CN216561165U - Optical lens zooming mechanism - Google Patents
Optical lens zooming mechanism Download PDFInfo
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- CN216561165U CN216561165U CN202122940753.9U CN202122940753U CN216561165U CN 216561165 U CN216561165 U CN 216561165U CN 202122940753 U CN202122940753 U CN 202122940753U CN 216561165 U CN216561165 U CN 216561165U
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- linear
- linear guide
- main body
- optical lens
- guide rail
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Abstract
The utility model provides an optical lens zooming mechanism which comprises a main body support, a linear motor, a linear guide rail, a mirror bracket assembly and a front plate, wherein the linear motor, the linear guide rail and the mirror bracket assembly are arranged in the main body support, the linear motor and the linear guide rail are respectively fixed on the main body support, the secondary stage of the linear motor is fixedly connected with the mirror bracket assembly, the mirror bracket assembly is positioned on the linear guide rail, a lens is arranged on the mirror bracket assembly, and the front plate is fixed at the front end of the main body support. The lens adjusting device drives the lens frame assembly to move back and forth through the linear motor with higher precision, then drives the lens to move back and forth, and is assisted with the guide of the linear guide rail, so that the adjusting error caused by the installation and abrasion of a mechanical system is effectively eliminated, and the lens is ensured to have higher adjusting precision and positioning precision.
Description
Technical Field
The utility model belongs to the field of optical imaging instruments, and particularly relates to an optical lens zooming mechanism.
Background
Zoom optical lenses have wide application in optical instruments. The zoom lens has different requirements on the zoom form and the zoom precision according to different use occasions, but in any mode, smaller mechanical system error, unchanged relative position and angle of the lens and higher repetition precision and positioning precision are required.
The currently common focusing structures mainly comprise three types, namely, a thread transmission structure, a gear pair combined spiral guide groove and a ball screw. The thread transmission clearance is large, and the lens can rotate, so that the practicability is poor; the gear pair has an installation gap, the guide groove and the guide part are abraded in the use process, and both of the guide groove and the guide part can finally cause a return stroke difference of the focusing mechanism; the ball screw has higher precision, but occupies larger space, and is not suitable for the volume requirement of miniaturized equipment.
Disclosure of Invention
Aiming at the technical problems in the prior art, the utility model provides an optical lens zooming mechanism, which drives a lens frame assembly to move back and forth through a linear motor with higher precision, then drives a lens to move back and forth, and is guided by a linear guide rail, thereby effectively eliminating the adjustment error caused by the installation and abrasion of a mechanical system and ensuring that the lens has higher adjustment precision and positioning precision.
The technical scheme adopted by the utility model is as follows: the utility model provides an optical lens zooming mechanism, includes main part support, linear electric motor, linear guide, mirror holder subassembly and front bezel, be provided with linear electric motor, linear guide and mirror holder subassembly in the main part support, linear electric motor, linear guide are fixed in respectively on the main part support, linear electric motor's secondary and mirror holder subassembly fixed connection, the mirror holder subassembly is located linear guide, install the lens on the mirror holder subassembly, the front bezel is fixed main part support front end.
Furthermore, the number of the linear guide rails is two, the two linear guide rails are parallel to each other and are positioned on two sides of the lens.
Furthermore, the front end of the linear guide rail is fixed on the front plate through a screw, and the rear end of the linear guide rail is fixed on the main body bracket through a screw.
Further, the linear guide rail is parallel to the secondary stage of the linear motor.
Furthermore, a wire outlet hole is formed in the main body support, and a lead of the linear motor penetrates through the wire outlet hole.
Furthermore, a partition plate is arranged in the main body support, a cover plate is fixed on the main body support, the linear motor is located between the partition plate and the cover plate, and a motor pressing plate is arranged between the linear motor and the cover plate.
Furthermore, the rear end of the main body support is provided with a rear lens.
Further, a sealing ring is arranged between the main body support and the front plate.
Furthermore, a window sheet is arranged on the front plate.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model installs the mirror bracket assembly on the linear guide rail, and utilizes the linear motor to drive the mirror bracket assembly to move along the linear guide rail, has simple structure, avoids the return stroke difference caused by the installation gap, has few intermediate processes and few links causing errors, has the precision mainly depending on the linear motor, and can ensure the better repetition precision and positioning precision of the optical structure.
2. According to the utility model, the linear motor, the linear guide rail and the mirror bracket assembly are all arranged in the main body bracket, and the movement of the mirror bracket assembly is controlled only by adopting the linear guide rail and the linear motor, so that the volume of the structure is reduced to the maximum extent; and the installation mode of structure can realize optical system self waterproof dustproof, has higher environmental suitability. The utility model designs the clapboard and the cover plate to separate the components such as the linear motor, the mirror bracket assembly and the like, and can be used in the occasions with harsh environments.
3. The utility model has compact structure and small volume, and can be applied to equipment with strict volume requirement.
Drawings
FIG. 1 is an exploded view of an embodiment of the present invention;
FIG. 2 is a perspective view of an embodiment of the present invention;
FIG. 3 is a cross-sectional view of an embodiment of the present invention.
In the figure, 1-a main body bracket, 101-an outlet hole, 102-a partition plate, 2-a linear motor, 3-a motor pressure plate, 4-a linear guide rail, 5-a spectacle frame assembly, 501-a lens, 6-a sealing ring, 7-a front plate, 8-a window sheet, 9-a rear lens, 10-a cover plate and 11-a screw.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
An embodiment of the present invention provides an optical lens zooming mechanism, as shown in fig. 1 to 3, which includes a main body bracket 1, a linear motor 2, a linear guide 4, a frame assembly 5, and a front plate 7. The rear end of the main body bracket 1 is provided with a rear lens 9. The front end of the main body bracket 1 is fixed with a front plate 7. A sealing ring 6 is arranged between the main body support 1 and the front plate 7. And a window sheet 8 is arranged on the front plate 7. The main body support 1 is internally provided with a linear motor 2, a linear guide rail 4 and a mirror bracket assembly 5. The lens 501 is mounted on the frame assembly 5, and the frame assembly 5 is located on the two linear guide rails 4. The two linear guide rails 4 are parallel to each other and located on both sides of the lens 501. The front end of the linear guide rail 4 is fixed on the front plate 7 through a screw 11, and the rear end is fixed on the main body bracket 1 through a screw 11. The secondary stage of the linear motor 2 is fixedly connected with the mirror bracket assembly 5, and the secondary stage of the linear motor 2 is parallel to the linear guide rail 4. The motor is characterized in that a partition plate 102 is arranged in the main body support 1, a cover plate 10 is fixed on the main body support 1, the linear motor 2 is located between the partition plate 102 and the cover plate 10, and a motor pressing plate 3 is arranged between the linear motor 2 and the cover plate 10. The partition plate 102 separates the linear guide 4 and the frame assembly 5 from the linear motor 2, and the secondary stage of the linear motor 2 penetrates the partition plate 102. The main body support 1 is provided with a wire outlet hole 101, and a lead of the linear motor 2 penetrates through the wire outlet hole 101.
In the embodiment, the secondary stage of the linear motor 2 is controlled to move back and forth by inputting an electrical signal, so as to drive the frame assembly 5 connected with the secondary stage to move back and forth along the linear guide rail 4, and adjust the distance between the lens 501 and the rear lens 9.
The assembly process of this embodiment:
firstly, the rear lens 9 is stuck to the main body bracket 1, the linear guide 4 and the mirror bracket assembly 5 are assembled and then are integrally installed in the main body bracket 1, the screw 11 is installed, the linear guide 4 is connected with the main body bracket 1, and the screw 11 is not required to be tightened.
Secondly, the linear motor 2 is installed in a square groove formed by the partition plate 102 below the main body support 1, and the secondary stage of the linear motor 2 passes through the partition plate 102, so that the mirror holder assembly 5 and the secondary stage of the linear motor 2 are fixed by screws from the front.
Thirdly, embedding the sealing ring 6 into a groove on the side surface of the front plate 7, adhering the window sheet 8 glue to the corresponding position of the front plate 7, embedding the assembled front plate 7 into the front end of the main body bracket 1, and fixing the front plate by six screws 11; two screws 11 at the middle position correspond to the threaded holes on the end surface of the linear guide rail 4.
And fourthly, after the position of the mirror bracket assembly 5 which slides smoothly is found by controlling the linear motor 2 to move back and forth, locking the screw 11, and fixing the linear guide rail 4 and the main body bracket 1. And installing a motor pressing plate 3, leading out a lead at the tail part of the linear motor 2 from the wire outlet hole 101, installing a cover plate 10, and gluing and sealing the wire outlet hole 101 and the periphery outside the cover plate 10.
And fifthly, an external signal is given to the linear motor 2 to control the secondary of the linear motor 2 to accurately move back and forth, so that the lens bracket assembly 5 is further driven to move, and the focusing position of the optical system is adjusted.
The present invention has been described in detail with reference to the embodiments, but the description is only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The scope of the utility model is defined by the claims. The technical solutions of the present invention or those skilled in the art, based on the teaching of the technical solutions of the present invention, should be considered to be within the scope of the present invention, and all equivalent changes and modifications made within the scope of the present invention or equivalent technical solutions designed to achieve the above technical effects are also within the scope of the present invention.
Claims (9)
1. An optical lens zooming mechanism, characterized in that: including main part support, linear electric motor, linear guide, mirror holder subassembly and front bezel, be provided with linear electric motor, linear guide and mirror holder subassembly in the main part support, linear electric motor, linear guide are fixed in respectively on the main part support, linear electric motor's secondary and mirror holder subassembly fixed connection, the mirror holder subassembly is located linear guide, install the lens on the mirror holder subassembly, the front bezel is fixed main part support front end.
2. The optical lens zoom mechanism of claim 1, wherein: the number of the linear guide rails is two, the linear guide rails are parallel to each other and located on two sides of the lens.
3. An optical lens zoom mechanism according to claim 1 or 2, characterized in that: the front end of the linear guide rail is fixed on the front plate through a screw, and the rear end of the linear guide rail is fixed on the main body bracket through a screw.
4. An optical lens zoom mechanism according to claim 1 or 2, characterized in that: the linear guide rail is parallel to the secondary of the linear motor.
5. An optical lens zoom mechanism as claimed in claim 1, wherein: the main body support is provided with a wire outlet hole, and a lead of the linear motor penetrates through the wire outlet hole.
6. An optical lens zoom mechanism as claimed in claim 1, wherein: the motor support is characterized in that a partition plate is arranged in the main body support, a cover plate is fixed on the main body support, the linear motor is located between the partition plate and the cover plate, and a motor pressing plate is arranged between the linear motor and the cover plate.
7. An optical lens zoom mechanism as claimed in claim 1, wherein: the rear end of the main body support is provided with a rear lens.
8. The optical lens zoom mechanism of claim 1, wherein: and a sealing ring is arranged between the main body support and the front plate.
9. The optical lens zoom mechanism of claim 1, wherein: and a window sheet is arranged on the front plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122940753.9U CN216561165U (en) | 2021-11-26 | 2021-11-26 | Optical lens zooming mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122940753.9U CN216561165U (en) | 2021-11-26 | 2021-11-26 | Optical lens zooming mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216561165U true CN216561165U (en) | 2022-05-17 |
Family
ID=81579080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122940753.9U Active CN216561165U (en) | 2021-11-26 | 2021-11-26 | Optical lens zooming mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216561165U (en) |
-
2021
- 2021-11-26 CN CN202122940753.9U patent/CN216561165U/en active Active
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