CN220872748U - Core-adjusting focusing mechanism and imaging device - Google Patents
Core-adjusting focusing mechanism and imaging device Download PDFInfo
- Publication number
- CN220872748U CN220872748U CN202322547099.4U CN202322547099U CN220872748U CN 220872748 U CN220872748 U CN 220872748U CN 202322547099 U CN202322547099 U CN 202322547099U CN 220872748 U CN220872748 U CN 220872748U
- Authority
- CN
- China
- Prior art keywords
- core
- adjusting
- fine
- focusing mechanism
- fine adjustment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 51
- 238000003384 imaging method Methods 0.000 title abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model relates to the technical field of imaging equipment, and provides a core-adjusting focusing mechanism and an imaging device. The above-mentioned accent core mechanism of focusing includes: the lens barrel is arranged on the lens, the base is sleeved on the lens barrel, and the core adjusting ring is sleeved on the base; the outer wall of the lens barrel is provided with a first guide piece, the core adjusting ring is provided with a first guide groove which is in sliding fit with the first guide piece, and the first guide groove is arranged along a first direction; the fine adjustment module comprises a fine adjustment gear and fine adjustment gear teeth, wherein the fine adjustment gear teeth are arranged on the core adjustment ring, and the fine adjustment gear is in transmission connection with the fine adjustment gear teeth. The core-adjusting and focusing mechanism and the imaging device provided by the utility model can solve the defect of low adjustment precision of the core-adjusting and focusing mechanism in the prior art, and improve the adjustment precision of the core-adjusting and focusing mechanism.
Description
Technical Field
The utility model relates to the technical field of imaging equipment, in particular to a core-adjusting focusing mechanism and an imaging device.
Background
The core-adjusting focusing mechanism is a mechanism commonly used in the optical field. By changing the position of the lens or the position of some lenses in the lens, the focusing position of the lens is overlapped with the position of the image sensor of the camera, so that the effect of taking clear pictures is achieved.
In the core-adjusting focusing mechanism disclosed by the prior art, the lens is in threaded fit with the base, and the relative position of the lens is adjusted through forward or reverse rotation, so that the focusing position of the lens is overlapped with the position of the camera image sensor, and further, the focus adjustment is clear. In another core-adjusting focusing mechanism disclosed in the prior art, a base is fixedly connected with a camera side, a lens and a lens barrel are in threaded fit and fixed, and the relative position of the lens is adjusted through the expansion and contraction of a push rod, so that the focusing position of the lens is overlapped with the position of a camera image sensor, and the core-adjusting focusing is clear. However, the two core-adjusting focusing mechanisms adopt a manual mode, and for a lens with larger matched depth of field, screw thread adjustment and push rod adjustment can meet the core-adjusting focusing requirement, but cannot meet the field with higher requirement on adjusting precision.
Therefore, a core-adjusting focusing mechanism is needed to solve the above problems.
Disclosure of utility model
The utility model provides a core-adjusting and focusing mechanism and an imaging device, which are used for solving the defect of low adjustment precision of the core-adjusting and focusing mechanism in the prior art and improving the adjustment precision of the core-adjusting and focusing mechanism.
In one aspect, the present utility model provides a core-adjusting and focusing mechanism comprising: the lens barrel is arranged on the lens, the base is sleeved on the lens barrel, and the core adjusting ring is sleeved on the base;
The outer wall of the lens barrel is provided with a first guide piece, the core adjusting ring is provided with a first guide groove which is in sliding fit with the first guide piece, and the first guide groove is arranged along a first direction;
The fine adjustment module comprises a fine adjustment gear and fine adjustment gear teeth, wherein the fine adjustment gear teeth are arranged on the core adjustment ring, and the fine adjustment gear is in transmission connection with the fine adjustment gear teeth.
According to the core adjusting and focusing mechanism provided by the utility model, the outer wall of the base is provided with the second guide piece, the core adjusting ring is provided with the second guide groove which is in sliding fit with the second guide piece, and the second guide groove is arranged along the second direction.
According to the core adjusting and focusing mechanism provided by the utility model, the fine adjusting gear is arranged on the base.
According to the core adjusting and focusing mechanism provided by the utility model, the fine adjusting module further comprises a fixed block, the fixed block is arranged on the base, and the fine adjusting gear is rotatably arranged on the fixed block.
