Periscopic image capturing device and focusing lens group thereof

Abstract

The present application provides a focusing lens group suitable for a periscope image capturing device. The focusing lens group includes a housing, a liquid lens, a solid lens group, an elastic member group, and a driving assembly. The liquid lens covers an entrance of the housing and includes an operating member. The liquid lens has a liquid lens optical axis. The solid lens group is located in a receiving space of the housing and has a solid lens optical axis. The liquid lens optical axis and the solid lens optical axis substantially coincide. The elastic member group is used to suspend the solid lens group in the receiving space. The driving assembly includes a coil group and a fixed magnet group. The coil group is fixed to the solid lens group, and the fixed magnet group is fixed to the housing and corresponds to the coil group. When the coil group is driven, it interacts with the fixed magnet group to move the solid lens group along the solid lens optical axis to selectively make the solid lens group abut against the operating member.

Description

Technical Field

[0001] This invention relates to a periscope image capturing device and its focusing lens assembly, particularly a focusing lens assembly with a liquid lens. Background Technology

[0002] Most handheld electronic devices are equipped with focusing lens groups to enable camera functionality. The focal length of the focusing lens group varies depending on the application. Some applications use telephoto focusing lens groups, some use short-focal-length focusing lens groups, and some use focusing lens groups that have both telephoto and short-focal-length capabilities. Furthermore, handheld electronic devices continue to evolve towards miniaturization and thinning. Therefore, miniaturizing and thinning focusing lens groups has become a trend. Summary of the Invention

[0003] To address this, the present invention provides a focusing lens assembly comprising a housing, a liquid lens, a solid lens assembly, an elastic element assembly, and a driving assembly. The housing has a receiving space forming an entrance light port. The liquid lens covers the entrance light port and includes an operating element; the liquid lens has a liquid lens optical axis. The solid lens assembly is located within the receiving space and has a solid lens optical axis, which substantially coincides with the liquid lens optical axis. The elastic element assembly suspends the solid lens assembly within the receiving space. The driving assembly includes a coil assembly and a fixed magnet assembly. The coil assembly is fixed to the solid lens assembly, and the fixed magnet assembly is fixed to the housing and corresponds to the coil assembly. When the coil assembly is driven, it interacts with the fixed magnet assembly to move the solid lens assembly along the solid lens optical axis, selectively causing the solid lens assembly to abut against the operating element.

[0004] In some embodiments, the coil group includes two first coils and two second coils, and the fixed magnet group includes three first fixed magnets and three second fixed magnets. Each first coil is fixed to a first side of the solid lens group, each second coil is fixed to a second side of the solid lens group, each first fixed magnet is fixed to a first side of the housing, and each second fixed magnet is fixed to a second side of the housing. Each first coil corresponds to each first fixed magnet, and each second coil corresponds to each second fixed magnet.

[0005] In some embodiments, the first fixed magnets are sequentially adjacent, and each first coil corresponds to each adjacent location of the first fixed magnet; the second fixed magnets are sequentially adjacent, and each second coil corresponds to each adjacent location of the second fixed magnet.

[0006] In some embodiments, the coil group includes three first coils and three second coils, and the fixed magnet group includes four first fixed magnets and four second fixed magnets. Each first coil is fixed to a first side of the carrier, each second coil is fixed to a second side of the carrier, each first fixed magnet is fixed to a first side of the housing, and each second fixed magnet is fixed to a second side of the housing. The first fixed magnets are sequentially adjacent to each other, and each first coil corresponds to each adjacent location of each first fixed magnet. The second fixed magnets are sequentially adjacent to each other, and each second coil corresponds to each adjacent location of each second fixed magnet.

[0007] In some embodiments, the elastic element group normally has a force to cause the solid lens group to abut against the operating element.

[0008] In some embodiments, the elastic element assembly includes a front elastic element and a rear elastic element. The front end of the solid lens assembly is located near the light inlet of the housing, and the other end of the solid lens assembly opposite to the front end is the rear end. The front elastic element is connected between the front end and the housing, and the rear elastic element is connected between the rear end and the housing.

[0009] In some embodiments, the solid-state lens assembly includes a carrier, a plurality of lenses, and a cap. The carrier has a channel to which the plurality of lenses are fixed, and a drive assembly drives the carrier to move along the optical axis of the solid lens to selectively cause the cap to abut against an operating element.

[0010] In some embodiments, the liquid lens further includes a lens frame, a first film, a second film, and a liquid. The lens frame has a perforation, the first film and the second film are fixed to the lens frame and close the perforation, and the liquid is contained between the perforation, the first film, and the second film. An actuating element is connected to the other side of the second film opposite to the liquid.

