CN116184609B - External directional high-precision focusing ring of camera lens - Google Patents
External directional high-precision focusing ring of camera lens Download PDFInfo
- Publication number
- CN116184609B CN116184609B CN202310212731.1A CN202310212731A CN116184609B CN 116184609 B CN116184609 B CN 116184609B CN 202310212731 A CN202310212731 A CN 202310212731A CN 116184609 B CN116184609 B CN 116184609B
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- cylinder
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- lens
- fixed
- interface
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- 238000013461 design Methods 0.000 claims description 4
- 230000026058 directional locomotion Effects 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000008033 biological extinction Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000003384 imaging method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
Abstract
The invention discloses a directional post Jiao Diaojiao ring externally connected with a lens, which belongs to the technical field of industrial cameras and comprises a fixed cylinder, a connecting cylinder, a shading cylinder, a spiral outer cylinder, a spiral inner cylinder, locking nails, roller screws, screws and an interface. The connecting cylinder is used for connecting and fixing the lens, and the straight groove of the fixing cylinder is designed to enable the roller screw to move up and down in the groove in a directional way, so that the connecting cylinder, the fixing cylinder and the spiral outer cylinder are combined through the roller screw; the spiral inner cylinder can axially rotate through the cooperation of the spiral outer cylinder; the interface cylinder and the fixed cylinder are locked and limited; the shading cylinder is connected with the interface cylinder, and the shading cylinder reduces the reflection of the inner wall light through surface extinction treatment. The whole structure is used for connecting the lens to carry out focusing after combination, the direction of the lens is fixed in the focusing process, the phenomenon that the lens rotates along with the focusing rotation in the prior art is replaced, the direction of the lens to be fixed can be locked in advance, and the lens does not need to be rotated after focusing is completed. And the efficiency of client machine adjustment and installation is improved.
Description
Technical Field
The invention relates to the technical field of industrial cameras, in particular to a directional high-precision focusing ring externally connected with a lens.
Background
Under the high-speed development of lens technology, the types of lenses are more and more diversified, the market competitiveness is more and more high-precision equipment is basically imaged by a plurality of lenses, most of the lenses have no focusing function, the lenses rotate along with the focusing function of an external focusing ring in the past, the direction of the lenses is changed, and the directional focusing ring solves the problem of non-orientation.
The requirement of high precision of the equipment is limited in space, the position direction of the lens is required, and the same direction is required possibly due to the requirement of beautiful appearance;
the number of lenses used in the equipment is possibly large, the gap between the lenses is small, the phenomenon that the direction of the lenses needs to be fixed and rotation cannot be caused when the lenses possibly interfere with obstacles is avoided;
and a line scanning lens which is applied to high precision in test equipment, wherein the corresponding connection is a line camera, and the line array is in fine bar imaging. The method has the advantages that the optimal imaging direction of the lens is selected for focusing imaging due to high precision requirement, the lens is required to be kept consistent in direction and cannot rotate, meanwhile, when the object distance and the back focus are required to be adjusted according to different multiplying power requirements of equipment, the conventional focusing ring focuses, and the direction of the lens is changed along with focusing rotation, so that the optimal imaging position of the lens is separated; if the directional focusing ring is used, the direction of the lens is not changed and the lens is not separated from the optimal imaging position when the directional focusing ring moves in the stroke.
Disclosure of Invention
The invention aims to provide a directional high-precision focusing ring externally connected with a lens, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the directional high-precision focusing ring externally connected with the lens comprises a connecting cylinder, a fixed cylinder, a spiral outer cylinder, a spiral inner cylinder, a roller screw, an interface cylinder, a shading cylinder and a screw; the fixed cylinder, the connecting cylinder and the spiral outer cylinder are connected in series through the roller screw, the connecting cylinder is located on the inner side, the fixed cylinder is located at the middle position, the spiral outer cylinder is located on the outer side, the roller screw is fixed in the connecting cylinder, the roller screw can slide in a groove of the fixed cylinder, the spiral outer cylinder and the spiral inner cylinder are matched to drive the spiral outer cylinder to move up and down, the interface cylinder is provided with threads matched with the fixed cylinder and used for limiting the spiral inner cylinder, and one side of the interface cylinder is provided with the shading cylinder.
As a further technical scheme of the invention: three threaded holes are uniformly distributed on the outer side of the upper end of the connecting cylinder, three uniformly distributed straight grooves are designed on the fixing cylinder, three through holes are uniformly distributed on the outer side of the threaded outer cylinder, and the roller screws sequentially penetrate through the outer side holes of the threaded outer cylinder, the straight grooves of the fixing cylinder and the outer side screw holes of the locking connecting cylinder.
As a further technical scheme of the invention: the roller screw slides in the straight groove of the fixed cylinder by moving the spiral outer cylinder up and down, and the spiral outer cylinder is driven to move by the spiral inner cylinder, so that directional movement is realized.
As a further technical scheme of the invention: the interface cylinder is twisted into the spiral inner cylinder to limit.
As a further technical scheme of the invention: the camera can be externally connected through the interface cylinder, and the rear focus of the lens can be matched with the connecting rings with different heights.
As a further technical scheme of the invention: the device also comprises a screw for locking after focusing.
As a further technical scheme of the invention: the spiral outer cylinder and the spiral inner cylinder are matched by using 5 threads, and the matching movement amount is 0.01mm-0.03mm.
As a further technical scheme of the invention: the spiral inner cylinder rotates for one circle, the movement lead of the spiral inner cylinder is 12.5mm, and the lead design size depends on the requirement on the adjustment precision of the lens.
Compared with the prior art, the invention has the beneficial effects that:
the invention replaces the phenomenon that the lens rotates along with the focusing rotation in the prior art, can lock the direction of the lens to be fixed in advance, and does not need to rotate the lens after focusing. And the efficiency of client machine adjustment and installation is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of an externally-connected directional focus ring shortening;
FIG. 2 is a schematic diagram of the combination of the connecting cylinder, the fixed cylinder and the spiral outer cylinder in the external directional focusing ring;
FIG. 3 is a schematic sectional view of a combination of a connecting cylinder, a fixed cylinder and a spiral outer cylinder in an externally-connected directional focusing ring;
FIG. 4 is a schematic view of a connecting barrel in an externally-connected directional focus ring;
FIG. 5 is a schematic view of a stationary cartridge in an externally-connected directional focus ring;
FIG. 6 is a schematic view of a spiral outer barrel in an externally-connected directional focusing ring;
FIG. 7 is a schematic view of a spiral inner barrel in an externally-connected directional focus ring;
FIG. 8 is a schematic cross-sectional view of an extension of an externally-connected directional focus ring;
fig. 9 is a schematic view of an external directional focusing ring connection lens.
In the figure: the device comprises a connecting cylinder-1, a fixed cylinder-2, a spiral outer cylinder-3, a roller screw-4, a spiral inner cylinder-5, an interface cylinder-6, a shading cylinder-7 and a screw-8.
Description of the embodiments
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the external directional focusing ring of the lens comprises a connecting cylinder 1, a fixed cylinder 2, a spiral outer cylinder 3, a spiral inner cylinder 5, a roller screw 4, an interface cylinder 6, a shading cylinder 7 and a screw 8; the fixed cylinder 2, the connecting cylinder 1 and the spiral outer cylinder 3 are connected in series through the roller screw 4, the connecting cylinder 1 is positioned at the inner side, the fixed cylinder 2 is positioned at the middle position, the spiral outer cylinder 3 is positioned at the outer side, and the roller screw 4 is fixed in the connecting cylinder 1, so that the roller screw 4 can slide in a groove of the fixed cylinder 2. The spiral outer cylinder 3 and the spiral inner cylinder 5 are matched to drive the spiral outer cylinder 3 to move up and down. The interface cylinder 6 is designed to be matched with the fixed cylinder 2, and is provided with a limit spiral inner cylinder 5.
