Piezoelectric type driving zoom periscope lens

Abstract

The invention discloses a piezoelectric type driving zoom periscope lens. The periscope lens comprises a zoom lens assembly and a prism assembly used for refracting incident light to the zoom lens assembly. The zoom lens assembly comprises two zoom lenses arranged in the front-back direction of the light path, and at least one of the two zoom lenses can move front and back along the light path so as to change the distance between the two zoom lenses to achieve zooming. The driving mechanism is used for driving the zoom lens to move; the driving mechanism comprises a carrier used for bearing the zoom lens, a piezoelectric assembly used for driving the carrier to move and a clamping piece fixed to the carrier. The clamping piece is used for clamping the output end of the piezoelectric assembly, so that the output end drives the carrier to move; the clamping piece is formed by bending an elastic sheet and comprises a connecting end used for being connected with the carrier and a clamping end used for clamping the output end of the piezoelectric assembly. According to the invention, the high-performance clamping piece is matched with the piezoelectric assembly to drive the zoom lens assembly, so that high-quality zooming is realized.

Description

Technical Field

[0001] The invention belongs to the field of optical technology, and in particular relates to a piezoelectric driven zoom periscope lens. Background Art

[0002] With the continuous advancement of technology, image capture devices such as digital cameras or mobile phones with camera functions, video game consoles, PDAs, etc. have become increasingly popular on the market. Their convenient function of being able to take pictures and view them immediately has become a convenient tool for the public to use to record things in daily life or work.

[0003] In order to achieve the zoom function, the existing common lens needs to be retractable. In order to further reduce the size of the lens and improve the portability of electronic devices, a periscope lens (PrismType Lens) has been invented. The lens of the periscope lens is hidden inside and refracts the incident light onto the lens through a prism. The lens then moves on a linear optical axis to adjust the optimal shooting focal length. Therefore, the periscope lens does not need to be retracted to zoom, thereby reducing the structural setting of the retractable lens, which will greatly reduce the thickness and weight of the entire lens, thereby effectively improving the portability of the image capture device.

[0004] Prior art CN202110159940.5 discloses a periscope camera module, which includes: a light turning element; a zoom lens group including a fixed part, a zoom part and a focus part; a photosensitive component corresponding to the zoom lens group; and a driving component, including: a driving housing, a first driving element and a second driving element located in the driving housing, wherein the first driving element and the second driving element are arranged on the first side of the zoom lens group, and the first driving element and the second driving element are arranged opposite to each other. In particular, the periscope camera module uses a piezoelectric actuator as a driving element to provide a sufficiently large driving force.

[0005] In the above-mentioned prior art, the piezoelectric actuator transmission shaft is frictionally matched so that the moving part can drive the lens barrel to move. As a key component, the performance of the moving part directly affects the movement of the entire lens assembly. However, the above-mentioned prior art does not disclose the specific structure of the moving part, but only describes that "the moving part can be implemented as a clamping mechanism for clamping the transmission shaft, wherein the clamping mechanism can be a clamping mechanism with adjustable clamping force, or a clamping mechanism made of partially or entirely elastic material".

[0006] In the prior art, how to set a mobile part with stable clamping force and adaptability is a problem that needs to be solved urgently. Summary of the invention

[0007] The purpose of the present invention is to provide a piezoelectric driven zoom periscope lens, partially solve or alleviate the above-mentioned deficiencies in the prior art, provide a high-performance clip to cooperate with the piezoelectric component to drive the zoom lens component, thereby achieving high-quality zoom.

[0008] In order to solve the above-mentioned technical problems, the present invention specifically adopts the following technical solutions:

[0009] A piezoelectric driven zoom periscope lens comprises a zoom lens assembly and a prism assembly for refracting incident light onto the zoom lens assembly; the zoom lens assembly comprises two zoom lenses arranged along the front-rear direction of an optical path, at least one of the two zoom lenses can move forward and backward along the optical path so as to change the distance between the two lenses to achieve zooming; the lens assembly also comprises a driving mechanism for driving the zoom lens to move; the driving mechanism comprises a carrier for carrying the zoom lens, a piezoelectric assembly for driving the carrier to move, and a clamp fixed on the carrier; the clamp clamps the output end of the piezoelectric assembly so that the output end drives the carrier to move; the clamp is formed by bending an elastic sheet, and comprises a connecting end for connecting to the carrier and a clamping end for clamping the output end of the piezoelectric assembly.

