Internal quality detection system for chalcogenide glass with high refractive index

Abstract

The utility model discloses an internal quality detection system for high-refractive-index chalcogenide glass. The internal quality detection system comprises a detection bracket, a detection aluminum plate, a laser, a beam expander, a reflection assembly, a focus lens assembly, a sample clamp assembly and an infrared camera assembly, the detection aluminum plate, the laser, the beam expander, the reflection assembly, the focus lens assembly, the sample clamp assembly and the infrared camera assembly are all mounted on the detection bracket; the laser, the beam expander, the reflection assembly, the focus lens assembly, the sample clamp assembly and the detection aluminum plate are sequentially arranged along the propagation direction of a light path; the detection aluminum plate is vertically arranged, and the infrared camera assembly is opposite to the detection aluminum plate; the laser, the beam expander, the reflection assembly, the focus lens assembly, the sample clamp assembly and the infrared camera assembly are all located on the same side of the detection aluminum plate. According to the system, the laser is used as a light source of the system for detecting the internal quality of the chalcogenide glass, high-refractive-index chalcogenide glass can penetrate through the light source, the requirement of a transmission imaging detection principle is met, and tellurium-based chalcogenide glass and the like can be detected.

Description

Technical Field

[0001] The utility model relates to a high-refractive-index chalcogenide glass internal quality detection system, belonging to the technical field of material internal quality detection. Background Art

[0002] Chalcogenide glass is an inorganic glass formed by using sulfur, selenium and tellurium in the VIA group of the periodic table as the main glass former elements, and introducing other metal or non-metal elements with weak electronegativity such as germanium, arsenic and antimony. Chalcogenide glass can be used to make infrared lenses and has very good application prospects in the fields of infrared remote sensing and infrared thermal imaging. In actual use, in order to determine whether there are defects inside the glass, it is necessary to detect the internal quality of the chalcogenide glass, such as whether there are impurities, bubbles, cracks, stripes, etc. inside the glass. The relevant detection systems are all manufactured based on the principle of transmission imaging. The most basic requirement based on this principle is that the light emitted by the light source of the detection system can pass through the chalcogenide glass. In other words, the wavelength of the light source of the detection system must be within the transmission range of the chalcogenide glass. According to the main former elements of chalcogenide glass, it can be divided into sulfur-based, selenium-based and tellurium-based chalcogenide glasses, and their short-wave transmission cutoff wavelengths are about 0.6μm, 0.8μm and 1.5μm, respectively, and the long-wave transmission cutoff wavelengths are about 12μm, 16μm and 25μm, respectively. Currently, the infrared light source wavelength used in commercial chalcogenide glass internal quality inspection systems is mostly 0.9μm, so it can only detect sulfur-based and selenium-based chalcogenide glasses, but cannot detect tellurium-based chalcogenide glasses.

[0003] In recent years, the market demand for infrared products has increased significantly, and users have more and more demands for reducing the thickness of infrared lenses, simplifying optical systems, and improving imaging quality. High refractive index chalcogenide glass has the advantages of high refractive index and large Abbe number. It can be used to assemble with common brands of chalcogenide glass to correct chromatic aberration and design smaller, lighter, and clearer infrared lenses. However, the component design of high refractive index chalcogenide glass is based on tellurium-based chalcogenide glass, so it also faces the problem of being unable to detect internal quality. The quality of the internal quality of high refractive index chalcogenide glass can directly affect the imaging quality of the assembled lens, so it is urgent to develop a system to detect its internal quality. Utility Model Content

[0004] The utility model provides a high refractive index chalcogenide glass internal quality detection system, which is suitable for the internal quality detection of tellurium-based and other high refractive index chalcogenide glasses.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows:

[0006] A high refractive index chalcogenide glass internal quality detection system, comprising a detection bracket, a detection aluminum plate, a laser, a beam expander, a reflection component, a focusing lens component, a sample fixture component and an infrared camera component;

[0007] The detection aluminum plate, laser, beam expander, reflector assembly, focusing lens assembly, sample fixture assembly and infrared camera assembly are all installed on the detection bracket;

[0008] The laser, the beam expander, the reflector assembly, the focusing lens assembly, the sample fixture assembly and the detection aluminum plate are arranged in sequence along the propagation direction of the light path;

[0009] The detection aluminum plate is set vertically, and the infrared camera assembly is located opposite to the detection aluminum plate; the laser, beam expander, reflector assembly, focusing lens assembly, sample fixture assembly and infrared camera assembly are all located on the same side of the detection aluminum plate.

[0010] In order to expand the diameter of the CO2 laser beam and reduce its divergence angle, this system places a beam expander 15 cm away from the light output end of the CO2 laser. The CO2 laser beam becomes a collimated beam after passing through the beam expander; the collimated beam is then reflected and deflected by the reflective component, and then emitted to the focusing lens component, and finally passes through the sample to be tested on the sample fixture component and falls on the detection aluminum plate. The infrared camera component collects images on the detection aluminum plate, and the internal quality of the sample to be tested can be known by analyzing the collected images.

[0011] As one of the specific implementation schemes, the detection bracket includes an aluminum profile bracket and a detection platform; the aluminum profile bracket is a cubic frame structure, the detection platform is installed on the top of the aluminum profile bracket, the detection aluminum plate, laser, beam expander, reflector assembly, focusing lens assembly, sample fixture assembly and infrared camera assembly are all installed on the detection platform, and the detection aluminum plate is vertically arranged at one end of the upper surface of the detection platform.

[0012] In order to improve stability, the detection platform is installed on the top of the aluminum profile bracket through connecting buckles, which has good stability and prevents shaking.

[0013] In order to facilitate movement and fixation, universal wheels and adjustable feet are provided at the four corners of the bottom of the aluminum profile bracket to facilitate movement and fixation. When the bottom of the adjustable feet is adjusted to touch the ground, a stable support can be formed. When the bottom of the adjustable feet is off the ground, the detection platform can be moved freely.

[0014] In order to improve the vibration resistance during movement, rubber damping isolation pads are installed between the detection platform and the aluminum profile bracket, and between the aluminum profile bracket and the universal wheel and adjustable foot cup. It has a good vibration isolation effect.

[0015] As one of the specific implementation solutions, the size of the detection platform is 1200mm*600mm*100mm (length*width*thickness).

[0016] In order to improve the detection accuracy, the upper surface of the detection platform is treated with a midi pattern to ensure that the optical platform has a smooth but non-reflective working surface.

[0017] In order to facilitate the adjustment and fixation of the positions of various components, the upper surface of the detection platform is provided with M6 threaded holes arranged in a matrix, with a hole spacing of 25*25mm; the detection aluminum plate, laser, beam expander, reflector assembly, focusing lens assembly, sample fixture assembly and infrared camera assembly are respectively connected to the detection platform by bolts. In order to facilitate the connection, threaded holes of the same specification are also provided on the bottom base of the aforementioned components, and the connection is achieved by bolts that simultaneously cooperate with the threaded holes on the detection platform and the threaded holes on the bottom base of each component.

[0018] In order to further improve the detection accuracy, the surface of the above-mentioned detection aluminum plate is subjected to fine sandblasting and anodizing treatment, so that it can be regarded as a Lambertian reflector, that is, the brightness remains unchanged in any reflection direction. The specific process of each treatment in this application refers to the prior art, and this application has no special improvement on the specific process, so it will not be repeated.

[0019] As one of the specific implementation schemes, the size of the above-mentioned detection aluminum plate is 400mm*400mm*8mm (length*width*height).

[0020] The detection aluminum plate used in this system will have a local temperature increase under CO2 laser irradiation. In order to prevent the change of infrared light emitted by the detection aluminum plate from affecting the judgment of the internal quality of the glass, this system also performs a constant temperature treatment on the detection aluminum plate.

[0021] The laser in the present application is a CO2 laser with an output wavelength of 9.3 μm, an average output power of 8 W, a power stability of ±10%, and a forced air cooling method.

[0022] As one of the specific implementation schemes, the reflection assembly includes a first reflector, a second reflector and a reflector mounting bracket; the second reflector and the first reflector are mounted on the reflector mounting bracket opposite to each other up and down, wherein the second reflector is on the top and the first reflector is on the bottom; the first reflector and the second reflector both form a 45° angle with the vertical direction, and the reflection surface of the first reflector and the reflection surface of the second reflector are arranged facing each other, and the extension line of the reflection surface of the first reflector and the extension line of the reflection surface of the second reflector form a 90° angle; the center height of the first reflector and the beam expander need to be maintained on the same horizontal line, and the center height of the second reflector and the focusing lens assembly need to be maintained on the same horizontal line.

[0023] The CO2 laser beam emitted by the CO2 laser first propagates to the beam expander for beam expansion, then passes through the first reflector in sequence, the propagation direction of the CO2 laser beam deflects 90 degrees clockwise, and then propagates to the second reflector, the propagation direction of the CO2 laser beam deflects 90 degrees clockwise again and shoots towards the focusing mirror assembly.

[0024] The focusing mirror assembly includes an adjustment seat support frame, a spatial filter, an adapter ring and a focusing mirror; the focusing mirror is installed on the adjustment seat support frame through the adapter ring; the spatial filter is installed on the adjustment seat support frame and is located downstream of the focusing mirror, and the center heights of the second reflector, the focusing mirror and the spatial filter must be kept on the same horizontal line. The CO2 laser beam passing through the focusing mirror will filter out some stray light after passing through the spatial filter, reducing the influence of the laser's Fraunhofer diffraction on the detection results.

[0025] The light path propagation direction of the present application is consistent with the direction from upstream to downstream.

[0026] In order to facilitate adjustment, the sample fixture assembly includes a fixture mounting bracket, an X-axis adjustment slide, a Z-axis adjustment slide, a fixture connecting plate and a PTS-50V clamp; the X-axis adjustment slide is mounted on the fixture mounting bracket along the X-axis, the Z-axis adjustment slide is mounted on the X-axis adjustment slide along the Y-axis, and the TS-50V clamp is mounted on the Z-axis adjustment slide through the fixture connecting plate. The sample to be tested is clamped on the PTS-50V clamp. By adjusting the X-axis adjustment slide and the Z-axis adjustment slide, the CO2 laser beam is irradiated on different areas of the sample to be tested, thereby realizing full-area detection of the sample. The CO2 laser that passes through the sample to be tested continues to propagate until it shines on the detection aluminum plate. Since the detection aluminum plate surface has been subjected to fine sandblasting anodizing treatment, it can be regarded as a Lambertian reflector, that is, the brightness remains unchanged in any reflection direction.

[0027] The PTS-50V type clamp is an existing lens clamp, and other lens clamps may also be used.

[0028] The infrared camera assembly includes an infrared camera, a support frame and a camera fixture; the infrared camera is clamped on the camera fixture, and the camera fixture is rotatably connected to the support frame, that is, the angle of the camera fixture is adjustable, so that the angle of the infrared camera can be adjusted as needed to better capture the image on the aluminum plate; the lens of the infrared camera faces the aluminum plate for inspection. As one of the specific implementation schemes, the focal length of the lens is 7mm, and the pixel is 640×312 (about 320,000).

[0029] The infrared camera is connected to the computer, and the image is collected and saved through the video capture card. Then, the computer will perform difference processing on the collected images to highlight the differences between the images and improve the detection accuracy. The defects inside the glass will be shown in the processed images. This application has no special improvements to the computer processing process, so it will not be repeated.

[0030] The optical path of the whole system: First, the CO2 laser emits a light beam, which becomes a collimated beam after passing through a beam expander, and then passes through two 45-degree reflectors in sequence. After the propagation direction is deflected 180 degrees clockwise, it passes through a focusing mirror, a spatial filter and a sample to be tested in sequence, and finally reaches the detection aluminum plate.

[0031] The high refractive index chalcogenide glass in the present application refers to tellurium-based chalcogenide glass.

[0032] The high refractive index chalcogenide glass internal quality detection system of the present application can be used not only for the detection of tellurium-based chalcogenide glass, but also for the detection of sulfur- and selenium-based chalcogenide glass.

[0033] The technologies not mentioned in this utility model are all referred to the prior art.

[0034] The utility model discloses a high refractive index chalcogenide glass internal quality detection system, which uses a laser as a light source of the chalcogenide glass internal quality detection system. The wavelength light can penetrate the high refractive index chalcogenide glass, and meets the requirements of the transmission imaging detection principle. The laser beam emitted by the laser is first propagated to the beam expander, and then reflected and deflected by the reflection component, and then emitted to the focusing lens component, and finally passes through the sample to be tested on the sample clamp component, and falls on the detection aluminum plate. The infrared camera component collects the image on the detection aluminum plate, and the internal quality of the sample to be tested can be known by analyzing the collected image; the structure is compact and reasonable, and the space is small; the operation is simple, and the accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the structure of the internal quality detection system of the high refractive index chalcogenide glass of the utility model;

[0036] Figure 2 for Figure 1 Left view of

[0037] Figure 3 for Figure 1 A top view of

[0038] Figure 4 for Figure 1 Stereoscopic image of

[0039] Figure 5 This is a schematic diagram of the structure of the detection bracket of the utility model;

[0040] Figure 6 This is a schematic diagram of the structure of the focusing lens assembly of the utility model;

[0041] Figure 7 This is a schematic diagram of the structure of the sample fixture assembly of the utility model

[0042] Figure 8This is a light path simulation diagram of the internal quality detection system of the high refractive index chalcogenide glass of the utility model;

[0043] In the figure, A01 is the detection bracket, A01-1 is the aluminum profile bracket, A01-2 is the detection platform, A01-3 is the detection aluminum plate, A02 is the laser, A03 is the beam expander, A04 is the sample fixture assembly, A04-1 is the fixture mounting bracket, A04-2 is the X-axis adjustment slide, A04-3 is the Z-axis adjustment slide, A04-4 is the fixture connecting plate, A04-5 is the PTS-50V type clamp, A05 is the focusing mirror assembly, A05-1 is the adjustment seat support frame, A05-2 is the spatial filter, A05-3 is the adapter ring, A05-4 is the focusing mirror, A06 is the reflection assembly, A06-1 is the first reflector, A06-2 is the second reflector, A06-3 is the reflector mounting bracket, A07 is the infrared camera assembly, A07-1 is the infrared camera, A07-2 is the support frame, and A07-3 is the camera fixture. DETAILED DESCRIPTION

[0044] In order to better understand the present invention, the content of the present invention is further explained below in conjunction with embodiments, but the content of the present invention is not limited to the following embodiments.

[0045] The directional words such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like in this application are based on the attached Figure 1 The relative orientation or positional relationship shown is only for the convenience of describing the present application, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] Example 1

[0047] like Figure 1-5 As shown, a high refractive index chalcogenide glass internal quality detection system includes a detection bracket A01, a detection aluminum plate A01-3, a laser A02, a beam expander A03, a reflection component A06, a focusing lens component A05, a sample fixture component A04 and an infrared camera component A07;

[0048] The detection aluminum plate A01-3, laser A02, beam expander A03, reflector assembly A06, focusing lens assembly A05, sample fixture assembly A04 and infrared camera assembly A07 are all installed on the detection bracket A01;

[0049] The laser A02, the beam expander A03, the reflector assembly A06, the focusing lens assembly A05, the sample fixture assembly A04 and the detection aluminum plate A01-3 are arranged in sequence along the propagation direction of the light path;

[0050] The detection aluminum plate A01-3 is set vertically, and the infrared camera assembly A07 is located opposite to the detection aluminum plate A01-3; the laser A02, the beam expander A03, the reflection assembly A06, the focusing lens assembly A05, the sample fixture assembly A04 and the infrared camera assembly A07 are all located on the same side of the detection aluminum plate A01-3.

[0051] In order to expand the diameter of the CO2 laser beam and reduce its divergence angle, this system places a beam expander 15 cm away from the light output end of the CO2 laser. The CO2 laser beam becomes a collimated beam after passing through the beam expander; the collimated beam is then reflected and deflected by the reflective component, and then emitted to the focusing lens component, and finally passes through the sample to be tested on the sample fixture component and falls on the detection aluminum plate. The infrared camera component collects images on the detection aluminum plate, and the internal quality of the sample to be tested can be known by analyzing the collected images.

[0052] Example 2

[0053] On the basis of Example 1, the following improvements were made: Figure 5 As shown, the detection bracket A01 includes an aluminum profile bracket A01-1 and a detection platform A01-2; the aluminum profile bracket A01-1 is a cubic frame structure, the detection platform A01-2 is installed on the top of the aluminum profile bracket A01-1 through connecting buckles, the detection aluminum plate A01-3, laser A02, beam expander A03, reflection assembly A06, focusing lens assembly A05, sample fixture assembly A04 and infrared camera assembly A07 are all installed on the detection platform A01-2, and the detection aluminum plate A01-3 is vertically arranged at one end of the upper surface of the detection platform A01-2.

[0054] Example 3

[0055] On the basis of Example 2, the following improvements were made: Figure 5As shown, in order to facilitate movement and fixation, universal wheels and adjustable feet are provided at the four corners of the bottom of the aluminum profile bracket A01-1, which are convenient for movement and fixation. When the bottom of the adjustable feet is adjusted to touch the ground, a stable support can be formed. When the bottom of the adjustable feet is adjusted off the ground, the detection platform can be moved freely. Rubber damping isolation pads are provided between the detection platform A01-2 and the aluminum profile bracket A01-3, and between the aluminum profile bracket A01-3 and the universal wheels and adjustable feet, which have a good vibration isolation effect. The size of the detection platform A01-2 is 1200mm*600mm*100mm in length*width*thickness, and the upper surface of the detection platform A01-2 is treated with midi grain. Ensure that the optical platform has a smooth but non-reflective working surface. In order to facilitate the adjustment and fixation of the positions of various components, the upper surface of the detection platform A01-2 is provided with M6 threaded holes arranged in a matrix, with a hole spacing of 25*25mm; the detection aluminum plate A01-3, laser A02, beam expander A03, reflector assembly A06, focusing lens assembly A05, sample fixture assembly A04 and infrared camera assembly A07 are respectively connected to the detection platform A01-2 by bolts. In order to facilitate the connection, threaded holes of the same specifications are also provided on the bottom base of the aforementioned components, and the connection is achieved through bolts that simultaneously cooperate with the threaded holes on the detection platform and the threaded holes on the bottom base of each component.

[0056] Example 4

[0057] On the basis of Example 3, the following improvements were made: In order to further improve the detection accuracy, the surface of the above-mentioned detection aluminum plate A01-3 was subjected to fine sandblasting and anodizing treatment, so it can be regarded as a Lambertian reflector, that is, the brightness in any reflection direction is constant. The size of the detection aluminum plate is 400mm*400mm*8mm in length*width*height. In order to avoid the change of infrared rays emitted by the detection aluminum plate affecting the determination of the internal quality of the glass, the present application also performs a constant temperature treatment on the detection aluminum plate.

[0058] Example 5

[0059] On the basis of Example 4, the following improvements are further made: the laser A02 is a CO2 laser, the output wavelength is 9.3 μm, the average output power is 8 W, the power stability is ±10%, and the cooling method is forced air cooling.

[0060] Example 6

[0061] On the basis of Example 5, the following improvements were further made: Figure 1As shown, the reflective assembly A06 includes a first reflector A06-1, a second reflector A06-2 and a reflector mounting bracket A06-3; the second reflector A06-2 and the first reflector A06-1 are mounted on the reflector mounting bracket A06-3 opposite to each other up and down, wherein the second reflector A06-2 is on the top and the first reflector A06-1 is on the bottom; the first reflector A06-1 and the second reflector A06-2 both form a 45° angle with the vertical direction, and the reflecting surface of the first reflector A06-1 and the reflecting surface of the second reflector A06-2 are arranged facing each other, and the extension line of the reflecting surface of the first reflector A06-1 and the extension line of the reflecting surface of the second reflector A06-2 form a 90° angle; the center height of the first reflector A06-1 and the beam expander A03 must be maintained on the same horizontal line, and the center height of the second reflector A06-2 and the focusing mirror assembly A05 must be maintained on the same horizontal line. The CO2 laser beam emitted by the CO2 laser first propagates to the beam expander for beam expansion, then passes through the first reflector in sequence, the propagation direction of the CO2 laser beam deflects 90 degrees clockwise, and then propagates to the second reflector, the propagation direction of the CO2 laser beam deflects 90 degrees clockwise again and shoots towards the focusing mirror assembly.

[0062] Example 7

[0063] On the basis of Example 6, the following improvements were further made: Figure 6 As shown, the focusing mirror assembly A05 includes an adjustment seat support frame A05-1, a spatial filter A05-2, an adapter ring A05-3 and a focusing mirror A05-4; the focusing mirror A05-4 is installed on the adjustment seat support frame A05-1 through the adapter ring A05-3; the spatial filter A05-2 is installed on the adjustment seat support frame A05-1 and is located downstream of the focusing mirror A05-4, and the center heights of the second reflector, the focusing mirror A05-4 and the spatial filter A05-2 need to be kept on the same horizontal line. The CO2 laser beam passing through the focusing mirror will filter out some stray light after passing through the spatial filter, reducing the influence of the Fraunhofer diffraction of the laser on the detection results.

[0064] Example 8

[0065] On the basis of Example 7, the following improvements were further made: Figure 7As shown, the sample fixture assembly A04 includes a fixture mounting bracket A04-1, an X-axis adjustment slide A04-2, a Z-axis adjustment slide A04-3, a fixture connecting plate A04-4 and a PTS-50V clamp A04-5; the X-axis adjustment slide A04-2 is slidably mounted on the fixture mounting bracket A04-1 along the X direction, the Z-axis adjustment slide A04-3 is slidably mounted on the X-axis adjustment slide A04-2 along the Y direction, and the TS-50V clamp A04-5 is mounted on the Z-axis adjustment slide A04-3 through the fixture connecting plate A04-4. The sample to be tested is clamped on the PTS-50V clamp A04-5, and by adjusting the X-axis adjustment slide and the Z-axis adjustment slide, the CO2 laser beam is illuminated on different areas of the sample to be tested, thereby realizing full-area detection of the sample. The CO2 laser that passes through the sample to be tested continues to propagate until it shines on the test aluminum plate. Since the test aluminum plate is anodized after fine sandblasting, it can be regarded as a Lambertian reflector, that is, the brightness remains unchanged in any reflection direction. During the test, the sample to be tested is clamped on the PTS-50V clamp. At this time, the center heights of the second reflector, focusing mirror A05-4, spatial filter A05-2 and the sample to be tested must be kept on the same horizontal line.

[0066] Example 9

[0067] On the basis of Example 8, the following improvements were further made: Figure 1 and Figure 4 As shown, the infrared camera assembly A07 includes an infrared camera A07-1, a support frame A07-2 and a camera fixture A07-3; the infrared camera A07-1 is clamped on the camera fixture A07-3, and the camera fixture A07-3 is rotatably connected to the support frame A07-2, that is, the angle of the camera fixture is adjustable, so that the angle of the infrared camera can be adjusted as needed to better capture the image on the detection aluminum plate; the lens of the infrared camera A07-1 is facing the detection aluminum plate A01-3.

[0068] In this example, the focal length of the infrared camera lens is 7mm, and the pixels are 640×312 (about 320,000). The infrared camera is connected to a computer, and the image is captured and saved through a video capture card. Then, the computer will perform difference processing on the captured images to highlight the differences between the images and improve the detection accuracy. The defects inside the glass will be shown in the processed images. This application does not make any special improvements to the computer processing process, so it will not be repeated.

[0069] The optical path simulation of the whole system can be seen in Figure 8 First, the CO2 laser emits a beam, which becomes a collimated beam after passing through a beam expander, and then passes through two 45-degree reflectors in sequence. After the propagation direction is deflected 180 degrees clockwise, it passes through a focusing mirror, a spatial filter, and a sample to be tested in sequence, and finally reaches the detection aluminum plate.

[0070] In order to improve the detection accuracy, this system will collect three images during the detection, namely the background image when there is no sample, the image when the standard film is placed, and the image when the sample to be tested is placed. Then, these three images are difference processed to highlight the difference between the sample to be tested and the standard film. Finally, the internal quality of the glass is determined by analyzing the difference. The specific steps are as follows:

[0071] 1) Place the internal quality inspection system of high refractive index chalcogenide glass in a clean room or ultra-clean room;

[0072] 2) Process the sample to be tested into a double flat sheet and polish both sides. There should be no pits, dirt or dust on the surface.

[0073] 3) Turn on the laser and computer;

[0074] 4) Collect background, that is, the image without sample;

[0075] 5) Place the standard sample on the holder and collect the image;

[0076] 6) Place the sample to be tested on the holder and collect images;

[0077] 7) Perform difference processing on the three collected images and present the processed image;

[0078] 8) Analyze the processed image and determine the internal quality of the glass.

[0079] The high refractive index chalcogenide glass internal quality detection system in the above-mentioned examples uses a 9.3μm CO2 laser as the light source of the chalcogenide glass internal quality detection system. The light of this wavelength can penetrate the tellurium-based chalcogenide glass, satisfying the requirements of the transmission imaging detection principle. The laser beam emitted by the laser first propagates to the beam expander, and then is reflected and deflected by the reflection component, and then is directed to the focusing lens component, and finally passes through the sample to be tested on the sample fixture component and falls on the detection aluminum plate. The infrared camera component collects the image on the detection aluminum plate, and the internal quality of the sample to be tested can be known by analyzing the collected image. The structure is compact and reasonable, and the space is small. The operation is simple and the accuracy is high.

Claims

1. A high refractive index chalcogenide glass internal quality detection system, Features: It includes a detection bracket (A01), a detection aluminum plate (A01-3), a laser (A02), a beam expander (A03), a reflection assembly (A06), a focusing lens assembly (A05), a sample fixture assembly (A04) and an infrared camera assembly (A07); The detection aluminum plate (A01-3), laser (A02), beam expander (A03), reflection assembly (A06), focusing lens assembly (A05), sample fixture assembly (A04) and infrared camera assembly (A07) are all installed on the detection bracket (A01); The laser (A02), the beam expander (A03), the reflector assembly (A06), the focusing lens assembly (A05), the sample fixture assembly (A04) and the detection aluminum plate (A01-3) are arranged in sequence along the propagation direction of the light path; The detection aluminum plate (A01-3) is set vertically, and the infrared camera assembly (A07) is located opposite to the detection aluminum plate (A01-3); the laser (A02), the beam expander (A03), the reflection assembly (A06), the focusing lens assembly (A05), the sample fixture assembly (A04) and the infrared camera assembly (A07) are all located on the same side of the detection aluminum plate (A01-3).

2. The high refractive index chalcogenide glass internal quality detection system according to claim 1, Features: The detection bracket (A01) includes an aluminum profile bracket (A01-1) and a detection platform (A01-2); the aluminum profile bracket (A01-1) is a cubic frame structure, the detection platform (A01-2) is installed on the top of the aluminum profile bracket (A01-1), the detection aluminum plate (A01-3), the laser (A02), the beam expander (A03), the reflection component (A06), the focusing lens component (A05), the sample fixture component (A04) and the infrared camera component (A07) are all installed on the detection platform (A01-2), and the detection aluminum plate (A01-3) is vertically arranged at one end of the upper surface of the detection platform (A01-2).

3. The high refractive index chalcogenide glass internal quality detection system according to claim 2, Features: The detection platform (A01-2) is installed on the top of the aluminum profile bracket (A01-1) through connecting buckles; universal wheels and adjustable feet are provided at the four corners of the bottom of the aluminum profile bracket (A01-1); rubber damping isolation pads are provided between the detection platform (A01-2) and the aluminum profile bracket (A01-1) and between the aluminum profile bracket (A01-1) and the universal wheels and adjustable feet.

4. The high refractive index chalcogenide glass internal quality detection system according to claim 2 or 3, Features: The upper surface of the detection platform (A01-2) is treated with a midi pattern; the upper surface of the detection platform (A01-2) is provided with M6 threaded holes arranged in a matrix, and the hole spacing is 25*25mm; the detection aluminum plate (A01-3), laser (A02), beam expander (A03), reflection assembly (A06), focusing lens assembly (A05), sample fixture assembly (A04) and infrared camera assembly (A07) are respectively connected to the detection platform (A01-2) by bolts.

5. The high refractive index chalcogenide glass internal quality detection system according to any one of claims 1 to 3, Features: The test aluminum plate (A01-3) is an aluminum plate that has been treated with a constant temperature; the surface of the test aluminum plate (A01-3) has been treated with fine sand blasting and anodizing.

6. The high refractive index chalcogenide glass internal quality detection system according to any one of claims 1 to 3, Features: Laser (A02) is CO 2 The laser has an output wavelength of 9.3μm, an average output power of 8W, a power stability of ±10%, and adopts a forced air cooling method.

7. The high refractive index chalcogenide glass internal quality detection system according to any one of claims 1 to 3, Features: The reflective assembly (A06) comprises a first reflector (A06-1), a second reflector (A06-2) and a reflector mounting bracket (A06-3); the second reflector (A06-2) and the first reflector (A06-1) are mounted on the reflector mounting bracket (A06-3) in an upper and lower relative manner, wherein the second reflector (A06-2) is on the upper side and the first reflector (A06-1) is on the lower side; the first reflector (A06-1) and the second reflector (A06-2) are both in a vertical direction to form a The first reflector (A06-1) and the second reflector (A06-2) are arranged at an angle of 45°, and the reflective surface of the first reflector (A06-1) and the reflective surface of the second reflector (A06-2) are arranged to face each other, and the extension line of the reflective surface of the first reflector (A06-1) and the extension line of the reflective surface of the second reflector (A06-2) form an angle of 90°; the center heights of the first reflector (A06-1) and the beam expander (A03) must be maintained on the same horizontal line, and the center heights of the second reflector (A06-2) and the focusing lens assembly (A05) must be maintained on the same horizontal line.

8. The high refractive index chalcogenide glass internal quality detection system according to claim 7, Features: The focusing mirror assembly (A05) comprises an adjustment seat support frame (A05-1), a spatial filter (A05-2), an adapter ring (A05-3) and a focusing mirror (A05-4); the focusing mirror (A05-4) is installed on the adjustment seat support frame (A05-1) through the adapter ring (A05-3); the spatial filter (A05-2) is installed on the adjustment seat support frame (A05-1) and is located downstream of the focusing mirror (A05-4), and the center heights of the second reflector, the focusing mirror (A05-4) and the spatial filter (A05-2) need to be maintained on the same horizontal line.

9. The high refractive index chalcogenide glass internal quality detection system according to any one of claims 1 to 3, Features: The sample fixture assembly (A04) includes a fixture mounting bracket (A04-1), an X-axis adjustment slide (A04-2), a Z-axis adjustment slide (A04-3), a fixture connecting plate (A04-4) and a PTS-50V clamp (A04-5); the X-axis adjustment slide (A04-2) is slidably mounted on the fixture mounting bracket (A04-1) along the X direction, the Z-axis adjustment slide (A04-3) is slidably mounted on the X-axis adjustment slide (A04-2) along the Y direction, and the TS-50V clamp (A04-5) is mounted on the Z-axis adjustment slide (A04-3) through the fixture connecting plate (A04-4).

10. The high refractive index chalcogenide glass internal quality detection system according to any one of claims 1 to 3, Features: The infrared camera assembly (A07) includes an infrared camera (A07-1), a support frame (A07-2) and a camera fixture (A07-3); the infrared camera (A07-1) is clamped on the camera fixture (A07-3), and the camera fixture (A07-3) is rotatably connected to the support frame (A07-2); the lens of the infrared camera (A07-1) faces the detection aluminum plate (A01-3).

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