Optical system

Abstract

An optical system is provided. The optical system includes a first optical module, a base, and a first optical unit. The first optical module is used for connecting a first optical element. The first optical module is connected with the base. The first optical unit is arranged on the base.

Description

Technical Field

[0001] The present invention relates to an optical system, in particular to a periscope optical system. Background Art

[0002] With the advancement of technology, many electronic devices (such as smart phones or digital cameras) now have the function of taking photos or recording videos. The demand for these electronic devices is increasing day by day, and they are developing in the direction of lightweight and high-performance design to provide users with more convenient and diverse choices.

[0003] The aforementioned electronic devices with camera or video recording functions often use periscope lens technology to achieve a higher magnification optical zoom effect while maintaining the thin and light appearance of the device. The periscope lens uses a prism or a reflector to refract light onto a horizontal optical path, thereby extending the focal length and achieving a high-magnification zoom effect, and preventing the lens from protruding from the device housing. This design not only allows light to pass through the optical element and form an image on the photosensitive element, but also effectively reduces the thickness of the module. As mobile devices have increasingly higher requirements for miniaturization and durability, periscope lenses have become an important technical solution in optical design to improve imaging performance and reduce volume. Summary of the invention

[0004] The embodiment of the present disclosure provides an optical system. The optical system includes a first optical module, a base and a first optical unit. The first optical module is used to connect a first optical element. The first optical module is connected to the base. The first optical unit is disposed on the base.

[0005] In some embodiments, the first optical module includes a first movable portion, a first base, and a first circuit assembly. The first movable portion is used to connect the first optical element. The first movable portion can move relative to the first base. The first circuit assembly is used to electrically connect to an external circuit, and the first circuit assembly includes a movable portion fixed end, a fixed end of the fixed portion, and a flexible portion. The movable portion fixed end can move relative to the first base. The movable portion fixed end can move relative to the fixed end of the fixed portion. The movable portion fixed end is movably connected to the fixed end of the fixed portion via the flexible portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The following will be described in detail with reference to the accompanying drawings. It should be noted that, in accordance with standard practice in the industry, various features are not drawn to scale and are only used for illustration purposes. In fact, the size of the elements may be arbitrarily enlarged or reduced to clearly show the features of the present disclosure.

[0007] Figure 1 A perspective view showing an optical system according to some embodiments of the present disclosure.

[0008] Figure 2 An exploded view of an optical system according to some embodiments of the present disclosure is shown.

[0009] Figure 3 Display along Figure 1 A cross-sectional view of the optical system taken along line AA.

[0010] Figure 4 Shows a cross-section of an optical system with arrows indicating the path of light entering the optical system.

[0011] Figure 5 A perspective view of an optical system according to some embodiments of the present disclosure is shown, wherein the housing is shown in phantom lines for illustrative purposes.

[0012] Figure 6 Display along Figure 1 A cross-sectional view of the optical system taken along line BB.

[0013] Figure 7 Display along Figure 1 A cross-sectional view of the optical system taken along line CC.

[0014] The reference numerals are described as follows:

[0015] 1000: Optical system

[0016] 1100: Shell

[0017] 1110, 1120: Opening

[0018] 1200: Base

[0019] 1210: Flat structure

[0020] 1211: First Surface

[0021] 1220: Highlight structure

[0022] 1221: Second Surface

[0023] 1222: Accommodation space

[0024] 1230: Accommodation

[0025] 1300: First optical module

[0026] 1310: First Activities Department

[0027] 1320: First base

[0028] 1330: First circuit component

[0029] 1331: Fixed end of the movable part

[0030] 1332: Fixed part fixed end

[0031] 1333: Flexible part

[0032] 1340: First drive assembly

[0033] 1400: Second optical module

[0034] 1410: Second Activity Department

[0035] 1420: Second base

[0036] 1430: Second circuit component

[0037] 1440: Second drive assembly

[0038] 1500: First optical unit

[0039] 1510: First glossy surface

[0040] 1520: Second glossy surface

[0041] 1530: The third light

[0042] 1540: The fourth light

[0043] 1600: Second optical unit

[0044] 1700: Connecting circuit components

[0045] 1710: First contact

[0046] 1720: Second contact

[0047] 1800: Structural reinforcement elements

[0048] 1900: Mask

[0049] 2000: First optical element

[0050] 3000: Second optical element

[0051] C1, C2, C3, C4: Center

[0052] X, Y, Z: Axis DETAILED DESCRIPTION

[0053] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meanings as commonly understood by one of ordinary skill in the art. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the background or context of the relevant technology and the present disclosure, and should not be interpreted in an idealized or overly formal manner unless specifically defined herein.

[0054] Furthermore, the ordinal numbers used in the specification and claims, such as the words "first", "second", etc., to modify the elements of the claims, do not themselves mean or represent any previous ordinal number of the claimed element, nor do they represent the order of one element and another element, or the order in the manufacturing method. The use of such ordinal numbers is only used to clearly distinguish one element with a certain name from another element with the same name.

[0055] In addition, in some embodiments of the present disclosure, terms such as "connection" and "interconnection" may refer to two structures being in direct contact, or two structures not being in direct contact, with another structure disposed between the two structures, unless otherwise specified. Such terms may also include situations where both structures are movable or both structures are fixed.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, a person having general knowledge in the art may combine and combine different embodiments or examples described in this specification.

[0057] Figure 1 A perspective view of an optical system 1000 is shown according to some embodiments of the present disclosure. Figure 2 An exploded view of an optical system 1000 according to some embodiments of the present disclosure is shown. The overall structure of the optical system 1000 will be described in detail below. Figure 1 as well as Figure 2 .

[0058] According to some embodiments of the present disclosure, the optical system 1000 includes a housing 1100, a base 1200, a first optical module 1300, a second optical module 1400, a first optical unit 1500, a second optical unit 1600, a connecting circuit assembly 1700, a pair of structural strengthening elements 1800, and a mask 1900 ( Figure 4 ).

[0059] According to some embodiments of the present disclosure, the housing 1100 is fixedly connected to the base 1200 to form a receiving space for receiving some components of the optical system 1000. The housing 1100 includes an opening 1110 and two openings 1120, the details of which will be described in detail later.

[0060] According to some embodiments of the present disclosure, the base 1200 includes a flat structure 1210, a protruding structure 1220, and a receiving portion 1230. The flat structure 1210 includes a first surface 1211. The protruding structure 1220 includes a second surface 1221 and a receiving space 1222. The first surface 1211 faces the first optical module 1300, and the second surface 1221 faces the second optical module 1400. The first surface 1211 and the second surface 1221 face the same direction.

[0061] According to some embodiments of the present disclosure, the first optical module 1300 is connected to the base 1200. Specifically, the first optical module 1300 is disposed on the flat structure 1210 and the receiving portion 1230. The first optical module 1300 is used to connect a first optical element 2000. The first optical element 2000 has a first optical axis, which is substantially parallel to the Z axis.

[0062] According to some embodiments of the present disclosure, the first surface 1211 of the flat structure 1210 and the second surface 1221 of the protruding structure 1220 are perpendicular to the first optical axis of the first optical element 2000. When viewed along the direction of the first optical axis (which is parallel to the Z axis), the protruding structure 1220 is trapezoidal in shape. The first optical unit 1500 is disposed on the base 1200. Specifically, the first optical unit 1500 is accommodated in the accommodation portion 1230 of the base 1200.

[0063] According to some embodiments of the present disclosure, the receiving space 1222 of the protruding structure 1220 is connected in the direction of the first optical axis (the direction of the Z axis) to the receiving portion 1230 that receives the first optical unit 1500. It should be noted that the center of the second optical element 3000, the opening 1110 of the housing 1100, and the center of the second optical unit 1600 are aligned with each other in the direction of the Z axis.

[0064] Please refer to Figure 3 , Figure 3 Display along Figure 1 The first optical module 1300 has the functions of auto focus (AF) and optical image stabilization (OIS). Figure 3 As shown, the first optical module 1300 includes a first movable portion 1310 , a first base 1320 , a first circuit component 1330 , and a first driving component 1340 .

[0065] According to some embodiments of the present disclosure, the first movable portion 1310 is used to connect the first optical element 2000. The first movable portion 1310 can move relative to the first base 1320. The first circuit component 1330 is used to electrically connect to an external circuit. The first driving component 1340 is electrically connected to the first circuit component 1330.

[0066] According to some embodiments of the present disclosure, the first driving assembly 1340 is used to drive the first movable portion 1310 to move relative to the first base 1320 in the direction of the first optical axis (which is parallel to the Z axis) to achieve the function of autofocus. The first driving assembly 1340 is also used to drive the first movable portion 1310 to move relative to the first base 1320 in the directions of the X axis (first axis) and the Y axis (second axis) to achieve the function of anti-shake. The first optical axis (parallel to the Z axis), the first axis (X axis) and the second axis (Y axis) are perpendicular to each other.

[0067] like Figure 3 As shown, only one coil of the first driving component 1340 is used to represent the first driving component 1340. A person having ordinary knowledge in the art should understand that the first driving component 1340 of the first optical module 1300 can enable the first optical element 2000 to achieve the functions of auto-focusing and anti-shake.

[0068] Please refer to the reply Figure 2 ,like Figure 2 As shown in FIG. 1 , the first circuit component 1330 includes a movable portion fixed end 1331, a fixed portion fixed end 1332, and two flexible portions 1333. Figure 3 ) is driven, the movable part fixed end 1331 can move relative to the first base 1320 and the fixed end 1332 of the fixed part, and, when observed along the first axis (X axis), the movable part fixed end 1331 of the first circuit component 1330 does not overlap with the protruding structure 1220 of the base 1200.

[0069] According to some embodiments of the present disclosure, the movable portion fixed end 1331 is movably connected to the fixed portion fixed end 1332 via the flexible portion 1333. When observed along the first optical axis (which is parallel to the Z axis), the flexible portion 1333 is at least partially located on two opposite sides of the first optical module 1300 having a polygonal structure, and the two opposite sides of the first optical module 1300 are both parallel to the first axis. In addition, the flexible portion 1333 surrounds the protruding structure 1220 of the base 1200 or may partially contact the protruding structure 1220 of the base 1200, that is, when observed along the first optical axis, the first circuit component 1330 and the protruding structure 1220 of the base 1200 may not overlap, and the flexible portion 1333 may be located between the base 1200 and the protruding structure 1220, thereby effectively utilizing the space in the housing 1100 and improving the freedom of movement of the first movable portion 1310 on the first axis (X axis) and the second axis (Y axis), the details of which are described in detail. Figure 5 Shown more clearly.

[0070] Please refer to Figure 3 ,like Figure 3 As shown in FIG. 1 , the second optical module 1400 includes a second movable portion 1410 , a second base 1420 , a second circuit component 1430 , and a second driving component 1440 . The second movable portion 1410 is connected to the second optical element 3000 .

[0071] According to some embodiments of the present disclosure, the second movable portion 1410 can move relative to the second base 1420. The second circuit component 1430 is used to connect the second contact point 1720 ( Figure 2 ) connected to external circuits.

[0072] According to some embodiments of the present disclosure, the second circuit component 1430 is a terminal partially embedded in the second base 1420. Figure 1 It can be more clearly seen that the second circuit assembly 1430 is exposed from the opening 1120 of the housing 1100 ( Figure 2 ) to connect to the connecting circuit assembly 1700 ( Figure 2 The second driving assembly 1440 is used to drive the second movable portion 1410 to move relative to the second base 1420.

[0073] Please refer to the reply Figure 2 According to some embodiments of the present disclosure, the second optical module 1400 is disposed on the housing 1100. The second optical module 1400 is connected to the second optical element 3000. The second optical element 3000 has a second optical axis, which is substantially parallel to the first optical axis and the Z axis.

[0074] In this embodiment, the first optical unit 1500 may be an optical element such as a prism that changes the direction of light. The second optical unit 1600 may be an optical element including a plurality of lenses. The second optical unit 1600 is disposed in the accommodation space 1222 of the protruding structure 1220. The first optical element 2000 may be a photosensitive element. The second optical element 3000 may be an optical element such as an aperture or a blade that controls the amount of light entering.

[0075] According to some embodiments of the present disclosure, when light enters the optical system 1000, it first passes through the second optical element 3000 connected to the second optical module 1400 that controls the amount of incoming light, and then passes through the second optical unit 1600. Then, the light enters the first optical unit 1500 from the second optical unit 1600. When the light passes through the first optical unit 1500, its traveling direction is changed.

[0076] For example, in Figure 2 In the embodiment shown, light enters the first optical unit 1500 from the -Z direction and leaves the first optical unit 1500 from the +Z direction. Then, the light enters the first optical module 1300 from the +Z direction to enter the first optical element 2000 as a photosensitive element.

[0077] According to some embodiments of the present disclosure, the connection circuit component 1700 is fixedly connected to the base 1200. In detail, the connection circuit component 1700 is a terminal embedded in the base 1200 by insert molding. The connection circuit component 1700 includes a first contact 1710 and a second contact 1720.

[0078] According to some embodiments of the present disclosure, the first contact 1710 and the second contact 1720 correspond to the first circuit component 1330 and the second circuit component 1430, respectively. Figure 1 The first circuit component 1330 is electrically connected to the external circuit via the first contact 1710 of the connecting circuit component 1700. The second circuit component 1430 ( Figure 1 ) is electrically connected to an external circuit via the second contact 1720 of the connecting circuit component 1700.

[0079] According to some embodiments of the present disclosure, when viewed along the first optical axis (which is parallel to the Z axis), the first contact point 1710 and the second contact point 1720 are located on the same side of the base 1200 (for example, the first contact point 1710 and the second contact point 1720 are both on the same side of the base 1200). Figure 2 The upper side of the base 1200 , that is, the side of the base 1200 that supports the first optical module 1300 and the second optical module 1400 .

[0080] According to some embodiments of the present disclosure, two structural reinforcement elements 1800 are respectively disposed at the bends of the flexible portion 1333 of the first circuit assembly 1330 to enhance the structural stability of the flexible portion 1333. The structural reinforcement element 1800 may be made of a metal material. Figure 5 See more clearly in.

[0081] Please refer to Figure 3 .like Figure 3 As shown in FIG. 1 , the second optical unit 1600 corresponds to the first optical unit 1500, and there is a gap between the first optical unit 1500 and the second optical unit 1600. Figure 3 In the figure, it can be seen the center C1 of the first optical unit 1500, the center C2 of the second optical unit 1600, the center C3 of the first optical element 2000, and the center C4 of the second optical element 3000.

[0082] like Figure 3 As shown in FIG. 1 , when viewed along the first optical axis (which is parallel to the Z axis), the center C1 of the first optical unit 1500 does not overlap with the center C2 of the second optical unit 1600. When viewed along the first optical axis (which is parallel to the Z axis), the center C3 of the first optical element 2000 does not overlap with the center C1 of the first optical unit 1500. When viewed along the direction of the first optical axis (which is parallel to the Z axis), the center C1 of the first optical unit 1500 is located between the fixing end 1332 of the fixing portion of the first circuit component 1330 and the center C3 of the first optical element 2000.

[0083] like Figure 3 As shown in FIG. 1 , when viewed along the first optical axis (which is parallel to the Z axis), the center C3 of the first optical element 2000 and the center C1 of the first optical unit 1500 are arranged along the first axis (X axis). When viewed along the first optical axis (which is parallel to the Z axis), the first circuit component 1330 at least partially overlaps with the center C3 of the first optical element 2000, and the first circuit component 1330 does not overlap with the center C1 of the first optical unit 1500.

[0084] like Figure 3 As shown in FIG. 1 , when observed along the first optical axis (which is parallel to the Z axis), the first optical unit 1500 partially overlaps with the center C3 of the first optical element 2000, and the first optical unit 1500 overlaps with the center C4 of the second optical element 3000. When observed along the first axis (X axis), the first optical element 2000 and the second optical unit 1600 at least partially overlap. By means of the above structural design and element configuration, the overall height of the optical system 1000 on the first optical axis (on the Z axis) can be reduced to achieve the purpose of miniaturization.

[0085] Figure 4 A cross-sectional view of the optical system 1000 is shown, wherein arrows indicate the light paths entering the optical system 1000. Figure 4 As shown in FIG. 1 , the mask 1900 is disposed between the first optical unit 1500 and the first optical module 1300 in the direction of the first optical axis (which is parallel to the Z axis) to absorb stray light from the first optical unit 1500. The mask 1900 may be made of a light-absorbing material. Figure 4 As shown in FIG. 1 , one side of the mask 1900 abuts against the protruding structure 1220 of the base 1200 .

[0086] exist Figure 4 Arrows representing the paths that light travels through the optical system 1000 can be seen in FIG. Figure 4 As shown in FIG. 1 , there is a gap between the first optical unit 1500 and the receiving portion 1230 of the base 1200 receiving the first optical unit 1500 to prevent stray light from being generated in the optical system. Figure 4 As shown in FIG. 1 , the first optical unit 1500 includes a first optical surface 1510 , a second optical surface 1520 , a third optical surface 1530 and a fourth optical surface 1540 .

[0087] According to some embodiments of the present disclosure, the first optical surface 1510 is the first reflection surface of the light entering the prism (first optical unit 1500). The second optical surface 1520 is the second reflection surface of the light entering the prism (first optical unit 1500). The third optical surface 1530 is the third reflection surface of the light entering the prism (first optical unit 1500). The fourth optical surface 1540 is the bottom surface of the prism (first optical unit 1500), and the fourth optical surface 1540 is parallel to the second optical surface 1520.

[0088] According to some embodiments of the present disclosure, an angle a between the first optical surface 1510 and the second optical surface 1520 is less than 45 degrees. It should be understood that the size of the first optical unit 1500 of the present invention can be designed according to different sizes of the first optical element 2000 to meet the requirements.

[0089] In addition, Figure 4 It can also be seen that, when viewed along the first axis (X axis), the fixing end 1332 of the fixing portion of the first circuit assembly 1330 at least partially overlaps with the first optical unit 1500 .

[0090] Figure 5 A perspective view of an optical system 1000 according to some embodiments of the present disclosure is shown, wherein the housing 1100 is shown in phantom for illustrative purposes. Figure 5As shown in FIG. 1 , when observed along the first optical axis (which is parallel to the Z axis), the flexible portion 1333 is at least partially located on two opposite sides of the first optical module 1300 having a polygonal structure, and the two opposite sides of the first optical module 1300 are both parallel to the first axis (X axis).

[0091] Figure 6 Display along Figure 1 A cross-sectional view of the optical system 1000 taken along line BB. Figure 6 As shown in , when viewed along the second axis (Y axis), the flexible portion 1333 of the first circuit component 1330 at least partially overlaps with the first optical element 2000 .

[0092] Figure 7 Display along Figure 1 A cross-sectional view of the optical system 1000 taken along line CC. Figure 7 As shown in FIG. 1 , when viewed along the second axis (Y axis), the flexible portion 1333 of the first circuit component 1330 at least partially overlaps with the second optical unit 1600 .

[0093] In summary, the present invention provides an optical system, wherein a second optical module connected to an aperture (second optical element), a first optical unit for changing the light path, and a first optical module connected to a photosensitive element (first optical element) are all arranged on the same side of a base, so that light entering and leaving the optical system are parallel to each other but in opposite directions.

[0094] The above-mentioned effect can bring about the effect that the first optical module and the second optical module are located on the same side of the base, so the number of workstations required in the manufacturing process can be reduced. In addition, since the first optical module and the second optical module are located on the same side of the base, when the optical system is integrated into a device such as a mobile phone, the internal space can be optimized, thereby achieving a miniaturization effect.

[0095] Although the embodiments and advantages of the present disclosure have been disclosed as above, it should be understood that any person with ordinary knowledge in the art can make changes, substitutions and modifications without departing from the spirit and scope of the present disclosure. In addition, the scope of protection of the present disclosure is not limited to the processes, machines, manufacturing, material compositions, devices, methods and steps in the specific embodiments described in the specification. Any person with ordinary knowledge in the art can understand the current or future developed processes, machines, manufacturing, material compositions, devices, methods and steps from the disclosure of the present disclosure, as long as they can implement substantially the same functions or obtain substantially the same results in the embodiments described herein, they can all be used according to the present disclosure. Therefore, the scope of protection of the present disclosure includes the above-mentioned processes, machines, manufacturing, material compositions, devices, methods and steps. In addition, each claim constitutes an individual embodiment, and the scope of protection of the present disclosure also includes the combination of each claim and embodiment.

Claims

1. An optical system, comprising: a first optical module, used to connect a first optical element; a base, wherein the first optical module is connected to the base; as well as A first optical unit is disposed on the base.

2. The optical system of claim 1, wherein the first optical module comprises: a first movable portion, used to connect the first optical element; a first base, wherein the first movable portion is movable relative to the first base; as well as A first circuit component, for electrically connecting to an external circuit, the first circuit component comprising: A movable portion fixed end, movable relative to the first base; a fixed portion fixed end, wherein the movable portion fixed end is movable relative to the fixed portion fixed end; and A flexible portion, wherein the movable portion fixed end is movably connected to the fixed portion fixed end via the flexible portion.

3. The optical system of claim 2, wherein: When observed along a first optical axis of the first optical module, the center of the first optical element does not overlap with the center of the first optical unit; When viewed along the direction of the first optical axis, the center of the first optical unit is located between the center of the first circuit component and the center of the first optical element; When observed along the direction of the first optical axis, the center of the first optical element and the center of the first optical unit are arranged along a first axis, and the first axis is perpendicular to the first optical axis; When observed along the first optical axis, the flexible portion is at least partially located on a side of the first optical module having a polygonal structure that is parallel to the first axis.

4. The optical system of claim 3, wherein the first circuit component at least partially overlaps with a center of the first optical element and the first circuit component does not overlap with a center of the first optical unit when viewed along the first optical axis.

5. The optical system as claimed in claim 3, further comprising a second optical module and a housing, wherein the second optical module is connected to a second optical element and the second optical module is disposed on the housing, and the housing is connected to the base; The base includes a first surface and a second surface, the first surface faces the first optical module, the first surface is perpendicular to the first optical axis, the second surface faces the second optical module, and the first surface and the second surface face the same direction; When viewed along the first optical axis, the first optical unit overlaps with a central portion of the first optical element, and the first optical unit overlaps with a center of the second optical element.

6. The optical system of claim 5, further comprising a connecting circuit assembly, wherein the second optical module comprises: a second movable portion connected to the second optical element; a second base, wherein the second movable portion is movable relative to the second base; a second circuit component, used to connect to the external circuit; The second circuit component is electrically connected to the external circuit via the connecting circuit component, the connecting circuit component is fixedly connected to the base, the first circuit component is electrically connected to the external circuit via the connecting circuit component, the connecting circuit component includes a first contact point and a second contact point, the first contact point and the second contact point correspond to the first circuit component and the second circuit component respectively; When observed along the first optical axis, the first contact point and the second contact point are located on the same side of the base.

7. The optical system of claim 3, wherein when viewed along the first axis, the fixing end of the fixing portion at least partially overlaps with the first optical unit; in, The flexible portion at least partially overlaps the first optical element when viewed along a second axis, the second axis being perpendicular to the first optical axis and the second axis being perpendicular to the first axis.

8. The optical system as claimed in claim 7, further comprising a second optical unit corresponding to the first optical unit, and a gap exists between the first optical unit and the second optical unit; in, When observed along the first optical axis, the center of the first optical unit does not overlap with the center of the second optical unit; wherein, when viewed along the first axis, the first optical element at least partially overlaps with the second optical unit; When viewed along the second axis, the flexible portion and the second optical unit at least partially overlap. 9 . The optical system as claimed in claim 3 , wherein the base comprises a protruding structure, the protruding structure is in a trapezoidal shape when viewed along the direction of the first optical axis, and the flexible portion surrounds the protruding structure. 10 . The optical system as claimed in claim 3 , further comprising a mask disposed between the first optical unit and the first optical module in the direction of the first optical axis to absorb stray light from the first optical unit.

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