CN214201892U

CN214201892U - Manual focusing lens structure

Info

Publication number: CN214201892U
Application number: CN202120099666.2U
Authority: CN
Inventors: 夏超; 常静; 张文旭; 闫勇; 孙宾宾
Original assignee: Nanyang Tianna Photoelectric Technology Co ltd
Current assignee: Nanyang Tianna Photoelectric Technology Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-09-14
Anticipated expiration: 2031-01-14

Abstract

The utility model discloses a manual focusing lens structure, which relates to the technical field of lens structures and comprises a fixed cylinder, wherein the fixed cylinder is arranged to ensure that the manual focusing lens structure has stable focusing effect, a lens group guide groove is arranged in the fixed cylinder, a first pin positioning hole is arranged on the outer surface of the fixed cylinder, a fixed block is fixedly connected with the bottom of the fixed cylinder, a rotary cylinder is sleeved on the outer surface of the fixed cylinder, the manual focusing lens structure has quick focusing effect through the arrangement of the rotary cylinder, the focusing effect in a short time is achieved, the purpose of quick focusing is achieved, a focusing chute is arranged on the outer surface of the rotary cylinder, a limit flat groove is arranged below the focusing chute, a second pin positioning hole is arranged above the focusing chute, and a lens group is clamped in the lens group guide groove, the outer surface of the lens group is provided with a group boss.

Description

Manual focusing lens structure

Technical Field

The utility model relates to a camera lens technical field specifically is a manual focus camera lens structure.

Background

The lens refers to an optical component used for generating images of a film camera and a projector, and comprises a plurality of lenses, various lenses have different modeling characteristics, and the application of the lenses in photography modeling forms an optical expression means, and manual focusing is a focusing mode for adjusting the lens of the camera by manually rotating a focusing ring so as to make the shot pictures clear, which greatly depends on the discrimination of human eyes on the images on a focusing screen, the proficiency of a photographer and even the eyesight of the photographer, in recent years, the application and popularization of the Digital camera in small portable terminal equipment such as a mobile phone, a PDA (personal Digital assistant) and the like have different requirements and selections with the functions of the Digital camera, basically tend to miniaturization and high image quality, while the Digital camera combined with the small portable terminal equipment has smaller volume and simple structure, and the manual focusing error in the Digital camera era is generally used in automatic focusing, the method is particularly characterized by small scene contrast, large main body background contrast, low environmental brightness, high environmental brightness, interference of high-brightness light source, need of shooting through a transparent barrier such as glass, main body outside a focusing area and the like.

The existing focusing structure has poor stability and inconvenient disassembly and assembly, and brings inconvenience to people in use.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a manual focusing lens structure has solved the problem of proposing among the above-mentioned background art.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a manual camera lens structure of focusing, includes a fixed section of thick bamboo, lens crowd guide way has been seted up to the inside of a fixed section of thick bamboo, first pin locating hole has been seted up to the surface of a fixed section of thick bamboo, the bottom fixedly connected with fixed block of a fixed section of thick bamboo, the surface of a fixed section of thick bamboo has cup jointed the revolving drum, the chute of focusing has been seted up to the surface of a revolving drum, the below of focusing the chute has been seted up spacing flat slot, the top of focusing the chute is equipped with second pin locating hole, the inside joint of lens crowd guide way has lens group, the surface of lens group is provided with the group boss.

Optionally, the number of the limiting flat grooves is three, and the three limiting flat grooves are uniformly distributed on the surface of the rotary drum.

Optionally, the fixed cylinder is fixedly connected with the first pin, the screw and the nut through a pin positioning hole, and the second pin is inserted into a group boss on the outer surface of the lens group through a focusing chute on the outer surface of the rotary cylinder for fixing.

Optionally, the number of the lens group guide grooves is three, and the three lens group guide grooves are uniformly distributed in the fixed cylinder at 120 degrees.

Optionally, the group boss is installed in the focusing chute, and the group boss is fixedly connected with the second pin through a screw.

Optionally, the outer surface of the lens group is provided with a guide block, and the guide block is matched with the guide groove of the lens group for use.

(III) advantageous effects

The utility model provides a manual focusing lens structure possesses following beneficial effect:

1. the manual focusing lens structure has the advantages that the manual focusing lens structure has the effect of fast focusing through the arrangement of the rotary cylinder, the limit flat groove and the first pin are arranged in a matched mode, the cylindrical surface of the rotary cylinder is provided with the limit flat groove and the focusing chute in the using process, the width of the limit flat groove is 0-0.01MM larger than the diameter of the pin, the groove is inclined to form a certain angle relative to the opposite surface, so that the distance between the opposite surfaces of the lens group driven by the second pin is changed, focusing is achieved, the rotary cylinder is limited to move up and down in the limit flat groove on the outer surface of the rotary cylinder through the first pin, the lens group is driven by the second pin to move up and down in the focusing chute, focusing is achieved in a short time, and the purpose of fast focusing is achieved.

