Laser spot testing jig

Abstract

The utility model relates to a laser spot testing frame which comprises a base, a guide rail is vertically fixed on the base, a sliding block is connected to the guide rail in a sliding mode, a clamping jaw is fixed to the sliding block, a locking knob is arranged on the sliding block, photographic paper is placed on the base, the center of the photographic paper is located below the clamping jaw, and the locking knob is arranged on the base. And a pressing unit is arranged at the edge of the photographic paper. According to the utility model, the laser output handle is clamped by the clamping jaw instead of being held manually, so that the measurement error is reduced; the sliding rail and the sliding block are used for sliding connection, the distance between the photographic paper and the laser output handle can be changed, the target distance can be quickly adjusted through scales on the sliding rail, and adjustment is more convenient and accurate. The photographic paper is placed on the mica sheet material with low thermal conductivity and high temperature resistance, so that the measurement is more accurate; and a mode of fixing the photographic paper by magnetic attraction is used, so that the tester is safer.

Description

Technical Field

[0001] This utility model relates to the field of laser therapy instrument technology, and in particular to a laser spot testing frame. Background Technology

[0002] Semiconductor laser therapy devices are used clinically for rehabilitation therapy. The size of the laser spot is a crucial technical indicator. At the same laser energy, if the spot size is too small, the high energy density may cause skin burns; conversely, if the spot size is too large, the low energy density may result in ineffective treatment. Therefore, the laser spot size is an important technical indicator and usually needs to be measured. Since semiconductor laser therapy devices emit infrared light, which is invisible to the naked eye and has high power, one of the many methods for measuring laser spot size is the photographic paper method. This method works by using the heat generated by the laser irradiation; the photographic paper absorbs this heat and projects a laser shape (basically circular) onto the paper.

[0003] Currently, there are no complete sets of fixtures and tools available on the market for testing using the photographic paper method. Therefore, when measuring laser spot using the photographic paper method, the laser fiber or laser output handle is basically held by hand. Because light is divergent, measuring the size of a light spot at 3cm requires measuring the distance of the laser fiber or laser treatment handle from the photographic paper to 3cm using a ruler, while simultaneously holding the laser fiber or handle and illuminating the photographic paper with the laser to form an image. This method of operation introduces significant measurement errors due to human factors: 1. Even slight hand tremors and displacements during spot testing will introduce measurement errors; 2. If the laser fiber or handle is not perpendicular to the photographic paper, it will also introduce significant measurement errors; 3. Due to the high heat generated by the laser, placing the photographic paper on a wooden surface during testing can cause craters, posing a high risk. Placing the photographic paper on a metal surface will also cause the high thermal conductivity of the metal to conduct the heat away, resulting in incomplete image formation and measurement errors; 4. During testing, the high heat of the laser can cause slight deformation of the irradiated area of ​​the photographic paper. Therefore, the tester needs to hold the photographic paper in place during testing to prevent it from shifting from its original position and causing significant deviations. However, pressing the photographic paper with your hand could expose the tester to laser radiation.

[0004] Therefore, a laser spot testing fixture is needed to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model addresses the technical problems existing in the prior art by providing a laser spot testing frame.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A laser spot testing frame includes a base, a guide rail is vertically fixed on the base, a slider is slidably connected on the guide rail, a clamp is fixed on the slider, a locking knob is provided on the slider, photographic paper is placed on the base, the center of the photographic paper is located below the clamp, and a pressing unit is provided at the edge of the photographic paper.

[0007] Preferably, in the above-mentioned laser spot testing frame, the base is made of mica sheet material.

[0008] Preferably, in the laser spot testing fixture described above, the side of the guide rail is provided with scale lines along the length of the guide rail.

[0009] Preferably, in the laser spot testing frame described above, a rack is fixed to the front side of the guide rail, a gear is installed on the inner side of the slider, a manual dial is rotatably inserted into the side of the slider, the end of the manual dial is fixedly connected to the gear, and the gear meshes with the rack.

[0010] Preferably, in the laser spot testing frame described above, the base is provided with a plurality of magnet mounting holes, the plurality of magnet mounting holes are located at the periphery of the photographic paper, the clamping unit includes a plurality of magnets, a magnetic block is fixed inside the magnet mounting hole, the upper surface of the magnetic block is flush with the upper surface of the base, and the magnet corresponds one-to-one with the magnetic block.

[0011] Preferably, in the laser spot testing frame described above, the magnetic block is made of a magnetic material.

[0012] Preferably, in the laser spot testing frame described above, a guide rail bracket is fixed on the base, and the guide rail is mounted on the guide rail bracket.

[0013] Preferably, in the laser spot testing frame described above, the base and the guide rail bracket are fixedly connected by bolts.

[0014] Preferably, in the laser spot testing fixture described above, the rear side of the guide rail bracket is provided with a rib.

[0015] Preferably, in the laser spot testing frame described above, foot pads are fixed at the four corners of the bottom of the base.

[0016] The beneficial effects of this utility model are:

[0017] 1. The laser output handle is held by grippers, replacing manual hand-holding and reducing measurement errors;

[0018] 2. The sliding rail and slider connection allows for changing the distance between the photographic paper and the laser output handle. The target distance can be quickly adjusted using the scale on the sliding rail, making adjustment more convenient and precise.

[0019] 3. Use mica sheet material with low thermal conductivity and high temperature resistance to place the photographic paper on it, making the measurement more accurate;

[0020] 4. The use of magnetic attachment to fix the photographic paper makes testing safer for personnel. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 3 This is a bottom view of the base of this utility model;

[0024] Figure 4 for Figure 1 Enlarged view of a portion of point A in the middle.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Base, 2. Photo paper, 3. Magnet, 4. Guide rail bracket, 5. Rib plate, 6. Guide rail, 7. Rack, 8. Slider, 9. Manual dial, 10. Gripper, 11. Laser output handle, 12. Locking knob, 13. Foot pad, 14. Groove, 15. Bolt hole, 16. Magnet mounting hole. Detailed Implementation

[0027] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0028] like Figures 1-4 As shown, a laser spot testing frame includes a base 1 made of mica sheet, which provides insulation and low-loss thermal resistance, avoiding the high risk of burn marks on wooden table surfaces and the high thermal conductivity of metal, which would cause the laser heat to be conducted away, resulting in incomplete image formation on the photographic paper and ultimately test errors. Rubber feet 13 are fixed at each of the four corners of the base 1 to ensure the stability of the base 1's bottom surface.

[0029] A guide rail bracket 4 is fixed on the base 1, and the base 1 and the guide rail bracket 4 are connected by bolts. Specifically, the bottom of the base 1 is provided with a groove 14, and multiple bolt holes 15 are passed through the top wall of the groove 14. The bottom of the guide rail bracket 4 is provided with two oval holes. The bolts pass through the bottom of the bolt holes 15 and into the oval holes of the guide rail bracket 4, and are locked at the top with nuts, thereby fixing the guide rail bracket 4 to the base 1. The lower end of the bolt is located in the groove 14, so it will not affect the flatness of the bottom of the base 1. Ribs 5 are provided on the rear side of the guide rail bracket 4 to ensure the structural strength of the guide rail bracket 4.

[0030] The guide rail 6 is mounted on the guide rail bracket 4, and the guide rail 6 is perpendicular to the upper surface of the base 1. A slider 8 is slidably connected to the guide rail 6, and the slider 8 has a "U" shaped cross-section. A rack 7 is fixed to the front side of the guide rail 6, a gear is installed on the inner side of the slider 8, and a manual dial 9 is rotatably inserted into the side of the slider 8. The end of the manual dial 9 is fixedly connected to the gear, and the gear meshes with the rack 7. By rotating the manual dial 9, the gear can be rotated, thereby adjusting the height of the slider 8 through the interaction force of the gear and rack. The side of the guide rail 6 is provided with scale lines along the length of the guide rail, which facilitates quick adjustment of the height of the slider 8 to the target position. A locking knob 12 is provided on the slider 8, which locks the slider at the desired height after adjustment. A gripper 10 is fixed on the slider 8. The gripper 10 is used to hold the laser output handle 11. The laser output end of the laser output handle 11 faces downward. After the laser output handle 11 is firmly held, it is perpendicular to the upper surface of the base 1. It can be adjusted during the initial installation of the gripper 10 to ensure that the laser is perpendicular to the base 1.

[0031] Photographic paper 2 is placed on the base 1. Photographic paper, also known as photosensitive paper, photographic paper, or printing paper, is a material used in the traditional printing industry for developing photographs. Later, its application in the inkjet printing industry led to its simple name, photographic paper. The center of the photographic paper 2 is located below the gripper 10, and a clamping unit is located at the edge of the photographic paper 2. The base 1 has multiple magnet mounting holes 16 located around the perimeter of the photographic paper 2. Magnetic blocks, made of magnet or iron, are fixed inside the magnet mounting holes 16 with glue. The upper surface of the magnetic blocks is flush with the upper surface of the base 1. The clamping unit includes multiple magnets 3, each corresponding to a magnetic block. Since magnets cannot adhere to mica sheets, during testing, the photographic paper 2 is clamped by the magnetic attraction between the magnets 3 and their corresponding magnetic blocks.

[0032] Working principle: During testing, first fix the laser output handle 11 on the gripper 10, adjust the slider 8 to a suitable height and lock it, place the photographic paper 2 on the base 1, and press its edges together with the magnet 3. Then, emit a vertical laser beam through the laser output handle 11 towards the photographic paper 2. The photographic paper 2 will change under the action of infrared light, thereby displaying the laser spot area. Finally, turn off the laser output handle 11, remove the photographic paper 2, and measure the laser irradiated area on the photographic paper 2. Finally, determine whether the laser spot area within this distance range is qualified by measuring the data.

[0033] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A laser spot testing frame, characterized in that: Includes a base (1), on which a guide rail (6) is vertically fixed, and a slider (8) is slidably connected to the guide rail (6). A gripper (10) is fixed on the slider (8), and a locking knob (12) is provided on the slider (8). Photo paper (2) is placed on the base (1), with the center of the photo paper (2) located below the gripper (10). A pressing unit is provided at the edge of the photo paper (2).

2. The laser spot testing frame according to claim 1, characterized in that: The base (1) is made of mica sheet.

3. The laser spot testing frame according to claim 1, characterized in that: The guide rail (6) has scale lines on its side along the length of the guide rail.

4. The laser spot testing frame according to claim 1, characterized in that: A rack (7) is fixed to the front side of the guide rail (6), a gear is installed on the inner side of the slider (8), and a manual dial (9) is rotatably inserted into the side of the slider (8). The end of the manual dial (9) is fixedly connected to the gear, and the gear meshes with the rack (7).

5. The laser spot testing frame according to claim 1, characterized in that: The base (1) is provided with a plurality of magnet mounting holes (16), which are located at the periphery of the photographic paper (2). The pressing unit includes a plurality of magnets (3), and a magnetic block is fixed inside the magnet mounting hole (16). The upper surface of the magnetic block is flush with the upper surface of the base (1), and the magnet (3) corresponds to the magnetic block one by one.

6. The laser spot testing frame according to claim 5, characterized in that: The magnetic block is made of magnet.

7. The laser spot testing frame according to claim 1, characterized in that: The base (1) is fixed with a guide rail bracket (4), and the guide rail (6) is installed on the guide rail bracket (4).

8. The laser spot testing frame according to claim 7, characterized in that: The base (1) and the guide rail bracket (4) are fixedly connected by bolts.

9. The laser spot testing frame according to claim 7, characterized in that: The guide rail bracket (4) is provided with a rib plate (5) on its rear side.

10. The laser spot testing frame according to claim 1, characterized in that: Foot pads (13) are fixed at the four corners of the bottom of the base (1).

Images