CN216696029U - Device for detecting infrared laser blocking film - Google Patents
Device for detecting infrared laser blocking film Download PDFInfo
- Publication number
- CN216696029U CN216696029U CN202122679207.4U CN202122679207U CN216696029U CN 216696029 U CN216696029 U CN 216696029U CN 202122679207 U CN202122679207 U CN 202122679207U CN 216696029 U CN216696029 U CN 216696029U
- Authority
- CN
- China
- Prior art keywords
- lens
- laser
- blocking film
- lens group
- light
- 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
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model relates to a device for detecting an infrared laser blocking film, which comprises a laser emitting device and a lens group arranged between the laser emitting device and the blocking film and used for converging and collimating light rays, wherein a plurality of laser generators capable of emitting infrared light with different wavelengths parallel to the central axis of the lens group are arranged in the laser emitting device, the laser emitting device is provided with a light outlet for emitting the infrared light, and the projection of the lens group covers the projection of the light outlet on a plane vertical to the central axis of the lens group. The device meets the inspection requirements of different wave bands, relatively more comprehensively obtains the index data of the infrared laser blocking film, and has low cost; the laser emitting device and the lens group are relatively fixed in position, repeated calibration is not needed before each inspection, only the infrared laser blocking film is replaced, real-time detection can be performed in the production process, operation is simple, and inspection precision is high.
Description
Technical Field
The utility model relates to a film inspection device, which is suitable for inspecting an infrared laser blocking film.
Background
The existing high-tech monitoring means include laser eavesdropping, which refers to an eavesdropping technique for recovering sound by emitting laser to an article near a sound source and then collecting and analyzing vibration of the article caused by the sound source. The infrared laser blocking film is used for blocking infrared laser as the name implies, and the infrared laser blocking film is adhered on glass, so that the effect of preventing laser eavesdropping can be achieved.
The blocking performance of the infrared laser blocking film is mainly reflected by the spectral data, in the prior art, the spectral data is usually checked by adopting laser with a single wave band, but the laser with a single wave band can only correspondingly obtain partial data points in the infrared spectrum, and the product index cannot be comprehensively measured. If the laser inspection of different wave bands is used, the emitting position of the laser and the position of the film for receiving the laser cannot be kept consistent during multiple inspections, and the inspection precision is affected. To obtain complete spectral data, a spectrophotometer can be used for inspection, but because the cost is too high and the detection cannot be carried out in real time, the spectrophotometer is not widely used.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to provide an apparatus for inspecting an infrared laser blocking film.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the utility model provides a device for detecting an infrared laser blocking film, which comprises a laser emitting device and a lens group arranged between the laser emitting device and the blocking film and used for converging and collimating light rays, wherein the positions of the laser emitting device and the lens group are relatively fixed, in practical application, a receiver used for receiving blocking film detection data is arranged on one side of the blocking film, which is far away from the lens group, and the position of the receiver is relatively fixed relative to the laser emitting device and the lens group.
Be provided with a plurality of laser generators that can send the axis that is on a parallel with the battery of lens and the infrared light of different wavelengths in the laser emission device, satisfy the inspection demand of different wave bands, acquire more comprehensively relatively the index data of blocking the membrane, and compare in spectrophotometer, the cost that equipment consumes reduces by a wide margin. The laser emission device is provided with a light outlet for emitting infrared light, and the projection of the lens group covers the projection of the light outlet on a plane perpendicular to the central axis of the lens group.
The function of the lens group is similar to a beam expander, the beam expander is used for expanding the diameter of parallel input light beams to larger parallel output light beams, the function of the lens group is opposite to that of the beam expander, because the central axis of the caliber of the light outlet is not necessarily in the same straight line with the central axis of the lens group, part of laser emitted by the plurality of laser generators is necessarily relatively close to the central axis of the lens group, the other part of laser emitted by the plurality of laser generators is relatively far away from the central axis of the lens group, if the blocking film to be detected can be irradiated by the laser emitted by all the laser generators, the sampling area of the blocking film must be large enough, the receiving aperture of a receiver equipped with the device also needs to be correspondingly increased, when the lens group is added in the device, the laser relatively far away from the central axis can be refracted to a position relatively close to the central axis, and the problem is solved.
