CN219039462U - Lens module capable of optical zooming and mechanical focusing - Google Patents
Lens module capable of optical zooming and mechanical focusing Download PDFInfo
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- CN219039462U CN219039462U CN202320051861.7U CN202320051861U CN219039462U CN 219039462 U CN219039462 U CN 219039462U CN 202320051861 U CN202320051861 U CN 202320051861U CN 219039462 U CN219039462 U CN 219039462U
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Abstract
The utility model discloses a lens module capable of optical zooming and mechanical focusing, which relates to the technical field of optical lenses, wherein a lens is connected with a lens seat in a threaded manner, and when the lens and the lens seat rotate relatively, the lens moves axially relative to the lens seat, and the process is mechanical focusing; the inner lens is arranged on the lens seat, and the periphery of the lens seat contacts the inner wall of the lens; the zoom ring is rotationally sleeved on the periphery of the lens, a transmission channel is arranged on the side wall of the lens, and the lens seat can be driven to axially move through the transmission channel when the zoom ring rotates, so that the process is optical zooming. The lens module can realize the dual functions of optical zooming and mechanical focusing.
Description
Technical Field
The utility model relates to the technical field of optical lenses, in particular to a lens module capable of optical zooming and mechanical focusing.
Background
An ideal convex lens imaging formula: 1/u+1/v=1/f, where u is the object distance, v is the image distance, and f is the focal length; the zooming refers to changing the focal length f of the lens, that is, changing the angle of view, and only the focal length of the zoom lens can be changed, and the focal length of the fixed focus lens is fixed. Focusing or focusing refers to changing the image distance v, that is, changing the distance from the optical center of the lens to the plane of the base plate. Focusing focus, which is focal point focus, means that the imaging formula 1/u+1/v=1/f is satisfied by "focusing", i.e., changing the image distance v, so that a clear image is formed on the negative film. The principle of zooming is to add a group of movable lenses into the lens of the lens; the focusing is to adjust the virtual and real of the image, i.e. change the distance between the lens and the imaging surface, so as to achieve the purpose of making the image clear. Both nouns carry a focus word and have completely different meanings.
In the existing focusing lens structure, only one of the functions of mechanical focusing or optical zooming is generally performed. It is a technical problem that needs to be solved at present for a person skilled in the art how to make a lens possess both optical zoom and mechanical focusing functions.
Disclosure of Invention
The utility model provides a lens module capable of realizing optical zooming and mechanical focusing, which comprises the following specific schemes:
a lens module capable of optical zooming and mechanical focusing comprises a lens, a lens seat, a zooming ring and a lens seat;
the lens is in threaded connection with the lens seat so that the lens moves axially relative to the lens seat when the lens and the lens seat rotate relatively;
the lens seat is arranged in the lens and used for installing an inner lens, and the periphery of the lens seat contacts with the inner wall of the lens;
the zoom ring is rotationally sleeved on the periphery of the lens, a transmission channel is arranged on the side wall of the lens, mutual contact exists between the zoom ring and the lens seat through the transmission channel, and the lens seat can be driven to axially move when the zoom ring rotates.
Optionally, the drive passageway is the rectangular shape through-hole that the slope set up, the inner wall of varifocal ring sets up the drive groove along the axial, the driving piece that the periphery of lens seat set up passes the drive passageway stretches into the drive groove, the drive groove is right the driving piece that the lens seat periphery set up provides the power of circumference motion.
Optionally, the drive passageway is the rectangular shape through-hole of parallel axial setting, the inner wall of zoom ring sets up the internal thread, the driving piece that the periphery of lens seat set up passes the drive passageway stretches into the internal thread, the internal thread is right the driving piece that the lens seat periphery set up provides axial motion's power.
Optionally, the driving block and the transmission channel arranged on the periphery of the lens seat are respectively provided with two or more.
Optionally, a focusing ring for increasing friction is arranged on the outer surface of the lens;
the zoom ring is arranged below the focusing ring along the axis direction, and the outside diameter of the zoom ring and the outside diameter of the focusing ring have a fall.
