CN219778066U - Focal length adjusting structure of camera - Google Patents
Focal length adjusting structure of camera Download PDFInfo
- Publication number
- CN219778066U CN219778066U CN202321188077.7U CN202321188077U CN219778066U CN 219778066 U CN219778066 U CN 219778066U CN 202321188077 U CN202321188077 U CN 202321188077U CN 219778066 U CN219778066 U CN 219778066U
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- adjusting sleeve
- lens
- sleeve
- photosensitive
- guide
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- 206010070834 Sensitisation Diseases 0.000 claims abstract description 18
- 230000008313 sensitization Effects 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 210000001503 joint Anatomy 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 8
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of focal length adjustment, and particularly relates to a camera focal length adjustment structure, which comprises a hollow guide sleeve, wherein the inner side of the hollow guide sleeve is connected with a lens assembly and a photosensitive assembly in a sliding manner, a guide groove is formed in the body of the hollow guide sleeve in the radial direction, guide strips penetrating through the guide groove are arranged on the outer sides of the lens assembly and the photosensitive assembly, external threads are arranged at one end, extending out of the guide groove, of the guide strips, and the external threads of the guide strips on the lens assembly are opposite in rotation direction to the external threads of the guide strips on the photosensitive assembly; the outside cover of hollow uide bushing is equipped with the image distance adjustment sleeve, the body outside of hollow uide bushing has been seted up and has been adjusted the corresponding spacing groove of cover with the image distance, and this device is when adjusting the camera focus, rotates image distance adjustment sleeve and can remove lens subassembly and sensitization subassembly simultaneously, compares in single removal sensitization subassembly, removes lens subassembly and sensitization subassembly simultaneously, can carry out faster regulation to the image distance.
Description
Technical Field
The utility model relates to the technical field of focal length adjustment, in particular to a camera focal length adjustment structure.
Background
The generalized camera focal length refers to the distance from the center of the lens to the plane of the photosensitive element (e.g., CMOS). The focal length is an important parameter index on the camera lens, and can determine the size of the view of the framing composition when taking a picture. That is, the longer the focal length is, the narrower the shooting field of view of the camera is, and the smaller the clear range is; the shorter the focal length, the wider the field of view of the camera, and the greater the clear range.
The camera focal length adjustment (focusing) refers to changing the image distance, and the distance from the center of the lens to the photosensitive element can be changed by adjusting the distance between the imaging surface and the lens, so that the image distance is changed; the existing cameras are mostly used for adjusting the image distance by moving the photosensitive assembly, and the stability of the photosensitive assembly needs to be maintained when the photosensitive assembly is adjusted, namely the photosensitive assembly needs to be maintained at a lower speed when moving, which is not beneficial to the rapid adjustment of the image distance; the movable distance of the photosensitive assembly is also affected by the body type of the camera, and when the body type of the camera is smaller, the adjustable range of the image distance of the camera is smaller, which is not beneficial to clear shooting of long-range scenes.
Disclosure of Invention
The present utility model is directed to a camera focal length adjusting structure, which solves the problem that the existing camera provided in the background art only moves the photosensitive assembly when performing focal length adjustment.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the camera focal length adjusting structure comprises a hollow guide sleeve, wherein the inner side of the hollow guide sleeve is connected with a lens assembly and a photosensitive assembly in a sliding manner, a guide groove is formed in the body of the hollow guide sleeve in the radial direction, guide strips penetrating through the guide groove are arranged on the outer sides of the lens assembly and the photosensitive assembly, external threads are formed at one ends, extending out of the guide groove, of the guide strips, and the external threads of the guide strips on the lens assembly are opposite to those of the guide strips on the photosensitive assembly;
the outside cover of hollow uide bushing is equipped with the image distance adjustment sleeve, the body outside of hollow uide bushing has been seted up with the corresponding spacing groove of image distance adjustment sleeve, the adjustment groove has been seted up to the inboard of image distance adjustment sleeve, the adjustment groove includes two screw thread grooves that revolve to opposite directions, two the screw thread groove is corresponding with camera lens subassembly and sensitization subassembly respectively.
Preferably, the image distance adjusting sleeve comprises a photosensitive adjusting sleeve and a lens adjusting sleeve, the photosensitive adjusting sleeve corresponds to the photosensitive assembly, and the lens adjusting sleeve corresponds to the lens assembly.
Preferably, the two thread grooves are respectively positioned at the inner sides of the photosensitive adjusting sleeve and the lens adjusting sleeve, and the pitch of the thread groove on the photosensitive adjusting sleeve is smaller than that of the thread groove on the lens adjusting sleeve.
Preferably, the photosensitive adjusting sleeve and the lens adjusting sleeve are respectively provided with a synchronizing ring at one side close to each other, the outer sides of the two synchronizing rings are respectively provided with a synchronizing bar, the image distance adjusting sleeve further comprises a butt joint sleeve, and the inner side of the butt joint sleeve is provided with a synchronizing groove corresponding to the synchronizing bar.
Preferably, a sealing groove is formed in the inner side of the image distance adjusting sleeve, a sealing ring is installed in the inner side of the sealing groove, and the sealing ring is sleeved on the outer side of the hollow guide sleeve.
Preferably, a limiting pad is arranged in the inner cavity of the hollow guide sleeve, and the limiting pad is positioned between the lens assembly and the photosensitive assembly.
Preferably, dustproof glass is arranged on the left side of the inner cavity of the hollow guide sleeve, and the dustproof glass is arranged on the left side of the lens assembly.
Compared with the prior art, the utility model has the beneficial effects that:
1) When the device adjusts the focal length of the camera, the lens component and the photosensitive component can be moved simultaneously by rotating the image distance adjusting sleeve, and compared with the situation that the photosensitive component is moved independently, the lens component and the photosensitive component are moved simultaneously, so that the image distance can be adjusted more quickly;
2) The lens component and the photosensitive component in the device can move, and compared with the relation between the movable distance of the photosensitive component and the camera body type, the movable distance of the lens component has small influence on the size of the camera body type; the lens component and the photosensitive component can move, so that the camera can have a larger image distance adjusting range under a smaller body type.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
FIG. 3 is an enlarged schematic view of the structure A in FIG. 2 according to the present utility model;
FIG. 4 is a schematic view of the hollow guide sleeve structure of the present utility model;
fig. 5 is a schematic diagram of an exploded structure of the image distance adjusting sleeve of the present utility model.
In the figure: 1 hollow guide sleeve, 2 dustproof glass, 3 image distance adjusting sleeve, 31 sensitization adjusting sleeve, 32 lens adjusting sleeve, 33 butt joint sleeve, 34 synchronizing ring, 35 synchronizing bar, 36 synchronizing groove, 4 lens subassembly, 5 sensitization subassembly, 6 guide bar, 7 sealing washer.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Examples
Referring to fig. 1-5, the present utility model provides a technical solution: the utility model provides a camera focal length adjusting structure, including hollow uide bushing 1, the inboard of hollow uide bushing 1 is provided with camera lens subassembly 4 and sensitization subassembly 5, camera lens subassembly 4 and sensitization subassembly 5 can slide about the axis of hollow uide bushing 1, camera lens subassembly 4 is located the left side of sensitization subassembly 5, guide slot 11 has been seted up on the body of hollow uide bushing 1 in radial, guide slot 11 includes the elongated slot that corresponds with camera lens subassembly 4 and the short groove that corresponds with sensitization subassembly 5, elongated slot and short groove even distribution are in the outside of hollow uide bushing 1, camera lens subassembly 4 and the outside of sensitization subassembly 5 all are provided with guide bar 6, guide bar 6 and guide slot 11 one-to-one, the quantity of guide bar 6 is at least three on camera lens subassembly 4 or the sensitization subassembly 5, guide bar 6 on the outside of camera lens subassembly 4 runs through the elongated slot, guide bar 6 on the outside of sensitization subassembly 5 runs through the short groove, the restriction of guide bar 6 makes camera lens subassembly 4 and sensitization subassembly 5 unable rotation only can carry out left and right translation, guide bar 6 is run through guide slot 11 and be provided with the external screw thread on guide bar 6, guide bar 6 is the screw thread on the left-hand screw thread of camera lens subassembly 6 is the screw thread on the sensitization subassembly is the screw thread on the right-hand; the outside cover of hollow uide bushing 1 is equipped with image distance adjusting sleeve 3, the body outside of hollow uide bushing 1 has been seted up with the corresponding spacing groove 12 of image distance adjusting sleeve 3, spacing is carried out spacing to image distance adjusting sleeve 3 through spacing groove 12, make image distance adjusting sleeve 3 can only rotate, can not translate, the adjustment groove has been seted up to the inboard of image distance adjusting sleeve 3, the adjustment groove includes two screw thread grooves that revolve opposite to, left-hand thread groove and right-hand thread groove promptly, left-hand thread groove corresponds with the left-hand thread of guide bar 6 on the sensitization subassembly 5, right-hand thread groove corresponds with the right-hand thread of guide bar 6 on the lens subassembly 4, rotate image distance adjusting sleeve 3, image distance adjusting sleeve 3 can drive lens subassembly 4 and sensitization subassembly 5 to be close to or keep away from each other.
The inner cavity of the hollow guide sleeve 1 is provided with a limiting pad 13, the limiting pad 13 is positioned between the lens assembly 4 and the photosensitive assembly 5, and the lens assembly 4 and the photosensitive assembly 5 are limited through the limiting pad 13 so as to avoid collision between the lens assembly 4 and the photosensitive assembly 5 which are close to each other.
The left end of the inner cavity of the hollow guide sleeve 1 is provided with dustproof glass 2, the dustproof glass 2 is arranged at the left end of the lens assembly 4, and dust is prevented from entering the inner side of the hollow guide sleeve 1 through the protection of the dustproof glass 2; the right end of the hollow guide sleeve 1 is fixed on the camera.
The seal groove is arranged on the inner side of the image distance adjusting sleeve 3, the seal ring 7 is arranged on the inner side of the seal groove, the seal ring 7 is sleeved on the outer side of the hollow guide sleeve 1, three positions are distributed on the seal ring 7, and dust is prevented from entering the inner side of the hollow guide sleeve 1 through the seal of the seal ring 7 on the inner side of the left end of the image distance adjusting sleeve 3, the inner side of the right end and the inner side in the middle of the image distance adjusting sleeve 3.
The image distance adjusting sleeve 3 comprises a photosensitive adjusting sleeve 31 and a lens adjusting sleeve 32, the photosensitive adjusting sleeve 31 corresponds to the photosensitive assembly 5, the lens adjusting sleeve 32 corresponds to the lens assembly 4, the photosensitive assembly 5 can be moved by rotating the photosensitive adjusting sleeve 31, the lens assembly 4 can be moved by rotating the lens adjusting sleeve 32, and the focal length of the camera can be adjusted by moving both the photosensitive assembly 5 and the lens assembly 4.
The two thread grooves are respectively positioned on the inner sides of the photosensitive adjusting sleeve 31 and the lens adjusting sleeve 32, the pitch of the thread groove on the photosensitive adjusting sleeve 31 is smaller than that of the thread groove on the lens adjusting sleeve 32, the lens adjusting sleeve 32 is rotated to rapidly move the lens assembly 4, so that the focal length is rapidly adjusted, the photosensitive adjusting sleeve 31 is rotated to slowly move the photosensitive assembly 5, and the focal length of a camera is accurately adjusted.
The photosensitive adjusting sleeve 31 and the lens adjusting sleeve 32 are respectively provided with a synchronizing ring 34 at one side close to each other, the length of the synchronizing rings 34 on the photosensitive adjusting sleeve 31 is about twice the length of the synchronizing rings 34 on the lens adjusting sleeve 32, the outer sides of the two synchronizing rings 34 are respectively provided with a synchronizing bar 35, the image distance adjusting sleeve 3 further comprises a butt joint sleeve 33, the inner side of the butt joint sleeve 33 is provided with a synchronizing groove 36 corresponding to the synchronizing bar 35, the butt joint sleeve 33 is sleeved on the outer side of the synchronizing rings 34 and can slide left and right, and when the butt joint sleeve 33 is completely positioned on the outer side of the synchronizing rings 34 on the photosensitive adjusting sleeve 31, the photosensitive adjusting sleeve 31 and the lens adjusting sleeve 32 can rotate independently; when the butt joint sleeve 33 is located on the outer side of the synchronizing ring 34 on the lens adjusting sleeve 32, a part of the butt joint sleeve 33 is located on the outer side of the synchronizing ring 34 on the photosensitive adjusting sleeve 31, and the image distance adjusting sleeve 3 is rotated at this time, so that the photosensitive adjusting sleeve 31 and the lens adjusting sleeve 32 can synchronously rotate through linkage of the butt joint sleeve 33.
Working principle: when only the lens assembly 4 or the photosensitive assembly 5 is adjusted, the butt joint sleeve 33 is moved, so that the butt joint sleeve 33 is moved to the right limit, and the butt joint sleeve 33 is completely positioned on the outer side of the synchronizing ring 34 on the photosensitive adjusting sleeve 31; the photosensitive adjusting sleeve 31 is rotated, and the photosensitive adjusting sleeve 31 drives the photosensitive assembly 5 to move through the guide strip 6; rotating the lens adjusting sleeve 32, the lens adjusting sleeve 32 drives the lens assembly 4 to move through the guide strip 6;
when the lens assembly 4 and the photosensitive assembly 5 need to be adjusted simultaneously, the butt joint sleeve 33 is moved, so that the butt joint sleeve 33 is moved to the left limit, at the moment, the butt joint sleeve 33 is sleeved on the outer sides of the two synchronous rings 34, the lens adjusting sleeve 32 (or the photosensitive adjusting sleeve 31) is rotated, the lens adjusting sleeve 32 (or the photosensitive adjusting sleeve 31) can drive the photosensitive adjusting sleeve 31 (or the lens adjusting sleeve 32) to synchronously rotate through the butt joint sleeve 33, and the synchronous rotation of the photosensitive adjusting sleeve 31 and the lens adjusting sleeve 32 can drive the lens assembly 4 and the photosensitive assembly 5 to simultaneously move through the guide strip 6.
While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but 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 utility model 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.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a camera focal length adjustment structure, includes hollow uide bushing (1), the inboard sliding connection of hollow uide bushing (1) has lens subassembly (4) and sensitization subassembly (5), its characterized in that: the body of the hollow guide sleeve (1) is provided with a guide groove (11) in the radial direction, the outsides of the lens assembly (4) and the photosensitive assembly (5) are respectively provided with a guide strip (6) penetrating through the guide groove (11), one end of the guide strip (6) extending out of the guide groove (11) is provided with external threads, and the external threads of the guide strip (6) on the lens assembly (4) are opposite to the external threads of the guide strip (6) on the photosensitive assembly (5);
the outside cover of hollow uide bushing (1) is equipped with image distance adjusting sleeve (3), spacing groove (12) corresponding with image distance adjusting sleeve (3) have been seted up in the body outside of hollow uide bushing (1), the adjustment tank has been seted up to the inboard of image distance adjusting sleeve (3), the adjustment tank includes two screw thread grooves that revolve to opposite, two the screw thread groove is corresponding with camera lens subassembly (4) and photosensitive assembly (5) respectively.
2. A camera focus adjustment structure as defined in claim 1, wherein: the image distance adjusting sleeve (3) comprises a photosensitive adjusting sleeve (31) and a lens adjusting sleeve (32), the photosensitive adjusting sleeve (31) corresponds to the photosensitive assembly (5), and the lens adjusting sleeve (32) corresponds to the lens assembly (4).
3. A camera focus adjustment structure as defined in claim 2, wherein: the two thread grooves are respectively positioned at the inner sides of the photosensitive adjusting sleeve (31) and the lens adjusting sleeve (32), and the thread pitch of the thread groove on the photosensitive adjusting sleeve (31) is smaller than that of the thread groove on the lens adjusting sleeve (32).
4. A camera focus adjustment structure as defined in claim 2, wherein: the photographic adjusting sleeve (31) and the lens adjusting sleeve (32) are respectively provided with a synchronizing ring (34) at one side close to each other, the outer sides of the two synchronizing rings (34) are respectively provided with a synchronizing strip (35), the image distance adjusting sleeve (3) further comprises a butt joint sleeve (33), and the inner side of the butt joint sleeve (33) is provided with a synchronizing groove (36) corresponding to the synchronizing strips (35).
5. A camera focus adjustment structure as defined in claim 1, wherein: the inner side of the image distance adjusting sleeve (3) is provided with a sealing groove, the inner side of the sealing groove is provided with a sealing ring (7), and the sealing ring (7) is sleeved on the outer side of the hollow guide sleeve (1).
6. A camera focus adjustment structure as defined in claim 1, wherein: a limiting pad (13) is arranged in the inner cavity of the hollow guide sleeve (1), and the limiting pad (13) is positioned between the lens component (4) and the photosensitive component (5).
7. A camera focus adjustment structure as defined in claim 1, wherein: the left side of the inner cavity of the hollow guide sleeve (1) is provided with dustproof glass (2), and the dustproof glass (2) is arranged on the left side of the lens assembly (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321188077.7U CN219778066U (en) | 2023-05-17 | 2023-05-17 | Focal length adjusting structure of camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321188077.7U CN219778066U (en) | 2023-05-17 | 2023-05-17 | Focal length adjusting structure of camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219778066U true CN219778066U (en) | 2023-09-29 |
Family
ID=88102667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321188077.7U Active CN219778066U (en) | 2023-05-17 | 2023-05-17 | Focal length adjusting structure of camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219778066U (en) |
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2023
- 2023-05-17 CN CN202321188077.7U patent/CN219778066U/en active Active
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