Ultrasonic motor control optical lens structure

Abstract

The utility model is suitable for the technical field of ultrasonic motors, and provides an ultrasonic motor control optical lens structure, which comprises an ultrasonic motor assembly with an annular hollow structure and a lens assembly arranged in the ultrasonic motor assembly, and a stator assembly, a rotor assembly and a barrier assembly are arranged in the ultrasonic motor assembly. The stator assembly and the rotor assembly move relatively, the barrier assembly is arranged around the rotor assembly and is electrically connected with a circuit board, the lens assembly is provided with a focusing structure, and the rotor assembly is detachably and fixedly connected with the focusing structure; the rotor assembly is connected with the focusing structure of the lens assembly, when the focusing structure rotates and focuses, the rotor assembly and the stator assembly move relatively, the corresponding voltage of the contact on the resistance grid assembly changes, and feedback information of the ultrasonic motor assembly is formed after the feedback information is read by the circuit board. Accurate displacement or angle control of the lens assembly is achieved, and therefore accurate focusing is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrasonic motors, and in particular relates to an ultrasonic motor controlled optical lens structure. Background Art

[0002] Optical lenses are essential components in machine vision systems, which directly affect the quality of imaging and the implementation and effect of algorithms. Due to the space and size limitations of optical lenses, the focus drive motor of general optical lenses does not have closed-loop feedback. Instead, it determines whether the motor needs to be started or stopped based on the image clarity of the photosensitive chip. This requires running complex software algorithms to achieve this, which will cause focus delays and jitters, and may also produce large errors.

[0003] Therefore, the prior art has defects. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and provide an ultrasonic motor controlled optical lens structure.

[0005] The utility model is implemented as follows: an ultrasonic motor controls an optical lens structure, comprising an ultrasonic motor component in a ring-shaped hollow structure and a lens component arranged inside the ultrasonic motor component, wherein a stator component, a rotor component and a barrier grid component are arranged inside the ultrasonic motor component, wherein the stator component and the rotor component move relative to each other, the barrier grid component is arranged around the rotor component, the barrier grid component is electrically connected to a circuit board, the lens component has a focusing structure, and the rotor component is detachably and fixedly connected to the focusing structure.

[0006] Furthermore, the stator assembly and the rotor assembly are both provided with through holes adapted to the structural periphery of the lens assembly, so that the stator assembly and the rotor assembly are both annular hollow structures, and the lens assembly is connected to the rotor assembly through the through holes.

[0007] Furthermore, the rotor assembly and the focusing structure are detachably connected via a plurality of first screws.

[0008] Furthermore, the ultrasonic motor assembly includes a detachably connected outer shell and a back cover, and the stator assembly, the rotor assembly, the barrier grid assembly and the lens assembly are all arranged in the outer shell, and the stator assembly, the rotor assembly, the barrier grid assembly and the lens assembly are all coaxially arranged with the outer shell.

[0009] Furthermore, the housing is provided with a mounting opening for mounting the circuit board, and a cover plate is detachably connected to the mounting opening.

[0010] The utility model provides an ultrasonic motor controlled optical lens structure. The ultrasonic motor component adopts an annular hollow structure, which can adapt to the outer structure of the lens component and is also conducive to being integrated with the lens component as a whole. The rotor component is connected to the focusing structure of the lens component. When the focusing structure is rotated for focusing, the rotor component and the stator component move relative to each other, and the corresponding voltage of the contacts on the barrier component will change. After being read by the circuit board, feedback information of the ultrasonic motor component is formed, so as to realize precise displacement or angle control of the lens component, thereby realizing precise focusing and avoiding the disadvantages of focus delay and jitter in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] The following drawings are only intended to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0013] Figure 1 It is a structural schematic diagram provided by the utility model.

[0014] Figure 2 It is a structural explosion diagram provided by the utility model.

[0015] Explanation of the accompanying drawings: 1. Ultrasonic motor assembly; 11. Stator assembly; 12. Rotor assembly; 13. Barrier grid assembly; 14. Circuit board; 15. First screw; 16. Housing; 17. Back cover; 18. Mounting port; 19. Cover plate; 2. Lens assembly. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0017] See also Figure 1-Figure 2 , which is an ultrasonic motor controlled optical lens structure disclosed in the utility model, includes an ultrasonic motor component 1 with a ring-shaped hollow structure and a lens component 2 arranged inside the ultrasonic motor component 1. The lens component 2 has a focusing structure, so that the ultrasonic motor component 1 and the lens component 2 are integrated as a whole, which is beneficial for the ultrasonic motor component 1 to control the focusing structure.

