Area array laser homogenizing device

Abstract

An embodiment of the utility model discloses an area array laser homogenizing device, which comprises a casing, an interface, a front clamping block, a rear clamping block and a light guide rod, the interface is connected with a semiconductor laser pumping source through an optical fiber, the interface is connected with the middle of the top of the casing, an industrial lens is mounted in the middle of the bottom of the casing, and the front clamping block and the rear clamping block are mounted in the casing. The light guide rod is installed between the front clamping block and the rear clamping block, the top of the light guide rod is in butt joint with the connector, the bottom of the light guide rod is in butt joint with the industrial lens, the center line of the industrial lens, the center line of the light guide rod and the center line of the connector coincide, and the section of the light guide rod is square. And the interference caused by the laser in the working process of the PL is reduced.

Description

Technical Field

[0001] This utility model relates to the field of laser technology, specifically to a planar laser homogenization device. Background Technology

[0002] With the rapid development of photovoltaic technology, many new defects have emerged in the production process. Traditional EL testing methods can no longer meet the quality inspection requirements, and area array PL has become an indispensable testing item.

[0003] Photoluminescence (PL) array detection, also known as area array photoluminescence detection, is a technique that uses the principle of photoluminescence to detect and analyze surface-shaped objects or areas of objects. When electrons in a substance absorb photon energy, they transition from the ground state to an excited state. When the electrons return from the excited state to the ground state, they release excess energy in the form of light, producing photoluminescence. PL array detection uses a laser of a specific wavelength as the excitation source to illuminate the surface of the object being detected, causing it to emit photoluminescence. The emitted signals are then collected by a highly sensitive, high-resolution area array camera or detector and converted into electrical or digital signals. Finally, computer software processes and analyzes these signals to obtain relevant information about the detected object.

[0004] Area array PL detection requires a square spot as the excitation light. Existing shaping methods on the market have poor uniformity, blurred spot boundaries, irregular spot shapes, and low laser utilization. Utility Model Content

[0005] The purpose of this invention is to solve the problems mentioned in the background art. This invention provides a planar laser homogenization device that makes the shaped square light spot uniform and the light spot boundary clear, thereby reducing the interference caused by the laser in PL operation.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A laser homogenization device for an area array includes a housing, an interface, a front clamp, a rear clamp, and a light guide. The interface is connected to a semiconductor laser pump source via an optical fiber. The interface is connected to the top center of the housing. An industrial lens is installed at the bottom center of the housing. The front clamp and the rear clamp are installed inside the housing. The light guide is installed between the front clamp and the rear clamp. The top of the light guide is connected to the interface, and the bottom of the light guide is connected to the industrial lens. The center lines of the industrial lens, the light guide, and the interface coincide. The cross-section of the light guide is square.

[0008] Furthermore, the surface roughness of the light guide is less than 0.4, and the light guide is bonded to the front and rear clamping blocks by thermally conductive adhesive.

[0009] Furthermore, the light guide rod is fitted with the front and rear clamping blocks with clearance.

[0010] Further, the top and bottom of the front clamp block are each provided with two counterbores, the middle of the side of the front clamp block facing the rear clamp block is provided with a light rod mounting groove, the middle of the side of the rear clamp block facing the front clamp block is provided with a light rod mounting groove, and the two light rod mounting grooves form a light rod mounting groove.

[0011] Further, the four corners of the light rod mounting groove are provided with arc grooves.

[0012] Further, the bottom of the front clamp block and the bottom of the rear clamp block are each provided with a clamping block, and the bottom of the light rod is located on the upper end of the clamping block.

[0013] Further, the rear clamp block is provided with a connecting hole one and a connecting hole two, the connecting hole one corresponds to the counterbores, and the connecting hole two is located at the middle of the two groups of connecting hole ones.

[0014] Further, the shell is provided with a counterbore two corresponding to the connecting hole two.

[0015] Further, the bottom of the shell is provided with an industrial lens mounting groove, a clamping block mounting groove is arranged between the interface mounting groove and the industrial lens mounting groove, and the material of the shell is aluminum.

[0016] Further, the interface is an SMA interface.

[0017] Beneficial effects:

[0018] The utility model effectively solves the problem of uniformity generated by the square light spot formed by Gauss light spot, the light spot boundary is clear after the rectangular parallelepiped light rod with square end face is shaped, the shape is regular, the shaped light spot matches the battery piece shape, improves the utilization rate of laser, the light spot boundary is clear, reduces the interference caused by laser in PL work. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0020] Figure 1 It is the schematic view of the utility model;

[0021] Figure 2 It is the sectional view of the utility model;

[0022] Figure 3 It is the schematic view of the shell of the utility model;

[0023] Figure 4The shell is a cross-sectional view of the utility model;

[0024] Figure 5 The front clamp block is a schematic view of the utility model;

[0025] Figure 6 The front clamp block is a schematic view of the utility model from another perspective;

[0026] Figure 7 The rear clamp block is a schematic view of the utility model;

[0027] Figure 8 The rear clamp block is a schematic view of the utility model from another perspective;

[0028] Figure 9 The front clamp block and the rear clamp block are a schematic view of the utility model. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model.

[0030] As shown in the figure, the utility model discloses a surface array laser homogenization device, including shell 1, interface 2, front clamp block 3, rear clamp block 4 and light guide rod 5, interface 2 is connected with semiconductor laser pumping source through optical fiber, interface 2 is connected with the top middle part of shell 1, the bottom middle part of shell 1 is installed industrial lens 6, shell 1 is installed front clamp block 3 and rear clamp block 4, light guide rod 5 is installed between front clamp block 3 and rear clamp block 4, the top of light guide rod 5 is butt jointed with interface 2, the bottom of light guide rod 5 is butt jointed with industrial lens 6, the center line of industrial lens 6, light guide rod 5 and interface 2 coincides, the section of light guide rod 5 is square.

[0031] Laser is sent by semiconductor pumping source through optical fiber, is connected to the device on the present through interface 2, and laser light source is guided.

[0032] Laser light source is guided into light guide rod 5, and the section of light guide rod 5 is square, i.e. end face is square, and light guide rod 5 is glass rod of cuboid, and has total reflection condition to laser.Light guide rod 5 is formed into uniform square spot according to total reflection principle and is guided out from the bottom.

[0033] Industrial lens is enlarged to the size that conforms to use to spot, and the enlargement range is square with the side length of 200mm-600mm.

[0034] In the embodiment of the utility model, the surface roughness of light guide rod 5 is less than 0.4, and light guide rod 5 is pasted with front clamp block 3 and rear clamp block 4 through heat-conducting adhesive.

[0035] In an embodiment of the utility model, the light guide rod 5 is in clearance fit with the front clamp block 3 and the rear clamp block 4, preventing cracking caused by thermal deformation.

[0036] In an embodiment of the utility model, the top and bottom of the front clamp block 3 are each provided with two counterbores one 31, the middle of the side of the front clamp block 3 facing the rear clamp block 4 is provided with a light guide rod mounting groove one 32, the middle of the side of the rear clamp block 4 facing the front clamp block 3 is provided with a light guide rod mounting groove one 32, the two light guide rod mounting grooves one 32 form a light guide rod mounting groove 33, and the light guide rod 5 is mounted in the light guide rod mounting groove 33. The front clamp block 3 is connected with the rear clamp block 4 through the four counterbores one 31. After the light guide rod 5 is mounted in the front clamp block 3 and the rear clamp block 4, the front clamp block 3 and the rear clamp block 4 are connected into a whole by using fasteners, and then the whole is placed in the shell 1.

[0037] In an embodiment of the utility model, the light guide rod mounting groove 33 is provided with an arc-shaped groove 34 at the four corners.

[0038] In an embodiment of the utility model, the bottom of the front clamp block 3 and the bottom of the rear clamp block 4 are each provided with a clamping block 35, and the bottom of the light guide rod 5 is located at the upper end of the clamping block 35.

[0039] In an embodiment of the utility model, the rear clamp block 4 is provided with a connecting hole one 41 and a connecting hole two 42, the connecting hole one 41 corresponds to the counterbores one 31, and the connecting hole two 42 is located at the middle of the two groups of connecting hole one 41. The shell is connected with the rear clamp block 4 through fasteners, and the fasteners pass through the connecting hole two 42. Of course, the shell 1 itself is also mounted on the workbench through fasteners.

[0040] In an embodiment of the utility model, the shell 1 is provided with a counterbores two 101 corresponding to the connecting hole two 42. The fasteners connecting the shell with the rear clamp block 4 pass through the counterbores two 101.

[0041] In an embodiment of the utility model, the material of the shell 1 is aluminum, the top of the shell 1 is provided with an interface mounting groove 102, the bottom of the shell 1 is provided with an industrial lens mounting groove 103, a clamp block mounting groove 104 is arranged between the interface mounting groove and the industrial lens mounting groove, the lower end of the interface 2 is mounted at the interface mounting groove 102, the interface 2 is threadedly connected with the shell 1, and the top of the industrial lens 6 is mounted at the industrial lens mounting groove 103. The aluminum shell 1 plays a role in heat dissipation, and also plays a role in dust prevention and sealing after being connected with the industrial lens and the interface.

[0042] In an embodiment of the utility model, the interface 2 is an SMA interface.

[0043] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A two-dimensional laser homogenizer device, characterized by, The application relates to a light guide rod device, which comprises a shell, an interface, a front clamp block, a rear clamp block and a light guide rod, the interface is connected with a semiconductor laser pumping source through an optical fiber, the interface is connected with the middle of the top of the shell, an industrial lens is installed at the middle of the bottom of the shell, the front clamp block and the rear clamp block are installed in the shell, the light guide rod is installed between the front clamp block and the rear clamp block, the top of the light guide rod is connected with the interface, the bottom of the light guide rod is connected with the industrial lens, the center lines of the industrial lens, the light guide rod and the interface are coincident, and the cross section of the light guide rod is square.

2. The planar array laser homogenizing device of claim 1, wherein, The surface roughness of the light guide rod is less than 0.4, and the light guide rod is pasted with the front clamp block and the rear clamp block through heat-conducting glue.

3. The apparatus according to claim 2, wherein The light guide rod is in clearance fit with the front clamp block and the rear clamp block.

4. The apparatus according to claim 1, wherein The top and the bottom of the front clamp block are provided with two counterbores, the middle of the side of the front clamp block facing the rear clamp block is provided with a light guide rod mounting groove, the middle of the side of the rear clamp block facing the front clamp block is provided with a light guide rod mounting groove, the two light guide rod mounting grooves form a light guide rod mounting groove, and the light guide rod is installed in the light guide rod mounting groove.

5. The apparatus according to claim 4, wherein The four corners of the light guide rod mounting groove are provided with arc grooves.

6. The apparatus according to claim 4, wherein The bottom of the front clamp block and the bottom of the rear clamp block are provided with clamping blocks, and the bottom of the light guide rod is located on the upper end of the clamping blocks.

7. The apparatus according to claim 4, wherein The rear clamp block is provided with a connecting hole one and a connecting hole two, the connecting hole one corresponds to the counterbores, and the connecting hole two is located at the middle of the two groups of connecting hole ones.

8. The apparatus according to claim 7, wherein The shell is provided with a counterbore two, and the counterbore two corresponds to the connecting hole two.

9. The apparatus of claim 1, wherein, The bottom of the shell is provided with an industrial lens mounting groove, a clamp block mounting groove is arranged between the interface mounting groove and the industrial lens mounting groove, and the material of the shell is aluminum.

10. The apparatus according to claim 1, wherein The interface is an SMA interface.

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