The working principle is as follows:
as shown in fig. 2 to 6, the fixed cylinder 2 is designed with an axial chute, and the length of the chute is designed according to the moving height; the connecting cylinder 1 is matched with a design screw hole of the chute, and the position of the connecting cylinder is overlapped with the middle position of the chute; the spiral outer cylinder 3 is also matched with the chute to form a through hole, and is overlapped with the middle position of the chute; 3 screw holes A1 of the connecting cylinder 2 are uniformly distributed on the outer side; 3 sliding grooves B1 of the fixed cylinder 2 are uniformly distributed; 3 through holes C1 of the spiral outer cylinder 3 are uniformly distributed. The roller screw passes through C1 and B1 in turn and then locks A1, thereby forming the principle of directional actuation.
The lead for the directional movement shown in fig. 4 is indicated by a scale A2, and the movement position can be clearly confirmed; the A3 threaded hole is an interface connected with the lens, and the design can be carried out according to the interface of the lens.
As shown in fig. 6 and 7, one spiral outer cylinder 3 and the other spiral inner cylinder 5; the two are matched by inner and outer multi-head screws. Mainly causes the spiral inner cylinder 5 to rotate so as to drive the spiral outer cylinder 3 to move up and down to realize the whole directional focusing. The accuracy of the directional movement amount is related to the processing parameters of the spiral inner cylinder 5 and the spiral outer cylinder 3.
Fig. 1 and 8 show the distance the connecting cylinder 1 moves, which is the longest and shortest distance, respectively, of the present invention.
The interface cylinder 6 and the fixed cylinder 2 shown in fig. 1 are in threaded engagement to limit the spiral outer cylinder 5, and the other end is a threaded port for butting other equipment; the shading cylinder 7 is used for carrying out extinction treatment on the surface, and is locked in to enable the inner wall to reduce light reflection; the screw 8 is used for locking after focusing.
Fig. 9 shows an application example, the connecting cylinder 1 is connected with a lens locking device, the interface cylinder 6 is connected with a camera, focusing is performed through a focusing device, and the whole process is completed through fixing and locking through a screw 8 after focusing.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative 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.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. The directional high-precision focusing ring externally connected with the lens comprises a connecting cylinder, a fixed cylinder, a spiral outer cylinder, a spiral inner cylinder, a roller screw, an interface cylinder, a shading cylinder and a screw; the light shielding device is characterized in that the fixed cylinder, the connecting cylinder and the spiral outer cylinder are connected in series through roller screws, the connecting cylinder is positioned at the inner side, the fixed cylinder is positioned at the middle position, the spiral outer cylinder is positioned at the outer side, the roller screws are fixed in the connecting cylinder, the roller screws can slide in the fixed cylinder grooves, the spiral outer cylinder and the spiral inner cylinder are matched to drive the spiral outer cylinder to move up and down, the interface cylinder is provided with threads matched with the fixed cylinder and used for limiting the spiral inner cylinder, and one side of the interface cylinder is provided with a light shielding cylinder;
three threaded holes are uniformly distributed on the outer side of the upper end of the connecting cylinder, three uniformly distributed straight grooves are designed on the fixing cylinder, three through holes are uniformly distributed on the outer side of the threaded outer cylinder, and the through holes sequentially penetrate through the outer side holes of the threaded outer cylinder, the straight grooves of the fixing cylinder and the outer side screw holes of the locking connecting cylinder through roller screws;
the roller screw slides in the straight groove of the fixed cylinder by moving the spiral outer cylinder up and down, and the spiral outer cylinder is driven to move by the spiral inner cylinder, so that directional movement is realized.
2. The externally-connected directional high-precision focusing ring of the lens according to claim 1, wherein the limiting is performed by twisting the interface cylinder into the spiral inner cylinder.
3. The externally-connected directional high-precision focusing ring of the lens according to claim 1, wherein an externally-connected camera can be realized through the interface cylinder, and the rear focus of the lens can be matched with the connecting rings with different heights.