According to the core adjusting and focusing mechanism provided by the utility model, the fine adjusting module further comprises a fine adjusting plate, the fine adjusting gear teeth are arranged on the fine adjusting plate, and the fine adjusting plate is arranged on the core adjusting ring.
According to the core adjusting and focusing mechanism provided by the utility model, the fine adjusting gear teeth, the fine adjusting plate and the core adjusting ring are integrated.
According to the core adjusting and focusing mechanism provided by the utility model, the fine adjusting module further comprises an adjusting gear, the number of teeth of the adjusting gear is larger than that of the fine adjusting gear, and the adjusting gear is meshed with the fine adjusting gear and the fine adjusting gear respectively.
According to the core adjusting and focusing mechanism provided by the utility model, the fine adjusting module further comprises a handle, and the fine adjusting gear is connected with the handle.
According to the core-adjusting focusing mechanism provided by the utility model, the lens is in threaded connection with the lens barrel.
Another aspect of the utility model provides an imaging device comprising a cored-focusing mechanism as described in any of the preceding claims.
According to the core adjusting and focusing mechanism and the imaging device, the core adjusting ring can be rotated during rough adjustment, the first guide groove on the core adjusting ring applies force in the axial direction to the first guide post on the outer wall of the lens barrel to drive the lens barrel and the lens to axially move, rough adjustment is achieved, after rough adjustment is finished, the fine adjustment gear is rotated, the fine adjustment gear drives the core adjusting ring to rotate through the fine adjustment gear teeth, then the lens barrel and the lens are driven to axially move under the action of the first guide groove on the first guide post, fine adjustment is achieved, and adjustment precision of the core adjusting and focusing mechanism can be effectively improved.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a core-adjusting and focusing mechanism according to an embodiment of the present utility model;
Fig. 2 is a second schematic diagram of a core-adjusting focusing mechanism according to an embodiment of the present utility model.
Reference numerals:
1. a base; 101. a mounting part; 102. a sleeving part; 2. core adjusting ring; 201. a first guide groove; 202. a second guide groove; 3. a lens barrel; 4. a lens; 5. a first guide; 6. fine-tuning the gear; 7. finely adjusting gear teeth; 8. a second guide; 9. a fixed block; 10. a handle.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, 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 describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, 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 embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The following describes a core-adjusting focusing mechanism and an imaging device provided by the utility model with reference to fig. 1 and 2.
As shown in fig. 1 and 2, in one aspect, the present utility model provides a core-adjusting and focusing mechanism, which includes: the lens adjusting device comprises a base 1, a core adjusting ring 2, a lens cone 3, a lens 4 and a fine adjusting module, wherein the lens cone 3 is arranged on the lens 4, the base 1 is sleeved on the lens cone 3, and the core adjusting ring 2 is sleeved on the base 1; the outer wall of the lens barrel 3 is provided with a first guide piece 5, the core adjusting ring 2 is provided with a first guide groove 201 which is in sliding fit with the first guide piece 5, and the first guide groove 201 is arranged along a first direction; the fine tuning module comprises a fine tuning gear 6 and fine tuning gear teeth 7, wherein the fine tuning gear teeth 7 are arranged on the tuning core ring 2, and the fine tuning gear 6 is in transmission connection with the fine tuning gear teeth 7.
The first direction specifically refers to the oblique direction shown in fig. 1, and may be a straight line or a curved line having a certain radian, so long as the first guide member 5 can exert an axial driving action during the rotation of the corer 2.
Specifically, in this embodiment, the base 1 includes the mounting portion 101 and the fitting portion 102, the fitting portion 102 of the base 1 is fitted on the outer wall of the lens barrel 3, and the outer wall of the lens barrel 3 and the inner wall of the fitting portion 102 of the base 1 are required to operate smoothly without any obvious jamming. If the fit clearance between the two is too large, jumping, coke running and other phenomena can occur in the process of adjusting the core and focusing, so that the core adjusting and focusing effect is affected; if the fit clearance is too small, the phenomena such as jamming, abnormal assembly and the like can occur.
In some embodiments, the inner wall of the sleeve portion 102 of the base 1 and the outer wall of the lens barrel 3 may be provided with a square or special shape matching the shape, as long as the lens barrel 3 can be made to satisfy the axial movement function, which is not particularly limited in the present utility model.
