CN220040851U

CN220040851U - Manual focusing lens

Info

Publication number: CN220040851U
Application number: CN202320850325.3U
Authority: CN
Inventors: 鲍海江; 黄文俊
Original assignee: Zhongshan Liantuo Optical Co ltd
Current assignee: Zhongshan Liantuo Optical Co ltd
Priority date: 2023-04-17
Filing date: 2023-04-17
Publication date: 2023-11-17
Anticipated expiration: 2033-04-17

Abstract

The utility model relates to the technical field of lenses, in particular to a manual focusing lens, which comprises a first lens barrel, a second lens barrel, a third lens barrel and a plurality of movable nails, wherein a lens assembly is arranged in the first lens barrel, a fixing hole for fixing the movable nails is formed in the first lens barrel, a plurality of vertical grooves for allowing the movable nails to move up and down are formed in the second lens barrel, and a plurality of spiral grooves for allowing the movable nails to move are formed in the third lens barrel. The utility model comprises a first lens cone, a second lens cone, a third lens cone and a plurality of movable nails, wherein the first lens cone is provided with a fixed hole, the second lens cone is provided with a vertical groove, the third lens cone is provided with a spiral groove, the movable nails sequentially penetrate through the spiral groove, the vertical groove and the fixed hole, when the third lens cone rotates relative to the second lens cone, the movable nails are driven to move in the spiral groove and are limited by the vertical groove, and the first lens cone moves up and down relative to the second lens cone along with the movable nails so as to realize focusing.

Description

Manual focusing lens

Technical Field

The utility model relates to the technical field of lenses, in particular to a manual focusing lens.

Background

With the rapid development of imaging technology, lenses are widely used in imaging devices such as digital cameras and video cameras, and the focusing effect of the lenses determines the quality of imaging. Optical zoom is produced by the change in position of the lens, object and focus. When the imaging surface moves in the horizontal direction, vision and focal length change, and a scene farther away becomes clearer, so that people feel like an object progressive feeling. It is apparent that the focal length of the lens can be changed to change the angle of view. With photography, this is optical zoom. The focal length of the lens is changed by changing the relative position of each lens in the zoom lens.

The screw thread and straight groove drum are common focusing structures, and the device has the advantages of simple structure, low cost, easiness in processing and the like. But the traditional thread focusing structure is easy to cause the problems of chip falling, blocking and the like.

Disclosure of Invention

The utility model aims to at least solve one of the technical problems in the prior art and provides a manual focusing lens.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a manual focusing lens, includes first barrel, second barrel, third barrel, a plurality of movable nail, be provided with the lens subassembly in the first barrel, the second barrel cover is established in the outside of first barrel and can be moved relative to first barrel, the third barrel cover is established in the outside of second barrel and can rotate relative to second barrel, be provided with the fixed orifices that is used for fixed movable nail on the first barrel, a plurality of vertical grooves that are used for supplying the movable nail to reciprocate that are provided with on the second barrel, be provided with a plurality of helicla grooves that are used for supplying the movable nail to move on the third barrel, the helicla disk of helicla flute along the lateral wall of third barrel rises, the movable nail passes helicla groove, vertical groove, fixed orifices from outside to inside in proper order.

Further, the third lens barrel is sleeved with a fourth lens barrel, and the fourth lens barrel is fixedly connected with the third lens barrel.

Further, a locking bolt is arranged on the fourth lens barrel, the locking bolt extends inwards to be in contact with the second lens barrel, and the locking bolt is screwed down to enable the fourth lens barrel and the second lens barrel to be relatively fixed.

Further, a second limiting buckle is arranged on the fourth lens cone, and a second limiting groove matched with the second limiting buckle is arranged on the third lens cone.

Further, a first limiting buckle is arranged on the third lens cone, and a first limiting groove matched with the first limiting buckle is arranged on the second lens cone.

Further, a focusing multiplying power scale is arranged on the second lens barrel.

Further, a fifth lens barrel is arranged at the bottom of the focusing lens, the fifth lens barrel is fixed on the second lens barrel, and connecting threads are arranged at the bottom of the fifth lens barrel.

Further, a spring spacer is arranged between the fifth lens barrel and the third lens barrel.

Further, a third limiting buckle is arranged on the fifth lens cone, and a third limiting groove matched with the third limiting buckle is arranged on the second lens cone.

Further, damping grooves are formed in the outer side walls of the first lens barrel, the second lens barrel and the third lens barrel, and lubricating oil is filled in the damping grooves.

As can be seen from the above description of the present utility model, compared with the prior art, the manual focusing lens of the present utility model at least includes one of the following advantages:

1. the utility model comprises a first lens cone, a second lens cone, a third lens cone and a plurality of movable nails, wherein a fixed hole is arranged on the first lens cone, a vertical groove is arranged on the second lens cone, a spiral groove is arranged on the third lens cone, the movable nails sequentially penetrate through the spiral groove, the vertical groove and the fixed hole, when the third lens cone rotates relative to the second lens cone, the movable nails are driven to move in the spiral groove and are limited by the vertical groove, and the first lens cone moves up and down relative to the second lens cone along with the movable nails so as to realize focusing;

2. compared with the traditional thread focusing structure, the utility model has the advantages that the problems of chip falling, blocking and the like are avoided, and the hidden spiral groove design is adopted, so that the structure is more compact, the size is small, and the weight is light;

3. the utility model adds the double designs of the damping groove and the spring gasket, can prevent the problems of clamping, unsmooth and the like caused by scraps or dirt when the lens barrel stretches and contracts, can better increase the rotating hand feeling, has better control effect and can realize smoother adjustment.

Drawings

FIG. 1 is a schematic cross-sectional view of a manual focus lens according to a preferred embodiment of the present utility model;

FIG. 2 is an exploded view of a manual focus lens according to a preferred embodiment of the present utility model;

reference numerals: 1. a first barrel; 2. a second barrel; 3. a third barrel; 4. a movable nail; 5. a fourth lens barrel; 6. a locking bolt; 7. a fifth lens barrel; 8. a spring washer; 11. a fixing hole; 21. a vertical slot; 22. focusing magnification scales; 31. a spiral groove; 32. the first limit button; 51. the second limit button; 71. a connecting thread; 72. and a third limit buckle.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-2, a manual focusing lens of the preferred embodiment of the present utility model includes a first lens barrel 1, a second lens barrel 2, a third lens barrel 3, and a plurality of movable nails 4, wherein a lens assembly 12 is disposed in the first lens barrel 1, the second lens barrel 2 is sleeved outside the first lens barrel 1 and is movable relative to the first lens barrel 1, the third lens barrel 3 is sleeved outside the second lens barrel 2 and is rotatable relative to the second lens barrel 2, a fixing hole 11 for fixing the movable nail 4 is disposed on the first lens barrel 1, a plurality of vertical grooves 21 for vertically moving the movable nail 4 are disposed on the second lens barrel 2, a plurality of spiral grooves 31 for moving the movable nail 4 are disposed on the third lens barrel 3, the spiral grooves 31 spiral along the side wall of the third lens barrel 3, and the movable nail 4 sequentially passes through the spiral grooves 31, the vertical grooves 21 and the fixing hole 11 from outside to inside.

The utility model comprises a first lens cone 1, a second lens cone 2, a third lens cone 3 and a plurality of movable nails 4, wherein a fixed hole 11 is arranged on the first lens cone 1, a vertical groove 21 is arranged on the second lens cone 2, a spiral groove 31 is arranged on the third lens cone 3, the movable nails 4 sequentially penetrate through the spiral groove 31, the vertical groove 21 and the fixed hole 11, when the third lens cone 3 rotates relative to the second lens cone 2, the movable nails 4 are driven to move in the spiral groove 31, and the first lens cone 1 moves up and down relative to the second lens cone 2 along with the movable nails 4 under the restriction of the vertical groove 21 so as to realize focusing; compared with the traditional thread focusing structure, the utility model has the advantages that the problems of chip falling, blocking and the like are avoided, and the hidden guide groove design is adopted, so that the structure is more compact, the size is small, and the weight is light.

Specifically, the movable nails 4, the spiral grooves 31, the vertical grooves 21 and the fixing holes 11 can be all designed to be 1 or more, and in this embodiment, are designed to be 3 and correspond to each other one by one, so that the overall structure is more stable.

As a preferred embodiment of the utility model, it may also have the following additional technical features:

in this embodiment, the third lens barrel 3 is sleeved with a fourth lens barrel 5, and the fourth lens barrel 5 is fixedly connected with the third lens barrel 3. By arranging the fourth lens barrel 5 outside the third lens barrel 3, the spiral groove 31 is hidden, so that the structure is more compact and attractive.

In this embodiment, the fourth barrel 5 is provided with a locking bolt 6, the locking bolt 6 extends inward to contact the second barrel 2, and the locking bolt 6 is tightened to fix the fourth barrel 5 and the second barrel 2 relatively. The fourth lens barrel 5 is provided with a locking bolt 6, after manual focusing is finished, the second lens barrel 2 and the fourth lens barrel 5 are relatively fixed by screwing the locking bolt 6 so as to fix the lens, and specifically, the fourth lens barrel 5, the third lens barrel 3 and the second lens barrel 2 are provided with bolt holes matched with the locking bolt 6.

In this embodiment, the fourth lens barrel 5 is provided with a second limiting buckle 51, and the third lens barrel 3 is provided with a second limiting groove matched with the second limiting buckle 51. Through setting up second limit button 51 and second spacing groove on fourth lens cone 5 and the third lens cone 3, make the assembly more accurate, prevent to adorn the wrong mistake, save the equipment time, make focusing scope more accurate simultaneously.

In this embodiment, the third lens barrel 3 is provided with a first limiting buckle 32, and the second lens barrel 2 is provided with a first limiting groove matched with the first limiting buckle 32. The first limit buckles 32 and the first limit grooves are arranged on the third lens barrel 3 and the second lens barrel 2, so that the assembly is more accurate, the reverse assembly is prevented, the assembly time is saved, and the focusing range is more accurate.

In the present embodiment, the second barrel 2 is provided with a focusing magnification scale 22. In focusing, the focusing magnification is known by observing the focusing magnification scale 22, and specifically, focusing is performed with the lock bolt 6 as a reference point.

In the present embodiment, a fifth lens barrel 7 is disposed at the bottom of the focus lens, the fifth lens barrel 7 is fixed on the second lens barrel 2, and a connecting thread 71 is disposed at the bottom of the fifth lens barrel 7. A fifth barrel 7 with a connecting screw 71 is provided on the second barrel 2 to connect other structures of the lens module through the fifth barrel 7.

In the present embodiment, a spring spacer 8 is disposed between the fifth barrel 7 and the third barrel 3. The rotating hand feeling can be better increased through the spring gasket 8, the problems of incapacitation, unsmooth operation and the like are avoided, the control effect is better, and the adjustment is smoother.

In this embodiment, the fifth lens barrel 7 is provided with a third limit button 72, and the second lens barrel 2 is provided with a third limit groove that is matched with the third limit button 72. Through setting up third limit button 72 and third spacing groove on fifth lens cone 7 and the second lens cone 2, make the assembly more accurate, prevent to adorn the wrong mistake, save the equipment time, make focusing scope more accurate simultaneously.

In this embodiment, damping grooves are formed on the outer sidewalls of the first barrel 1, the second barrel 2 and the third barrel 3, and lubricating oil is filled in the damping grooves. Through set up the damping groove at the lateral wall of first lens cone 1, second lens cone 2, third lens cone 3 to fill lubricating oil, prevent the problem such as the card that causes because of piece or dirt when relevant lens cone moves and hang over, not in order, can increase the damping better simultaneously and feel, control effect is better, adjusts more smoothly.

The operation process of the utility model comprises the following steps: during focusing, the second lens barrel 2 is held, the fourth lens barrel 5 is rotated, the third lens barrel 3 rotates along with the fourth lens barrel 5, the third lens barrel 3 rotates relative to the second lens barrel 2 and drives the movable nail 4 to move in the spiral groove 31, the movable nail 4 is limited by the vertical groove 21 and moves up and down relative to the second lens barrel 2, the first lens barrel 1 moves up and down relative to the second lens barrel 2 along with the movable nail 4, so that the position of the first lens barrel 1 is adjusted, the focusing effect is realized, and when focusing is finished, the fourth lens barrel 5 is fixed by screwing the locking bolt 6, and shooting is performed.

The above additional technical features can be freely combined and superimposed by a person skilled in the art without conflict.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. A manual focusing lens, characterized in that: including first barrel (1), second barrel (2), third barrel (3), a plurality of movable nail (4), be provided with lens subassembly (12) in first barrel (1), second barrel (2) cover is established in the outside of first barrel (1) and can be moved relative to first barrel (1), third barrel (3) cover is established in the outside of second barrel (2) and can be rotated relative to second barrel (2), be provided with fixed orifices (11) that are used for fixed movable nail (4) on first barrel (1), a plurality of vertical groove (21) that are used for supplying movable nail (4) to reciprocate that are provided with on second barrel (2), be provided with a plurality of helicla flute (31) that are used for supplying movable nail (4) to move on third barrel (3), helicla flute (31) are followed the lateral wall spiral of third barrel (3) and are coiled, movable nail (4) are inwards passed helicla flute (31), vertical groove (21), fixed orifices (11) from outside in proper order.

2. The manual focus lens according to claim 1, wherein: the third lens barrel (3) is sleeved with a fourth lens barrel (5), and the fourth lens barrel (5) is fixedly connected with the third lens barrel (3).

3. The manual focus lens according to claim 2, wherein: the fourth lens cone (5) is provided with a locking bolt (6), the locking bolt (6) inwards extends to be in contact with the second lens cone (2), and the locking bolt (6) is screwed to enable the fourth lens cone (5) and the second lens cone (2) to be relatively fixed.

4. The manual focus lens according to claim 2, wherein: the fourth lens cone (5) is provided with a second limiting buckle (51), and the third lens cone (3) is provided with a second limiting groove matched with the second limiting buckle (51).

5. The manual focus lens according to claim 1, wherein: the third lens cone (3) is provided with a first limiting buckle (32), and the second lens cone (2) is provided with a first limiting groove matched with the first limiting buckle (32).

6. The manual focus lens according to claim 1, wherein: the second lens barrel (2) is provided with a focusing multiplying power scale (22).

7. The manual focus lens according to claim 1, wherein: the bottom of focusing lens is provided with fifth lens cone (7), fifth lens cone (7) is fixed on second lens cone (2), the bottom of fifth lens cone (7) is provided with connecting screw thread (71).

8. The manual focus lens of claim 7 wherein: a spring gasket (8) is arranged between the fifth lens barrel (7) and the third lens barrel (3).

9. The manual focus lens of claim 7 wherein: the fifth lens barrel (7) is provided with a third limiting buckle (72), and the second lens barrel (2) is provided with a third limiting groove matched with the third limiting buckle (72).

10. The manual focus lens according to claim 1, wherein: damping grooves are formed in the outer side walls of the first lens cone (1), the second lens cone (2) and the third lens cone (3), and lubricating oil is filled in the damping grooves.