Optionally, a limiting block is disposed at an end of the lens extending into the lens holder, and the limiting block can cooperate with the lens holder to limit a maximum size of the lens extending outwards.
Optionally, an external thread is disposed on an outer surface of the lens, an internal thread is disposed on the lens holder, and the lens extends into the lens holder.
Optionally, a sealing ring is disposed between the lens and the lens holder, and the sealing ring is axially disposed below the threaded mating position of the lens and the lens holder.
Optionally, the lens comprises a first section with a larger diameter and a second section with a smaller diameter, and the second section is provided with external threads;
the lens seat is provided with a shade which surrounds the lower end of the periphery of the first section to form a shielding.
Optionally, the limiting block is a screw screwed on the end of the lens.
The utility model provides a lens module capable of optical zooming and mechanical focusing, wherein a lens is connected to a lens seat in a threaded manner, and when the lens and the lens seat rotate relatively, the lens moves axially relative to the lens seat, and the process is mechanical focusing; the inner lens is arranged on the lens seat, and the periphery of the lens seat contacts the inner wall of the lens; the zoom ring is rotationally sleeved on the periphery of the lens, a transmission channel is arranged on the side wall of the lens, and the lens seat can be driven to axially move through the transmission channel when the zoom ring rotates, so that the process is optical zooming. The lens module can realize the dual functions of optical zooming and mechanical focusing.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an isometric view of the overall structure of a lens module with optical zoom and mechanical focus adjustment according to the present utility model;
FIG. 2 is a cross-sectional view showing the overall structure of a lens module capable of optical zooming and mechanical focusing according to the present utility model;
FIG. 3 is an isometric view of a lens;
FIG. 4 is an isometric view of a zoom ring;
fig. 5 is an isometric view of a lens mount.
The drawings include:
Detailed Description
The utility model aims at providing a lens module capable of realizing optical zooming and mechanical focusing, which can realize the dual functions of optical zooming and mechanical focusing.
In order to make those skilled in the art better understand the technical solutions of the present utility model, the following describes the lens module capable of optical zooming and mechanical focusing in detail with reference to the drawings and the specific embodiments.
Referring to fig. 1 and 2, the lens module capable of optical zooming and mechanical focusing provided by the utility model comprises a lens 1, a lens base 2, a zoom ring 3, a lens base 4 and other structures; the lens 1 is a separate component comprising a plurality of lenses which are mounted in a barrel to form a unitary body. The lens mount 2 serves as a support for mounting to other components to provide support for the lens 1.
The lens 1 is in threaded connection with the lens holder 2, and the lens 1 can rotate relative to the lens holder 2 around the axial direction, so that the lens 1 moves relative to the lens holder 2 along the axial direction when the lens 1 and the lens holder 2 rotate relatively; the lens 1 and the lens holder 2 are in threaded fit with each other to generate axial displacement when rotating relatively, and the process is a mechanical focusing process.
The lens holder 4 is disposed inside the lens 1, and the lens holder 4 is used for mounting the inner lenses 4.1, and it should be noted that one or more lenses (isolated from the outside) inside the lens 1 may be disposed, and the structure shown in the drawings of the present utility model does not exclude the structure that a greater number of inner lenses are mounted on the lens holder 4. The lens seat 4 and the inner lens 4.1 are connected into a whole, the outer periphery of the lens seat 4 contacts the inner wall of the lens 1, a certain damping is provided between the outer periphery of the lens seat 4 and the inner wall of the lens 1, but the lens seat 4 can move relative to the inner wall of the lens 1.
The zoom ring 3 is a cylindrical ring structure, the zoom ring 3 is rotationally sleeved on the periphery of the lens 1, and as shown in fig. 3, an annular groove for installing the zoom ring 3 is arranged on the side wall of the lens 1, the height of the annular groove is basically equal to that of the zoom ring 3, the zoom ring 3 can be just contained in the annular groove, the axial position of the zoom ring 3 is not adjustable, but the zoom ring 3 can rotate along the circumferential direction relative to the lens 1.
With reference to fig. 2 and 3, a transmission channel 1.1 is arranged on the side wall of the lens 1, the transmission channel 1.1 is an open pore structure penetrating through the side wall of the lens 1, mutual contact exists between the zoom ring 3 and the lens seat 4 by utilizing the transmission channel 1.1, acting force can be transmitted between the zoom ring 3 and the lens seat 4, the lens seat 4 can be driven to axially move through the transmission channel 1.1 when the zoom ring 3 rotates around an axis, and the lens seat 4 synchronously drives the inner lens 4.1 to axially move in the lens 1 relative to the lens 1, so that the inner lens 4.1 axially moves to realize optical zooming.
The lens module realizes a mechanical focusing process by axially moving the whole lens 1 relative to the lens base 2, and realizes an optical zooming process by driving the inner lens 4.1 to synchronously axially move relative to the lens 1 through the lens base 4. The lens module has two functions of mechanical focusing and optical zooming.
Referring to fig. 3, the transmission channel 1.1 is a strip-shaped through hole which is obliquely arranged, the transmission channel 1.1 is arranged to penetrate along the radial direction of the lens 1, and the length direction of the transmission channel 1.1 is obliquely arranged, that is, the length direction of the transmission channel 1.1 has a component in the circumferential direction and a component in the axial direction.
Referring to fig. 4, the inner wall of the zoom ring 3 is provided with a driving groove 3.1 along the axial direction, the driving groove 3.1 is a long-strip-shaped groove parallel to the axial direction, and the driving groove 3.1 shown in fig. 4 is a groove with equal width, but the utility model is not limited to this, and other types of grooves, such as a trapezoid groove, or a certain included angle exists between the length direction of the driving groove 3.1 and the axial direction. The driving block arranged at the periphery of the lens seat 4 penetrates through the transmission channel 1.1 and stretches into the driving groove 3.1, the driving block usually adopts a cylindrical bump structure, and the driving groove 3.1 provides power for circumferential movement for the driving block arranged at the periphery of the lens seat 4.
When the zoom ring 3 rotates circumferentially relative to the lens 1, the side wall of the driving groove 3.1 generates a driving force in a circumferential direction for the driving block arranged on the periphery of the lens seat 4, so that the lens seat 4 has a tendency of synchronous rotation, but the driving block passes through the driving channel 1.1, and the driving channel 1.1 is obliquely arranged, so that the driving block moves along the driving channel 1.1, and during the rotation of the lens seat 4, the lens seat 4 also generates an axial displacement, so that the driving block generates an axial relative displacement relative to the driving groove 3.1, and moves relative to the driving block along the length direction of the driving groove 3.1.
It should be noted that in the solution provided by the present utility model, the driving groove 3.1 is used to drive the lens seat 4, and the driving channel 1.1 is used to make the lens seat 4 have an axial movement displacement. However, the present utility model is not limited thereto, and other driving modes may be adopted, and a second mode is provided below, in which a threaded structure is provided on the inner wall of the zoom ring 3, the driving channel 1.1 is an axial channel, and the driving block provided on the outer periphery of the lens seat 4 passes through the driving channel 1.1 to be driven by threads, and at this time, the lens seat 4 does not generate axial rotation and only moves axially. When in driving, the zoom ring 3 rotates along the circumferential direction, the internal thread extends along the circumferential direction and has components in the axial direction, so that the internal thread generates axial component force on the lens seat 4, the driving block of the lens seat 4 passes through the transmission channel 1.1 and cannot do circumferential movement relative to the transmission channel 1.1, and only can do axial movement, and the lens seat 4 can realize axial movement to finish optical zooming.
The upper and lower ends of the transmission channel 1.1 play a limiting role, preventing the inner lens 4.1 from touching other lenses or structures when moving up and down.