Furthermore, the lens group comprises a first lens with a relatively large diameter and a second lens with a relatively small diameter, the first lens is located on the light incident side of the lens group, the second lens is located on the light emergent side of the lens group, the light incident side is defined as the side, close to the laser emitting device, of the lens group, and the light emergent side is defined as the side, close to the to-be-inspected blocking film, of the lens group. On a plane vertical to the central axis of the lens group, the projection of the first lens covers the projection of the light outlet; the first lens is a convex lens.
Furthermore, the second lens is a convex lens, and the focal point of the second lens coincides with the focal point of the first lens.
Further, the second lens is a concave lens, and the second lens is placed between the first lens and the focal point thereof, specifically, the distance between the second lens and the focal point of the first lens needs to be determined according to the diameter of the actual second lens.
Further, the laser emitting device also comprises a shell, and the plurality of laser generators are integrated in the shell.
Further, each laser generator has an independent switch, and each laser generator is independently controlled.
Further, the emission end of each laser generator is provided with a collimator, or the light outlet of the laser emission device is provided with a collimator.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
the laser generator integrating infrared light with different wavelengths in the laser emitting device meets the inspection requirements of different wave bands, relatively more comprehensively obtains index data of the infrared laser blocking film, and the device is low in cost; the laser emitting device and the lens group are relatively fixed in position, repeated calibration is not needed before each inspection, only the infrared laser blocking film is replaced, real-time detection can be performed in the production process, operation is simple, and inspection precision is high.
Drawings
Some specific embodiments of the utility model will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic structural view of example 1 for inspecting an infrared laser blocking film of the present invention;
FIG. 2 is a schematic structural view of example 2 for inspecting an infrared laser blocking film of the present invention.
Wherein the reference numerals are as follows:
1. a laser emitting device; 11. a laser generator; 12. a housing; 2. an infrared laser blocking film; 3. a lens group; 31. a first lens; 32. a second lens; 4. a receiver.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
Referring to fig. 1, the device for inspecting an infrared laser blocking film 2 in this embodiment includes a laser emitting device 1 and a lens group 3, the positions of the laser emitting device 1 and the lens group 3 are relatively fixed, a laser beam emitted by the laser emitting device 1 irradiates the infrared laser blocking film 2 through the lens group 3, repeated calibration and adjustment of a laser incidence angle before each inspection are not needed, only the blocking film 2 is replaced, and real-time detection can be performed in a production process, the operation is simple, and the inspection precision is high. The infrared laser blocking film 2 is a film for blocking infrared laser as its name implies, and hereinafter referred to as a blocking film 2.
Specifically, laser emission device 1 includes shell 12, integrated a plurality of laser generator 11 in shell 12, supplies the light-emitting window that the infrared light jetted out, a plurality of laser generator 11 can send the infrared light that is on a parallel with the axis of battery of lens 3 and different wavelength, satisfy and block the membrane 2 and to the inspection demand of different wave bands, acquire the index data that blocks membrane 2 relatively more comprehensively, and compare in spectrophotometer, the cost of equipping the consumption reduces by a wide margin.
The lens group 3 is used for converging and collimating laser light emitted by the laser emitting device 1, and comprises a first lens 31 and a second lens 32, wherein the first lens 31 is located on the light incident side of the lens group 3, namely, on the side of the lens group 3 close to the laser emitting device 1, and the second lens 32 is located on the light emergent side of the lens group 3, namely, on the side of the lens group 3 close to the blocking film 2 to be inspected. The diameter of the first lens 31 is larger than that of the second lens 32, and the projection of the first lens 31 covers the projection of the light outlet on a plane perpendicular to the central axis of the lens assembly 3, that is, when the lens assembly 3 and the laser emitting device 1 are relatively fixedly arranged, the position of the light outlet corresponds to the position of the lens assembly 3, and all the laser light emitted through the light outlet can be emitted into the lens assembly 3 in a manner parallel to the central axis of the lens assembly 3. In the present embodiment, both the first lens 31 and the second lens 32 are convex lenses, and the focal point of the second lens 32 coincides with the focal point of the first lens 31.
In practical application, a receiver 4 for receiving inspection data of the blocking film 2 is arranged on the side of the blocking film 2 away from the lens group 3, and the position of the receiver 4 is fixed relative to the laser emitting device 1 and the lens group 3. The lens group 3 acts like a beam expander for expanding the diameter of a parallel input beam to a larger parallel output beam, the lens group 3 acts opposite to the beam expander, since the central axis of the aperture of the light outlet is not necessarily in the same line with the central axis of the lens assembly 3, a part of the laser light generated by the plurality of laser generators 11 is necessarily relatively close to the central axis of the lens assembly 3, and another part is relatively far away from the central axis of the lens assembly 3, if the blocking film 2 to be inspected can be irradiated by the laser light generated by all the laser generators 11, the sampling area of the blocking film 2 must be large enough, and the receiving aperture of the receiver 4 equipped with the device also needs to be increased correspondingly, when the lens group 3 is added in the device, the laser relatively far away from the central axis can be refracted to the position relatively close to the central axis, and the problems are solved. In addition, the diameter of the second lens 32 should be smaller than or equal to the receiving aperture of the receiver 4.
Preferably, each laser generator 11 has an independent switch, and each laser generator 11 is independently controlled. The laser generators 11 in this embodiment are turned on one by one at the time of inspection, and the blocking film 2 is inspected using only one wavelength band at a time. In practical applications, the laser generators 11 integrated in the laser emitting device 1 can be controlled by the same switch. The number of laser generators 11 controlled by the switch is not limited to the number mentioned in the present embodiment.
Preferably, the emission end of each laser generator 11 has a collimator, or the light exit port of the laser emitting device 1 has a collimator.
It should be noted that the receiver 4 is not to be understood as a limitation of the present invention, and the receiver 4 may be a device capable of receiving the performance data of the blocking film 2 in the prior art, because the receiver 4 is not a protection content of the present invention, the structure, principle, etc. of the receiver are not described herein in detail. In addition, the number of the laser generators 11 listed in the laser transmitter 1 is not limited to the number shown in the drawings.
Example 2
Referring to fig. 2, the present embodiment is different from embodiment 1 in that the second lens 32 is a concave lens and is disposed between the first lens 31 and the focal point thereof, and the specific distance from the focal point of the first lens 31 needs to be determined according to the diameter of the actual second lens 32.
Other structures and contents in this embodiment are the same as those in embodiment 1, and are not described herein again.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the utility model, and not to limit the scope of the utility model, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (7)
1. An apparatus for inspecting an infrared laser blocking film, characterized in that: including laser emission device (1), set up in laser emission device (1) with block between membrane (2) and be used for convergent light and collimated battery of lens (3), be provided with a plurality of laser generator (11) that can send the infrared light that are on a parallel with the axis of battery of lens (3) and different wavelengths in laser emission device (1), laser emission device (1) has the confession the light-emitting window that the infrared light jetted out, at the perpendicular to on the plane of battery of lens (3) axis, the projection of battery of lens (3) covers the projection of this light-emitting window.
2. The apparatus for inspecting an infrared laser blocking film according to claim 1, wherein: the lens group (3) comprises a first lens (31) with a relatively large diameter and a second lens (32) with a relatively small diameter, the first lens (31) is positioned on the light inlet side of the lens group (3), and the second lens (32) is positioned on the light outlet side of the lens group (3); on a plane perpendicular to the central axis of the lens group (3), the projection of the first lens (31) covers the projection of the light outlet; the first lens (31) is a convex lens.
3. The apparatus for inspecting an infrared laser blocking film according to claim 2, wherein: the second lens (32) is a convex lens, and the focal point of the second lens (32) coincides with the focal point of the first lens (31).
4. The apparatus for inspecting an infrared laser blocking film according to claim 2, wherein: the second lens (32) is a concave lens.
5. The apparatus for inspecting an infrared laser blocking film according to claim 1, wherein: the laser emitting device (1) further comprises a housing (12), and the plurality of laser generators (11) are integrated in the housing (12).
6. The apparatus for inspecting an infrared laser blocking film according to claim 1, wherein: each laser generator (11) is provided with an independent switch.
7. The apparatus for inspecting an infrared laser blocking film according to claim 1, wherein: the emission end of each laser generator (11) is provided with a collimator, or the light outlet is provided with a collimator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122679207.4U CN216696029U (en) | 2021-11-04 | 2021-11-04 | Device for detecting infrared laser blocking film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122679207.4U CN216696029U (en) | 2021-11-04 | 2021-11-04 | Device for detecting infrared laser blocking film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216696029U true CN216696029U (en) | 2022-06-07 |
Family
ID=81832946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122679207.4U Active CN216696029U (en) | 2021-11-04 | 2021-11-04 | Device for detecting infrared laser blocking film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216696029U (en) |
-
2021
- 2021-11-04 CN CN202122679207.4U patent/CN216696029U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102735633B (en) | Light path online calibration type cavity enhanced atmosphere trace gas detection system | |
| CN105606571B (en) | A kind of aspherical reflective laser induction excitation of spectra/collection system | |
| CN102221450B (en) | Tracking-pointing deviation measurement device for laser system | |
| CN112730383B (en) | Optical fiber array LIBS detection system for online detection | |
| CN104502304A (en) | Miniature curing near-infrared spectrometer based on virtual slit technology | |
| CN114910432A (en) | Optical gas sensor with LED emitter for emitting light of narrow bandwidth | |
| US20170281077A1 (en) | System with disease diagnosis and skin age measurement functions and handpiece used therewith | |
| CN108287058B (en) | Correct superpower laser M2The device and method of measuring system thermal deformation | |
| US20170023679A1 (en) | System and method for an edge injection etalon | |
| JP2023508607A (en) | Apparatus and method for mitigating interference in optical spectroscopic probes with parallel sample beams | |
| CN106841105B (en) | A kind of multi-wavelength near-infrared spectral measurement device for material identification | |
| CN103926200A (en) | CARS (coherent anti-stokes Raman scattering) and TDLAS (tunable diode laser absorption spectroscopy) collinear temperature measurement device | |
| CN105675581B (en) | A kind of free space gas Raman scattering collection device | |
| CN103353440A (en) | Device and method for measuring material diffuse reflectance by adopting gas absorption spectrum | |
| TW201625933A (en) | Lens array-based illumination for wafer inspection | |
| CN107064908A (en) | A kind of multi-wavelength polarizes Raman lidar beam splitting system | |
| CN216696029U (en) | Device for detecting infrared laser blocking film | |
| CN107389566B (en) | Device for collecting diffuse reflection light of sample in spectrometer | |
| CN109342026A (en) | A kind of detection method of grenz ray glancing incidence telescope angular resolution | |
| CN103698006A (en) | 45-degree annular illumination device used for on-line light splitting color photometer | |
| US7268871B2 (en) | Measuring head for planar measurement of a sample | |
| CN205958454U (en) | Dangerous gas monitoring device that leaks of reflective infrared laser industry of self -adaptation | |
| CN202794024U (en) | Sample cell used for measuring molecular spectral absorption | |
| CN112903547A (en) | High-concentration cloud and mist particle concentration measuring device based on double light sources | |
| CN106290173B (en) | Device and method for detecting multidimensional distribution of gas concentration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |