CN112346195A - Lens device capable of realizing electromagnetic shielding and electromagnetic isolation - Google Patents
Lens device capable of realizing electromagnetic shielding and electromagnetic isolation Download PDFInfo
- Publication number
- CN112346195A CN112346195A CN202011397090.4A CN202011397090A CN112346195A CN 112346195 A CN112346195 A CN 112346195A CN 202011397090 A CN202011397090 A CN 202011397090A CN 112346195 A CN112346195 A CN 112346195A
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- CN
- China
- Prior art keywords
- lens
- electromagnetic
- electromagnetic shielding
- assembly
- isolation
- 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.)
- Pending
Links
- 238000002955 isolation Methods 0.000 title claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 31
- 230000003287 optical effect Effects 0.000 claims abstract description 15
- 239000005304 optical glass Substances 0.000 claims abstract description 9
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 238000012634 optical imaging Methods 0.000 abstract description 6
- 238000007493 shaping process Methods 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005670 electromagnetic radiation Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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
-
- 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
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
Abstract
The invention discloses a lens device capable of realizing electromagnetic shielding and electromagnetic isolation, which relates to the technical field of electromagnetic shielding and comprises three parts: a lens assembly 1 at the front end of the lens; the lens component 2 adopts a material with electromagnetic shielding and electromagnetic isolation functions as a lens cone; a lens assembly 3 of a lens projecting section. The inside of the parts 1, 2 and 3 in the figure is an optical imaging lens, and the material of the lens is optical glass or optical plastic. The lens component 1 is responsible for connecting the lens component 2 and shaping incident light beams to meet the incident requirements of the lens component 2; the lens assembly 3 functions to magnify the display image to meet the display requirements when the projected image from the lens assembly 2 fails to meet the requirements. The parts 1 and 3 in the figure can be omitted according to actual needs. The lens assembly 2 of the lens barrel is additionally provided with the material with the functions of electromagnetic shielding and electromagnetic isolation, so that the space at the two ends of the lens device can be effectively subjected to electromagnetic shielding and electromagnetic isolation. The problem of current camera lens do not have electromagnetic shield and electromagnetism isolation function is solved.
Description
Technical Field
The invention belongs to an electromagnetic shielding and electromagnetic isolating device, and particularly relates to an electromagnetic shielding and electromagnetic isolating device for imaging lenses or illuminating lenses, projection lenses, monitoring lenses and other occasions needing electromagnetic shielding or electromagnetic isolation in spaces at two ends of the lenses.
Background
With the rapid development of electromagnetic technology, electromagnetic application is increasingly wide, the use frequency band of electromagnetic waves is continuously widened, and in military, political offices, companies or other conference rooms or other occasions needing confidentiality, the display equipment needs to be integrally shielded, and the electromagnetic interference protection and electromagnetic shielding capability of the display equipment are also high. To ensure the shielding effectiveness, the shielding effectiveness of the display device in the security place cannot be lower than that of the security place. Traditional display device, liquid crystal display device can't realize electromagnetic shield, and projection equipment though can carry out electromagnetic shield and electromagnetic isolation processing at the fuselage, nevertheless because current camera lens does not have electromagnetic shield and electromagnetic isolation function, electromagnetic interference can propagate through the camera lens, often also can not reach the efficiency index of electromagnetic shield and electromagnetic isolation, must carry out whole electromagnetic shield to whole secret place, makes the cost very high like this.
Disclosure of Invention
The existing projection and monitoring lens is usually composed of a series of optical glass or optical plastic lenses, and a lens barrel of the existing projection and monitoring lens is usually machined or injection molded by adopting aluminum alloy or other metal and plastic materials, so that the lens has no shielding and isolating effect on electromagnetism, electromagnetic interference can be transmitted through the lens, and the whole display equipment cannot achieve the performance indexes of electromagnetic shielding and electromagnetic isolation. In view of the defects of the prior art, the invention provides a lens device capable of realizing electromagnetic shielding and electromagnetic isolation, so as to solve the problems of electromagnetic radiation and electromagnetic interference caused by a lens.
