light enters the wide-angle end lens module in the first axial direction and passes through the second lens.

9. The lens system as claimed in claim 1, wherein the first driving structure further comprises a plurality of first magnetic elements surrounding a first carrier and a first carrier carrying the reflective element.