CN214751032U

CN214751032U - Lens barrel of zoom lens

Info

Publication number: CN214751032U
Application number: CN202120059125.7U
Authority: CN
Inventors: 林海生
Original assignee: Xiamen Lianjin Electrothermal End Needle Co ltd
Current assignee: Xiamen Lianjin Electrothermal End Needle Co ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-11-16
Anticipated expiration: 2031-01-11

Abstract

The utility model discloses a zoom lens barrel, which comprises a fixed main body which is used for accommodating an optical lens group and is integrated and fixed with a lens host, wherein the fixed main body is provided with a guide rail structure which is used for the optical lens group to be integrated into an axial movement, the fixed main body is in a cylinder shape, the guide rail structure comprises a strip-shaped through groove which is arranged on the cylinder wall of the fixed main body, and the strip-shaped through groove is axially consistent with the fixed main body; a picture frame used for fixing the lens component is arranged in the fixing main body in a sliding mode, a focusing handle is arranged on the outer wall of the picture frame, and the focusing handle is arranged in the strip-shaped through groove in a sliding mode; the outer wall of the fixed main body is sleeved with a cam barrel, the cam barrel and the fixed main body are axially overlapped and are rotationally connected to the fixed main body, a spiral groove is formed in the barrel wall of the cam barrel, the focusing handle penetrates through the strip-shaped through groove and extends into the spiral groove, and the fixed main body comprises a barrel body and a clamping ring detachably connected with the barrel body; the utility model discloses simple structure, the assembly is convenient, and coaxial precision height and easy access lens subassembly.

Description

Lens barrel of zoom lens

Technical Field

The utility model relates to an optical lens technical field specifically is a lens barrel can zoom.

Background

With the continuous progress of imaging technology, especially the continuous development of various imaging devices, the lens device of the imaging device needs to improve the precision continuously to meet the requirements of imaging quality, and further obtain the best image effect.

At present, the focusing mode generally adopted is that the distance between a lens and a focal plane is changed to enable the distance to enable an object to clearly image, therefore, a mechanism for driving a lens group to move along the direction of an optical axis is often arranged on the lens, the mechanism is the focusing mechanism, the requirement on the processing precision of the focusing mechanism is high, and the structural requirement is compact. In the traditional lens, a mechanism with the characteristics of a straight groove or a skewed groove is manufactured by opening a mold, so that the lens group is driven to move. According to the traditional mode, a plurality of complex characteristics are set on one part, so that the machining precision is difficult to guarantee, the structure is overstaffed, the hand feeling is rough, and great difficulty is brought to assembly and debugging.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lens barrel can zoom to solve above-mentioned technical problem.

In order to achieve the above object, the utility model provides a following technical scheme: a zoom lens barrel comprises a fixed main body which contains an optical lens assembly and is fixed with a lens host, wherein a guide rail structure which enables the optical lens assembly to move axially is arranged on the fixed main body, the fixed main body is cylindrical, the guide rail structure comprises a strip-shaped through groove arranged on the cylinder wall of the fixed main body, and the strip-shaped through groove is axially consistent with the fixed main body; a picture frame used for fixing the lens component is arranged in the fixing main body in a sliding mode, a focusing handle is arranged on the outer wall of the picture frame, and the focusing handle is arranged in the strip-shaped through groove in a sliding mode; the focusing mechanism is characterized in that a cam barrel is sleeved on the outer wall of the fixed main body, the cam barrel and the fixed main body are axially overlapped and rotatably connected to the fixed main body, a spiral groove is formed in the barrel wall of the cam barrel, the focusing handle penetrates through the strip-shaped through groove and extends into the spiral groove, and the fixed main body comprises a barrel body and a clamping ring detachably connected with the barrel body.

Preferably, one side of the barrel body, which is far away from the clamping ring, is provided with a first limiting ring, the outer wall of the clamping ring is provided with a second limiting ring, and the cam barrel is sleeved between the first limiting ring and the second limiting ring.

Preferably, an inner thread is arranged on the inner wall of one end, close to the clamping ring, of the cylinder body, a connecting plate is arranged at one end, close to the cylinder body, of the clamping ring, an outer thread is arranged on the outer circumferential wall of the connecting plate, and the clamping ring is fixed on the cylinder body through the threaded connection of the connecting plate and the inner wall of the cylinder body.

Preferably, the strip-shaped through grooves are arranged on the periphery of the cylinder wall of the fixed main body, and the focusing handle on the outer wall of the mirror frame is provided with a plurality of strip-shaped through grooves corresponding to the strip-shaped through grooves.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model arranges a plurality of strip-shaped through grooves and a plurality of corresponding focusing handles, and the outer wall of the fixed main body is rotationally provided with a cam barrel provided with a spiral groove, which is integrated with the optical lens into a linkage; the strip-shaped holes, the focusing handles and the spiral grooves correspond one to one; the utility model discloses a focusing mechanism above the camera lens adopted, simple structure convenient to use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is an exploded view of the whole of the present embodiment;

figure 2 is a schematic cross-sectional view of the raised connector tile of this embodiment.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a fixed body; 2. a strip-shaped through groove; 3. a mirror frame; 4. a focusing handle; 5. a cam barrel; 6. a helical groove; 7. a barrel body; 8. a snap ring; 9. a first limit ring; 10. a second stop collar; 11. a connector tile; 12. a lens assembly.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a zoom lens barrel comprises a fixed main body 1 which contains an optical lens group and is integrated and fixed with a lens host, wherein a guide rail structure for the optical lens group to move axially is arranged on the fixed main body 1, the fixed main body 1 is cylindrical, the guide rail structure comprises a strip-shaped through groove 2 arranged on the cylinder wall of the fixed main body 1, and the strip-shaped through groove 2 is axially consistent with the fixed main body 1; a lens frame 3 for fixing the lens component 12 is arranged in the fixing main body 1 in a sliding manner, a focusing handle 4 is arranged on the outer wall of the lens frame 3, and the focusing handle 4 is arranged in the strip-shaped through groove 2 in a sliding manner; the cover is equipped with cam cylinder 5 on 1 outer wall of fixed main part, and cam cylinder 5 and the 1 axial coincidence of fixed main part and rotation are connected on fixed main part 1, are equipped with helicla flute 6 on the 5 section of thick bamboo walls of cam cylinder, and focusing handle 4 passes the bar and leads to groove 2 and stretch into in the helicla flute 6, and fixed main part 1 includes stack shell 7 and can dismantle the snap ring 8 of being connected with stack shell 7 and need explain be: the spiral groove 6, the strip-shaped through groove 2 and the focusing handle 4 are in one-to-one correspondence, and the focusing handle 4 can move up and down on the strip-shaped through groove 2 under the driving of the spiral groove 6 by rotating the cam barrel 5, so that the lens frame 3 is driven to move up and down, and the focal length is adjusted.

Specifically, one side of the barrel body 7, which is far away from the clamping ring 8, is provided with a first limiting ring 9, the outer wall of the clamping ring 8 is provided with a second limiting ring 10, the cam barrel 5 is sleeved between the first limiting ring 9 and the second limiting ring 10, and the cam barrel 5 is rotated on the outer wall of the fixed main body 1 through the arrangement of the first limiting ring 9 and the second limiting ring 10 to drive the focusing handle 4 to move.

Specifically, the inner wall of one end of the barrel 7, which is close to the snap ring 8, is provided with an internal thread, one end of the snap ring 8, which is close to the barrel 7, is provided with a connecting plate 11, the outer circumferential wall of the connecting plate 11 is provided with an external thread, the snap ring 8 is fixed on the barrel 7 through the threaded connection of the connecting plate 11 and the inner wall of the barrel 7, and when the lens assembly 12 is required to be maintained, the snap ring 8 can be detached, the sliding-out mirror frame 3 can be used for detecting and maintaining the inside of the lens assembly 12.

Specifically, the groove 2 is led to in the bar is provided with many along 1 section of thick bamboo wall week of fixed main part, and the focusing handle 4 of 3 outer walls of picture frame corresponds the groove 2 is led to in the bar and is provided with a plurality ofly, needs the explanation be: the strip that leads to in this embodiment 2 sets up to three, and the even equidistant setting of edge 1 circumference outer wall of fixed main part respectively can be more stable when the focus is adjusted through setting up three with strip through groove 2, focusing handle 4 and helicla flute 6.

One specific application example of this embodiment is:

when the device is used, only the cam barrel 5 needs to be rotated, so that the focusing handle 4 and the spiral groove 6 are driven to slide relatively, the focusing handle 4 drives the lens frame 3 to slide along the axis in the fixed main body 1, and the lens is moved to focus; when the lens assembly 12 needs to be maintained, the fixing body 1 can be detached, the snap ring 8 can be taken out in a rotating mode, the lens frame 3 can slide out, and therefore the lens assembly 12 in the lens frame 3 can be detected and maintained.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims

1. The utility model provides a zoom lens barrel, is including holding fixed main part (1) that optical lens group is whole to become and is fixed with the camera lens host computer, is provided with on fixed main part (1) and supplies optical lens group to become axial displacement's guide rail structure, its characterized in that: the fixed main body (1) is cylindrical, the guide rail structure comprises strip-shaped through grooves (2) formed in the cylinder wall of the fixed main body (1), and the strip-shaped through grooves (2) are axially consistent with the fixed main body (1); a lens frame (3) used for fixing a lens component (12) is arranged in the fixing main body (1) in a sliding mode, a focusing handle (4) is arranged on the outer wall of the lens frame (3), and the focusing handle (4) is arranged in the strip-shaped through groove (2) in a sliding mode; the focusing mechanism is characterized in that a cam barrel (5) is sleeved on the outer wall of the fixing main body (1), the cam barrel (5) is axially overlapped with the fixing main body (1) and is rotatably connected to the fixing main body (1), a spiral groove (6) is formed in the barrel wall of the cam barrel (5), the focusing handle (4) penetrates through the strip-shaped through groove (2) and extends into the spiral groove (6), and the fixing main body (1) comprises a barrel body (7) and a clamping ring (8) detachably connected with the barrel body (7).

2. The variable focus lens barrel according to claim 1, wherein: one side of the barrel body (7) far away from the clamping ring (8) is provided with a first limiting ring (9), the outer wall of the clamping ring (8) is provided with a second limiting ring (10), and the cam barrel (5) is sleeved between the first limiting ring (9) and the second limiting ring (10).

3. The variable focus lens barrel according to claim 2, wherein: the barrel body (7) is close to the one end inner wall of snap ring (8) and is equipped with the internal thread, the one end that snap ring (8) are close to barrel body (7) is equipped with linkage plate (11), linkage plate (11) circumference outer wall is equipped with the external screw thread, snap ring (8) are fixed in on barrel body (7) through linkage plate (11) and the threaded connection of barrel body (7) inner wall.

4. The variable focus lens barrel according to claim 1, wherein: the strip-shaped through grooves (2) are arranged along the circumferential sides of the cylinder walls of the fixed main body (1), and the focusing handle (4) on the outer wall of the picture frame (3) is provided with a plurality of strip-shaped through grooves (2).