In this embodiment, the core adjusting ring 2 is sleeved on the outer wall of the sleeved portion 102 of the base 1, and the inner wall of the core adjusting ring 2 and the outer wall of the sleeved portion 102 of the base 1 are matched to require smooth operation without obvious clamping, so that the core adjusting ring 2 can smoothly rotate, and the clamping phenomenon is prevented.
When in use, the base 1 and the core adjusting ring 2 are kept axially fixed relatively, the lens barrel 3 and the lens 4 are kept relatively fixed, and the base 1, the lens barrel 3 and the base 1 and the lens 4 can move relatively. Therefore, the core adjusting and focusing can be realized by adjusting the axial distance between the lens barrel 3 and the lens 4 and the base 1.
In this embodiment, the first guide 5 adopts a guide column, the guide column is disposed along a direction perpendicular to the outer wall of the lens barrel 3, and the outer wall of the first guide 5 and the first guide groove 201 cooperate to require smooth operation without obvious jamming. If the fit clearance between the two is too large, the phenomena of virtual position, incoherence in actuation and the like can occur in the core-adjusting and focusing process, so that the core-adjusting and focusing effect is affected; if the fit clearance between the two is too small, the phenomena of locking, abnormal assembly and the like can occur. The width of the first guide groove 201 may be specifically set according to the actual structural space; the length of the first guide groove 201 may be designed according to actual stroke requirements. The inclination angle of the first guide groove 201 may be designed according to the actual stroke requirement and the structural space, and the smaller the angle, the more gentle the actuation.
It is envisioned that in some embodiments, a plurality of first guide members 5 may be provided on the outer wall of the lens barrel 3 and a plurality of first guide grooves 201 may be provided on the turn-up collar 2, as long as the spatial arrangement is satisfied.
According to the core-adjusting focusing mechanism and the imaging device, during coarse adjustment, the core-adjusting ring 2 can be rotated, the first guide groove 201 on the core-adjusting ring 2 applies force in the axial direction to the first guide post on the outer wall of the lens barrel 3 to drive the lens barrel 3 and the lens 4 to axially move, coarse adjustment is achieved, after coarse adjustment is finished, the fine adjustment gear 6 is rotated, the fine adjustment gear 6 drives the core-adjusting ring 2 to rotate through the fine adjustment gear teeth 7, and then the lens barrel 3 and the lens 4 are driven to axially move under the action of the first guide groove 201 on the first guide post, fine adjustment is achieved, and adjustment precision of the core-adjusting focusing mechanism can be effectively improved.
As shown in fig. 1 and 2, in the embodiment of the present utility model, the outer wall of the sleeve portion 102 of the base 1 is provided with a second guide member 8, and the core adjustment ring 2 is provided with a second guide groove 202 slidably engaged with the second guide member 8, and the second guide groove 202 is disposed along the second direction. Through setting up second guide 8 and second guide way 202, can guarantee that core setting 2 is fixed at the axial position of rotation in-process, prevent its axial and leap, can also play guiding cooperation's effect. The width of the second guide groove 202 may be specifically set according to the actual structural space; the length of the second guiding groove 202 may be specifically set according to the actual travel requirement.
The second direction specifically refers to a horizontal circumferential direction along the outer wall of the tuning ring 2.
In this embodiment, the second guide member 8 also adopts a guide column, the guide column is disposed along a direction perpendicular to the outer wall of the sleeve portion 102 of the base 1, and the outer wall of the second guide member 8 and the second guide groove 202 cooperate to require smooth operation without explicit jamming. If the fit clearance between the two is too large, the phenomena of virtual position, incoherence in actuation and the like can occur in the core-adjusting and focusing process, so that the core-adjusting and focusing effect is affected; if the fit clearance between the two is too small, the phenomena of locking, abnormal assembly and the like can occur.
It is contemplated that in some embodiments, a plurality of second guide grooves 202 may be disposed on the tuning collar 2 along the second direction, and a plurality of second guide members 8 may be disposed on the outer wall of the sleeve portion 102 of the base 1 correspondingly.
As shown in fig. 1 and 2, in the embodiment of the present utility model, a fine adjustment gear 6 is provided to a base 1. Specifically, in this embodiment, the fine adjustment module further includes a fixing block 9, where the fixing block 9 is disposed on the base 1 and is fixed by a threaded connection, and the fine adjustment gear 6 is rotatably disposed on the fixing block 9. In this way, the fine adjustment gear 6 is convenient to install and fix, so that the fine adjustment gear 6 is convenient to be meshed and driven with the fine adjustment gear teeth 7 positioned on the sleeving part 102 of the base 1.