[0018] The ultrasonic motor assembly 1 includes but is not limited to a stator assembly 11, a rotor assembly 12 and a barrier assembly 13. The specific internal structure of the ultrasonic motor assembly 1 is a prior art, and other components in the ultrasonic motor assembly 1 are not described in detail in this embodiment. The stator assembly 11 and the rotor assembly 12 move relative to each other, the barrier assembly 13 is arranged around the rotor assembly 12, and the barrier assembly 13 is electrically connected to a circuit board 14. The rotor assembly 12 is detachably fixedly connected to the focusing structure, and the rotor assembly 12 and the focusing structure can be detachably connected by a first screw 15. The installation method is simple and easy to operate.

[0019] When the focusing structure of the lens assembly 2 is performing focusing operation, the ultrasonic motor assembly 1 drives the rotor assembly 12 and the stator assembly 11 to move relative to each other. At this time, the rotor assembly 12 drives the focusing structure to rotate. At the same time, the corresponding voltages of the contacts on the rotor assembly 12 and the barrier assembly 13 will change, and feedback information of the ultrasonic motor assembly 1 is formed after being read by the circuit board 14. The feedback information includes but is not limited to the relative displacement and relative angle between the rotor assembly 12 and the stator assembly 11, that is, precise displacement or angle control of the focusing structure in the lens assembly 2 can be achieved, thereby achieving precise focusing. Moreover, since the motion characteristics of the ultrasonic motor assembly 1 have high response and nanometer-level high precision, the focusing delay and jitter phenomena in the prior art can be eliminated.

[0020] Furthermore, the ultrasonic motor assembly 1 includes a detachably connected shell 16 and a back cover 17, the stator assembly 11, the rotor assembly 12, the barrier assembly 13 and the lens assembly 2 are all arranged in the shell 16, the stator assembly 11, the rotor assembly 12, the barrier assembly 13 and the lens assembly 2 are all coaxially arranged with the shell 16, and at the same time, the stator assembly 11 and the rotor assembly 12 are both provided with a through hole adapted to the structural periphery of the lens assembly 2, so that the stator assembly 11 and the rotor assembly 12 are both annular hollow structures, and the lens assembly 2 is connected to the rotor assembly 12 through the through hole, so that the structure of the entire optical lens is more compact, the overall volume is greatly reduced, and it is more portable. At the same time, in order to protect the circuit board 14 and avoid affecting the feedback result of the cooperation between the barrier assembly 13 and the circuit board 14, the housing 16 is also provided with a mounting port 18 for mounting the circuit board 14, and a cover plate 19 is detachably connected to the mounting port 18. The connection between the cover plate 19 and the mounting port 18 is preferably connected by a plurality of second screws, which facilitates the loading and unloading of the cover plate 19 and the mounting port 18 and facilitates the subsequent detection operation of the circuit board 14.

[0021] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultrasonic motor controlled optical lens structure, characterized in that: The invention comprises an ultrasonic motor assembly (1) having an annular hollow structure and a lens assembly (2) arranged inside the ultrasonic motor assembly (1); a stator assembly (11), a rotor assembly (12) and a barrier assembly (13) are arranged inside the ultrasonic motor assembly (1); the stator assembly (11) and the rotor assembly (12) move relative to each other; the barrier assembly (13) is arranged around the rotor assembly (12); the barrier assembly (13) is electrically connected to a circuit board (14); the lens assembly (2) has a focusing structure; the rotor assembly (12) is detachably fixedly connected to the focusing structure.

2. The ultrasonic motor controlled optical lens structure according to claim 1, characterized in that: The stator assembly (11) and the rotor assembly (12) are both provided with through holes that are compatible with the structural periphery of the lens assembly (2), so that the stator assembly (11) and the rotor assembly (12) are both annular hollow structures, and the lens assembly (2) is connected to the rotor assembly (12) through the through holes.

3. The ultrasonic motor controlled optical lens structure according to claim 1, characterized in that: The rotor assembly (12) and the focusing structure are detachably connected via a plurality of first screws (15).

4. The ultrasonic motor controlled optical lens structure according to claim 1, characterized in that: The ultrasonic motor assembly (1) comprises a detachably connected housing (16) and a rear cover (17); the stator assembly (11), the rotor assembly (12), the barrier assembly (13) and the lens assembly (2) are all arranged in the housing (16); and the stator assembly (11), the rotor assembly (12), the barrier assembly (13) and the lens assembly (2) are all coaxially arranged with the housing (16).

5. The ultrasonic motor controlled optical lens structure according to claim 4, characterized in that: The housing (16) is also provided with a mounting opening (18) for mounting the circuit board (14), and a cover plate (19) is detachably connected to the mounting opening (18).

Images