Specifically, the driving block and the transmission channel 1.1 arranged on the periphery of the lens seat 4 are respectively provided with two or more, so that the axial acting forces applied to the lens seat 4 in all directions are consistent, and the lens seat 4 can be prevented from being inclined to generate clamping stagnation.
Referring to fig. 1, 2 and 3, a focusing ring 1.2 for increasing friction is provided on the outer surface of the lens 1, the focusing ring 1.2 is fixed on the lens 1, the focusing ring 1.2 corresponds to a part of the lens 1, and the focusing ring 1.2 and the lens 1 synchronously rotate. The outer surface of the focusing ring 1.2 is provided with friction-increasing patterns to prevent slipping during rotation.
The zoom ring 3 is arranged below the focusing ring 1.2 along the axis direction, the outer diameter of the zoom ring 3 and the outer diameter of the focusing ring 1.2 have the fall, the outer diameter of the zoom ring 3 and the outer diameter of the focusing ring 1.2 are different, the fall exists between the outer diameter of the zoom ring 3 and the outer diameter of the focusing ring 1.2, and the fall forms the section sense through the fall of the outer diameters of the zoom ring 3 and the focusing ring 1.2, so that the zoom ring is convenient to position when being held by hand. In addition, the pattern shape of the outer surface of the zoom ring 3 is different from the pattern shape of the outer surface of the focusing ring 1.2, and the distinguishing effect is also achieved.
With reference to fig. 1, a limiting block 1.3 is arranged at one end of the lens 1 extending into the lens seat 2, and the limiting block 1.3 can be matched with the lens seat 2 to limit the maximum size of the lens 1 extending outwards. When the lens 1 moves to the maximum position along the axial direction, the limiting block 1.3 contacts the lens seat 1.2, so that the lens 1 cannot move continuously, and the lens 1 and the lens seat 2 are prevented from being completely separated.
Specifically, the outer surface of the lens 1 is provided with external threads, the lens base 2 is provided with internal threads, and the lens 1 extends into the lens base 2. In connection with fig. 2, where the X portion indicates a screw thread, the lens 1 and the lens holder 2 form a screw thread fit.
Specifically, set up sealing washer 5 between camera lens 1 and lens holder 2, sealing washer 5 is arranged in the gap between camera lens 1 and lens holder 2, sealing washer 5 sets up in the below of camera lens 1 and lens holder 2 screw-thread fit department along the axial, sealing washer 5 is closer to imaging device for the screw thread, prevent that the filth that the screw thread interlock produced from falling into below imaging device during the rotation, solved camera lens 1 and lens holder 2 threaded connection, the screw thread interlock friction produced the filth during the focusing, influence imaging quality's problem.
Referring to fig. 2 and 3, the lens 1 includes a first section with a larger diameter and a second section with a smaller diameter, and an external thread is arranged on the second section; in fig. 3, i denotes a first segment, ii denotes a second segment, and the first segment and the second segment are divided axially and are butted with each other. The external thread that camera lens 1 set up is located the second segmentation, and the screw thread size is littleer, and the product is whole compacter.
The mask 2.1 is arranged on the lens base 2, the mask 2.1 surrounds the lower end of the periphery of the first section to form a shielding, the lens 1 moves to any position in the axial moving process, and the lower end part of the mask 2.1 is shielded by the mask 2.1 to prevent the second section from being exposed.
Specifically, the limiting block 1.3 is a screw screwed at the end part of the lens 1, the screw is usually provided with more than two screws, the screw is screwed into the lens 1 along the axial direction, the head edge of the screw protrudes out of the side wall of the lens 1 in the radial direction, and the screw contacts with the lens seat 2 to form limiting fit. The screw limit is adopted, so that the screw limit has smaller volume and simple structure. Other limiting structures, such as limiting snaps, may be used in addition to screws, and such specific forms are intended to be within the scope of the present utility model.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The lens module capable of optical zooming and mechanical focusing is characterized by comprising a lens (1), a lens seat (2), a zooming ring (3) and a lens seat (4);
the lens (1) is in threaded connection with the lens seat (2), so that the lens (1) moves along the axial direction relative to the lens seat (2) when the lens (1) and the lens seat (2) rotate relatively;
the lens seat (4) is arranged in the lens (1) and is used for installing an inner lens (4.1), and the periphery of the lens seat (4) is contacted with the inner wall of the lens (1);
the zoom ring (3) is rotationally sleeved on the periphery of the lens (1), a transmission channel (1.1) is arranged on the side wall of the lens (1), mutual contact exists between the zoom ring (3) and the lens seat (4) through the transmission channel (1.1), and the lens seat (4) can be driven to axially move when the zoom ring (3) rotates.
2. The lens module capable of optical zooming and mechanical focusing as in claim 1, wherein the transmission channel (1.1) is a strip-shaped through hole which is obliquely arranged, the inner wall of the zooming ring (3) is axially provided with a driving groove (3.1), the driving block which is arranged at the periphery of the lens seat (4) penetrates through the transmission channel (1.1) to extend into the driving groove (3.1), and the driving groove (3.1) provides power for circumferential movement for the driving block which is arranged at the periphery of the lens seat (4).
3. The lens module capable of optical zooming and mechanical focusing as in claim 1, wherein the transmission channel (1.1) is a strip-shaped through hole arranged in parallel and axially, an inner thread is arranged on the inner wall of the zooming ring (3), a driving block arranged on the periphery of the lens seat (4) penetrates through the transmission channel (1.1) to extend into the inner thread, and the inner thread provides power for axial movement for the driving block arranged on the periphery of the lens seat (4).
4. A lens module capable of optical zooming and mechanical focusing as in claim 2 or 3, wherein the driving block and the transmission channel (1.1) arranged on the periphery of the lens seat (4) are respectively provided with two or more.
5. Lens module with optical zoom and mechanical focusing according to claim 4, characterized in that the outer surface of the lens (1) is provided with a focusing ring (1.2) for increasing friction;
the zoom ring (3) is arranged below the focusing ring (1.2) along the axial direction, and a fall exists between the outer diameter of the zoom ring (3) and the outer diameter of the focusing ring (1.2).
6. A lens module capable of optical zooming and mechanical focusing as in claim 2 or 3, characterized in that a limit block (1.3) is arranged at one end of the lens (1) extending into the lens holder (2), and the limit block (1.3) can cooperate with the lens holder (2) to limit the maximum size of the lens (1) extending outwards.
7. The lens module capable of optical zooming and mechanical focusing as recited in claim 6, wherein the outer surface of the lens (1) is provided with external threads, the lens holder (2) is provided with internal threads, and the lens (1) extends into the lens holder (2).
8. The lens module capable of optical zooming and mechanical focusing as recited in claim 7, wherein a sealing ring (5) is arranged between the lens (1) and the lens holder (2), and the sealing ring (5) is axially arranged below the threaded matching position of the lens (1) and the lens holder (2).
9. The optical zoom and mechanical focus lens module according to claim 7, wherein the lens (1) comprises a first section with a larger diameter and a second section with a smaller diameter, the second section being provided with external threads;
the lens mount (2) is provided with a shade (2.1), and the shade (2.1) surrounds the lower end of the periphery of the first section to form a shielding.
10. Lens module with optical zoom and mechanical focusing according to claim 6, characterized in that the stop (1.3) is a screw screwed to the end of the lens (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320051861.7U CN219039462U (en) | 2023-01-09 | 2023-01-09 | Lens module capable of optical zooming and mechanical focusing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320051861.7U CN219039462U (en) | 2023-01-09 | 2023-01-09 | Lens module capable of optical zooming and mechanical focusing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219039462U true CN219039462U (en) | 2023-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320051861.7U Active CN219039462U (en) | 2023-01-09 | 2023-01-09 | Lens module capable of optical zooming and mechanical focusing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219039462U (en) |
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2023
- 2023-01-09 CN CN202320051861.7U patent/CN219039462U/en active Active
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