CN211917948U - Laser eavesdropping blocking protective film - Google Patents
Laser eavesdropping blocking protective film Download PDFInfo
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- CN211917948U CN211917948U CN201922294519.6U CN201922294519U CN211917948U CN 211917948 U CN211917948 U CN 211917948U CN 201922294519 U CN201922294519 U CN 201922294519U CN 211917948 U CN211917948 U CN 211917948U
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Abstract
The utility model discloses a laser is eavesdropped and is blocked protective film, including the infrared absorption membrane, infrared absorption membrane two sides is equipped with inside protection film one and inside protection film two respectively, inside protection film one and the two outsides of inside protection film are equipped with outside protection film one and outside protection film two respectively, the infrared absorption membrane adopts nanometer alumina film, inside protection film one and inside protection film two adopt tetrafluoroethylene non-woven fabrics substrate film, outside protection film one and outside protection film two adopt the styrene-acrylic emulsion film. The utility model has the advantages that: can absorb the invasion infrared light and cut off the laser transmission, and does not influence the daily use.
Description
Technical Field
The utility model relates to a protecting film technical field specifically indicates a laser is eavesdropped and is blocked protecting film.
Background
With the development of laser technology, the laser eavesdropping technology is eavesdropping by forward and backward laser which needs to be aligned at the earliest time, and the laser can eavesdrop indoor conversation only by irradiating objects which can vibrate in a room, such as clothes, paper, a water cup, a curtain and the like, so that the privacy of individuals and the secret of businesses cannot be effectively protected.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is, to above-mentioned problem, provide one kind can absorb, cut off laser transmission, do not influence a laser eavesdrop of daily use and block the protecting film to the invasion infrared light.
In order to solve the technical problem, the utility model provides a technical scheme does: the utility model provides a laser is eavesdropped and is blocked protective film, includes the infrared absorption membrane, infrared absorption membrane two sides is equipped with inside protection film one and inside protection film two respectively, inside protection film one and the two outsides of inside protection film are equipped with outside protection film one and outside protection film two respectively, the infrared absorption membrane adopts nanometer alumina film, inside protection film one and inside protection film two adopt tetrafluoroethylene non-woven fabrics substrate film, outside protection film one and outside protection film two adopt the styrene-acrylic emulsion film.
Compared with the prior art, the utility model the advantage lie in: according to the laser eavesdropping blocking protective film, the infrared absorption film is a nano alumina film which absorbs the invaded infrared rays and has certain light transmittance, so that daily use is not influenced; the first internal protective film and the second internal protective film are made of tetrafluoroethylene non-woven base material films, and have light weight, good light transmission and air isolation, and can prevent the infrared absorption film from being oxidized; the first external protection film and the second external protection film are styrene-acrylic emulsion films which are transparent and waterproof, have good ageing resistance and can effectively protect the infrared absorption film, the first internal protection film and the second internal protection film.
As an improvement, the thicknesses of the first internal protection film and the second internal protection film are consistent, and the thicknesses of the first external protection film and the second external protection film are consistent.
As an improvement, the thickness of the infrared light absorption film is 2-4 silk meters.
As an improvement, the thickness of the first inner protective film is 3-5 microns.
As an improvement, the thickness of the first external protective film is 4-6 silk meters.
Drawings
Fig. 1 is a schematic structural view of the laser eavesdropping blocking protective film of the present invention.
Description of the drawings: 1. the infrared absorption film 2, the first inner protection film 3, the second inner protection film 4, the first outer protection film 5 and the second outer protection film.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
With the attached drawings, the laser eavesdropping blocking protective film comprises an infrared light absorption film 1, wherein two sides of the infrared light absorption film 1 are respectively provided with a first internal protective film 2 and a second internal protective film 3, the outer sides of the first internal protective film 2 and the second internal protective film 3 are respectively provided with a first external protective film 4 and a second external protective film 5, the infrared light absorption film 1 adopts a nano alumina film, the first internal protective film 2 and the second internal protective film 3 adopt a tetrafluoroethylene non-woven base material film, and the first external protective film 4 and the second external protective film 5 adopt a styrene-acrylic emulsion film.
The thickness of the first internal protective film 2 is consistent with that of the second internal protective film 3, and the thickness of the first external protective film 4 is consistent with that of the second external protective film 5, so that the front side and the back side of the laser eavesdropping blocking protective film cannot be distinguished, and the laser eavesdropping blocking protective film is convenient to use.
The thickness of the infrared light absorption film 1 is 2-4 silk meters, and the whole thickness is guaranteed.
The thickness of the first internal protection film 2 is 3-5 microns.
The thickness of the first external protection film 4 is 4-6 silk meters, and the whole thickness is guaranteed.
The utility model discloses a theory of operation: when the laser eavesdropping blocking protective film is used, the laser eavesdropping blocking protective film is fixed on the inner side of the wall of a room, the infrared absorption film adopts a nano alumina film, the nano alumina film absorbs the invaded infrared rays, and the infrared absorption film has certain light transmittance and does not influence daily use; the first internal protective film and the second internal protective film are made of tetrafluoroethylene non-woven base material films, and have light weight, good light transmission and air isolation, and can prevent the infrared absorption film from being oxidized; the first external protection film and the second external protection film are styrene-acrylic emulsion films which are transparent and waterproof, have good ageing resistance and can effectively protect the infrared absorption film, the first internal protection film and the second internal protection film. The thickness of the first internal protective film is consistent with that of the second internal protective film, and the thickness of the first external protective film is consistent with that of the second external protective film, so that the front side and the back side of the laser eavesdropping blocking protective film can not be distinguished, and the laser eavesdropping blocking protective film is convenient to use.
The present invention has been described in connection with the embodiments thereof, and the description is not intended to be limiting, and the embodiments shown in the drawings are only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.
Claims (5)
1. A laser eavesdropping blocking protective film comprising an infrared light absorbing film (1), characterized in that: the infrared absorption film (1) two sides are equipped with inside protection film (2) and inside protection film two (3) respectively, inside protection film (2) and inside protection film two (3) outside are equipped with outside protection film (4) and outside protection film two (5) respectively, infrared absorption film (1) adopts nanometer alumina film, inside protection film one (2) and inside protection film two (3) adopt the fabric base material film of tetrafluoroethylene, outside protection film one (4) and outside protection film two (5) adopt the styrene-acrylic emulsion film.
2. A laser eavesdropping-blocking protective film according to claim 1, wherein: the thickness of the first internal protection film (2) is consistent with that of the second internal protection film (3), and the thickness of the first external protection film (4) is consistent with that of the second external protection film (5).
3. A laser eavesdropping-blocking protective film according to claim 1, wherein: the thickness of the infrared light absorption film (1) is 2-4 silk meters.
4. A laser eavesdropping-blocking protective film according to claim 1, wherein: the thickness of the first internal protective film (2) is 3-5 microns.
5. A laser eavesdropping-blocking protective film according to claim 1, wherein: the thickness of the first external protection film (4) is 4-6 silk meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922294519.6U CN211917948U (en) | 2019-12-19 | 2019-12-19 | Laser eavesdropping blocking protective film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922294519.6U CN211917948U (en) | 2019-12-19 | 2019-12-19 | Laser eavesdropping blocking protective film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211917948U true CN211917948U (en) | 2020-11-13 |
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ID=73325203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922294519.6U Active CN211917948U (en) | 2019-12-19 | 2019-12-19 | Laser eavesdropping blocking protective film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211917948U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112680138A (en) * | 2021-01-21 | 2021-04-20 | 李玲 | Laser eavesdropping protective film and preparation method thereof |
-
2019
- 2019-12-19 CN CN201922294519.6U patent/CN211917948U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112680138A (en) * | 2021-01-21 | 2021-04-20 | 李玲 | Laser eavesdropping protective film and preparation method thereof |
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