CN216434501U

CN216434501U - Focus-adjustable lens structure

Info

Publication number: CN216434501U
Application number: CN202123122604.8U
Authority: CN
Inventors: 张矿伟
Original assignee: Luoyang Baibohe Photoelectric Technology Co ltd
Current assignee: Luoyang Baibohe Photoelectric Technology Co ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-05-03
Anticipated expiration: 2031-12-14

Abstract

The utility model discloses a focusing lens structure, which comprises a lens cone, a focusing ring and a focusing barrel, wherein the focusing ring and the focusing barrel are coaxially and fixedly connected, the focusing barrel is connected with the lens cone through a thread section, and the movable sleeve of the focusing ring is arranged on the outer wall of the lens cone; a V-shaped channel is formed in the circumferential direction of the focusing ring, a conical screw is matched in the V-shaped channel, and the conical screw is in threaded connection with the lens barrel; the V-shaped groove is provided with two opposite inclined planes, and a gap is formed between the outer conical surface of the conical head of the conical screw and the inclined planes. The utility model discloses the locking mode is simple, focusing barrel axial is kept away from or is close to the lens cone during rotatory focusing ring, and when the inclined plane of V type channel was inconsistent with the conical head external conical surface of conical screw, the focusing ring targets in place and can not rotate again to lock a focusing section of thick bamboo, come a locking focusing section of thick bamboo through the cooperation of conical screw and V type channel, through the lift conical screw, change the conical head external conical surface of conical screw and the interval on V type channel inclined plane, thereby realize the regulation of the horizontal focal length of minim.

Description

Focus-adjustable lens structure

Technical Field

The utility model relates to a camera lens technical field specifically is a but focusing lens structure.

Background

The lens focusing is one of the most commonly used functions of the lens, and the lens focusing realizes the linear motion of the lens barrel by manually or electrically rotating a focusing ring on the lens, so that the focusing function of the lens is realized. The existing focusing lens needs to be locked after focusing, a fixed outer barrel is usually arranged, a locking screw is arranged on the outer barrel, after the focusing part is moved in place, the locking screw is locked and positioned, the structure and the operation are all more complicated, and in the use process of the lens, the locking screw is not loosened due to impact or vibration on the lens, so that the lens cannot be kept stable after the focal length is adjusted.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is overcome current defect, a focus adjustable lens structure is provided, the locking mode is simple, focusing barrel axial is kept away from or is close to the lens cone during rotatory focusing ring, when the inclined plane of V type channel was inconsistent with the conical head external cone face of conical screw, the focusing ring targets in place and can not be rotatory again, thereby lock focusing barrel, come locking focusing barrel through the cooperation of conical screw with V type channel, through the lift conical screw, the conical head external cone face that changes conical screw and the interval on V type channel inclined plane, thereby realize the regulation of the horizontal focus of minim, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a focus-adjustable lens structure comprises a lens cone, a focusing ring and a focusing barrel, wherein the focusing ring and the focusing barrel are coaxially and fixedly connected, the focusing barrel is connected with the lens cone through a threaded section, and the focusing ring is movably sleeved on the outer wall of the lens cone; the focusing ring is circumferentially provided with a V-shaped channel, a conical screw is matched in the V-shaped channel, and the conical screw is in threaded connection with the lens barrel; the V-shaped groove is provided with two opposite inclined planes, and a gap is formed between the outer conical surface of the conical head of the conical screw and the inclined planes.

Preferably, when the focusing ring is rotated, the focusing barrel is axially far away from or close to the lens barrel and is limited by the position of the conical screw, and when the inclined plane of the V-shaped channel is abutted against the outer conical surface of the conical head of the conical screw, the focusing ring is in place and cannot be rotated, so that the focusing barrel is locked.

Preferably, the number of the V-shaped channels is two, the two V-shaped channels are internally provided with conical screws, the radian of each V-shaped channel is 180-200 degrees, and the two V-shaped channels are oppositely arranged.

Preferably, the focusing barrel is fixed with the focusing ring through a plurality of screws, and the plurality of screws are annularly arrayed around the axis of the focusing barrel.

Preferably, a lens is mounted in the lens barrel.

Compared with the prior art, the beneficial effects of the utility model are that: this adjustable focusing lens structure, the locking mode is simple, focusing barrel axial is kept away from or is close to the lens cone during rotatory focusing ring, be subject to the position of conical screw, when the inclined plane of V type channel and the conical head external conical surface of conical screw inconsistent, focusing ring targets in place and can not rotate again, thereby lock focusing barrel, fix a position locking focusing barrel through the combination of conical screw and V type channel inclined plane, through the lift conical screw, change the conical head external conical surface of conical screw and the interval on V type channel inclined plane, thereby realize the regulation of the horizontal focal length of minim.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a sectional view of the present invention;

fig. 3 is an enlarged schematic view of the structure at a position a of the present invention.

In the figure: the focusing device comprises a lens barrel 1, a lens 1.1, a focusing ring 2, a V-shaped channel 2.1, a conical screw 3, a focusing barrel 4 and a thread section 5.

Detailed Description

In the following description, the technical solution of the present invention will be described with reference to the accompanying drawings in the embodiment of the present invention, it should be understood that, if there are the indicated positions or positional relationships such as "upper", "lower", "front", "rear", "left", "right", etc., it only corresponds to the drawings of the present invention, and for convenience of description, it is not intended to indicate or imply that the indicated device or element must have a specific position:

referring to fig. 1-3, the present invention provides a technical solution: a focus-adjustable lens structure comprises a lens barrel 1, a focus ring 2 and a focus barrel 4, wherein the focus ring 2 and the focus barrel 4 are coaxially and fixedly connected, the focus barrel 4 is connected with the lens barrel 1 through a thread section 5, and the focus ring 2 is movably sleeved on the outer wall of the lens barrel 1; a V-shaped channel 2.1 is formed in the circumferential direction of the focusing ring 2, a conical screw 3 is matched in the V-shaped channel 2.1, and the conical screw 3 is in threaded connection with the lens barrel 1; the V-shaped channel 2.1 is provided with two opposite inclined planes, and a gap is formed between the outer conical surface of the conical head of the conical screw 3 and the inclined planes;

it can be understood that when the focusing ring 2 is rotated, the focusing barrel 4 is axially far away from or close to the lens barrel 1 and is limited by the position of the conical screw 3, and when the inclined plane of the V-shaped channel 2.1 is abutted against the outer conical surface of the conical head of the conical screw 3, the focusing ring 2 is in place and cannot rotate, so that the focusing barrel 4 is locked; the focusing barrel 4 is positioned and locked by the combination of the conical screw 3 and the inclined plane of the V-shaped channel 2.1;

as shown in fig. 2, the focusing barrel 4 is connected with the lens barrel 1 through a threaded section 5, an external thread is arranged on the outer wall of the focusing barrel 4, an internal thread is arranged on the inner wall of the lens barrel 1, and the external thread is matched with the internal thread;

as shown in fig. 1, two V-shaped channels 2.1 are provided, tapered screws 3 are provided in the two V-shaped channels 2.1, the radian of the V-shaped channel 2.1 is 180 ° -200 °, and the two V-shaped channels 2.1 are oppositely arranged; the two V-shaped channels 2.1 and the corresponding conical screws 3 are arranged to limit the axial displacement of the focusing ring 2, so that the positioning and locking are firmer;

in addition, the focus cylinder 4 is fixed to the focus ring 2 by a plurality of screws which are annularly arrayed around the axis of the focus cylinder 4; the lens barrel 1 is internally provided with a lens 1.1.

The details of the present invention not described in detail are prior art, and it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the scope of the claims.

Claims

1. The utility model provides a but focusing lens structure, includes lens cone (1), focusing ring (2) and focusing section of thick bamboo (4), its characterized in that: the focusing ring (2) is coaxially and fixedly connected with the focusing barrel (4), the focusing barrel (4) is connected with the lens cone (1) through a threaded section (5), and the focusing ring (2) is movably sleeved on the outer wall of the lens cone (1); the focusing ring (2) is circumferentially provided with a V-shaped channel (2.1), a conical screw (3) is adapted in the V-shaped channel (2.1), and the conical screw (3) is in threaded connection with the lens cone (1); the V-shaped channel (2.1) is provided with two opposite inclined planes, and a gap is formed between the outer conical surface of the conical head of the conical screw (3) and the inclined planes.

2. A structure of a variable focus lens as claimed in claim 1, wherein: when the focusing ring (2) is rotated, the focusing barrel (4) is axially far away from or close to the lens barrel (1) and is limited by the position of the conical screw (3), and when the inclined plane of the V-shaped channel (2.1) is abutted against the outer conical surface of the conical head of the conical screw (3), the focusing ring (2) is in place and cannot rotate, so that the focusing barrel (4) is locked.

3. A structure of a variable focus lens as claimed in claim 1, wherein: the number of the V-shaped channels (2.1) is two, the two V-shaped channels (2.1) are internally provided with the conical screws (3), the radian of each V-shaped channel (2.1) is 180-200 degrees, and the two V-shaped channels (2.1) are oppositely arranged.

4. A structure of a variable focus lens as claimed in claim 1, wherein: the focusing barrel (4) is fixed with the focusing ring (2) through a plurality of screws, and the plurality of screws are annularly arrayed around the axis of the focusing barrel (4).

5. A structure of a variable focus lens as claimed in claim 1, wherein: the lens (1.1) is arranged in the lens barrel (1).