4. The lens-circumscribed directional high-precision focusing ring of claim 1, further comprising a screw for locking after focusing.
5. The externally-connected directional high-precision focusing ring of the lens according to claim 1, wherein the spiral outer cylinder and the spiral inner cylinder are matched by using 5 threads, and the matching shifting amount is 0.01mm-0.03mm.
6. The externally-connected directional high-precision focusing ring of the lens according to claim 1, wherein the movement lead of the spiral inner cylinder is 12.5mm after one circle of rotation, and the lead design size depends on the requirement on the adjustment precision of the lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310212731.1A CN116184609B (en) | 2023-03-08 | 2023-03-08 | External directional high-precision focusing ring of camera lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310212731.1A CN116184609B (en) | 2023-03-08 | 2023-03-08 | External directional high-precision focusing ring of camera lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116184609A CN116184609A (en) | 2023-05-30 |
| CN116184609B true CN116184609B (en) | 2023-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310212731.1A Active CN116184609B (en) | 2023-03-08 | 2023-03-08 | External directional high-precision focusing ring of camera lens |
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| Country | Link |
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| CN (1) | CN116184609B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB546881A (en) * | 1941-06-07 | 1942-08-04 | Kodak Ltd | Improvements in or relating to depth of focus indicators for photographic cameras |
| GB793179A (en) * | 1956-01-13 | 1958-04-09 | Hans Deckel | Improvements in or relating to photographic cameras having interchangeable lens units |
| US4764783A (en) * | 1986-10-29 | 1988-08-16 | Asahi Kogaku Kogyo Kabushiki Kaisha | Lens focusing position adjusting mechanism |
| CN204536706U (en) * | 2015-03-18 | 2015-08-05 | 广州长步道光电科技有限公司 | Camera lens connecting cylinder |
| CN108107538A (en) * | 2018-02-07 | 2018-06-01 | 嘉兴中润光学科技有限公司 | The focus control of Manual focusing camera lens |
| CN215867297U (en) * | 2021-06-04 | 2022-02-18 | 江西凤凰光学科技有限公司 | Lens focusing device |
| CN216434502U (en) * | 2021-12-22 | 2022-05-03 | 洛阳拜波赫光电科技有限公司 | Built-in thread-driven adjustable-focus lens structure |
| CN217739585U (en) * | 2022-08-04 | 2022-11-04 | 广州市小萤成像技术有限公司 | Multi-head thread focusing structure of lens |
-
2023
- 2023-03-08 CN CN202310212731.1A patent/CN116184609B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB546881A (en) * | 1941-06-07 | 1942-08-04 | Kodak Ltd | Improvements in or relating to depth of focus indicators for photographic cameras |
| GB793179A (en) * | 1956-01-13 | 1958-04-09 | Hans Deckel | Improvements in or relating to photographic cameras having interchangeable lens units |
| US4764783A (en) * | 1986-10-29 | 1988-08-16 | Asahi Kogaku Kogyo Kabushiki Kaisha | Lens focusing position adjusting mechanism |
| CN204536706U (en) * | 2015-03-18 | 2015-08-05 | 广州长步道光电科技有限公司 | Camera lens connecting cylinder |
| CN108107538A (en) * | 2018-02-07 | 2018-06-01 | 嘉兴中润光学科技有限公司 | The focus control of Manual focusing camera lens |
| CN215867297U (en) * | 2021-06-04 | 2022-02-18 | 江西凤凰光学科技有限公司 | Lens focusing device |
| CN216434502U (en) * | 2021-12-22 | 2022-05-03 | 洛阳拜波赫光电科技有限公司 | Built-in thread-driven adjustable-focus lens structure |
| CN217739585U (en) * | 2022-08-04 | 2022-11-04 | 广州市小萤成像技术有限公司 | Multi-head thread focusing structure of lens |
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| CN116184609A (en) | 2023-05-30 |
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