CN108873239A - Optical system - Google Patents

Abstract

An embodiment of the present disclosure provides an optical system, which includes a photosensitive element, at least one optical lens, a reflective unit, and a first driving element. The reflecting unit is provided with a reflecting surface which is configured to receive an incident light and reflect a reflected light, and the reflected light is emitted into the photosensitive assembly through the optical lens. The first driving component is configured to control the reflecting unit to move along a first axial direction so as to adjust a focusing position of the reflected light on the photosensitive component.

Description

optical system

technical field

The invention relates to an optical system, in particular to an optical system with an optical anti-shake function.

Background technique

With the development of technology, many electronic devices (such as tablet computers or smart phones) now have the function of taking photos or recording videos. By setting the lens system with a long focal length, users can take photos with different effects, so that electronic devices with a lens system with a long focal length are gradually popular among the public.

However, when a lens with a longer focal length needs to be disposed in the aforementioned electronic device, the thickness of the electronic device will increase, which is not conducive to the thinning of the electronic device. Therefore, a reflective component is generally provided in the lens system to guide the incident light to the sensing component in the lens system through reflection. With such a configuration, the thickness of the electronic device can be reduced. However, when the electronic device is shaken, the position where the incident light reaches the sensing component may deviate from a predetermined position, resulting in unclear imaging produced by the lens system.

Therefore, how to avoid the problem of blurred images when the lens system is shaken through the structural design of the lens system is a topic worth exploring and solving.

Contents of the invention

In view of this, the present invention proposes an optical system with multiple driving components to solve the above problems.

The embodiment of the invention discloses an optical system, which includes a photosensitive component, at least one optical lens, a reflection unit and a first driving component. The reflective unit has a reflective surface configured to receive an incident light and reflect a reflected light, and the reflected light enters the photosensitive component through the optical lens. The first driving component is configured to control the reflection unit to move along a first axis, so as to adjust a focus position of reflected light on the photosensitive component.

According to some embodiments of the present invention, the reflection unit and the optical lens are arranged along a first direction, the incident light enters the reflection unit along a second direction, and a third direction is perpendicular to the first direction and the second direction, wherein The first axis is not parallel to the third direction. According to some embodiments of the present invention, the first direction is substantially perpendicular to a photosensitive surface of the photosensitive element.

According to some embodiments of the present invention, the reflective surface has an arc structure. According to some embodiments of the present invention, the center of the arc structure corresponds to the center of the incident light. According to some embodiments of the present invention, the reflective surface has a radius, and the radius is approximately between 100 mm and 1000 mm. According to some embodiments of the present invention, the reflective surface further has a plane, and the arc structure surrounds the plane. According to some embodiments of the present invention, the arc structure is a convex structure or a concave structure.

According to some embodiments of the present invention, the optical system further includes a second driving component configured to drive the reflection unit to rotate around a second axis. According to some embodiments of the present invention, the optical system further includes a third driving component configured to drive the reflection unit to rotate around a third axis.

The present invention provides an optical system with a long focal length installed in an electronic device for capturing images. The optical system can have a lens module, a reflection module, a photosensitive component and a plurality of driving components. Wherein, the reflection module includes a reflection unit, which can reflect the external light to the lens module, and then transmit it to the photosensitive component to generate a digital image. It is worth noting that when the optical system is shaken, multiple driving components can control the reflective unit to move along a first axis, rotate around a second axis and/or rotate around a third axis, so as to adjust the reflected light in the photosensitive The focus position on the component can achieve the purpose of optical anti-shake, and can improve the image quality of the photosensitive component.

In some embodiments, a reflective surface of the reflective unit is a plane, and the plurality of driving components can only control the reflective unit to move along the first axis, so as to achieve the purpose of compensating the focus position. In addition, in some embodiments, the reflective surface of the reflective unit may further include an arc structure. Based on the design of the arc structure, the focus position of the light reflected on the photosensitive component around the reflective surface can be further made more precise.

Additional functions and advantages of the present invention will be disclosed in the following description, and part of them can be clearly understood from the following description, or can be learned through practice from the disclosed principles. The functions and advantages of the invention may be realized and obtained by combinations of instruments or devices particularly pointed out in the appended claims. These and other features of the present invention will become more apparent from the following description and claims, or can be learned through practice from the principles disclosed in the present invention.

Description of drawings

FIG. 1 is a schematic diagram of an optical system installed on a portable electronic device according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view of an optical system according to the embodiment of FIG. 1 of the present invention.

FIG. 3 is an exploded view of a reflection module according to an embodiment of the present invention.

FIG. 4 is a partial structural schematic diagram of a reflective module according to an embodiment of the present invention.

FIG. 5 is a three-dimensional schematic diagram of a reflective module from another viewing angle according to an embodiment of the present invention.

FIG. 6 is a partial structural diagram of a reflective module at another viewing angle according to an embodiment of the present invention.

7A to 7C are schematic diagrams of an optical system in different states according to an embodiment of the present invention.

FIG. 8 is a schematic diagram of a reflection unit according to another embodiment of the present invention.

9A to 9C are schematic diagrams of an optical system in different states according to another embodiment of the present invention.

FIG. 10 is a schematic side view of a reflection unit according to another embodiment of the present invention.

The reference signs are as follows:

50 portable electronic devices

52 openings

100, 100A optical system

200 lens modules

202 optical lens

300 Reflection Module

302, 302' reflective unit

3021 reflective surface

3022 reflective surface

3023 reflective surface

302A Reflective Unit

302B reflective unit

304 outer frame

3041 Protrusion

306 The first elastic component

3061 central part

3062 side part

3063 side part

308 Optical Assembly Carrier

310 bearing seat

3101 First shell

3103 second housing

3105 Central Groove

3107 side wall

312 base

3121 Extension

314 Second elastic component

400 photosensitive components

402 photosensitive surface

Ax Second axis

Ay third axis

C center position

C1 center position

C2 side position

CL11 first drive coil

CL12 First drive coil

CL13 first drive coil

CL2 Second drive coil

CL31 third driving coil

CL32 third driving coil

CS arc structure

DA1 first drive assembly

DA2 Second drive assembly

DA3 third drive assembly

Fv electromagnetic driving force

Fy electromagnetic driving force

Fz electromagnetic driving force

IL incident light

IL1 incident light

IL2 incident light

MG11 first magnetic assembly

MG12 first magnetic assembly

MG13 first magnetic assembly

MG2 second magnetic assembly

MG31 third magnetic assembly

MG32 third magnetic assembly

P1 first position

P2 second position

P3 third position

PS plane

RL reflected light

RL1 reflected light

RL2 reflected light

Detailed ways

In order to make the purposes, features, and advantages of the embodiments of the present disclosure more comprehensible, the following specific embodiments are described in detail with accompanying drawings. Wherein, the configuration of each component in the embodiment is for illustration, and is not intended to limit the embodiment of the present disclosure. Moreover, some of the reference numerals in the embodiments are repeated, for the sake of simplicity of description, and do not imply the correlation between different embodiments. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only directions referring to the attached drawings. Therefore, the directional terms are used to illustrate and not to limit the embodiments of the present disclosure.

In addition, relative terms such as "lower" or "bottom" and "higher" or "top" may be used in the embodiments to describe the relative relationship of one component of an icon to another component. It will be appreciated that if the illustrated device is turned over so that it is upside down, components described as being on the "lower" side would become components on the "higher" side.

Here, the terms "about" and "approximately" usually mean within 20%, preferably within 10%, and more preferably within 5% of a given value or range. The quantities given here are approximate quantities, which means that the meanings of "about" and "approximately" can still be implied without specific instructions.

Please refer to FIG. 1 , which is a schematic diagram of an optical system 100 installed on a portable electronic device 50 according to an embodiment of the present invention. The portable electronic device 50 can be any portable device or handheld device, such as a digital personal assistant (PDA), a smart phone (smartphone), a tablet computer (tablet), a mobile phone, a mobile Internet device (Mobile Internet Device, MID), Notebook computer, car computer, digital camera, digital media player, game device or any type of mobile computing device, however, those skilled in the art should understand that the present invention is not limited thereto. In this embodiment, the optical system 100 can be a lens system with a long focal length, which can provide users with better shooting effects, wherein light can enter the optical system 100 through the opening 52 to generate one or more digital images.

Please refer to FIG. 2 . FIG. 2 is a schematic perspective view of the optical system 100 according to the embodiment of FIG. 1 of the present invention. As shown in FIG. 2 , the optical system 100 may include a lens module 200 , a reflection module 300 and a photosensitive component 400 . In addition, the optical system 100 may further include a casing (not shown in the figure), which is arranged in the portable electronic device 50 shown in FIG. inside the casing. Specifically, the lens module 200 , the reflection module 300 and the photosensitive element 400 are arranged along a first direction. For example, they are arranged along the Y-axis in FIG. 2 . Moreover, as shown in FIG. 2 , the lens module 200 has at least one optical lens (such as an optical lens 202 ), and the reflection module 300 has a reflection unit 302 (such as a reflector). Therefore, the reflective unit 302 is also arranged along the first direction (for example, along the Y-axis direction) as the optical lens 202 .

As shown in FIG. 1 and FIG. 2, an external incident light IL can pass through the opening 52 of the portable electronic device 50 along a second direction (for example, along the Z-axis direction) and enter the casing and enter the reflection. Unit 302. Wherein, a third direction (such as the X-axis direction) is perpendicular to the first direction (Y-axis direction) and the second direction (Z-axis direction). In this embodiment, the reflective unit 302 may have a reflective surface 3021 configured to receive the incident light IL incident along the second direction (Z-axis direction), and reflect a reflected light RL, and then the reflected light RL moves along the first direction (Y-axis direction) enters the lens module 200 . In this embodiment, the lens module 200 in FIG. 2 only represents an optical lens 202 , but it is not limited to this embodiment. For example, the lens module 200 may include a plurality of optical lenses therein. When the reflected light RL enters the lens module 200, the optical lens 202 of the lens module 200 is configured to guide the reflected light RL to the photosensitive component 400, and the photosensitive component 400 will generate an electronic signal after receiving the reflected light RL to be transmitted to the A processor (not shown) of the portable electronic device 50 can further generate a digital image.

In addition, it should be noted that, as shown in FIG. 2 , the photosensitive element 400 has a photosensitive surface 402 , and the aforementioned first direction is substantially perpendicular to the photosensitive surface 402 . That is to say, the reflected light RL is also substantially perpendicular to the photosensitive surface 402 .

Please refer to FIG. 3 , which is an exploded view of a reflection module 300 according to an embodiment of the present invention. As shown in the figure, the reflection module 300 includes a reflection unit 302, an outer frame 304, a first elastic component 306, an optical component carrier 308, a bearing seat 310, a base 312, a plurality of second elastic components 314, A first driving component DA1, a second driving component DA2 and a third driving component DA3. Wherein, when the portable electronic device 50 is shaken, the first driving unit DA1, the second driving unit DA2 and a third driving unit DA3 can be configured to drive the reflection unit 302 to move or rotate, so that the reflected light in FIG. The RL can be stably reflected to the lens module 200 and the photosensitive component 400 to achieve the purpose of optical image stabilization. Furthermore, in this embodiment, the first elastic component 306 can be a leaf spring, which has a central portion 3061 , a side portion 3062 and a side portion 3063 . The central part 3061 is connected to the side part 3062 and the side part 3063 , and the central part 3061 can rotate relative to the side part 3062 and the side part 3063 .

In this embodiment, the bearing seat 310 includes a first shell 3101 and a second shell 3103 , the first shell 3101 is fixedly connected to the second shell 3103 , such as using adhesive material to fix each other. Furthermore, the third driving assembly DA3 may include two third driving coils CL31 and CL32 , which are disposed between the first casing 3101 and the second casing 3103 . In addition, as shown in FIG. 3, the first housing 3101 has a central groove 3105 and two side walls 3107, the central groove 3105 is formed between the two side walls 3107, and the central groove 3105 is configured to The optical assembly carrier 308 and the second driving assembly DA2 are accommodated.

Please refer to FIG. 3 and FIG. 4 . FIG. 4 is a partial structural diagram of a reflection module 300 according to an embodiment of the present invention. In this embodiment, the reflecting unit 302 is an optical mirror, fixedly connected to the optical component carrier 308 through the central part 3061 of the first elastic component 306, and the side part 3062 of the first elastic component 306 is connected to the side The side portions 3063 are respectively fixedly connected to the two side walls 3107 of the first casing 3101 . Therefore, the reflection unit 302 and the optical component carrier 308 are suspended in the central groove 3105 of the first casing 3101 through the first elastic component 306 . As shown in FIG. 3 , the third driving assembly DA3 further includes a pair of third magnetic assemblies MG31 and a pair of third magnetic assemblies MG32 . Two pairs of third magnetic components MG31 and MG32 are respectively fixedly disposed on opposite sides of the optical component carrier 308 . In addition, the second driving component DA2 may include a second driving coil CL2 and a second magnetic component MG2, the second driving coil CL2 is disposed on an inner wall of the central groove 3105, and the second magnetic component MG2 is disposed on the optical The location on the component carrier 308 corresponds to the second driving coil CL2.

Next, in this embodiment, the outer frame 304 is sleeved on the first housing 3101 of the bearing base 310 , and the outer frame 304 may have four protrusions 3041 protruding along the X-axis direction. Therefore, the base 312 can be connected to the four protrusions 3041 of the outer frame 304 through the four second elastic components 314 (as shown in FIG. 2 ). Moreover, as shown in FIG. 3, the first drive assembly DA1 may include a first magnetic assembly MG11, a first magnetic assembly MG12, a first magnetic assembly MG13, a first drive coil CL11, a first drive coil CL12 and a first driving coil CL13. In this embodiment, as shown in FIG. 3 , the first magnetic component MG11 is fixedly arranged on the first housing 3101 of the bearing seat 310 and faces the base 312, and corresponds to the first drive of the first magnetic component MG11. The coil CL11 is disposed on the base 312 . Moreover, the first magnetic assembly MG12 and the first magnetic assembly MG13 are fixedly disposed on both sides of the second housing 3103 , and the first driving coil CL12 and the first driving coil CL13 are respectively disposed on two sides of the base 312 . The extension part 3121 faces the corresponding first magnetic component MG12 and the first magnetic component MG13 .

As shown in FIG. 2 and FIG. 3 , based on the above-mentioned structural configuration, the first driving assembly DA1 can control the carrying seat 310 to drive the reflection unit 302 to move along a first axis to adjust the intensity of the reflected light RL on the photosensitive assembly 400. focus position. For example, the first driving assembly DA1 can control the bearing base 310 to move along the first axis, such as to move along the Y-axis or along the Z-axis. However, it should be noted that the first axis is not parallel to the aforementioned third direction (X-axis direction). In addition, it should be noted that the positions of the magnetic components and the driving coils in the first driving component DA1 , the second driving component DA2 and the third driving component DA3 are not limited to this embodiment. For example, the positions of the magnetic assembly and the drive coil can be interchanged. Furthermore, the manner in which the first driving component DA1 drives the bearing seat 310 to move is not limited to this embodiment, for example, the first driving component DA1 can also be realized by means of a stepping motor or piezoelectric driving.

Please refer to FIG. 5 . FIG. 5 is a perspective view of a reflection module 300 according to an embodiment of the present invention from another viewing angle. In order to clearly show the first driving assembly DA1, the base 312 is indicated by a dotted line. In this embodiment, the magnetic pole direction of the first magnetic component MG11 is along the Y-axis direction, for example, the direction of the N pole of the first magnetic component MG11 is towards the Y-axis direction, and the direction of the S pole is towards -Y axis direction. When the first driving coil CL11 is energized, an electromagnetic driving force Fy will be generated between the first driving coil CL11 and the first magnetic component MG11 according to Leng's law, so as to drive the reflection unit 302 along with the outer frame 304 relative to the base 312. Move in the Y axis direction. Furthermore, in this embodiment, the second elastic component 314 has a helical structure, and when the outer frame 304 moves along the Y-axis direction relative to the base 312 , the second elastic component 314 will be stretched or compressed.

In this embodiment, the magnetic pole directions of the first magnetic component MG12 and the first magnetic component MG13 are along the Z-axis direction. When the first driving coil CL12 and the first driving coil CL13 are energized, they will generate two electromagnetic driving forces Fz with the first magnetic assembly MG12 and the first magnetic assembly MG13 respectively, and drive the carrying base 310 to drive the reflective unit 302 relative to the base 312 along the Move in the direction of the Z axis. Therefore, according to the configuration of the first driving assembly DA1 , the reflecting unit 302 can be driven to move relative to the base 312 along the Y-axis direction or the Z-axis direction.

Please refer to FIG. 4 and FIG. 6 . FIG. 6 is a partial structural diagram of a reflection module 300 according to an embodiment of the present invention at another viewing angle. As shown in Figure 6, when the second drive coil CL2 in the second drive assembly DA2 is energized, the second drive coil CL2 and the second magnetic assembly MG2 will generate an electromagnetic driving force Fz along the Z-axis direction, thereby driving the optical The component carrier 308 , the reflection unit 302 and the central portion 3061 of the first elastic component 306 rotate around a second axis Ax relative to the side portion 3062 and the side portion 3063 . That is, the electromagnetic driving force Fz can make the reflection unit 302 rotate around the second axis Ax relative to the supporting base 310 ( FIG. 4 ).

Similarly, as shown in FIG. 6, when the third driving coils CL31 and CL32 in the third driving assembly DA3 are energized (where the currents received by the third driving coils CL31 and CL32 have the same magnitude but opposite phases), the third driving coils CL31 and CL32 will respectively generate electromagnetic driving forces Fv in two opposite directions with the third magnetic component MG31 and the third magnetic component MG32, so as to drive the optical component carrier 308, the reflection unit 302 and the central part 3061 of the first elastic component 306 to rotate around A third axis Ay rotates relative to the side portion 3062 and the side portion 3063 . That is, the electromagnetic driving force Fv can make the reflection unit 302 rotate around the third axis Ay relative to the supporting base 310 ( FIG. 4 ). It should be noted that the direction of the electromagnetic driving force Fv is perpendicular to the reflecting surface 3021 of the reflecting unit 302 , that is, the direction of the electromagnetic driving force Fv is parallel to the normal vector of the reflecting surface 3021 . Furthermore, the second axis Ax and the third axis Ay are not parallel to the direction of the electromagnetic driving force Fv. For example, the second axis Ax and the third axis Ay are substantially perpendicular to the direction of the electromagnetic driving force Fv.

Please refer to FIG. 7A to FIG. 7C . FIG. 7A to FIG. 7C are schematic diagrams of the optical system 100 in different states according to an embodiment of the present invention. In FIG. 7A , the optical system 100 is parallel to a reference plane (for example, parallel to a horizontal plane), and the reflected light RL is reflected to a center position C (focus position) of the photosensitive element 400 . Next, as shown in FIG. 7B , FIG. 7B shows a schematic view of the optical system 100 after rotating clockwise by an angle relative to the horizontal plane. As shown in FIG. 7B , since the optical system 100 is rotated by an angle (for example, 5 degrees) relative to the horizontal plane, the position where the reflected light RL is reflected on the photosensitive element 400 will be shifted. As shown in FIG. 7B , the reflected light RL is reflected to a first position P1 of the photosensitive element 400 .

In order to compensate the offset distance of the reflected light RL on the photosensitive element 400 (that is, the distance between the center position C and the first position P1), the first driving component DA1 ( FIG. 5 ) can drive the reflective unit 302 along the direction shown in FIG. 7B . The direction of the arrow shown (-Y axis direction) moves, so the reflective unit 302 can move from the position shown in FIG. 7B to the position shown in FIG. 7C. Then, as shown in FIG. 7C , the position where the reflected light RL is reflected to the photosensitive element 400 will return from the first position P1 to the central position C, so that the purpose of optical anti-shake can be achieved.

It should be noted that in this embodiment, the reflective surface 3021 of the reflective unit 302 is a plane, and the compensation can be achieved by moving the reflective unit 302 along the -Y axis without rotating the reflective unit 302 . Furthermore, through the structural configuration of this embodiment, the reflected light RL reflected on the photosensitive element 400 can still have good quality, so that the photosensitive element 400 can produce a clear image.

In this embodiment, when the optical system 100 rotates clockwise relative to the horizontal plane, the first driving component DA1 can drive the reflective unit 302 to move toward the -Y axis direction, so as to compensate the offset distance of the reflected light RL on the photosensitive component 400 . Similarly, when the optical system 100 rotates counterclockwise relative to the horizontal plane, the first driving component DA1 can drive the reflective unit 302 to move toward the Y-axis direction, so as to compensate the offset distance of the reflected light RL on the photosensitive component 400 . In this embodiment, the distance that the first driving component DA1 drives the reflective unit 302 to perform compensation may correspond to the angle between the optical system 100 and the horizontal plane. For example, when the optical system 100 rotates 1 degree clockwise relative to the horizontal plane, the first driving component DA1 drives the reflective unit 302 to move 125 μm in the direction of the -Y axis to achieve the purpose of compensating for the offset distance.

Please refer to FIG. 8 , which is a schematic diagram of a reflection unit 302 ′ according to another embodiment of the present invention. In this embodiment, the reflective unit 302' has a reflective surface 3022, and the reflective surface 3022 has a circular arc structure. As shown in FIG. 8, compared with the reflective unit 302 of the previous embodiment, the structure of the reflective surface 3022 of this embodiment can increase the angle between the reflected light RL and the incident light IL, for example, when two parallel light beams are incident on the reflective surface After 3022, reflected light with different reflection angles will be generated, so the compensation effect can be further improved.

Please refer to FIG. 9A to FIG. 9C . FIG. 9A to FIG. 9C are schematic diagrams of an optical system 100A in different states according to another embodiment of the present invention. In this embodiment, the optical system 100A includes a reflective unit 302A, a reflective surface 3023 of the reflective unit 302A has an arc structure, and the center of the arc structure corresponds to the center of an incident light IL1. In addition, in this embodiment, the arc structure of the reflective surface 3023 is a convex structure, which is curved toward the direction away from the lens module 200 , but it is not limited thereto. For example, in other embodiments, the arc structure of the reflective surface 3023 can also be a concave structure, which is curved toward the direction of the lens module 200 . Furthermore, in this embodiment, the arc structure may have a radius, and the radius is about 100 to 1000 mm.

In FIG. 9A , the optical system 100A is not shaken and is parallel to the horizontal plane, and an incident light IL1 and an incident light IL2 are incident on the reflection unit 302A along the Z-axis direction. Then, the reflected light RL1 and the reflected light RL2 are respectively reflected to a center position C1 and a side position C2 of the photosensitive element 400 . Next, as shown in FIG. 9B , FIG. 9B shows a schematic diagram of the optical system 100A after being rotated counterclockwise by an angle relative to the horizontal plane. As shown in FIG. 9B , since the optical system 100A is rotated by an angle (for example, 5 degrees) relative to the horizontal plane, the positions of the reflected light RL1 and the reflected light RL2 reflected on the photosensitive element 400 will be shifted. As shown in FIG. 9B , the reflected light RL1 and the reflected light RL2 are respectively reflected to a second position P2 and a third position P3 of the photosensitive element 400 .

In order to compensate the offset distance between the reflected light RL1 and the reflected light RL2 on the photosensitive element 400, the first driving assembly DA1 (FIG. 5) can drive the reflecting unit 302A to move along the arrow direction (-Y axis direction) shown in the figure, Therefore, the reflecting unit 302A can be moved from the position shown in FIG. 9B to the position shown in FIG. 9C. Thus, as shown in FIG. 9C, the position where the reflected light RL1 is reflected on the photosensitive element 400 will return to the central position C1 from the second position P2, and the position where the reflected light RL2 is reflected on the photosensitive element 400 will return from the third position P3. The side position is C2, so the purpose of optical anti-shake can be achieved.

Similarly, in this embodiment, when the optical system 100A rotates clockwise relative to the horizontal plane, the first driving component DA1 can drive the reflective unit 302A to move in the Y-axis direction, so as to compensate the reflected light RL1 and reflected light RL2 in the photosensitive component. 400 offset distance.

Please refer to FIG. 10 , which is a schematic side view of a reflection unit 302B according to another embodiment of the present invention. As shown in FIG. 10 , a reflective surface 3025 of the reflective unit 302B has a plane PS and an arc structure CS, and the arc structure CS surrounds the plane PS. In this embodiment, the arc structure CS has a radius, and the radius is about 100 to 1000 mm. The reflection unit 302B of this embodiment is similar to the reflection unit 302A.

In the embodiment of FIG. 9A and FIG. 10 , based on the design of the reflective surface having a circular arc structure, the focus position of the light reflected from the periphery of the reflective surface onto the photosensitive element 400 can be further made more precise. For example, the compensation effect of the reflected light RL2 in FIG. 9C can be made more accurate.

Furthermore, in other embodiments of the present disclosure, in order to further improve the compensation result, the above-mentioned multiple driving components can further control the reflection unit to move and rotate simultaneously. For example, in some embodiments, the first driving assembly DA1 and the second driving assembly DA2 can control the reflection unit to move along the Y-axis direction and rotate around the second axis Ax, so as to achieve the purpose of two-axis compensation. In some embodiments, the first driving component DA1 can control the reflection unit to move along the Y-axis direction and the Z-axis direction simultaneously, so as to achieve the purpose of two-axis compensation.

In addition, in some embodiments, the first driving assembly DA1 and the second driving assembly DA2 can control the reflection unit to move along the Y-axis direction, move along the Z-axis direction, and rotate around the second axis Ax, and then To achieve the purpose of three-axis compensation. Moreover, in some embodiments, the first driving assembly DA1, the second driving assembly DA2, and the third driving assembly DA3 can control the reflection unit to move along the Y-axis direction, along the Z-axis direction, and move around the second axis. Ax rotates and rotates around the third axis Ay, so as to achieve the purpose of four-axis compensation.

To sum up, the present invention provides an optical system with a long focal length, which is installed in an electronic device for capturing images. The optical system may have a lens module 200 , a reflection module 300 , a photosensitive component 400 and a plurality of driving components. Wherein, the reflection module 300 includes a reflection unit, which can reflect external light to the lens module 200, and then transmit it to the photosensitive element 400 to generate a digital image. It is worth noting that when the optical system is shaken, multiple driving components can control the reflective unit to move along a first axis, rotate around a second axis and/or rotate around a third axis, so as to adjust the reflected light in the photosensitive The focusing position on the component 400 is used to achieve the purpose of optical anti-shake and improve the image quality of the photosensitive component 400 .

In some embodiments, a reflective surface of the reflective unit is a plane, and the plurality of driving components can only control the reflective unit to move along the first axis, so as to achieve the purpose of compensating the focus position. In addition, in some embodiments, the reflective surface of the reflective unit may further include an arc structure. Based on the design of the arc structure, the focus position of the light reflected on the photosensitive component 400 around the reflective surface can be further made more precise.

Although the embodiments of the present disclosure and their advantages have been disclosed above, it should be understood that those skilled in the art may make changes, substitutions and modifications without departing from the spirit and scope of the embodiments of the present disclosure. In addition, the protection scope of the embodiments of the present disclosure is not limited to the process, machine, manufacture, material composition, device, method and steps in the specific embodiments described in the specification. Those skilled in the art can understand the existing or Processes, machines, manufactures, compositions of matter, devices, methods and steps developed in the future can be used in accordance with the present disclosure as long as they can perform substantially the same functions or obtain substantially the same results in the embodiments described herein. Therefore, the protection scope of the embodiments of the present disclosure includes the above-mentioned process, machine, manufacture, composition of matter, device, method and steps. In addition, each claim constitutes an individual embodiment, and the protection scope of the embodiments of the present disclosure also includes combinations of the individual claims and the embodiments.

Claims (10)

1. An optical system comprising: a photosensitive component; at least one optical lens; A reflective unit has a reflective surface configured to receive an incident light and reflect a reflected light, and the reflected light enters the photosensitive element through the optical lens; and A first driving component is configured to control the reflection unit to move along a first axis, so as to adjust a focus position of the reflected light on the photosensitive component. 2. The optical system according to claim 1, wherein the reflective unit and the optical lens are arranged along a first direction, the incident light enters the reflective unit along a second direction, and a third direction is perpendicular to In the first direction and the second direction, wherein the first axis is not parallel to the third direction. 3. The optical system of claim 2, wherein the first direction is substantially perpendicular to a photosensitive surface of the photosensitive element. 4. The optical system as claimed in claim 1, wherein the reflective surface has an arc structure. 5. The optical system as claimed in claim 4, wherein the center of the arc structure corresponds to the center of the incident light. 6. The optical system as claimed in claim 4, wherein the reflective surface has a radius approximately between 100 and 1000 mm. 7. The optical system as claimed in claim 4, wherein the reflective surface further has a plane, and the arc structure surrounds the plane. 8. The optical system as claimed in claim 4, wherein the arc structure is a convex structure or a concave structure. 9. The optical system as claimed in claim 1, wherein the optical system further comprises a second driving component configured to drive the reflection unit to rotate around a second axis. 10. The optical system as claimed in claim 1, wherein the optical system further comprises a third driving component configured to drive the reflection unit to rotate around a third axis.