CN110568577A - Lens focusing structure - Google Patents
Lens focusing structure Download PDFInfo
- Publication number
- CN110568577A CN110568577A CN201910950879.9A CN201910950879A CN110568577A CN 110568577 A CN110568577 A CN 110568577A CN 201910950879 A CN201910950879 A CN 201910950879A CN 110568577 A CN110568577 A CN 110568577A
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- barrel
- lens
- focusing
- guide groove
- connecting seat
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- 238000013461 design Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing 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
- 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
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The invention relates to a lens focusing structure, comprising: the device comprises a first lens barrel (1), a second lens barrel (2), a focusing barrel (3) and a connecting seat (4); the first lens cone (1) and the second lens cone (2) are mutually sleeved and slidably connected, the second lens cone (2) and the connecting seat (4) are mutually sleeved and slidably connected, and the focusing barrel (3) is respectively rotatably connected with the first lens cone (1), the second lens cone (2) and the connecting seat (4); and when the focusing barrel (3) is rotated, the first lens barrel (1) and the connecting seat (4) can respectively linearly reciprocate relative to the second lens barrel (2) along the axial direction. According to the invention, the focusing ring can realize a larger focusing stroke only by rotating a small angle, and the limitation that the existing lens only can adjust a small lens group stroke by a large focusing angle is broken through.
Description
Technical Field
The invention relates to the field of optics, in particular to a lens focusing structure.
Background
With the development of science and technology and the arrival of the information era, security monitoring lenses play an unbelievable and non-trivial role in the work and life of people, and the maintenance of social stability and the safety of lives and properties of people depend on the increasing growth of the security field. The zoom lens in the security lens can focus the picture clearly according to different environments, and is very convenient for users. Then need design out corresponding focusing structure to the focusing demand camera lens structural design of difference and satisfy user's demand, but often receive the restriction of camera lens appearance and the influence that the part processing is limited, lead to general focusing structure if: the three-piece thread sleeve, the single guide groove and the like cannot meet the design requirements of small focusing angle and large focusing stroke, and certain difficulty is brought to the structural design of the lens.
Disclosure of Invention
the invention aims to provide a lens focusing structure which can realize large-stroke focusing with a small focusing angle.
To achieve the above object, the present invention provides a lens focusing structure, including: the focusing device comprises a first lens barrel, a second lens barrel, a focusing barrel and a connecting seat;
The first lens cone and the second lens cone are mutually sleeved and connected in a sliding manner, the second lens cone and the connecting seat are mutually sleeved and connected in a sliding manner, and the focusing barrel is respectively and rotatably connected with the first lens cone, the second lens cone and the connecting seat;
and when the focusing barrel is rotated, the first lens barrel and the connecting seat can respectively linearly reciprocate relative to the second lens barrel along the axial direction.
According to one aspect of the invention, a first guide groove, a second guide groove and a third guide groove which penetrate through the wall of the focusing barrel are sequentially arranged on the focusing barrel along the axial direction of the focusing barrel;
The first guide groove, the second guide groove and the third guide groove respectively extend along the circumferential direction of the focusing barrel.
According to one aspect of the invention, the second lens barrel is positioned in the focusing barrel, and a first connecting piece is arranged on the second lens barrel and is in sliding fit connection with the second guide groove;
The wall of the second lens barrel, which is close to the object side, is provided with a first linear guide groove which extends along the axial direction of the second lens barrel.
According to one aspect of the invention, at least part of the cylinder body of the first lens barrel is positioned in the second lens barrel, and a second connecting piece is arranged on the cylinder body of the first lens barrel;
The second connecting piece is respectively connected with the first linear guide groove and the first guide groove in a sliding fit mode.
According to one aspect of the invention, the inner wall of the connecting seat is provided with a second linear guide groove extending along the axial direction of the connecting seat;
One end of the second lens cone, which is close to the image side, is positioned in the connecting seat, and a third connecting piece which is connected with the second linear guide groove in a sliding fit manner is arranged on the cylinder body of the second lens cone;
one end, close to the object side, of the connecting seat is located in the focusing barrel, and a fourth connecting piece is arranged on the connecting seat and is in sliding connection with the third guide groove.
According to an aspect of the invention, further comprising: a focusing ring;
the focusing ring is sleeved outside the focusing barrel and fixedly connected with the focusing barrel.
according to an aspect of the invention, further comprising: a locking member for locking rotational positions of the focus ring and the focus barrel;
the locking piece is in threaded connection with the focusing barrel.
according to one aspect of the invention, one end of the focusing barrel close to the image side is provided with a notch;
And along the axial direction of the focusing barrel, the notch and the mounting position on the focusing barrel, where the locking piece is mounted, are positioned on the same bus.
According to one scheme of the invention, one focusing ring can simultaneously control the zoom group and the focusing group of the lens through the multi-guide-slot focusing barrel, so that the lens can be simultaneously zoomed and focused, the limitation that only one group can be controlled by one focusing ring of the traditional monitoring lens is solved, and the lens adopting the invention has high zooming and focusing speeds.
According to one scheme of the invention, the connecting seat is connected with the imaging surface, the first lens cone and the second lens cone are driven to respectively move along the axial direction by rotating the focusing ring by a small angle anticlockwise or clockwise, wherein the first lens cone moves axially relative to the second lens cone, the second lens cone moves axially relative to the connecting seat, the movement amount generated in the focusing process is the sum of the movement amounts of the two lens cones along the axial direction, and then the focusing ring only needs to rotate by a small angle to realize a large focusing stroke, thereby breaking through the limitation that the existing lens only needs a large focusing angle and can adjust a small lens group stroke.
According to one scheme of the invention, each guide groove curve of the three guide groove structures on the focusing barrel can be different. Therefore, the invention breaks through the limitation that only one guide groove is arranged on the focusing cylinder, realizes the possibility of designing a plurality of guide grooves on one focusing cylinder, and further can realize the synchronous linkage of focusing and zooming of different lenses.
According to an aspect of the present invention, the focusing structure of the present invention is suitable for a zoom group of a fixed focus lens, and is also suitable for a zoom group and a zoom group of a zoom lens. Meanwhile, the invention can be used for a manual zoom lens, a gear is added on the focusing ring, a motor is added on the lens, and the invention can also be used for an electric lens, has wide use types, can be suitable for different types of lenses and meets various requirements of users.
Drawings
Fig. 1 schematically shows an exploded view of a lens focusing arrangement according to an embodiment of the present invention;
Fig. 2 schematically shows a cross-sectional view of a lens focusing structure according to an embodiment of the present invention;
fig. 3 schematically illustrates an assembly view of a lens focusing structure according to an embodiment of the present invention;
Fig. 4 schematically shows a focus ring mounting diagram of a lens focusing structure according to an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In describing embodiments of the present invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship that is based on the orientation or positional relationship shown in the associated drawings, which is for convenience and simplicity of description only, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, the above-described terms should not be construed as limiting the present invention.
The present invention is described in detail below with reference to the drawings and the specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.
referring to fig. 1, 2 and 3, according to an embodiment of the present invention, a lens focusing structure of the present invention includes: the lens barrel comprises a first lens barrel 1, a second lens barrel 2, a focusing barrel 3 and a connecting seat 4. In the present embodiment, the first barrel 1 and the second barrel 2 are used to mount lens groups, respectively. The focus cylinder 3 is used for zooming and focusing of the lens employing the focusing structure of the present invention. In the present embodiment, the first lens barrel 1 and the second lens barrel 2 are slidably connected to each other, the second lens barrel 2 and the connecting seat 4 are slidably connected to each other, and the focusing barrel 3 is rotatably connected to the first lens barrel 1, the second lens barrel 2 and the connecting seat 4, respectively. In the present embodiment, by rotating the focus barrel 3, the first barrel 1 and the connecting base 4 can respectively move linearly and reciprocally in the axial direction with respect to the second barrel 2 under the action of the focus barrel 3, thereby realizing focusing and zooming of the lens barrel according to the present invention.
Referring to fig. 1, 2 and 3, according to an embodiment of the present invention, the focus cylinder 3 is provided with a first guide groove 31, a second guide groove 32 and a third guide groove 33 which penetrate a cylinder wall thereof in order along an axial direction of the focus cylinder 3. In the present embodiment, the first guide groove 31 and the third guide groove 33 are located on both sides of the second guide groove 32, respectively, the first guide groove 31 is adjacent to the object-side end of the focus cylinder 3, and the third guide groove 33 is adjacent to the image-side end of the focus cylinder 3. In the present embodiment, the first guide groove 31, the second guide groove 32, and the third guide groove 33 each extend in the circumferential direction of the focus cylinder 3 to form a curved groove. The first guide groove 31, the second guide groove 32 and the third guide groove 33 are designed to have different strokes.
Referring to fig. 1, 2 and 3, according to an embodiment of the present invention, the second barrel 2 is located in the focusing barrel 3, and the second barrel 2 is provided with a first connecting member 21 connected with the second guiding groove 32 in a sliding fit manner. In the present embodiment, the second barrel 2 and the focus barrel 3 are coaxially arranged in the focus barrel 3, a first mounting position 21a for the first connector 21 is provided on the second barrel 2, and the first connector 21 and the first mounting position 21a can be screwed together. In this embodiment, the focusing barrel 3 is sleeved outside the second barrel 2, and the second guide groove 32 and the first mounting position 21a are aligned with each other, one end of the first connecting member 21 passes through the second guide groove 32 to be screwed with the first mounting position 21a, and the other end of the first connecting member 21 is just matched with the second guide groove 32. When the focus cylinder 3 is rotated, the first link 21 slides along the second guide groove 32.
in the present embodiment, the cylindrical wall of the second barrel 2 near the object side is provided with a first linear guide groove 22 extending in the axial direction thereof. In the present embodiment, the first linear guide groove 22 penetrates the cylindrical wall of the second barrel 2 and is used for connecting with the first barrel 1.
referring to fig. 1, 2 and 3, according to an embodiment of the present invention, at least a part of the barrel of the first barrel 1 is located in the second barrel 2, and the barrel of the first barrel 1 is provided with a second connecting member 11. In this embodiment, the end of the first barrel 1 close to the image side and the end of the second barrel 2 close to the object side are sleeved with each other. A second mounting position 11a for connecting with the second connecting piece 11 is arranged on the cylinder wall of one end of the first lens cone 1 extending into the second lens cone 2. In this embodiment, the second connecting member 11 and the second mounting position 11a may be screwed together.
in the present embodiment, after the first barrel 1 is mounted in the second barrel 2, the second barrel 1 and the focus cylinder 3 are rotated so that the second mounting position 11a, the first linear guide groove 22, and the first guide groove 31 are aligned with each other. One end of the second connecting piece 11 passes through the first guide slot 31, the first linear guide slot 22 and the second installation in turn respectively to be in threaded connection with each other 11a, and the other end thereof is just in sliding connection with the first guide slot 31 and the first linear guide slot 22. When the focusing barrel 3 is rotated, the second connecting member 11 slides along the second guide groove 22 and the first linear guide groove 22, so that the first barrel 1 linearly reciprocates relative to the second barrel 2, and the focusing barrel 3 rotates relative to the first barrel 1 and the second barrel 2.
Referring to fig. 1, 2 and 3, according to an embodiment of the present invention, the inner wall of the connecting socket 4 is provided with a second linear guide groove 41 extending along the axial direction thereof. In this embodiment, one end of the second barrel 2 close to the image side is located in the connecting seat 4, that is, the second barrel 2 and the connecting seat 4 are coaxially arranged. A third mounting position 23a for mounting the third connector 23 is provided on the barrel body at the end of the second barrel 2 close to the image side. The third connector 23 may be threadedly coupled to the third mounting location 23 a. In this embodiment, the third connecting member 23 is first installed on the second barrel 2, then the connecting seat 4 is rotated to align the second linear guiding groove 41 with the third connecting member 23, and then the connecting seat 4 is moved along the axial direction of the second barrel 2 to sleeve the connecting seat 4 on the second barrel 2, at this time, the third connecting member 23 is just connected with the second linear guiding groove 41 in a sliding fit manner.
In the present embodiment, one end of the connecting base 4 close to the object side is located in the focus tube 3. In the present embodiment, a fourth mounting position 42a for connecting the fourth connector 42 is provided on the cylindrical wall of the connecting socket 4 at the end close to the object side. In the present embodiment, the fourth connection member 42 and the fourth mounting position 42a may be screwed. The third guide groove 33 and the fourth mounting position 42a are aligned with each other by rotating the focus adjustment barrel 3, one end of the fourth connecting member 42 is threaded to the fourth mounting position 42a through the third guide groove 33, and the other end of the fourth connecting member 42 is just fit to the third guide groove 33. When the focus cylinder 3 is rotated, the fourth link 42 slides along the third guide groove 33, and the third link 23 slides with respect to the second linear guide groove 41.
referring to fig. 1, 2, 3 and 4, according to an embodiment of the present invention, the method further includes: and a focus ring 5. In the present embodiment, the focus ring 5 is fitted around the outside of the focus cylinder 3. The focusing barrel 3 is provided with a fifth mounting position 35, the focusing ring 5 is provided with a first connecting through hole, and a fifth connecting piece penetrates through the first connecting through hole to be in threaded connection with the fifth mounting position 35, so that the focusing ring 5 can be fixed on the focusing barrel 3, and the common rotation of the focusing ring 5 and the focusing barrel 3 is realized.
as shown in fig. 1, fig. 2 and fig. 4, according to an embodiment of the present invention, the method further includes: and a locking member 6 for locking the rotational positions of the focus ring 5 and the focus cylinder 3. In the present embodiment, a sixth mounting position is provided on the focus adjustment cylinder 3, a second connection through hole is provided on the focus adjustment ring 5, and the locking member 6 is screwed to the sixth mounting position through the second connection through hole. The positions of the focusing ring 5, the focusing barrel 3 and the second lens barrel 2 can be locked by rotating the locking piece 6, and the focusing ring 5 and the focusing barrel 3 are locked to prevent rotation. Referring to fig. 1, in the present embodiment, in order to distinguish the sixth mounting position on the focus adjustment barrel 3, a notch is formed at an end portion of the focus adjustment barrel 3, which is opposite to the sixth mounting position, that is, the notch and the sixth mounting position are located on the same bus line (see an end of the focus adjustment barrel 3 close to the image side in fig. 1) along the axial direction of the focus adjustment barrel 3, and this notch is used for identifying the position of the mounting locking piece 6, thereby avoiding locking errors, and further, being used for identifying the direction and the angle.
according to the invention, one focusing ring can simultaneously control the zoom group and the focusing group of the lens through the multi-guide-slot focusing barrel, so that the lens can be simultaneously zoomed and focused, the limitation that only one group can be controlled by one focusing ring of the traditional monitoring lens is solved, and the lens adopting the invention has high zooming and focusing speeds.
According to the invention, the connecting seat is connected with the imaging surface, and the first lens cone and the second lens cone are driven to respectively move along the axial direction by rotating the focusing ring by a small angle anticlockwise or clockwise, wherein the first lens cone moves axially relative to the second lens cone, the second lens cone moves axially relative to the connecting seat, and further the movement amount generated in the focusing process is the sum of the movement amounts of the two lens cones along the axial direction, so that the focusing ring can realize a large focusing stroke only by rotating by a small angle, and the limitation that the existing lens only can adjust a small lens group stroke by a large focusing angle is broken through. In the invention, the relative displacement of 10mm between groups can be realized only by rotating the focusing ring by about 80 degrees, but the common single guide groove or thread three-piece focusing structure can not achieve the effect, so that the focusing and zooming efficiency can be greatly improved, and the focusing group and the zooming group can be simultaneously controlled, and the focusing structure can bring great convenience and progress for the subsequent lens focusing structure.
according to the invention, the curves of the three guide grooves on the focusing barrel can be different. Therefore, the invention breaks through the limitation that only one guide groove is arranged on the focusing cylinder, realizes the possibility of designing a plurality of guide grooves on one focusing cylinder, and further can realize the synchronous linkage of focusing and zooming of different lenses.
According to the present invention, the focusing structure of the present invention is applicable to a zoom group of a fixed focus lens, and is also applicable to a zoom group and a zoom group of a zoom lens. Meanwhile, the invention can be used for a manual zoom lens, a gear is added on the focusing ring, a motor is added on the lens, and the invention can also be used for an electric lens, has wide use types, can be suitable for different types of lenses and meets various requirements of users.
The foregoing is merely exemplary of particular aspects of the present invention and devices and structures not specifically described herein are understood to be those of ordinary skill in the art and are intended to be implemented in such conventional ways.
The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A lens focusing structure, comprising: the device comprises a first lens barrel (1), a second lens barrel (2), a focusing barrel (3) and a connecting seat (4);
the first lens cone (1) and the second lens cone (2) are mutually sleeved and slidably connected, the second lens cone (2) and the connecting seat (4) are mutually sleeved and slidably connected, and the focusing barrel (3) is respectively rotatably connected with the first lens cone (1), the second lens cone (2) and the connecting seat (4);
And when the focusing barrel (3) is rotated, the first lens barrel (1) and the connecting seat (4) can respectively linearly reciprocate relative to the second lens barrel (2) along the axial direction.
2. the lens focusing structure according to claim 1, wherein the focusing barrel (3) is provided with a first guide groove (31), a second guide groove (32) and a third guide groove (33) which penetrate through the barrel wall thereof in sequence along the axial direction of the focusing barrel (3);
the first guide groove (31), the second guide groove (32) and the third guide groove (33) extend in the circumferential direction of the focusing barrel (3).
3. The lens focusing structure according to claim 2, wherein the second lens barrel (2) is located in the focusing barrel (3), and a first connecting piece (21) is arranged on the second lens barrel (2) and is in sliding fit connection with the second guide groove (32);
A first linear guide groove (22) extending along the axial direction of the second lens barrel (2) is arranged on the barrel wall of the second lens barrel (2) close to the object side.
4. A lens focusing structure according to claim 3, characterized in that at least a part of the cylinder of the first lens barrel (1) is located in the second lens barrel (2), and a second connecting piece (11) is arranged on the cylinder of the first lens barrel (1);
The second connecting piece (11) is connected with the first linear guide groove (22) and the first guide groove (31) in a sliding fit mode in sequence.
5. a lens focusing structure according to claim 4, characterized in that the inner wall of the connecting base (4) is provided with a second linear guide groove (41) extending along the axial direction thereof;
One end, close to the image side, of the second lens cone (2) is positioned in the connecting seat (4), and a third connecting piece (23) connected with the second linear guide groove in a sliding fit manner is arranged on a cylinder body of the second lens cone;
One end, close to the object side, of the connecting seat (4) is located in the focusing barrel (3), and a fourth connecting piece (42) is arranged on the connecting seat (4) and is in sliding connection with the third guide groove (33).
6. The lens focusing structure of claim 5, further comprising: a focus ring (5);
The focusing ring (5) is sleeved on the outer side of the focusing barrel (3) and is fixedly connected with the focusing barrel (3).
7. The lens focusing structure of claim 6, further comprising: a locking member (6) for locking the rotational positions of the focus ring (5) and the focus barrel (3);
The locking piece (6) is in threaded connection with the focusing barrel (3).
8. the lens focusing structure according to claim 7, wherein a notch (7) is provided at an end of the barrel (3) close to the image side;
Along the axial direction of the focusing barrel (3), the notch (7) and the mounting position of the locking piece (6) on the focusing barrel (3) are positioned on the same bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910950879.9A CN110568577A (en) | 2019-10-08 | 2019-10-08 | Lens focusing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910950879.9A CN110568577A (en) | 2019-10-08 | 2019-10-08 | Lens focusing structure |
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| Publication Number | Publication Date |
|---|---|
| CN110568577A true CN110568577A (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910950879.9A Withdrawn CN110568577A (en) | 2019-10-08 | 2019-10-08 | Lens focusing structure |
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| Country | Link |
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| CN (1) | CN110568577A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111650714A (en) * | 2020-06-16 | 2020-09-11 | 南昌欧菲光电技术有限公司 | Zoom structure and imaging device |
| CN113391456A (en) * | 2021-08-16 | 2021-09-14 | 山东省科学院海洋仪器仪表研究所 | Electronic angle mirror that expands of laser initiative formation of image illumination light source |
| CN113534394A (en) * | 2021-06-22 | 2021-10-22 | 杨志军 | Focusing structure of coaxial optical zoom lens |
| WO2021253227A1 (en) * | 2020-06-16 | 2021-12-23 | 欧菲光集团股份有限公司 | Zoom structure and camera device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109477947A (en) * | 2017-06-02 | 2019-03-15 | 株式会社尼康 | Lens barrel and photographic device |
| CN208705546U (en) * | 2018-09-14 | 2019-04-05 | 江苏艺佳精密仪器制造有限公司 | A kind of lens focusing mechanism |
| CN211014796U (en) * | 2019-10-08 | 2020-07-14 | 舜宇光学(中山)有限公司 | Lens focusing structure |
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2019
- 2019-10-08 CN CN201910950879.9A patent/CN110568577A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109477947A (en) * | 2017-06-02 | 2019-03-15 | 株式会社尼康 | Lens barrel and photographic device |
| CN208705546U (en) * | 2018-09-14 | 2019-04-05 | 江苏艺佳精密仪器制造有限公司 | A kind of lens focusing mechanism |
| CN211014796U (en) * | 2019-10-08 | 2020-07-14 | 舜宇光学(中山)有限公司 | Lens focusing structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111650714A (en) * | 2020-06-16 | 2020-09-11 | 南昌欧菲光电技术有限公司 | Zoom structure and imaging device |
| WO2021253227A1 (en) * | 2020-06-16 | 2021-12-23 | 欧菲光集团股份有限公司 | Zoom structure and camera device |
| CN113534394A (en) * | 2021-06-22 | 2021-10-22 | 杨志军 | Focusing structure of coaxial optical zoom lens |
| CN113391456A (en) * | 2021-08-16 | 2021-09-14 | 山东省科学院海洋仪器仪表研究所 | Electronic angle mirror that expands of laser initiative formation of image illumination light source |
| CN113391456B (en) * | 2021-08-16 | 2021-11-26 | 山东省科学院海洋仪器仪表研究所 | Electronic angle mirror that expands of laser initiative formation of image illumination light source |
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Application publication date: 20191213 |