[0010] As an improvement, the connecting end of the clip is bent 90° to form a connecting part I, and then bent 90° to form a first clamping part parallel to the connecting end; the first clamping part is bent 90° to form a connecting part II parallel to the connecting part I; the connecting part II is bent 90° to form a supporting part parallel to the first clamping part; the supporting part is bent 90° to form a connecting part III parallel to the connecting part II; the connecting part III is bent 90° to form a second clamping part parallel to the first clamping part; the first clamping part and the second clamping part are used as clamping ends for clamping the output end of the piezoelectric component.

[0011] As an improvement, the driving mechanism further comprises a guide member arranged parallel to the optical path, and the carrier can move along the guide member.

[0012] As an improvement, the piezoelectric component includes a piezoelectric element, one end of the piezoelectric element is provided with a counterweight and the other end of the piezoelectric element is provided with a ceramic rod as an output end.

[0013] As an improvement, it also includes a bracket for installing the piezoelectric component, the bracket is provided with a mounting groove for accommodating the piezoelectric element and the counterweight and a support plate for supporting the ceramic rod, and the support plate is provided with a U-shaped groove matching the ceramic rod.

[0014] As an improvement, a slot for the welding terminal to pass through is opened at the bottom of the bracket, and the slot is a funnel-shaped structure that is wide outside and narrow inside.

[0015] As an improvement, the carrier is arranged in the base; balls are arranged between the carrier and the base to assist the carrier in sliding; a slide groove parallel to the optical path is opened on the edge of the carrier; the slide groove and the inner corner of the base form a sliding channel for accommodating the balls.

[0016] As an improvement, the carrier and the base are provided with adsorption components that can adsorb each other; the adsorption components include a permanent magnet and an adsorption steel sheet, the permanent magnet is provided on the carrier, and the adsorption steel sheet is provided on the base.

[0017] As an improvement, it further comprises a HALL signal sensor arranged on the flexible circuit board; the HALL signal sensor can determine the position of the carrier by inducing a permanent magnet.

[0018] As an improvement, both zoom lenses can move along the optical path, and the driving mechanism is two sets that drive the two zoom lenses respectively.

[0019] Beneficial effects:

[0020] The piezoelectric driven zoom periscope lens with the above structure uses the clip as the only mechanical connection point between the carrier and the piezoelectric component. The micro-drive displacement generated by the piezoelectric element is accurately transmitted to the carrier through the output end of the ceramic rod that clamps the piezoelectric component, thereby driving the zoom lens to move. The clip and the ceramic rod form a friction motion structure, which converts the clamping force of the elastic sheet into driving force. Compared with traditional gear or connecting rod transmission, it is simpler and more efficient, reducing energy loss and mechanical lag.

[0021] The clip is bent 90° five times to form a "wave-shaped" structure (connection end → connection part I → first clamping part → connection part II → support part → connection part III → second clamping part), which significantly enhances the rigidity of the clip and avoids deformation under force. The parallel design of the double clamping parts forms a symmetrical clamping of the ceramic rod, and cooperates with the U-shaped groove to support the ceramic rod to achieve millimeter-level positioning accuracy, ensuring that the driving force transmission direction is strictly parallel to the optical path. The elastic steel sheet generates a rebound force when clamping, automatically compensates for the attenuation of the clamping force caused by temperature changes, vibrations and other factors, and maintains stable contact for a long time. The clip can be elastically deformed slightly, allowing for slight assembly errors between the ceramic rod and the carrier, reducing processing accuracy requirements and improving production compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale. Obviously, the drawings described below are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is an exploded view of the present invention.

[0024] Figure 2 Schematic diagram of the structure of the clip.

[0025] Figure 3 It is a longitudinal cross-sectional view of the present invention.

[0026] Figure 4 It is a transverse cross-sectional view of the present invention.

[0027] Figure 5 An enlarged view of the zoom lens assembly and drive mechanism.

[0028] Figure 6 This is the installation diagram of the HALL signal sensor.

[0029] Figure 7 Schematic diagram of the structure of the piezoelectric component.

[0030] Figure 8 Schematic diagram of the back structure of the piezoelectric component.

[0031] Summary of reference numerals:

[0032] 1-housing; 2-prism bracket; 3-prism; 4-sliding rod; 5-zoom lens I; 6-zoom lens II; 7-clip I; 8-clip II; 9-carrier I; 10-carrier II; 11-piezoelectric component I; 12-piezoelectric component II; 13-permanent magnet; 14-adsorption steel sheet; 15-ball; 16-base; 17-flexible circuit board; 18-HALL signal sensor.

[0033] 71 -connecting part; 72 -connecting part I; 73 -first clamping part; 74 -connecting part II; 75 -supporting part; 76 -connecting part III; 77 -second clamping part.

[0034] 111 - piezoelectric element; 112 - counterweight; 113 - ceramic rod; 115 - welding terminal; 116 - bracket; 117 - support plate. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] Herein, suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and have no specific meanings by themselves. Therefore, "module", "component" or "unit" can be used mixedly.

[0037] In this document, the terms "upper", "lower", "inner", "outer", "front", "back", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0038] In this document, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Herein "and / or" includes any and all combinations of one or more of the associated listed items.

[0040] Herein, "plurality" means two or more than two, ie, it includes two, three, four, five, etc.

[0041] like Figure 1As shown, the present invention provides a piezoelectric driven zoom periscope lens, comprising a zoom lens assembly and a prism assembly for refracting incident light onto the zoom lens assembly; the prism assembly is composed of a prism (3) and a prism bracket (2). The zoom lens assembly comprises two zoom lenses arranged along the front-to-back direction of the optical path, namely, zoom lens I (5) and zoom lens II (6). At least one of the two zoom lenses can move forward and backward along the optical path to change the distance between the two to achieve zooming, and also comprises a driving mechanism for driving the zoom lens to move. The driving mechanism comprises a carrier for carrying the zoom lens, a piezoelectric assembly for driving the carrier to move, and a clip fixed on the carrier.

[0042] In this embodiment, both zoom lenses can move along the optical path, and the driving mechanism is two sets for driving the two zoom lenses respectively, that is, the piezoelectric assembly includes a piezoelectric assembly I (11) and a piezoelectric assembly II (12), the carrier includes a carrier I (9) and a carrier II (10), and the clip also includes a clip I (7) and a clip II (8), which are used to cooperate with the zoom lens I and the zoom lens II respectively. During the zooming process, the two zoom lenses simultaneously approach or move away from each other, so that the zooming speed is greatly accelerated.

[0043] The connecting ends of the clips (clip I (7), clip II (8)) are fixedly connected to the carriers (carrier I (9), carrier II (10)) that carry the zoom lenses (zoom lens I (5), zoom lens II (6)), so that the clips become a bridge between the carriers and the piezoelectric components (piezoelectric components I (11), piezoelectric components II (12)), thereby ensuring the structural integrity of the entire drive system. Through this connection method, the clips can accurately transmit the driving force generated by the piezoelectric components to the carrier, thereby driving the zoom lens to move. The clamping end of the clip clamps the output end of the piezoelectric component to form a tight combination. Not only is the stable contact between the piezoelectric component and the clips ensured, but also the piezoelectric component can effectively drive the carrier to move through the clips when generating a driving displacement.

[0044] The clip is made of an elastic sheet such as a steel sheet, and the elastic material itself has a certain elastic deformation ability. When the clip clamps the output end of the piezoelectric component, the elastic deformation of the elastic sheet will generate a clamping force, tightly holding the output end of the piezoelectric component to prevent loosening or detachment during movement. The characteristics of the elastic sheet allow the clip to provide a rebound force while providing a clamping force. This rebound force can automatically compensate for changes in clamping force caused by external factors such as vibration and temperature changes. For example, during the operation of the equipment, if there is a slight vibration, the contact between the clip and the output end of the piezoelectric component may change slightly, but the rebound force of the clip will quickly restore the clamping force to a stable state, ensuring the reliable operation of the drive system.

[0045] The friction motion structure formed by clamping the clip and the output end of the piezoelectric component is the key mechanism for driving the zoom lens to move. When the piezoelectric component generates a driving displacement, the friction between the clip and the output end of the piezoelectric component will drive the clip and the carrier connected to it to move together. This friction-based motion transmission method has high motion accuracy and response speed. Compared with some complex mechanical transmission structures, the friction motion structure is simpler, reducing the errors and energy loss caused by too many mechanical parts, which helps to improve the accuracy and efficiency of the zoom operation of the periscope lens.

[0046] More specifically, Figure 2 As shown, the connecting end of the clip is bent 90° to form a connecting portion I (72), which is further bent 90° to form a first clamping portion (73) parallel to the connecting end; the first clamping portion (73) is bent 90° to form a connecting portion II (74) parallel to the connecting portion I (72); the connecting portion II (74) is bent 90° to form a supporting portion (75) parallel to the first clamping portion (73); the supporting portion (75) is bent 90° to form a connecting portion III (76) parallel to the connecting portion II (74); the connecting portion III (76) is bent 90° to form a second clamping portion (77) parallel to the first clamping portion (73); the first clamping portion (73) and the second clamping portion (77) are used as clamping ends for clamping the output end (ceramic rod (113)) of the piezoelectric component.

[0047] The multi-stage bending design greatly enhances the rigidity of the clip as a whole. Compared with a simple flat plate structure, the multi-stage bending enables the clip to better resist deformation when subjected to external force, ensuring the stability of the clip when clamping the output end of the piezoelectric component (ceramic rod (113)) and connecting with the carrier (carrier I (9), carrier II (10)), reducing the clamping force change or connection loosening caused by structural deformation.

[0048] The first clamping portion (73), the supporting portion (75) and the second clamping portion (77) are parallel to each other, and the connecting portion I (72), the connecting portion II (74) and the connecting portion III (76) are parallel to each other, and such parallel structures form a mutually supporting relationship. During the operation of the clip, when subjected to external force or force generated by the movement of the output end of the piezoelectric component (ceramic rod (113)), the parallel structure can evenly disperse the force to each part, avoiding local stress concentration, thereby further improving the structural stability and durability of the clip.

[0049] The first clamping portion (73) and the second clamping portion (77) serve as clamping ends, and their parallel structural design can ensure accurate positioning and clamping of the output end of the piezoelectric component. Since the two clamping portions are arranged in parallel and opposite to each other, when clamping the output end of the piezoelectric component, it can be ensured that the clamping force is evenly distributed on both sides of the output end, avoiding the tilt or offset of the output end of the piezoelectric component caused by uneven clamping force, thereby ensuring the accuracy and stability of the displacement driven by the piezoelectric component, and then accurately driving the zoom lens on the carrier to move. In addition, the multi-bend structure can make the clip have a better layout in space, making the overall structure more compact, which is conducive to the miniaturization of the entire periscope lens.

[0050] In order to improve the stability of the movement of the zoom lens, the driving mechanism of the present invention further includes a guide member arranged parallel to the optical path, and the carrier can move along the guide member. More specifically, the guide member is a slide bar (4) that penetrates the carrier. When the driving mechanism is working, the piezoelectric component drives the carrier to move through the clamp, and the existence of the slide bar (4) enables the carrier to move only along the axial direction of the slide bar. This avoids the deviation of the carrier due to interference from other external forces or imbalance of its own structure during the movement, and ensures that the zoom lens can accurately move along the preset optical path direction, thereby ensuring the accuracy of the zoom operation. In a periscope lens, the stability of the optical path is crucial to the imaging quality. If the zoom lens deviates during the movement, the light refraction path will change, thereby affecting the clarity and accuracy of the imaging. The guiding effect of the slide bar (4) can effectively maintain the stability of the optical path, so that the incident light can accurately zoom through the zoom lens assembly, thereby improving the optical performance of the periscope lens.

[0051] In order to make the movement of the zoom lens more stable and smooth, in some embodiments, the carrier is arranged in the base (16); a ball (15) is arranged between the carrier and the base (16) to assist the carrier in sliding; a sliding groove parallel to the optical path is opened on the edge of the carrier; the sliding groove and the inner corner of the base (16) form a sliding channel for accommodating the ball (15).

[0052] The presence of the ball bearings (15) converts the original sliding friction between the carrier and the base (16) into rolling friction. Compared with sliding friction, rolling friction has a smaller friction force. When the carrier moves in the base (16), the ball bearings (15) roll in the sliding channel, greatly reducing the resistance encountered by the carrier during movement. This enables the carrier to slide more easily in the base (16), thereby ensuring the stability and smoothness of the movement of the zoom lens and avoiding the phenomenon of movement jamming caused by excessive friction.

[0053] The sliding channel limits the ball (15) in four directions, namely, up, down, left, and right, and only allows the ball (15) to move in the front and back directions. Since the carrier and the ball (15) cooperate with each other, the movement direction of the ball (15) determines the movement direction of the carrier. Through this precise limit design, the carrier can only slide in the base (16) along the direction parallel to the optical path, effectively ensuring the directionality of the movement of the zoom lens, avoiding the deviation or shaking of the carrier during the movement, and ensuring the stability of the optical system.

[0054] Due to the low rolling friction of the ball (15) and the effective positioning of the sliding channel on it, the wear between the carrier and the base (16) is greatly reduced, which not only prolongs the service life of the carrier and the base (16), but also reduces the probability of system failure caused by component wear.