The structure of the lens device capable of realizing electromagnetic shielding and electromagnetic isolation disclosed by the invention is shown in figure 1. The lens device of the present invention includes three parts: a lens assembly 1 at the front end of the lens; a lens component 2 of the lens cone is made of materials with electromagnetic shielding and electromagnetic isolation functions; a lens assembly 3 of a lens projecting section. In the figure, the parts 1, 2 and 3 are internally provided with optical imaging lenses, and the materials of the lenses are optical glass or optical plastic. The lens component 2 is characterized by comprising a lens component 2 which adopts materials with electromagnetic shielding and electromagnetic isolation functions as a lens barrel, and at least more than one optical glass lens or optical plastic lens is arranged in the lens component 2. The parts 1 and 3 in the figure can be as required or not.
The technical scheme of the invention is as follows:
1. the lens assembly 1 and the lens assembly 3 in fig. 1 may be conventional lens assemblies, and the lens barrel and the lens are the same as those of a common lens assembly commonly used.
2. The lens assembly 2 in fig. 1 is a lens assembly 2 having electromagnetic shielding and isolation functions. The structure is as follows:
(1) the inside of the lens is an optical imaging lens, and the material of the lens can be optical glass or optical plastic.
(2) The lens barrel is made of materials with electromagnetic shielding and electromagnetic isolation functions, such as a waveguide tube, and is internally provided with lenses required by an optical path, so that electromagnetic waves are prevented from leaking and electromagnetic radiation is shielded.
(3) A plastic spacer ring is arranged between the lenses in the lens barrel to ensure the assembly position between the lenses.
The size of the lens barrel is determined according to the specification of a shielding material (such as a waveguide), and the length is generally less than 28mm, and the diameter is less than 10 mm.
Drawings
FIG. 1 is a schematic view of the structure of the apparatus of the present invention
In the figure, 1 is a lens assembly 1, 2 is a lens assembly 2, and 3 is a lens assembly 3.
Fig. 2 is a schematic structural diagram of the lens assembly 2 (first embodiment)
FIG. 3 is a schematic diagram of a second embodiment of the present invention
FIG. 4 is a schematic diagram of a third structure of an embodiment of the present invention
FIG. 5 is a schematic diagram of a fourth embodiment of the present invention
In fig. 2 to 5, 11 is the lens 1 of the lens module 1, 12 is the lens spacer 1 of the lens module 1, 13 is the lens n of the lens module 1, 14 is the lens spacer n of the lens module 1, 15 is the lens barrel of the lens module 1, 21 is the lens 1 of the lens module 2, 22 is the lens spacer 1 of the lens module 2, 23 is the lens n of the lens module 2, 24 is the lens spacer n of the lens module 2, 25 is the lens barrel of the lens module 2, 31 is the lens 1 of the lens module 3, 32 is the lens spacer 1 of the lens module 3, 33 is the lens n of the lens module 3, 34 is the lens spacer n of the lens module 3, and 35 is the lens barrel of the lens module 3.
Detailed Description
The technical solutions in the embodiments of the apparatus according to the present invention will be described clearly and completely below with reference to the embodiments of the apparatus according to the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the apparatus according to the present invention, but not all of them. On the basis of the embodiment of the device of the invention, any equivalent replacement or modified equivalent embodiment made by those skilled in the art without departing from the technical scope of the device of the invention belongs to the protection scope of the device right of the invention.
Example one
Referring to fig. 2, a lens apparatus capable of achieving electromagnetic shielding and electromagnetic isolation. The lens cone of the lens device is made of electromagnetic shielding and electromagnetic isolation materials, such as waveguide tubes, optical imaging lenses are assembled inside the lens cone, the optical imaging lenses are made of optical glass or optical plastic, and plastic space rings are used between the optical imaging lenses to ensure the assembly positions of the lenses. The lens which adopts electromagnetic shielding and electromagnetic isolation materials as the lens cone shields the electromagnetic radiation of the lens parts of the projection system and the monitoring system so as to meet the requirement of confidentiality.
Example two
Referring to fig. 3, a lens apparatus capable of achieving electromagnetic shielding and electromagnetic isolation. In an actual projection and monitoring system, a light beam signal at a lens incidence end cannot meet the incidence requirement of the lens assembly 2 or the structure of the signal incidence end is not easy to realize direct connection with a waveguide tube of the lens assembly 2, the lens assembly 1 can be arranged at the front end of the lens, and the lens assembly 1 and the inside of the lens assembly 1 can be provided with or without lenses. The lens barrel of the lens assembly 1 may be a conventional material (plastic or metal), and an optical lens may be disposed inside the lens barrel, and the lens material may be optical glass or optical plastic. Through the lens assembly 1, the lens in the lens assembly and the lens assembly 2 adopting the electromagnetic shielding material and the electromagnetic shielding material as the lens cone, the lens device can meet the requirement of confidentiality and can achieve better display effect.
EXAMPLE III
Referring to fig. 4, a lens apparatus capable of achieving electromagnetic shielding and electromagnetic isolation. In an actual projection and monitoring system, when an image projected by a lens using an electromagnetic shielding and electromagnetic isolation material as a lens barrel is too small to meet display requirements, the lens assembly 3 may be disposed at the rear end of the lens assembly 2, the lens barrel of the lens assembly 3 may be made of a conventional material (plastic or metal), an optical lens may be disposed inside the lens barrel, and the lens material may be optical glass or optical plastic. The display image is further enlarged through the lens assembly 3. The lens device can meet the requirement of confidentiality and achieve a better display effect.
Example four
Referring to fig. 5, a lens apparatus capable of achieving electromagnetic shielding and electromagnetic isolation. In an actual projection and monitoring system, sometimes, not only the electromagnetic shielding and electromagnetic isolation material at the incident end of the lens cannot meet the design requirements or cannot be implemented as the lens of the lens barrel, but also the image projected by the lens adopting the electromagnetic shielding and electromagnetic isolation material as the lens barrel is too small to meet the display requirements. Under the condition, the lens component 1 and the lens component 1 can be arranged at the front end of the lens, and the lens component 1, the lens component 2 adopting electromagnetic shielding and electromagnetic shielding materials as the lens barrel and the lens component 3 can ensure that the lens device can meet the display requirement and can also reach the confidential indexes of electromagnetic shielding and electromagnetic isolation.
In summary, at the incident end of the lens, because the light beam does not directly enter the lens assembly 2 adopting the electromagnetic shielding and the electromagnetic isolation as the lens barrel or the light beam cannot be directly connected with the lens assembly 2 due to the structure, the design of the lens assembly 1 at the front end of the lens ensures that the light beam enters the lens assembly 2 adopting the electromagnetic shielding and the electromagnetic isolation as the lens barrel and is connected with the structure, the display requirement cannot be met after passing through the lens assembly 2, the lens assembly 3 is arranged at the rear end of the lens assembly 2, and the displayed image is amplified by combining the lenses passing through the inside of the lens assembly 3.
The four embodiments of the invention have shown that, the lens device capable of realizing electromagnetic shielding and electromagnetic isolation provided by the invention has the advantages that the lens component 2 adopting the electromagnetic shielding and electromagnetic isolation material as the lens cone is added in the lens, so that the electromagnetic shielding and electromagnetic isolation are carried out on the signals passing through the lens device. Compared with the existing lens, the electromagnetic shielding and electromagnetic isolation of the projection product and the monitoring product on the lens part is effectively processed, and the problem that the existing lens cannot meet the requirements of electromagnetic shielding and electromagnetic isolation is solved. In addition, the device adopts electromagnetic shielding and electromagnetic isolation materials as the lens component 2 of the lens cone, the lens component 1 is designed at the front end and the lens component 3 is designed at the rear end according to the requirements of actual products, the materials of the lens component 1 and the lens component 3 can be conventional lens materials, the design and the production are simple and flexible, and the electromagnetic shielding and electromagnetic isolation cost is effectively saved.
Claims (7)
1. A lens device capable of realizing electromagnetic shielding and electromagnetic isolation is characterized by comprising a lens barrel 25, wherein the lens barrel is made of materials with electromagnetic shielding and electromagnetic isolation functions, the lens barrel at least comprises an optical glass lens or a plastic lens 21, and when a plurality of lenses are arranged in the lens barrel, a plastic spacer 22 is used between the lenses in the lens barrel to ensure the assembly positions of the lenses.
2. Preferably, the lens device capable of achieving electromagnetic shielding and electromagnetic isolation according to claim 1,
the lens component 1 is arranged at the front end of the lens component 2, and a lens barrel of the lens component 1 can be made of conventional materials (plastic or metal), and an optical lens can be assembled in the lens barrel or not.
3. Preferably, a lens device capable of achieving electromagnetic shielding and electromagnetic isolation according to claim 1, wherein the lens assembly 3 is disposed at the rear end of the lens assembly 2, and the lens barrel of the lens assembly 3 may be made of a conventional material (plastic or metal), and an optical lens may be assembled inside the lens barrel.
4. Further preferably, a lens device capable of achieving electromagnetic shielding and electromagnetic isolation according to claim 2 and claim 3, wherein the lens assembly 1 is disposed at a front end of the lens assembly 2, the lens barrel of the lens assembly 1 may be made of a conventional material (plastic or metal), and may or may not be provided with an optical lens inside, the lens assembly 3 is disposed at a rear end of the lens assembly 2, and the lens barrel of the lens assembly 3 may be made of a conventional material (plastic or metal), and may or may not be provided with an optical lens inside.
5. Preferably, the lens device capable of achieving electromagnetic shielding and electromagnetic isolation according to claim 1, wherein a waveguide tube having electromagnetic shielding and electromagnetic isolation functions is used as the lens barrel of the lens assembly 2.
6. Further preferably, the lens device capable of achieving electromagnetic shielding and electromagnetic isolation according to claim 5, wherein a waveguide tube with a diameter smaller than 10mm is used as the lens barrel of the lens assembly 2.
7. Still further preferably, the lens device capable of achieving electromagnetic shielding and electromagnetic isolation according to claim 6, wherein the length of the lens barrel (waveguide) of the lens assembly 2 is less than 28 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011397090.4A CN112346195A (en) | 2020-12-04 | 2020-12-04 | Lens device capable of realizing electromagnetic shielding and electromagnetic isolation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011397090.4A CN112346195A (en) | 2020-12-04 | 2020-12-04 | Lens device capable of realizing electromagnetic shielding and electromagnetic isolation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112346195A true CN112346195A (en) | 2021-02-09 |
Family
ID=74427643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011397090.4A Pending CN112346195A (en) | 2020-12-04 | 2020-12-04 | Lens device capable of realizing electromagnetic shielding and electromagnetic isolation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112346195A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060051031A1 (en) * | 2004-09-09 | 2006-03-09 | Walker Harold Y Jr | Optical barrels with electromagnetic shielding |
| CN101276033A (en) * | 2007-03-30 | 2008-10-01 | 鸿富锦精密工业（深圳）有限公司 | Lens module set |
| TW200841066A (en) * | 2007-04-10 | 2008-10-16 | Hon Hai Prec Ind Co Ltd | Lens module |
| CN101354466A (en) * | 2007-07-27 | 2009-01-28 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
| TW200907451A (en) * | 2007-08-03 | 2009-02-16 | Hon Hai Prec Ind Co Ltd | Lens module |
| US20120113317A1 (en) * | 2010-11-05 | 2012-05-10 | David Anderson | Electromagnetically Shielded Video Camera and Shielded Enclosure for Image Capture Devices |
| CN210143227U (en) * | 2019-06-06 | 2020-03-13 | 青岛科技大学 | Camera electromagnetic shielding device |
-
2020
- 2020-12-04 CN CN202011397090.4A patent/CN112346195A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060051031A1 (en) * | 2004-09-09 | 2006-03-09 | Walker Harold Y Jr | Optical barrels with electromagnetic shielding |
| CN101276033A (en) * | 2007-03-30 | 2008-10-01 | 鸿富锦精密工业（深圳）有限公司 | Lens module set |
| US20080239519A1 (en) * | 2007-03-30 | 2008-10-02 | Hon Hai Precision Industry Co., Ltd. | Lens module |
| TW200841066A (en) * | 2007-04-10 | 2008-10-16 | Hon Hai Prec Ind Co Ltd | Lens module |
| CN101354466A (en) * | 2007-07-27 | 2009-01-28 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
| TW200907451A (en) * | 2007-08-03 | 2009-02-16 | Hon Hai Prec Ind Co Ltd | Lens module |
| US20120113317A1 (en) * | 2010-11-05 | 2012-05-10 | David Anderson | Electromagnetically Shielded Video Camera and Shielded Enclosure for Image Capture Devices |
| CN210143227U (en) * | 2019-06-06 | 2020-03-13 | 青岛科技大学 | Camera electromagnetic shielding device |
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