Optical system
By designing an optical system that includes aperture modules and optical modules, the challenges of existing optical systems in miniaturization and stability and reliability are solved, and more efficient autofocus and optical anti-hand shock functions are achieved.
Patent Information
- Application Number
- CN202411738621.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-11-30
- Filing Date
- 2024-11-29
- Publication Date
- 2025-05-30
AI Technical Summary
Existing optical systems have challenges in miniaturization and stability and reliability, making it difficult to further improve their performance.
An optical system including an aperture module and an optical module is designed. The aperture module is equipped with an aperture mechanism and an optical element. The optical module is connected to the aperture module in the vertical direction, and the light passes through the aperture mechanism and optical element in the vertical direction and then enters the optical module.
Through this design, the optical system is miniaturized, while improving its stability and reliability, especially in terms of automatic focus and optical anti-hand shock functions.
Smart Images
Figure CN120065605A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an optical system. More specifically, the present invention particularly relates to an optical system having an aperture mechanism. Background Art
[0002] With the development of technology, many current electronic devices (such as smart phones or digital cameras) have functions of taking pictures or videos. The use of these electronic devices is becoming more and more common, and they are developing towards convenient and thin-and-light designs to provide users with more choices.
[0003] Some electronic devices with functions of taking pictures or videos usually have a lens driving assembly inside to drive an optical element to move, so as to achieve the functions of auto focusing (AF) and optical image stabilization (OIS). Light can pass through the aforementioned optical element and form an image on a photosensitive element.
[0004] However, how to further achieve miniaturization of the optical system and improve its stability and reliability has become an important challenge for researchers in this technical field. Summary of the Invention
[0005] An object of the present invention is to provide an optical system to solve at least one of the above problems.
[0006] In view of the aforementioned known problems, an embodiment of the present invention provides an optical system, including an aperture module and an optical module. The aforementioned aperture module has a housing, an aperture mechanism, and an optical element, wherein the aforementioned aperture mechanism and the aforementioned optical element are disposed inside the aforementioned housing. The aforementioned optical module is connected to the aforementioned aperture module along a vertical direction, and a light ray enters the aforementioned optical module after passing through the aperture mechanism and the aforementioned optical element along the aforementioned vertical direction.
[0007] In an embodiment, the aforementioned optical module has a prism, a fixed part, and a movable part. The aforementioned movable part is disposed inside the aforementioned fixed part and can move relative to the aforementioned fixed part. The aforementioned prism is disposed on the aforementioned movable part to reflect the aforementioned light ray. Description of the Drawings
[0008] Figure 1 A perspective view showing an optical system according to an embodiment of the present invention.
[0009] Figure 2 Shows Figure 1 Another perspective view of the optical system in
[0010] Figure 3 Shows Figure 1 and Figure 2Exploded view of the optical system in
[0011] Figure 4 Indicates the exploded view of the optical system after removing the housing.
[0012] Figure 5 Indicates the exploded view of the optical module in the optical system.
[0013] Figure 6 Indicates Figure 1 and Figure 2 Cross-sectional view of the optical system in
[0014] Figure 7 Indicates Figure 6 Partial enlarged view of the optical system in
[0015] Figure 8 Indicates Figure 1 and Figure 2 Side view of the optical system in
[0016] Figure 9 Indicates the partially sectional enlarged view of the optical system of another embodiment of the present invention.
[0017] Figure 10 Indicates the partially sectional enlarged view of the optical system of another embodiment of the present invention.
[0018] The reference numerals are as follows:
[0019] 100: Optical system
[0020] 200: Optical system
[0021] 300: Optical system
[0022] 10: Image sensing module
[0023] 11: Housing
[0024] 20: Lens module
[0025] 21: Base
[0026] 22: Carrier
[0027] 23: Substrate
[0028] 24: Guide rod
[0029] 30: Optical module
[0030] 31: Base
[0031] 32: Movable part
[0032] 33: Reed
[0033] 34: Pivoting member
[0034] 40: Aperture module
[0035] 41: Aperture mechanism
[0036] 42: Optical element
[0037] 421: Top
[0038] 422: Bottom
[0039] 423: Groove
[0040] 43: Lens
[0041] 44: Carrier
[0042] 45: Protection cover
[0043] B1: Circuit board
[0044] B2: Circuit board
[0045] B3: Circuit board
[0046] BL: Plane
[0047] C1: Coil
[0048] C2: Coil
[0049] C3: Coil
[0050] D1: Vertical direction
[0051] D2: Horizontal direction
[0052] D3: Vertical direction
[0053] H1: Housing
[0054] H2: Housing
[0055] H3: Housing
[0056] H4: Housing
[0057] M1: Magnetic element
[0058] M2: Magnetic element
[0059] M3: Magnetic element
[0060] N: Pivot
[0061] P: Prism
[0062] Q: Lens
[0063] R: Reflective element
[0064] S: Image sensor
[0065] T1: Thickness
[0066] T2: Thickness
[0067] T3 Thickness
[0068] T4: Thickness
[0069] W: Elastic element Detailed implementation manners
[0070] The following describes the optical system of the embodiments of the present invention. However, it can be easily understood that the embodiments of the present invention provide many suitable inventive concepts that can be implemented in a wide variety of specific backgrounds. The specific embodiments disclosed are only used to illustrate the use of the present invention in a specific manner and are not intended to limit the scope of the present invention.
[0071] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this disclosure belongs. It can be understood that these terms, such as those defined in a commonly used dictionary, should be interpreted as having a meaning consistent with the relevant technology and the background or context of the present disclosure, and should not be interpreted in an idealized or overly formal manner, unless specifically defined herein.
[0072] Regarding the foregoing and other technical contents, features and effects of the present invention, they will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used in the embodiments are used for illustration and not for limiting the present invention.
[0073] First, please refer to Figures 1 to 2 , in which Figure 1 shows a perspective view of an optical system 100 according to an embodiment of the present invention, Figure 2 shows Figure 1 another perspective view of the optical system 100 in
[0074] As shown in Figure 1 , Figure 2 The optical system 100 of this embodiment includes one or more voice coil motors (VCMs), and can be installed inside a mobile phone or other portable electronic device to drive one or more optical elements (such as optical lenses) to move, so as to achieve functions such as auto focusing (AF) and / or optical image stabilization (OIS).
[0075] The aforementioned optical system 100 mainly includes an interconnected image sensing module 10, a lens module 20, an optical module 30, and a diaphragm module 40. Among them, the aforementioned lens module 20 is connected to the image sensing module 10 and the optical module 30 along the X-axis direction, and the aforementioned diaphragm module 40 is connected to the optical module 30 along the Z-axis direction, so that the optical system 100 presents an L-shaped structure.
[0076] Specifically, optical elements (such as lenses or prisms) are respectively provided inside the outer shells H1, H2, and H3 of the aforementioned image sensing module 10, lens module 20, and optical module 30. In addition, a diaphragm mechanism 41 is provided inside the outer shell H4 of the diaphragm module 40. Among them, light can enter the inside of the diaphragm module 40 along the -Z axis direction, and the light will be reflected by the prism inside the optical module 30 and then pass through the lens module 20 along the X axis direction. Then, the prism inside the image sensing module 10 will reflect the light to the image sensor S (as Figure 2 shown) located on the bottom side of the optical module 30, so as to generate a digital image.
[0077] On the other hand, it can be seen from Figure 1 、 Figure 2 that a circuit board B1 is provided on the bottom side of the image sensing module 10, a circuit board B2 is provided on the bottom side of the lens module 20, and a circuit board B3 is provided on the bottom side of the optical module 30. Among them, the aforementioned image sensor S is disposed on the circuit board B1.
[0078] Next, please refer to Figure 3 、 Figure 4 、 Figure 5 together, where Figure 3 represents Figure 1 、 Figure 2 the exploded view of the optical system 100 in Figure 4 represents the exploded view of the optical system 100 after removing the outer shells H1 and H2, Figure 5 represents the exploded view of the optical module 30 in the optical system 100.
[0079] As Figure 3 、 Figure 4 shown, the aforementioned image sensing module 10 mainly includes an outer shell H1, a frame 11, at least one magnetic element M1, at least one coil C1, a plurality of elastic elements W (such as metal rods), a circuit board B1, a reflection element R, and an image sensor S. Among them, the outer shell H1 and the frame 11 are combined with each other to form a fixed part of the image sensing module 10, and the magnetic element M1 and the coil C1 form a driving component of the image sensing module 10 to drive the circuit board B1 and the image sensor S disposed on the circuit board B1 to move relative to the outer shell H1 and the frame 11.
[0080] It should be specifically noted that the aforementioned reflection element R is fixed within the aforementioned housing 11, and the aforementioned elastic element W is connected to the circuit board B1 and the housing 11; in addition, the aforementioned magnetic element M1 is disposed on the bottom side of the housing 11, and the aforementioned coil C1 is disposed on the circuit board B1 and electrically connected to the circuit board B1.
[0081] In this way, an external circuit can apply a current signal to the aforementioned coil C1 through the circuit board B1, and the magnetic force generated between the coil C1 and the magnetic element M1 can be utilized to drive the circuit board B1 and the image sensor S on the circuit board B1 to move relative to the housing 11 along the X-axis and / or Y-axis directions together, thereby achieving the function of optical image stabilization (OIS).
[0082] On the other hand, the aforementioned lens module 20 mainly includes a housing H2, a base 21, a carrier 22, at least one substrate 23, at least one guide rod 24, at least one magnetic element M2, at least one coil C2, a circuit board B2, and a lens Q. The housing H2 and the base 21 are combined with each other to form a fixed part of the lens module 20. The aforementioned magnetic element M2 and the coil C2 constitute a driving assembly of the lens module 20 for driving the carrier 22 to move relative to the housing H2 and the base 21.
[0083] It should be specifically noted that the aforementioned lens Q is fixed to the carrier 22, the aforementioned circuit board B2 is fixed to the bottom side of the base 21, and the aforementioned guide rod 24 is fixed inside the base 21. The aforementioned carrier 22 is movably disposed on the guide rod 24, so that the carrier 22 and the lens Q can slide relative to the base 21 along the X-axis direction.
[0084] In this embodiment, the aforementioned magnetic element M2 is fixed to the side of the carrier 22, the aforementioned substrate 23 is fixed to the inner surface of the housing H2 and electrically connected to the circuit board B2, and the aforementioned coil C2 is fixed to the substrate 23 and faces the magnetic element M2.
[0085] In this way, an external circuit can apply a current signal to the aforementioned coil C2 through the circuit board B2, and the magnetic force generated between the coil C2 and the magnetic element M2 can be utilized to drive the carrier 22 and the lens Q disposed therein to move relative to the base 21 and the housing H2 along the X-axis direction together, thereby achieving the functions of autofocus (AF) and / or optical image stabilization (OIS).
[0086] From Figure 5 it can be seen that the aforementioned optical module 30 has a housing H3, a base 31, a movable part 32, at least one reed 33, a pivot member 34, at least one magnetic element M3, at least one coil C3, a circuit board B3, and a prism P. The aforementioned magnetic element M3 and the coil C3 constitute a driving assembly inside the optical module 30.
[0087] Specifically, the aforementioned housing H3 and the base 31 are combined with each other and can jointly form a fixing part of the optical module 30. The aforementioned movable part 32 is movably arranged in the base 31, and the aforementioned prism P is arranged on the movable part 32. The pivot joint 34 is, for example, a ball joint, which is used to pivotally connect the movable part 32 and the base 31, and the aforementioned reed 33 is movably connected to the movable part 32 and the base 31.
[0088] It should be understood that the aforementioned magnetic element M3 is arranged on the movable part 32, and the aforementioned coil C3 is arranged on the base 31 and electrically connected to the circuit board B3. In this way, an external circuit can apply a current signal to the aforementioned coil C3 through the circuit board B3, and use the magnetic force generated between the coil C3 and the magnetic element M3 to drive the movable part 32 and the prism P arranged therein to rotate relative to the base 31 and the housing H3 together, so as to achieve the function of optical image stabilization (OIS).
[0089] In addition, as Figure 3 、 Figure 4 shown, the aforementioned aperture module 40 mainly includes a housing H4, an aperture mechanism 41, an optical element 42 and a lens 43. The housing H4 is fixed to the top side of the housing H3 of the optical module 30, and the aforementioned aperture mechanism 41, optical element 42 and lens 43 are all arranged inside the housing H4. For example, the aforementioned optical element 42 can be an optical lens, and the aforementioned lens 43 can be a flat lens or a lens filter.
[0090] In this embodiment, the aforementioned lens 43 is located between the aperture mechanism 41 and the optical element 42 in the Z-axis direction; however, the aforementioned lens 43 can also be omitted, and only the aperture mechanism 41 and the optical element 42 are arranged in the aperture module 40, which is not limited to what is disclosed in the embodiments of the present invention.
[0091] Please also refer to FIGS. Figure 6 、 Figure 7 , in which Figure 6 represents Figure 1 、 Figure 2 a cross-sectional view of the optical system 100 in Figure 7 represents Figure 6 a partial enlarged view of the optical system 100 in
[0092] As Figure 6 、 Figure 7 As shown, the aperture mechanism 41 and the lens 43 of the present embodiment are fixed on a carrier 44 inside the housing H4, and the carrier 44 is pivotally connected to the housing H4 through a pivot member N (such as a ball joint). When assembled, the optical element 42 can be adhesively fixed to the movable part 32 of the optical module 30 or the top surface of the prism P, and there is a distance between the housing H4, the aperture mechanism 41, the lens 43, and the carrier 44 and the optical element 42.
[0093] In the present embodiment, the aforementioned optical element 42 and the lens 43 are located between the aperture mechanism 41 and the prism P, and the aforementioned lens 43 is located between the optical element 42 and the aperture mechanism 41.
[0094] In addition, the aforementioned carrier 44 can rotate relative to the housing H4 through the pivot member N. However, the aforementioned carrier 44 can also be fixed inside the housing H4, which is not limited to what is disclosed in the embodiments of the present invention.
[0095] It should be particularly noted that external light can sequentially pass through the aperture mechanism 41, the lens 43, and the optical element 42 inside the aperture module 40 along the -Z axis direction and reach the prism P inside the optical module 30 (as shown by the vertical direction D1 in Figure 6 ). Then, the light can be reflected by the prism P and pass through the lens Q inside the lens module 20 along the X axis direction (as shown by the horizontal direction D2 in Figure 6 ). Then, the light can be reflected by the reflection element R (such as a prism) inside the image sensing module 10 and reach the image sensor S located at the bottom side of the image sensing module 10 (as shown by the vertical direction D3 in Figure 6 ), thereby generating a digital image, where the aforementioned horizontal direction D2 is perpendicular to the aforementioned vertical directions D1 and D3.
[0096] From Figure 7 it can be seen that the optical element 42 of the present embodiment protrudes downward from the aperture module 40 and extends into the housing H3 of the optical module 30. That is, when observing along the X axis direction or the Y axis direction, the optical element 42 at least partially overlaps with the aperture module 40, and the optical element 42 at least partially overlaps with the optical module 30. The aforementioned optical element 42 has a top 421 and a bottom 422. The aforementioned bottom 422 faces the prism P and can be adhesively fixed to the movable part 32 of the optical module 30 or the top surface of the prism P. In this way, the optical anti-shake (OIS) performance of the optical system 100 can be greatly improved.
[0097] In the present embodiment, the width of the aforementioned top 421 is smaller than the width of the aforementioned bottom 422. In addition, a groove 423 adjacent to the top 421 is formed on the optical element 42. In this way, when the optical element 42 rotates with the prism P, the formation of the aforementioned groove 423 can prevent the optical element 42 from colliding with the carrier 44 or the housing H4.
[0098] Next, please refer to Figure 8 , in which Figure 8 represents Figure 1 , Figure 2 a side view of the optical system 100 in
[0099] As shown in Figure 1 , Figure 8 , conductive terminals are provided on the top surfaces of the circuit boards B2 and B3 located at the bottom sides of the lens module 20 and the optical module 30. Among them, the top surfaces of the aforementioned circuit boards B2 and B3 are located on the same plane BL, and the aforementioned plane BL is perpendicular to the Z-axis. The height of the image sensor S in the Z-axis direction is slightly lower than the aforementioned plane BL.
[0100] Specifically, the thickness T1 of the aforementioned image sensing module 10 in the Z-axis direction is greater than the thickness T2 of the lens module 20 in the Z-axis direction. The thickness T2 of the aforementioned lens module 20 in the Z-axis direction is greater than the thickness T3 of the optical module 30 in the Z-axis direction. And the thickness T3 of the aforementioned optical module 30 in the Z-axis direction is greater than the thickness T4 of the aperture module 40 in the Z-axis direction.
[0101] In addition, as can be seen from Figure 8 , the bottom surface of the housing H4 of the aperture module 40 is fixed to the top surface of the housing H3 of the optical module 30. The lens module 20 is separated from the aperture module 40 by a distance. Among them, the top surface of the optical module 30 is higher than the top surface of the lens module 20 in the Z-axis direction, and the aperture module 40 is higher than the top surfaces of the image sensing module 10, the lens module 20, and the optical module 30 in the Z-axis direction, so that the optical system 100 presents an L-shaped structure.
[0102] Please refer to Figure 9 again, in which Figure 9 represents a partially enlarged cross-sectional view of the optical system 200 according to another embodiment of the present invention.
[0103] Figure 9 The main difference between the embodiment of Figure 7 and the embodiment of Figure 9 is that:
[0104] Next, please refer toFigure 10 , wherein Figure 10 shows a partially cut-away enlarged view of the optical system 300 according to another embodiment of the present invention.
[0105] Figure 10 The embodiment of Figure 7 and the main difference between the embodiment of Figure 10 is that: in
[0106] the optical element 42 abuts against a protective cover 45 of the aperture module 40, wherein the aforementioned protective cover 45 has a light-transmitting material and is fixed to the top side of the housing H4 of the aperture module 40. Specifically, the aforementioned aperture mechanism 41 and the lens 43 are fixed on the carrier 44, and the optical element 42 does not extend into the optical module 30. That is to say, when observing along the X-axis direction or the Y-axis direction, the optical element 42 at least partially overlaps with the aperture module 40, and the optical element 42 does not overlap with the optical module 30, wherein the positions of the aforementioned aperture mechanism 41 and the lens 43 in the Z-axis direction are between the optical element 42 and the prism P.
[0107] Although the embodiments of the present invention and their advantages have been disclosed above, it should be understood that those skilled in the art can make changes, substitutions and modifications without departing from the spirit and scope of the present invention.
[0108] Therefore, the protection scope of the present invention includes the above-mentioned processes, machines, manufactures, compositions of matter, devices, methods and steps. In addition, each claim constitutes an individual embodiment, and the protection scope of the present invention also includes the combination of each claim and embodiment.
[0109] Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention. Those skilled in the art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to that defined by the appended claims.
Claims
1. An optical system, comprising: An aperture module comprises a housing, an aperture mechanism and an optical element, wherein the aperture mechanism and the optical element are arranged in the housing; as well as An optical module is connected to the aperture module along a vertical direction, wherein a light passes through the aperture mechanism and the optical element along the vertical direction and then enters the optical module.
2. The optical system as claimed in claim 1, wherein the optical module comprises a prism, a fixed portion and a movable portion, the movable portion is disposed in the fixed portion and can move relative to the fixed portion, and the prism is disposed on the movable portion to reflect the light.
3. The optical system of claim 2, wherein a portion of the optical element extends into the optical module. The optical system as claimed in claim 3 , wherein the optical element is fixed on the prism. The optical system as claimed in claim 3 , wherein the optical element is fixed on the movable part. 6 . The optical system as claimed in claim 3 , wherein the optical element has a top and a bottom, the bottom faces the prism, and a width of the top is smaller than a width of the bottom. 7 . The optical system as claimed in claim 6 , wherein the optical element further has a groove, and the groove is adjacent to the top.
8. The optical system as claimed in claim 3, wherein the optical element has a top and a bottom, the bottom faces the prism, and a width of the top is greater than a width of the bottom. 9 . The optical system as claimed in claim 8 , wherein the optical element further has a groove, and the groove is adjacent to the bottom. 10 . The optical system as claimed in claim 3 , wherein the optical element and the aperture mechanism are separated by a distance in the vertical direction.
11. The optical system of claim 3, wherein the optical element is located between the aperture mechanism and the prism in the vertical direction.
12. The optical system as claimed in claim 3, wherein the aperture module further comprises a lens disposed inside the housing and located between the aperture mechanism and the optical element. 13 . The optical system as claimed in claim 2 , wherein the optical module further comprises a driving component, disposed on the fixed portion and the movable portion, for generating a magnetic force to drive the movable portion to rotate relative to the fixed portion.
14. The optical system of claim 2, wherein the aperture mechanism is located between the optical element and the prism in the vertical direction.
15. An optical system as described in claim 1, wherein the optical system further comprises a lens module and an image sensing module, the lens module connects the optical module and the image sensing module along a horizontal direction, and the optical module has a prism, and the lens module has a lens, wherein the light is reflected by the prism and passes through the lens along the horizontal direction before entering the image sensing module. 16 . The optical system as claimed in claim 15 , wherein the image sensing module comprises a reflective element and an image sensor, and the reflective element reflects the light to the image sensor, thereby generating a digital image.
17. The optical system as claimed in claim 16, wherein the lens module and the optical module respectively have a circuit board, and top surfaces of a plurality of the circuit boards are located on the same plane, and the plane is perpendicular to the vertical direction.
18. The optical system of claim 17, wherein the position of the image sensor in the vertical direction is offset from the plane.
19. The optical system as claimed in claim 16, wherein the thickness of the image sensing module in the vertical direction is greater than the thickness of the lens module and the optical module in the vertical direction.
20. The optical system as claimed in claim 16, wherein a thickness of the lens module in the vertical direction is greater than a thickness of the optical module in the vertical direction.