[0011] The present invention also provides a periscope image capturing device, which includes an optical steering element, a focusing lens assembly, and an image sensor. The optical steering element includes an incident surface, a reflecting surface, and an exit surface. Imaging light enters from the incident surface, is reflected by the reflecting surface, and exits from the exit surface. The focusing lens assembly includes a housing, a liquid lens, a solid lens assembly, an elastic element assembly, and a driving component. The housing has an accommodating space, which forms an entrance and an exit light port. The liquid lens covers the entrance light port and includes an operating element; the liquid lens corresponds to the exit surface and has a liquid lens optical axis. The solid lens assembly is located in the accommodating space and has a solid lens optical axis; the liquid lens optical axis and the solid lens optical axis substantially overlap and are substantially perpendicular to the exit surface. The elastic element assembly is used to suspend the solid lens assembly in the accommodating space. The driving component includes a coil assembly and a fixing magnet assembly. The coil assembly is fixed to the solid lens assembly, and the fixing magnet assembly is fixed to the housing and corresponds to the coil assembly. When the coil assembly is driven, it interacts with the fixed magnet assembly to move the solid-state lens assembly along the solid-state optical axis to selectively bring the solid-state lens assembly against the operating element. The image sensor is located outside the light exit port, and the solid-state optical axis substantially passes through the central region of a sensing area of ​​the image sensor. Attached Figure Description

[0012] Figure 1 This is a perspective view of an embodiment of a focusing lens assembly;

[0013] Figure 2 for Figure 1 3D exploded view;

[0014] Figure 3 for Figure 1 Cross-sectional view at position 3-3;

[0015] Figure 4 for Figure 1 Cross-sectional view at position 4-4;

[0016] Figure 5 A plan view of some embodiments of the driving component;

[0017] Figure 6 An exploded perspective view of some embodiments of the solid-state lens assembly;

[0018] Figure 7A , Figure 7B and Figure 7C To drive the solid-state lens group along the optical axis AX of the solid lens. s A diagram illustrating the movement;

[0019] Figure 8 for Figure 1 A perspective view of an embodiment of a focusing lens assembly excluding the upper housing and liquid lens;

[0020] Figure 9 for Figure 8 A stereoscopic view from another perspective;

[0021] Figure 10 Cross-sectional views of some embodiments of the focusing lens assembly;

[0022] Figure 11 Cross-sectional views of some embodiments of a periscope image acquisition device;

[0023] In the attached figures, the following labels are used:

[0024] 100, 200, 300: Focusing lens group

[0025] 120, 220, 320: Housing

[0026] 122: Upper shell

[0027] 122a: First side

[0028] 122b: Second side

[0029] 124: Lower shell

[0030] 126: Storage space

[0031] 128:Light entrance

[0032] 129,329:Light exit

[0033] 130: Position sensing component

[0034] 132: Hall magnet

[0035] 134: Hall effect sensor

[0036] 140, 240, 340: Liquid Lens

[0037] 142,242: Operating components

[0038] 144,244: First thin film

[0039] 145: Liquid

[0040] 146: Second Thin Film

[0041] 148: Lens frame

[0042] 149: Perforation

[0043] 160, 260, 360: Solid-state lens group

[0044] 162: Seat

[0045] 163: Channel

[0046] 164: Lens

[0047] 166,266: Cap

[0048] 167: Light-transmitting hole

[0049] 168a: First side

[0050] 168b: Second side

[0051] 169a: Frontend

[0052] 169b: Backend

[0053] 170: Elastic component assembly

[0054] 172: Front elastic element

[0055] 172a, 172b: Front shrapnel

[0056] 174: Rear elastic element

[0057] 174a, 174b: Rear shrapnel

[0058] 180: Driver Components

[0059] 182: Coil Group

[0060] 184: First coil

[0061] 186: Second coil

[0062] 188a, 188b: Yoke elements

[0063] 190: Fixed magnet assembly

[0064] 192: Drive Circuit

[0065] 194: First fixed magnet

[0066] 196: Second fixed magnet

[0067] 310: Image Sensor

[0068] 350: Optical Steering Element

[0069] 352: Incident surface

[0070] 354: Reflective surface

[0071] 356:Ejection surface

[0072] AX l : Optical axis of liquid mirror

[0073] AX s :Fixed mirror optical axis

[0074] d: distance. Detailed Implementation

[0075] Please refer to Figures 1 to 2 , Figure 1 This is a perspective view of one embodiment of the focusing lens assembly. Figure 2 for Figure 1 An exploded perspective view of the embodiment. The focusing lens assembly 100 includes a housing 120, a liquid lens 140, a solid lens assembly 160, an elastic element assembly 170, and a drive assembly 180.

[0076] The housing 120 has a receiving space 126, which forms an entrance port 128. A liquid lens 140 covers the entrance port 128 and includes an operating element 142. The liquid lens 140 has a liquid lens optical axis AX. l The solid-state lens group 160 is located in the accommodating space 126 and has a solid-state optical axis AX. s AX of liquid mirror l With the optical axis AX of the fixed mirror sThe components are substantially aligned. The elastic element assembly 170 suspends the solid-state lens assembly 160 within the receiving space 126. The drive assembly 180 includes a coil assembly 182 and a fixing magnet assembly 190. The coil assembly 182 is fixed to the solid-state lens assembly 160, and the fixing magnet assembly 190 is fixed to the housing 120 and corresponds to the coil assembly 182. When the coil assembly 182 is driven, it interacts with the fixing magnet assembly 190 to cause the solid-state lens assembly 160 to move along the solid lens optical axis AX. s The movement selectively brings the solid-state lens assembly 160 against the operating element 142.

[0077] The focusing lens group 100 can be used in any device that requires zoom, such as digital cameras, mobile phones, tablets, camcorders, computers, etc. The focusing lens group 100 can also be combined with an optical steering element to form a periscope image capturing device (described in detail later) and applied to the aforementioned devices that require zoom.

[0078] Please combine Figure 3 See also, Figure 3 for Figure 1 Cross-sectional view at position 3-3. Optical axis AX of the liquid mirror. l With the optical axis AX of the fixed mirror s Substantial overlap. This "substantial overlap" refers to the design ensuring that the optical axis AX of the liquid mirror is aligned. l With the optical axis AX of the fixed mirror s They overlap, but after actual manufacturing and assembly, the liquid mirror optical axis AX... l With the optical axis AX of the fixed mirror s They may not have completely overlapped, and the optical axis AX of the liquid mirror... l With the optical axis AX of the fixed mirror s There is a slight error in the alignment. That is, "substantially coincident" refers to the optical axis AX of the liquid mirror. l With the optical axis AX of the fixed mirror s A certain amount of overlap error is allowed in the alignment. The size of this error depends on the application of the focusing lens group. In the case of image sensor 310 or applications where image distortion requirements are small, the error is allowed to be larger; conversely, the error is allowed to be smaller.

[0079] Secondly, in this embodiment, when the elastic element assembly 170 suspends the solid lens assembly 160 in the accommodating space 126 and the coil assembly 182 is not driven, the operating element 142 of the liquid lens 140 and the solid lens assembly 160 (i.e. Figure 3 The solid-state lens group 160 faces the liquid lens 140 (this element is the cap 166, detailed later), and there is a distance d between them. When the coil group 182 is driven, the solid-state lens group 160 can move along the optical axis AX of the solid lens. s Movement (i.e.) Figure 3 (Horizontal axis) and thus change the size of the distance d.

[0080] Specifically, when the coil group 182 is driven, the solid-state lens group 160 can selectively move along... Figure 3 Horizontal axis (i.e., the optical axis AX of the fixed lens) s , that is Figure 3 The solid-state lens group 160 moves to the right or left of the Z-axis (hereinafter referred to as the Z-axis). This occurs when the solid-state lens group 160 moves along the solid-state optical axis AX. s During movement, the focal length of the solid-state lens group 160 changes, achieving the purpose of adjusting the focal length. Furthermore, when the solid-state lens group 160 moves in the +Z direction, reducing the aforementioned distance d, it will contact or even abut against the operating member 142. When the solid-state lens group 160 begins to abut against the operating member 142, the operating member 142 changes the radius of curvature of the liquid lens 140, thus allowing the focusing lens group 100 to have a larger focal length range.

[0081] For example, when the solid-state lens group 160 moves from its normal position (the position where the solid-state lens group 160 is suspended and not in contact with the operating member 142) along the -Z direction ( Figure 3 When the focusing lens group 100 moves to the right (horizontal axis), the image position suitable for focusing is at a distance from infinity to 1 meter; when the solid-state lens group 160 moves from its normal position along the -Z direction ( Figure 3 When the horizontal axis is moved to the left and abuts against the operating member 142, the focusing lens group 100 is suitable for focusing on an image position between 1 meter and 5 centimeters. Thus, Figure 1 The single focusing lens group 100 can meet the needs of both telephoto and super close-up applications.

[0082] Please refer to this again. Figure 1 The housing 120 can be a single piece or a multi-piece design. Figure 1 The housing 120 of this embodiment includes an upper housing 122 and a lower housing 124. The upper housing 122 can be fixed to the lower housing 124 to form the aforementioned accommodating space 126, which is located at the front and rear of the housing 120 (i.e., Figure 1 The image sensor 310 has an input port 128 and an output port 129 in the +Z and -Z directions, respectively. The input port 128 is used to allow imaging light to enter, while the image sensor 310 is located outside the output port 129 (i.e., Figure 1 (Appropriate distance in the -Z direction).

[0083] Next, please refer to the following: Figure 2 and Figure 4 , Figure 4 for Figure 1Cross-sectional view at position 4-4. In some embodiments, coil assembly 182 includes two first coils 184 and two second coils 186, and fixed magnet assembly 190 includes three first fixed magnets 194 and three second fixed magnets 196. Each first coil 184 is fixed to a first side 168a of solid lens assembly 160, each second coil 186 is fixed to a second side 168b of solid lens assembly 160, each first fixed magnet 194 is fixed to a first side 122a of housing 120, and each second fixed magnet 196 is fixed to a second side 122b of housing 120. Each first coil 184 corresponds to each first fixed magnet 194, and each second coil 186 corresponds to each second fixed magnet 196.

[0084] In some embodiments, the second fixed magnets 196 are sequentially adjacent to each other, and the second coils 186 correspond to the adjacent locations of the second fixed magnets 196. For details, please refer to... Figure 2 The center of a second coil 186 is roughly aligned with the adjacent points of two second fixed magnets 196, that is... Figure 2 The center line between the second coil 186 and the second fixed magnet 196 is shown in the diagram; similarly, each first fixed magnet 194 is adjacent to the other in sequence, and each first coil 184 corresponds to the adjacent position of each first fixed magnet 194.

[0085] By configuring two coils 184, 186 and three fixed magnets 194, 196 on one side of the solid-state lens group 160, sufficient thrust can be generated when the coils are driven to propel the solid-state lens group 160 along the optical axis AX of the solid lens. s The movement (overcoming the elastic force of the elastic element group 170) and the thrust generated by the coil group 182 and the fixed magnet group 190 are sufficient to continue pushing the operating member 142 when the solid lens group 160 abuts against the operating member 142, thereby changing the radius of curvature of the liquid lens 140 to meet the needs of objects in infinity and short focal length applications.

[0086] In some embodiments, two first coils 184 are connected in series, and two second coils 186 are connected in series. The drive assembly 180 further includes a drive circuit 192 electrically connected to the first coils 184 and the second coils 186. The drive circuit 192 is externally controlled to selectively drive the coil assembly 182 to adjust the focal length of the focusing lens assembly 100. In some embodiments, the sensitivity of the coil assembly 182 is 7 to 12 μm / mA, and the current output from the drive circuit 192 to the coil assembly 182 is between 15 and 90 mA.

[0087] Please refer to this again. Figure 2The drive assembly 180 further includes two yoke elements 188a and 188b. The yoke elements 188a and 188b are located on the opposite side of the first and second fixed magnets 194 and 196 relative to the first and second coils 184 and 186 to increase the magnetic field strength of the fixed magnet assembly 190. In some embodiments, the yoke elements 188a and 188b are yoke plates that cover the outside of the fixed magnet assembly 190 (i.e., the opposite side relative to the coil assembly 182).

[0088] Please refer to Figure 5 This is a planar schematic diagram of some embodiments of the driving component. Figure 5 The perspective is Figure 4 The view is from a top viewpoint. In some embodiments, the drive assembly 180 includes a coil group 182 and a fixed magnet group 190. The coil group 182 includes three first coils 184 and three second coils 186, and the fixed magnet group 190 includes four first fixed magnets 194 and four second fixed magnets 196. Each first coil 184 is fixed to a first side 168a of the solid lens group 160, each second coil 186 is fixed to a second side 168b of the solid lens group 160, each first fixed magnet 194 is fixed to a first side 122a of the housing 120, and each second fixed magnet 196 is fixed to a second side 122b of the housing 120. Each first coil 184 corresponds to each first fixed magnet 194, and each second coil 186 corresponds to each second fixed magnet 196, that is, as described above, the center of one first coil 184 or second coil 186 is approximately aligned with the adjacent points of two corresponding first fixed magnets 194 or two second fixed magnets 196. Each first coil 184 is connected in series in sequence, and each second coil 186 is connected in series in sequence. These first coils 184 and second coils 186 connected in series are electrically connected to the drive circuit 192.

[0089] therefore, Figure 5 In the embodiment of the focusing lens group 100, by increasing the number of the first coil 184, the second coil 186, the first fixed magnet 194, and the second fixed magnet 196, the force that drives the solid lens group 160 when the driving assembly 180 is driven can be increased.

[0090] As can be seen from the above description, the thrust generated when the drive assembly 180 is driven can be adjusted through the aforementioned different technical means. The design of the thrust magnitude is related to the elastic force of the elastic element group 170, the weight of the solid lens group 160, and the force required to push the liquid lens 140 operating member 142. That is, the required drive assembly 180 can be designed according to the elastic force of the elastic element group 170, the weight of the solid lens group 160, and the force required to push the liquid lens 140 operating member 142. For example, but not limited to, the number of the first coil 184, the second coil 186, the first fixed magnet 194, and the second fixed magnet 196, the magnetic field strength of the first fixed magnet 194 and the second fixed magnet 196, the sensitivity of the first coil 184 and the second coil 186, the driving current, etc.

[0091] Please refer to Figure 6 This is an exploded perspective view of an embodiment of a solid-state lens assembly. In some embodiments, the solid-state lens assembly 160 includes a carrier 162, a plurality of lenses 164, and a cap 166. The carrier 162 has a channel 163, and the plurality of lenses 164 are fixed to the channel 163. A driving assembly 180 drives the carrier 162 along the solid lens optical axis AX. s The movement selectively causes the cap 166 to abut against the operating member 142. Specifically, when the coil assembly 182 of the drive assembly 180 is driven, the coil assembly 182 interacts with the fixed magnet assembly 190 to cause the carrier 162 to move along the optical axis AX of the solid lens. s The cap 166 is moved to selectively abut the operating member 142. The carrier 162 is housed within the receiving space 126 of the housing 120. Channel 163 corresponds to the receiving space 126. Multiple lenses 164 are fixed inside the carrier 162 within the channel 163. Imaging light enters from the light inlet 128 of the housing 120, passes through the channel 163 and through the multiple lenses 164, and exits from the light outlet 129 of the housing 120. The multiple lenses 164 in the diagram are shown as a general schematic representation of the lenses 164; in reality, these lenses 164 are individual, separate lenses fixed within the carrier 162. The number of lenses 164 can be two, three, four, or more, depending on design requirements.

[0092] Figure 6 The cap 166 in this embodiment has a light-transmitting hole 167 and a through channel 163. The centers of the light-transmitting hole 167, the channel 163, and the accommodating space 126 correspond to each other, allowing imaging light to pass through the solid-state lens group 160 and reach the image sensor 310 (described in detail later) located behind the focusing lens group 100. In some embodiments, the cap 166 does not have a light-transmitting hole 167, but the cap 166 is made of transparent material, such as transparent glass. In this way, the cap 166 can not only allow imaging light to pass through, but also serve to block the operating member 142.

[0093] Please also refer to Figure 4 and Figure 5 In some embodiments, the liquid lens 140 further includes a lens frame 148, a first thin film 144, a second thin film 146, and a liquid 145. The lens frame 148 has a perforation 149. The first thin film 144 and the second thin film 146 are fixed to the lens frame 148 and close the perforation 149. Specifically, the perforation 149 has two openings in the lens frame 148, and the first thin film 144 and the second thin film 146 close the two openings of the perforation 149. The liquid 145 is contained between the first thin film 144 and the second thin film 146 in the closed space formed by the perforation 149. An operating member 142 is connected to the other side of the second thin film 146 opposite to the liquid 145, that is, the operating member 142 is connected to the surface of the second thin film 146 facing the -Z direction. The first thin film 144, the second thin film 146, and the liquid 145 may be made of transparent materials. In some embodiments, the operating member 142 is made of a transparent material, such as, but not limited to, transparent glass. In this way, the imaging light can pass through the first thin film 144, the liquid 145, the second thin film 146 and the operating member 142 in sequence and enter the solid lens group 160.

[0094] In some embodiments, the operating member 142 contacts, adheres to, or is bonded to the surface of the second film 146 facing the -Z direction. This achieves the function of being abutted by the solid lens assembly 160.

[0095] In some embodiments, the operating member 142 is made of transparent glass, and the cap 166 has a light-transmitting hole 167, i.e. Figure 2 The embodiment shown. In this embodiment, the light-transmitting hole 167 of the cap 166 should be smaller than the operating member 142, so that when the solid lens group 160 is driven to move in the +Z direction, the cap 166 can abut against the operating member 142, thereby changing the radius of curvature of the liquid lens 140.

[0096] Please also refer to Figure 7A , Figure 7B and Figure 7C It drives the solid-state lens group 160 along the optical axis AX of the solid lens by the drive component 180. s A schematic diagram of the movement. The first membrane 144 and the second membrane 146 are elastic. When the operating member 142 is abutted by the cap 166 (e.g. Figure 7C As shown), the second film 146 moves toward the +Z axis to squeeze the liquid 145 and cause the first film 144 to bulge in the +Z direction, thereby changing the shape of the first film 144 and thus changing the radius of curvature of the liquid lens. Figure 7A The display shows the state of the solid-state lens group 160 moving towards the -Z axis driven by the drive assembly 180. As can be seen in the figure, the distance d between the cap 166 of the solid-state lens group 160 and the operating member 142 is... Figure 3 The distance d is large, this display Figure 3 and Figure 7A The focal lengths of the focusing lens group 100 are different. Similarly, Figure 7B The display drive assembly 180 drives the solid-state lens group 160 to move towards the +Z axis, causing the cap 166 to contact the operating member 142. At this time, since the cap 166 only contacts the operating member 142 without pushing it, the first thin film 144 maintains its initial curved shape. Then, when the drive assembly 180 continues to drive the solid-state lens group 160 to move towards the +Z axis, the first thin film 144 will begin to bulge outward in the +Z direction, changing its curved shape and thus changing the focal length, achieving the short focal length (close focal length) function of the focusing lens group 100.

[0097] Please refer to this again. Figure 2 , Figure 8 and Figure 9 , Figure 8 for Figure 1 A perspective view of an embodiment of a focusing lens assembly excluding the upper housing 122 and the liquid lens 140. Figure 9 for Figure 8 Another perspective view. The elastic element assembly 170 includes a front elastic element 172 and a rear elastic element 174. The solid-state lens assembly 160 has a front end 169a (i.e., in the +Z direction) near the light inlet 128 of the housing 120. The other end of the solid-state lens assembly 160 opposite the front end 169a is the rear end 169b (i.e., in the -Z direction, near the light outlet 129 of the housing). The front elastic element 172 connects the front end 169a and the housing 120, and the rear elastic element 174 connects the rear end 169b and the housing 120. In this way, the elastic element assembly 170 can suspend the solid-state lens assembly 160 in the accommodating space 126.

[0098] Specifically, the front elastic member 172 includes two front springs 172a and 172b, which are connected between the front end 169a and the housing 120; the rear elastic member 174 includes two rear springs 174a and 174b, which are connected between the rear end 169b and the housing 120. As can be seen from the figure, the front spring 172a is connected between the front end 169a of the carrier 162 (i.e., facing the liquid lens 140) and the first side 122a of the upper housing 122, and the front spring 172b is connected between the front end 169a of the carrier 162 and the second side 122b of the upper housing 122; similarly, the rear spring 174a is connected between the rear end 169b of the carrier 162 (i.e., facing the -Z direction) and the first side 122a of the upper housing 122, and the rear spring 174b is connected between the rear end 169b of the carrier 162 and the second side 122b of the upper housing 122.

[0099] In some embodiments, the front elastic element 172 and the rear elastic element 174 are each a single piece of spring, meaning that the two front springs 172a and 172b are actually connected and are the same piece of spring, and the two rear springs 174a and 174b are actually connected and are the same piece of spring, which can also achieve the purpose of suspending the solid lens assembly 160 in the accommodating space 126. In embodiments where the front elastic element 172 and the rear elastic element 174 are each a single piece of spring, the front elastic element 172 and the rear elastic element 174 must avoid the area through which the imaging light passes (e.g., avoid the perforation 149 of the lens frame 148 and the light-transmitting hole 167 of the cap 166).

[0100] In the foregoing embodiments, the solid-state lens group 160 and the liquid lens 140 of the focusing lens group 100 maintain a distance d in normal operation (i.e., the drive assembly 180 is not driven). This distance can be a predetermined distance, the size of which depends on design requirements. This predetermined distance can be adjusted by appropriately designing the elastic force (suspension force) of the aforementioned elastic element group 170 and the weight of the solid-state lens group 160. However, the normal relationship between the solid-state lens group 160 and the liquid lens 140 is not limited to this. In some embodiments, the solid-state lens group 160 can normally contact the operating element 142 of the liquid lens 140 (e.g., ...). Figure 7B As shown), or the solid lens group 160 may normally have an operating element 142 that continuously presses against the liquid lens 140 with a pre-force (force).

[0101] refer to Figure 10 This is a cross-sectional view of some embodiments of the focusing lens assembly. Figure 10 Sectional view location and Figure 3 The same applies. In this embodiment, the liquid lens 240 of the focusing lens group 200 is fixed to the housing 220, and the solid lens group 260 is suspended inside the housing 220. The solid lens group 260 is supported by an elastic element group (not shown in the figure, but similar to...). Figure 2 The elastic element assembly 170 normally has a preload that pushes the solid lens assembly 260 toward the liquid lens 240 (i.e., the cap 266 of the solid lens assembly 260 normally pushes against the operating element 242 of the liquid lens 240). This normally resisted state is... Figure 10 As shown, after the operating member 242 is abutted, the first thin film 244 bulges slightly outward (towards the +Z direction). When the focusing lens group 200 is in use (e.g., but not limited to, when the drive assembly is energized), the drive assembly (not shown in the figure, but similar to...) Figure 2The drive assembly 180 pushes the solid lens group 260 to move slightly in the -Z direction, creating a predetermined distance between the solid lens group 260 and the liquid lens 240. When the control device wants to control the drive assembly to provide a short focal length function for the focusing lens group 200, the control device controls the drive assembly to move the solid lens group 260 in the +Z direction, causing the solid lens group 260 to contact or abut against the operating member 242, depending on the short focal length requirement. In this embodiment, since the elastic member group provides a preload so that the solid lens group 260 can normally abut against the liquid lens 240, when the coil group of the drive assembly (similar to...) Figure 2 When coil assembly 182 (not shown in the diagram) is driven to push against liquid lens 240, the thrust required by the coil assembly will be less than [amount missing]. Figure 3 The thrust required to generate by coil assembly 182. In this way, Figure 10 The thrust specification of the drive assembly configured in the focusing lens group 200 of the embodiment may be less than [amount missing]. Figure 3 The thrust specification of the drive assembly 180 configured in the focusing lens group 100 of the embodiment.

[0102] There are several ways to generate the aforementioned preload in the elastic element assembly 170. One method is to design it so that there is a height difference between the fixed positions of the front elastic element 172 and the rear elastic element 174 of the elastic element assembly 170. Specifically, there is a height difference between the position where the housing is used to fix one end of the front elastic element 172 and the position where the solid lens assemblies 160 and 260 are used to fix the other end of the front elastic element 172; similarly, there is a height difference between the position where the housing is used to fix one end of the rear elastic element 174 and the position where the solid lens assemblies 160 and 260 are used to fix the other end of the rear elastic element 174. When the elastic element assembly 170 is assembled between the solid lens assemblies 160 and 260 and the housings 120 and 220, the solid lens assemblies 160 and 260 can consistently abut against the operating parts 142 and 242 of the liquid lenses 140 and 240.

[0103] Secondly, there is a height difference between the two ends of the front elastic member 172 and the rear elastic member 174 in their normal state, and the position of the housing used to fix the front elastic member assembly is roughly flush with the position of the solid lens assembly 160, 260 used to fix the elastic member assembly. In this way, when the elastic member assembly 170 is assembled between the solid lens assembly 160, 260 and the housing 120, 220, the solid lens assembly 160, 260 can always abut against the operating parts 142, 242 of the liquid lens 140, 240.

[0104] Please refer to the following: Figure 2The focusing lens assembly 100 further includes a position sensing component 130, which includes a Hall magnet 132 and a Hall sensor 134. The Hall magnet is fixed to the solid-state lens assembly 160, and the Hall sensor 134 is fixed to the lower housing 124. In this way, when the solid-state lens assembly 160 is driven, the controller can obtain the position of the solid-state lens assembly 160 through the Hall sensor 134 and determine its corresponding focal length.

[0105] Please refer to Figure 11 This is a cross-sectional view of some embodiments of a periscope image capturing device. The periscope image capturing device includes an optical steering element 350, a focusing lens assembly 300, and an image sensor 310. The optical steering element 350 includes an incident surface 352, a reflecting surface 354, and an exit surface 356. An imaging ray enters from the incident surface 352, is reflected by the reflecting surface 354, and exits from the exit surface 356. The focusing lens assembly 300 includes a housing 320, a liquid lens 340, a solid lens assembly 360, and an elastic element assembly (similar to...). Figure 2 The elastic component group 170 (not shown) and the drive assembly (similar) Figure 2 (Driver component 180, therefore not shown).

[0106] The structure of the focusing lens group 300 is similar to that of the aforementioned embodiments of the focusing lens groups 100 and 200, and therefore will not be described again. The following only explains the relationship between the focusing lens group 300, the optical steering element 350, and the image sensor 310. The liquid lens 340's liquid mirror optical axis AX... l With the solid lens group 360 solid lens optical axis AX s Corresponding to exit surface 356. In some embodiments, the liquid mirror optical axis AX l With the optical axis AX of the fixed mirror s The image sensor 310 is located perpendicular to the light exit surface 356 and in the central region of the light exit surface 356. The image sensor 310 is located outside the light exit port 329 (i.e.,...). Figure 11 (Z-direction). Fixed mirror optical axis AX s Essentially, it passes through the central region of the sensing area of ​​the image sensor 310, i.e., the fixed lens optical axis AX. s It is actually near the center of the sensing area of ​​the image sensor 310.

[0107] In some embodiments, the periscope image capturing device further includes an image stabilization component (not shown) for driving the image sensor 310 to provide image stabilization during video recording.

[0108] In summary, according to some embodiments, the focusing lens groups 100, 200, 300 and the periscope image capturing device having the focusing lens groups 100, 200, 300, under appropriate control, can achieve zoom function not only by utilizing the solid lens groups 160, 260, 360, but also by combining with the liquid lenses 140, 240, 340, and have both telephoto and focal length functions.

Claims

1. A focusing lens assembly, characterized in that, Include: The housing has an accommodating space, wherein the accommodating space forms a light inlet in the housing; A liquid lens covering the light inlet and including an operating element, the liquid lens having a liquid mirror optical axis, wherein the liquid lens includes a first thin film; A solid lens group is located in the accommodating space and has a solid lens optical axis, wherein the liquid lens optical axis substantially coincides with the solid lens optical axis; Elastic element assembly for suspending the solid lens assembly within the receiving space; and Driver components, including: The coil assembly is fixed to the solid-state lens assembly; and A fixed magnet assembly is fixed to the housing and corresponds to the coil assembly; When the coil group is driven, it interacts with the fixed magnet group to move the solid lens group along the optical axis of the solid lens to selectively abut the operating member. The elastic element group normally has a force to make the solid lens group abut the operating member. After the operating member is abutted, the first film slightly bulges outward. The coil assembly includes two first coils and two second coils, and the fixed magnet assembly includes three first fixed magnets and three second fixed magnets. The first coils are fixed to a first side of the solid lens assembly, and the second coils are fixed to a second side of the solid lens assembly. The first fixed magnets are fixed to a first side of the housing, and the second fixed magnets are fixed to a second side of the housing. The first coils correspond to the first fixed magnets, and the second coils correspond to the second fixed magnets. The first fixed magnets are sequentially adjacent, and the first coils correspond to the adjacent positions of the first fixed magnets respectively; the second fixed magnets are sequentially adjacent, and the second coils correspond to the adjacent positions of the second fixed magnets respectively.

2. The focusing lens assembly according to claim 1, characterized in that, The coil assembly includes three first coils and three second coils, and the fixed magnet assembly includes four first fixed magnets and four second fixed magnets. The first coils are fixed to a first side of the carrier of the solid lens assembly, and the second coils are fixed to a second side of the carrier. The first fixed magnets are fixed to a first side of the housing, and the second fixed magnets are fixed to a second side of the housing. The first fixed magnets are sequentially adjacent, and the first coils correspond to the adjacent positions of the first fixed magnets. The second fixed magnets are sequentially adjacent, and the second coils correspond to the adjacent positions of the second fixed magnets.

3. The focusing lens assembly according to any one of claims 1 to 2, characterized in that, The elastic element assembly includes a front elastic element and a rear elastic element. The solid lens assembly is located at the light inlet near the housing as the front end, and the other end of the solid lens assembly relative to the front end is the rear end. The front elastic element is connected between the front end and the housing, and the rear elastic element is connected between the rear end and the housing.

4. The focusing lens assembly according to claim 3, characterized in that, The front elastic member includes two front spring sheets connected between the front end and the housing; the rear elastic member includes two rear spring sheets connected between the rear end and the housing.

5. The focusing lens assembly according to claim 1, characterized in that, The solid-state lens group comprises: A carrier with a passageway; Multiple lenses are fixed to the channel; and Cap; The drive assembly drives the carrier to move along the optical axis of the fixed lens to selectively cause the cap to abut against the operating element.

6. The focusing lens assembly according to claim 1, characterized in that, The liquid lens further comprises: Lens frame with perforations; First thin film; A second film, wherein the first film and the second film are fixed to the lens frame and seal the perforation; and A liquid is contained between the perforation, the first film, and the second film; The operating element is connected to the other side of the second film opposite to the liquid.

7. A periscope-type image capturing device, characterized in that, Include: An optical steering element includes an incident surface, a reflecting surface, and an exiting surface. Imaging rays are incident from the incident surface, reflected by the reflecting surface, and exited from the exiting surface. The focusing lens group includes: The housing has an accommodating space, wherein the accommodating space forms a light inlet and a light outlet in the housing; A liquid lens covers the light inlet and includes an operating element. The liquid lens corresponds to the exit surface and has a liquid mirror optical axis. The liquid lens includes a first thin film. A solid lens group is located in the accommodating space and has a solid lens optical axis, wherein the liquid lens optical axis substantially overlaps with the solid lens optical axis and is substantially perpendicular to the exit surface; Elastic element assembly for suspending the solid lens assembly within the receiving space; and Driver components, including: The coil assembly is fixed to the solid-state lens assembly; and A fixed magnet assembly is fixed to the housing and corresponds to the coil assembly; When the coil assembly is driven, it interacts with the fixed magnet assembly to move the solid lens assembly along the optical axis of the solid lens to selectively abut the operating member. The elastic element assembly normally possesses force to abut the solid lens assembly against the operating member. After the operating member is abutted, the first thin film slightly bulges outward. An image sensor is located outside the light outlet, and the optical axis of the fixed lens passes through the central region of the sensing area of ​​the image sensor. The coil assembly includes two first coils and two second coils, and the fixed magnet assembly includes three first fixed magnets and three second fixed magnets. The first coils are fixed to a first side of the carrier of the solid lens assembly, and the second coils are fixed to a second side of the carrier. The first fixed magnets are fixed to a first side of the housing, and the second fixed magnets are fixed to a second side of the housing. The first fixed magnets are sequentially adjacent, and the first coils correspond to the adjacent positions of the first fixed magnets. The second fixed magnets are sequentially adjacent, and the second coils correspond to the adjacent positions of the second fixed magnets.

8. The periscope image capturing device according to claim 7, characterized in that, The elastic element assembly includes a front elastic element and a rear elastic element. The solid lens assembly is located near the light inlet of the housing as the front end and near the light outlet as the rear end. The front elastic element is connected between the front end and the housing, and the rear elastic element is connected between the rear end and the housing.

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