2. This manual camera lens structure of focusing, setting through the solid fixed cylinder, make this manual camera lens structure of focusing possess the stable effect of focus, cooperation setting through solid fixed cylinder and fixed block, the in-process that uses can cup joint the inner wall of revolving cylinder in the surface of solid fixed cylinder, in the downthehole of solid fixed cylinder surface of impressing three nuts, three first pin and three screw are locked, insert the inside lens crowd guide way of solid fixed cylinder with the lens group, insert the group boss of lens group surface on the focusing chute of three second pin through revolving cylinder then lock three screw and fix, four fixed orificess above the fixed block of solid fixed cylinder one side fixed connection pass through the screw and fix the solid fixed cylinder on photographic equipment, thereby played the effect of stability when improving the focus, the stable mesh of focusing has been reached.

Drawings

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

FIG. 2 is a schematic sectional view of the present invention;

FIG. 3 is a schematic view of the rotary drum of the present invention;

FIG. 4 is a schematic view of the fixing cylinder of the present invention;

fig. 5 is a front view of the lens assembly of the present invention.

In the figure: 1. a fixed cylinder; 2. a lens group guide groove; 3. pin locating holes; 4. a fixed block; 5. a fixing hole; 6. a rotary drum; 7. a focusing chute; 8. a limiting flat groove; 9. a lens group; 10. a group boss; 11. a first pin; 12. a screw; 13. a nut; 14. a second pin; 15. and a guide block.

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.

Referring to fig. 1-5, the present invention provides a technical solution: a manual focusing lens structure comprises a fixed cylinder 1, the fixed cylinder 1 is arranged, the inner wall of a rotary cylinder 6 can be sleeved with the outer surface of the fixed cylinder 1 in the using process, three nuts 13 are pressed into pin positioning holes 3 on the outer surface of the fixed cylinder 1 through the matching arrangement of the fixed cylinder 1 and a fixed block 4, three first pins 11 and three screws 12 are locked, a lens group 9 is inserted into a lens group guide groove 2 in the fixed cylinder 1, three second pins 14 are inserted into a group boss 10 on the outer surface of the lens group 9 through a focusing inclined groove 7 of the rotary cylinder 6 and then are locked with the three screws 12 for fixing, the fixed cylinder 1 is fixed on a photographic device through the screws 12 by four fixing holes 5 on the fixed block 4 fixedly connected with one side of the fixed cylinder 1, thereby playing a role of improving the stability during focusing and achieving the purpose of stable focusing, the fixed cylinder 1 is internally provided with three lens group guide grooves 2, the three lens group guide grooves 2 are uniformly distributed in the fixed cylinder 1 at 120 degrees, the outer surface of the fixed cylinder 1 is provided with a pin positioning hole 3, the bottom of the fixed cylinder 1 is fixedly connected with a fixed block 4, the outer surface of the fixed cylinder 1 is sleeved with a rotary cylinder 6, the manual focusing lens structure has a quick focusing effect through the arrangement of the rotary cylinder 6, the cylindrical surface of the rotary cylinder 6 is provided with a limit flat groove 8 and a focusing chute 7 through the matching arrangement of the limit flat groove 8 and a first pin 11 in the using process, the width of the limit flat groove 8 is 0-0.01MM larger than the diameter of the pin, the groove is inclined at a certain angle relative to the opposite surface, so that the distance of the opposite surface of the lens group 9 driven by a second pin 14 is changed, thereby realizing focusing, the vertical movement of the rotary cylinder 6 is limited in the limit flat groove 8 on the outer surface of the rotary cylinder 6 by the first pin 11, the vertical movement of the lens group 9 is driven by the second pin 14 in the focus inclined groove 7 to focus, thereby achieving the effect of focusing in a short time, and the purpose of rapid focusing is achieved, the outer surface of the rotary cylinder 6 is provided with the focus inclined grooves 7, the number of the limit flat grooves 8 is three, the three limit flat grooves 8 are uniformly distributed on the surface of the rotary cylinder 6, the lens group 9 is clamped in the lens group guide groove 2, the outer surface of the lens group 9 is provided with the guide block 15, the guide block 15 is matched with the lens group guide groove 2 for use, the outer surface of the lens group 9 is provided with the group boss 10, the fixed cylinder 1 is fixedly connected by the first pin 11, the screw 12 and the nut 13 through the pin positioning hole 3, the second pin 14 is inserted into the group boss 10 on the outer surface of the lens group 9 through the focus inclined groove 7 on the outer surface of the rotary cylinder 6 for fixing, the group boss 10 is installed in the focusing chute 7, and the group boss 10 is fixedly connected with the second pin 14 through a screw 12.

When in use, the structure is fixed on a photographic device by screws 12 through fixing holes 5 on the surface of a fixing block 4, then the inner wall of a rotary cylinder 6 is sleeved with the outer surface of a fixed cylinder 1, three screw caps 13 are pressed into pin positioning holes 3 on the outer surface of the fixed cylinder 1, three first pins 11 and three screws 12 are locked, a lens group 9 is inserted into a lens group guide groove 2 in the fixed cylinder 1, three second pins 14 are inserted into a group boss 10 on the outer surface of the lens group 9 through a focusing inclined groove 7 of the rotary cylinder 6, then the three screws 12 are locked for fixing, thereby improving the focusing stability, a limiting flat groove 8 and a focusing inclined groove 7 are arranged on the cylindrical surface of the rotary cylinder 6, the width of the limiting flat groove 8 is 0-0.01MM larger than the diameter of the pins, the groove length can be set according to the angle required for rotating the rotary cylinder 6, and the angle range is 0-110 degrees, the function of the device is used for limiting the revolving drum 6 to move up and down after the pin is installed, the rotation adjusting function can be realized by circular motion, the groove is inclined to the opposite surface to form a certain angle, so that the distance between the opposite surfaces of the lens group 9 driven by the second pin 14 is changed, focusing is realized, the revolving drum 6 is limited to move up and down in the limit flat groove 8 on the outer surface of the revolving drum 6 by the first pin 11, the lens group 9 is driven by the second pin 14 to move up and down in the focusing chute 7 for focusing, when the device is not used, the screw 12 is removed through the fixing hole 5, and the structure is separated from the photographic device.

The utility model discloses a theory of operation and beneficial effect: the manual focusing lens structure has the effect of fast focusing through the arrangement of the rotary cylinder 6, the limit flat groove 8 and the focusing chute 7 are arranged on the cylindrical surface of the rotary cylinder 6 in the use process through the matching arrangement of the limit flat groove 8 and the first pin 11, the width of the limit flat groove 8 is 0-0.01MM larger than the diameter of the pin, the opposite surfaces of the groove are inclined to form a certain angle, so that the second pin 14 drives the distance of the opposite surfaces of the lens group 9 to change, thereby realizing focusing, the first pin 11 limits the rotary cylinder 6 to move up and down in the limit flat groove 8 on the outer surface of the rotary cylinder 6, and the second pin 14 drives the lens group 9 to move up and down in the focusing chute 7 for focusing, thereby achieving the focusing effect in a short time, achieving the aim of fast focusing, and the manual focusing lens structure has the focusing stable effect through the arrangement of the fixed cylinder 1, through the cooperation setting of fixed cylinder 1 and fixed block 4, can cup joint the inner wall of rotary cylinder 6 in the surface of fixed cylinder 1 at the in-process that uses, in the pin locating hole 3 of pressing into fixed cylinder 1 surface with three nut 13, lock three first pin 11 and three screw 12, insert the lens group guide way 2 of fixed cylinder 1 inside with lens group 9, insert three second pin 14 on the group boss 10 of lens group 9 surface through rotary cylinder 6's focusing chute 7 and then lock three screw 12 and fix, four fixed orifices 5 on fixed cylinder 1 one side fixed connection's fixed block 4 pass through screw 12 and fix fixed cylinder 1 on photographic equipment, thereby played the effect of stability when improving the focus, the stable mesh of focus has been reached.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A manual focus lens structure includes a fixed barrel (1), characterized in that: lens crowd guide way (2) have been seted up to the inside of solid fixed cylinder (1), pin locating hole (3) have been seted up to the surface of solid fixed cylinder, the bottom fixedly connected with fixed block (4) of solid fixed cylinder (1), the surface of fixed block (4) is equipped with fixed orifices (5), revolving cylinder (6) have been cup jointed to the surface of solid fixed cylinder (1), revolving cylinder's (6) surface has been seted up and has been focused chute (7), spacing plain groove (8) have been seted up to the below of focusing chute (7), the inside joint of lens crowd guide way (2) has lens group (9), the surface of lens group (9) is provided with group boss (10).

2. A manual focus lens structure according to claim 1, wherein: the number of the limiting flat grooves (8) is three, and the three limiting flat grooves are uniformly distributed on the surface of the rotary drum (6).

3. A manual focus lens structure according to claim 1, wherein: the fixed cylinder (1) is fixedly connected through a pin positioning hole (3) by a first pin (11), a screw (12) and a nut (13), and a second pin (14) is inserted into a group boss (10) on the outer surface of the lens group (9) for fixing through a focusing inclined groove (7) on the outer surface of the rotary cylinder (6).

4. A manual focus lens structure according to claim 1, wherein: the number of the lens group guide grooves (2) is three, and the three lens group guide grooves (2) are uniformly distributed in the fixed cylinder (1) at 120 degrees.

5. A manual focus lens structure according to claim 1, wherein: the group boss (10) is arranged in the focusing chute (7), and the group boss (10) is fixedly connected with a second pin (14) through a screw (12).

6. A manual focus lens structure according to claim 1, wherein: the outer surface of the lens group (9) is provided with a guide block (15), and the guide block (15) is matched with the lens group guide groove (2) for use.