[0055] In some embodiments, the balls (15) are symmetrically arranged at the bottom of the carrier so that the forces on both sides are balanced to avoid unstable movement of the carrier.

[0056] In addition, in order to further prevent the carrier from floating during movement, adsorption components that can be adsorbed to each other are provided on the carrier and the base (16), so that the carrier is adsorbed to the base (16) during movement. The adsorption component includes a permanent magnet (13) and an adsorption steel sheet (14), and the specific installation method is: the permanent magnet (13) is provided on the carrier, and the adsorption steel sheet (14) is provided on the base (16); or, the permanent magnet (13) is provided on the base (16), and the adsorption steel sheet (14) is provided on the carrier. In this embodiment, the permanent magnet (13) is embedded in the bottom of the carrier, and the adsorption steel sheet (14) is attached to the inner bottom surface of the base (16), and the two are directly opposite to each other so that the adsorption force is the strongest.

[0057] In order to facilitate control, a HALL signal sensor (18) is also included which is arranged on the flexible circuit board (17); the HALL signal sensor (18) can determine the position of the carrier by inducing the permanent magnet (13).

[0058] The permanent magnet (13) and the HALL signal sensor (18) work through magnetic field induction, which is a non-contact detection method. This method avoids wear and error caused by mechanical contact, improves the accuracy and reliability of detection, and also prolongs the service life of the components.

[0059] The HALL signal sensor (18) can sense the magnetic field changes of the permanent magnet (13) in real time, thereby accurately determining the position of the carrier. The control system can accurately control the movement of the carrier based on the position information, and achieve accurate adjustment of the zoom lens position, making it convenient for users to perform various zoom operations and meet the needs of different shooting scenes.

[0060] Due to the high precision of the HALL effect, the HALL signal sensor (18) can accurately feed back the position information of the carrier to the control system, usually achieving a high positioning accuracy, generally accurate to the millimeter or even sub-millimeter level, thereby achieving precise control of the zoom lens position and ensuring imaging quality.

[0061] In the present invention, the permanent magnet (13) not only serves as a component for cooperating with the adsorption steel sheet (14) for adsorption, but also serves as a component for cooperating with the HALL signal sensor (18) for position sensing, thus serving two purposes.

[0062] like Figure 7 , Figure 8 As shown, the piezoelectric component of the present invention comprises a piezoelectric element (111), wherein a counterweight (112) is disposed at one end of the piezoelectric element (111) and a ceramic rod (113) as an output end is disposed at the other end. Figure 7 As shown, it also includes a bracket (116) for mounting the piezoelectric component, the bracket (116) is provided with a mounting groove for accommodating the piezoelectric element (111) and the counterweight (112) and a support plate (117) for supporting the ceramic rod (113), and the support plate (117) is provided with a U-shaped groove that matches the ceramic rod (113). In some embodiments, the support plate (117) is arranged at both ends of the ceramic rod (113) to support the ceramic rod (113).

[0063] The support plate (117) cooperates with the U-shaped groove to limit the ceramic rod (113) in different directions, preventing it from bending, twisting, and other situations that are not conducive to energy transmission during operation, thereby ensuring that the ceramic rod (113) can accurately transmit the driving force of the piezoelectric element (111) to the clip and the carrier.

[0064] In addition, since the ceramic rod (113) and the piezoelectric element (111) are fixed by bonding during the assembly process, the U-shaped groove provides reliable support and fixed position for the ceramic rod (113) during the bonding process between the ceramic rod (113) and the piezoelectric element (111). This enables the ceramic rod (113) to maintain a correct position and posture during bonding, thereby preventing the ceramic rod (113) from being offset due to human operation or other factors, thereby affecting the final assembly accuracy and working performance.

[0065] In order to facilitate assembly, a notch is provided at the bottom of the bracket (116) for the welding terminal (115) to pass through, and the notch is a funnel-shaped structure that is wide outside and narrow inside. The flexible circuit board (17) is bonded to the base (16) (including but not limited to flat bonding and side bonding after bending), and the welding terminal (115) on the flexible circuit board (17) passes through the notch and is welded to the flexible circuit board (17) to achieve circuit conduction, which can reduce costs, increase efficiency, and have high space utilization.

[0066] It is foreseeable that, in order to shield the device, a housing (1) that can be snapped together with the base (16) is also included.

[0067] When in use, the prism assembly refracts light to the zoom lens assembly. Two sets of driving mechanisms drive two zoom lenses respectively. The piezoelectric component in the driving mechanism works, and drives the carrier to move along the slide bar (4) parallel to the optical path through the clamp, so as to realize the forward and backward movement of the zoom lens along the optical path. At the same time, the carrier slides in the base (16) with the assistance of the ball (15). The ball (15) is symmetrically distributed at the bottom of the carrier and moves in the sliding channel surrounded by the inner corner of the slide groove and the base (16), so as to ensure the force balance and movement directionality on both sides of the carrier. The carrier and the base (16) are mutually adsorbed by the adsorption component to prevent the carrier from floating when moving.

[0068] The carrier is embedded with a permanent magnet (13), and a HALL signal sensor (18) on a flexible circuit board (17) senses the permanent magnet (13) to determine the position of the carrier, and feeds back the position information to the control system, so as to facilitate accurate control of the position of the zoom lens. During the zooming process, the two zoom lenses simultaneously move closer to or farther from each other, which speeds up the zooming speed, and finally achieves accurate zooming of the incident light to meet the imaging requirements.

[0069] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0070] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A piezoelectric driven zoom periscope lens, characterized in that: It includes a zoom lens assembly and a prism assembly for refracting incident light onto the zoom lens assembly; the zoom lens assembly includes two zoom lenses arranged along the front-to-back direction of the optical path, at least one of the two zoom lenses can move forward and backward along the optical path so as to change the distance between the two lenses to achieve zooming; it also includes a driving mechanism for driving the zoom lens to move; the driving mechanism includes a carrier for carrying the zoom lens, a piezoelectric assembly for driving the carrier to move, and a clamp fixed on the carrier; the clamp clamps the output end of the piezoelectric assembly so that the output end drives the carrier to move; the clamp is formed by bending an elastic sheet, and includes a connecting end for connecting to the carrier and a clamping end for clamping the output end of the piezoelectric assembly.

2. The piezoelectric driven zoom periscope lens according to claim 2, characterized in that: The clip connecting end is bent 90° to form a connecting part I, which is then bent 90° to form a first clamping part parallel to the connecting end; the first clamping part is bent 90° to form a connecting part II parallel to the connecting part I; the connecting part II is bent 90° to form a supporting part parallel to the first clamping part; the supporting part is bent 90° to form a connecting part III parallel to the connecting part II; the connecting part III is bent 90° to form a second clamping part parallel to the first clamping part; the first clamping part and the second clamping part are used as clamping ends to clamp the output end of the piezoelectric component.

3. The piezoelectric driven zoom periscope lens according to claim 1, characterized in that: The driving mechanism further comprises a guide member arranged parallel to the optical path, and the carrier can move along the guide member.

4. A piezoelectric driven zoom periscope lens according to claim 1, characterized in that: The piezoelectric component comprises a piezoelectric element, one end of which is provided with a counterweight and the other end of which is provided with a ceramic rod as an output end.

5. The piezoelectric driven zoom periscope lens according to claim 4, characterized in that: It also includes a bracket for installing the piezoelectric component, the bracket is provided with a mounting groove for accommodating the piezoelectric element and the counterweight and a support plate for supporting the ceramic rod, and the support plate is provided with a U-shaped groove matching the ceramic rod.

6. The piezoelectric driven zoom periscope lens according to claim 5, characterized in that: A slot for the welding terminal to pass through is formed at the bottom of the bracket, and the slot is a funnel-shaped structure that is wide outside and narrow inside.

7. A piezoelectric driven zoom periscope lens according to claim 1, characterized in that: The carrier is arranged in the base; a ball is arranged between the carrier and the base to assist the carrier in sliding; a slide groove parallel to the optical path is opened on the edge of the carrier; the slide groove and the inner corner of the base form a sliding channel for accommodating the ball.

8. The piezoelectric driven zoom periscope lens according to claim 1, characterized in that: The carrier and the base are provided with adsorption components that can be adsorbed to each other; the adsorption components include a permanent magnet and an adsorption steel sheet, the permanent magnet is provided on the carrier, and the adsorption steel sheet is provided on the base.

9. The piezoelectric driven zoom periscope lens according to claim 8, characterized in that: It also includes a HALL signal sensor disposed on the flexible circuit board; the HALL signal sensor can determine the position of the carrier by sensing the permanent magnet.

10. A piezoelectric driven zoom periscope lens according to claim 1, characterized in that: Both zoom lenses can move along the optical path, and the driving mechanism is composed of two sets for driving the two zoom lenses respectively.

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