As shown in fig. 1 and 2, in the embodiment of the present utility model, the fine tuning module further includes a fine tuning plate, where the fine tuning gear teeth 7 are disposed, and the fine tuning plate is disposed on the tuning ring 2. Specifically, the fine adjustment plate is an arc plate, the inner surface of the fine adjustment plate is attached to the outer wall of the sleeving part 102 of the base 1, and the fine adjustment gear teeth 7 are arranged on the outer wall of the fine adjustment plate and meshed with the fine adjustment gear 6 through screw fixation. The length of the gear teeth of the fine adjustment plate can be set according to the stroke of actual requirements.
In some embodiments, a plurality of groups of mounting holes for mounting fine adjustment plates with different specifications (lengths) can be further arranged at corresponding positions of the core adjusting ring 2, so that the fine adjustment plates with different specifications (lengths) can be replaced according to different requirements.
It is contemplated that in some embodiments, the fine tuning gear teeth 7, the fine tuning plate, and the tuning collar 2 may also be integrally formed. Namely, the fine adjusting gear teeth 7 are directly arranged at the corresponding positions of the core adjusting ring 2, thereby being convenient for processing and manufacturing.
In the embodiment of the present utility model, the fine adjustment module further includes an adjusting gear (not shown in the drawings), the number of teeth of which is greater than the number of teeth of the fine adjustment gear 6, and the adjusting gear is meshed with the fine adjustment gear 6 and the fine adjustment gear teeth 7, respectively. Through setting up adjusting gear between fine tuning gear 6 and fine tuning teeth of a cogwheel 7, can further promote the regulation precision of fine tuning module to can promote output torque.
As shown in fig. 1 and 2, in the embodiment of the present utility model, the fine adjustment module further includes a handle 10, and the fine adjustment gear 6 is connected to the handle 10. Through setting up handle 10, during the use, can rotate handle 10 in order to drive the rotation of core circle 2, be convenient for fine tuning operation.
As shown in fig. 2, in the embodiment of the present utility model, the lens 4 is screwed with the lens barrel 3. Specifically, the outer wall of the end of the lens 4 is provided with external threads, and the front end of the lens barrel 3 is provided with internal threads. When the lens is installed or disassembled, the lens 4 can be directly screwed into or out of the lens barrel 3, and the disassembly and the assembly are simple.
As can be seen from the description of the above embodiments, the core-adjusting and focusing mechanism provided by the present utility model has at least the following advantages:
(1) According to the core-adjusting focusing mechanism and the imaging device, during coarse adjustment, the core-adjusting ring 2 can be rotated, the first guide groove 201 on the core-adjusting ring 2 applies force in the axial direction to the first guide post on the outer wall of the lens barrel 3 to drive the lens barrel 3 and the lens 4 to axially move, coarse adjustment is achieved, after coarse adjustment is finished, the fine adjustment gear 6 is rotated, the fine adjustment gear 6 drives the core-adjusting ring 2 to rotate through the fine adjustment gear teeth 7, and then the lens barrel 3 and the lens 4 are driven to axially move under the action of the first guide groove 201 on the first guide post, fine adjustment is achieved, and the adjustment precision of the core-adjusting focusing mechanism can be effectively improved;
(2) According to the core adjusting and focusing mechanism and the imaging device, the second guide groove 202 and the second guide piece 8 are arranged, so that the limiting and guiding effects on the core adjusting ring can be achieved, and the axial movement of the core adjusting ring can be prevented.
Another aspect of the utility model provides an imaging device comprising a coreless focusing mechanism as described in any of the embodiments above. By arranging the core adjusting and focusing mechanism in the imaging device, the precision of core adjusting and focusing of the imaging device can be improved.
It should be noted that the imaging device includes, but is not limited to, a camera, a microscopic imaging device (such as a microscope), a precision medical imaging device, and the like.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. A core-adjusting and focusing mechanism, comprising: the lens barrel is arranged on the lens, the base is sleeved on the lens barrel, and the core adjusting ring is sleeved on the base;
The outer wall of the lens barrel is provided with a first guide piece, the core adjusting ring is provided with a first guide groove which is in sliding fit with the first guide piece, and the first guide groove is arranged along a first direction;
The fine adjustment module comprises a fine adjustment gear and fine adjustment gear teeth, wherein the fine adjustment gear teeth are arranged on the core adjustment ring, and the fine adjustment gear is in transmission connection with the fine adjustment gear teeth.
2. The core-adjusting and focusing mechanism according to claim 1, wherein the outer wall of the base is provided with a second guide member, the core-adjusting ring is provided with a second guide groove in sliding fit with the second guide member, and the second guide groove is arranged along a second direction.
3. The core-adjusting and focusing mechanism according to claim 1, wherein the fine-adjusting gear is provided on the base.
4. The core-tuning focusing mechanism of claim 3, wherein the fine tuning module further comprises a fixed block, the fixed block is disposed on the base, and the fine tuning gear is rotatably disposed on the fixed block.
5. The core tuning and focusing mechanism of claim 1, wherein the fine tuning module further comprises a fine tuning plate, the fine tuning gear teeth being disposed on the fine tuning plate, the fine tuning plate being disposed on the core tuning ring.
6. The core-aligning and focusing mechanism of claim 5 wherein the fine-aligning gear teeth, the fine-aligning plate and the core-aligning ring are integrally formed.
7. The aligning and focusing mechanism of any one of claims 1 to 6 wherein the fine adjustment module further comprises an adjustment gear, the adjustment gear having a number of teeth greater than the number of teeth of the fine adjustment gear, the adjustment gear being meshed with the fine adjustment gear and the fine adjustment gear teeth, respectively.
8. The aligning and focusing mechanism of any one of claims 1 to 6 wherein the fine adjustment module further comprises a handle, the fine adjustment gear being connected to the handle.
9. The core-adjusting and focusing mechanism according to any one of claims 1 to 6, wherein the lens barrel is screwed with the lens barrel.
10. An image forming apparatus, characterized in that: comprising a core-adjusting and focusing mechanism according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322547099.4U CN220872748U (en) | 2023-09-19 | 2023-09-19 | Core-adjusting focusing mechanism and imaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322547099.4U CN220872748U (en) | 2023-09-19 | 2023-09-19 | Core-adjusting focusing mechanism and imaging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220872748U true CN220872748U (en) | 2024-04-30 |
Family
ID=90821682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322547099.4U Active CN220872748U (en) | 2023-09-19 | 2023-09-19 | Core-adjusting focusing mechanism and imaging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220872748U (en) |
-
2023
- 2023-09-19 CN CN202322547099.4U patent/CN220872748U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0682613U (en) | Lens barrel | |
| KR100509372B1 (en) | Zoom camera having a lens barrel assembly able to adjust focus and resolving power | |
| WO2021043226A1 (en) | Projection device and lens | |
| JP2009086567A (en) | Lens barrel | |
| CN101354468A (en) | Zooming apparatus | |
| CN109451242A (en) | A kind of High Precision Automatic focus control | |
| US8077409B2 (en) | Lens driving device and image forming apparatus | |
| KR100378482B1 (en) | barrle assembly of zoom camera | |
| JP2007093999A (en) | Lens barrel | |
| CN220872748U (en) | Core-adjusting focusing mechanism and imaging device | |
| CN104076478B (en) | Space Object Detection lens focusing system | |
| JP2006220795A (en) | Zoom lens device | |
| EP1229372A2 (en) | Zoom lens assembly with focus adjustment mechanism | |
| US6516148B1 (en) | Barrel assembly of zoom camera | |
| CN204065532U (en) | Space Object Detection lens focusing system | |
| US7684123B2 (en) | Lens structure | |
| CN111830663B (en) | Light small-size high accuracy curved surface cam focusing mechanism | |
| CN209962064U (en) | Automatic focusing device and automatic focusing lens comprising same | |
| JPH03113407A (en) | Lens barrel | |
| CN220271643U (en) | Automatic focusing lens for projector | |
| CN219392358U (en) | Photoelectric limiting zoom projection lens | |
| US5801888A (en) | High magnification zoom lens barrel including a drive ring having a short length to provide a compact camera | |
| CN218601571U (en) | Micro-macro lens with VCM automatic or manual focusing function | |
| CN213069471U (en) | Imaging device and photoetching machine | |
| CN110392194B (en) | Video camera |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |