A laser light path adjusting device

Abstract

The utility model provides a kind of laser optical path adjusting device, it is related to laser technology field, the laser optical path adjusting device includes lamp room, horizontal glass steel, vertical glass steel, high pressure plate, detection plate, xenon lamp, plasma, light machine and positioning tool;Hollow chamber is equipped in lamp room;Horizontal glass steel is set in hollow chamber and is close to one side surface setting, forms a sealed chamber;Vertical glass steel is set in middle chamber, and sealed chamber is separated into first chamber and second chamber;High pressure plate and detection plate are located in first chamber;Xenon lamp is fixedly installed in lamp room inner wall and is perpendicular to horizontal glass steel;Plasma is located in xenon lamp;Light machine is installed on positioning tool and is located in second chamber.Light machine is positioned by the detachable connection of positioning tool and lamp room inner wall, and the first side and the second side of light machine are abutted, to position light machine, one part can be realized, greatly reduce the number of parts, simplify structure, facilitate structure miniaturization.

Description

Technical Field

[0001] This utility model relates to the field of laser technology, and in particular to a laser optical path adjustment device. Background Technology

[0002] In the fields of life sciences and materials science, researchers use light sources with strong light output capabilities over a wide spectral range. Laser-pumped broadband light sources maintain plasma discharge and emit light by laser pumping, which has a long lifespan, high stability and brightness, and small size. They avoid the various defects caused by using electrically driven electrodes, and are therefore widely used in UV-Vis (ultraviolet-visible absorption) spectroscopy, environmental analysis, and material property characterization. However, the laser beam is focused by a lens to illuminate the bulb, which requires strict alignment of the laser beam path.

[0003] To address the above issues, the prior art, including utility model with publication number CN220190121U, discloses a laser emission light path adjustment device. An O-ring gasket fixes one end of a heat pipe, and the other end of the heat pipe is engaged by an adjusting spring and two M3 threaded pins. Adjusting the threaded pins is sufficient to adjust the propagation direction of the laser emission light. At the same time, the O-ring gasket is elastic, and the adjusting spring is not easily deformed, ensuring the stability of the laser after adjustment and providing strong shock resistance.

[0004] However, in the aforementioned patents, if adjustment is required in two or more directions, a corresponding number of threaded pins, adjusting springs, and O-ring washers are needed, resulting in a large number of parts and a complex structure, which is not conducive to miniaturization. Utility Model Content

[0005] In view of this, the present invention proposes a laser optical path adjustment device to solve the technical problem mentioned in the background art that when adjustment is required in two or more directions, the number of parts is large, the structure is complex, and it is not conducive to the miniaturization of the structure.

[0006] The technical solution of this utility model is implemented as follows: This utility model provides a laser optical path adjustment device, including a lamp chamber, a horizontal fiberglass enclosure, a vertical fiberglass enclosure, a high-voltage plate, a detection plate, a xenon lamp, a plasma device, an optomechanical unit, and a positioning fixture, wherein: The lamp chamber is provided with a hollow cavity; The horizontal fiberglass is disposed in the hollow cavity and is located near one side, forming a sealed cavity; The vertical fiberglass is disposed in the intermediate chamber and divides the sealed chamber into a first chamber and a second chamber; The high-voltage plate and the detection plate are located in the first chamber; The xenon lamp is fixedly installed on the inner wall of the lamp chamber and perpendicular to the horizontal fiberglass; The plasma is located in the xenon lamp; The optical engine is mounted on the positioning fixture and located in the second chamber, and the light emitted by the optical engine irradiates the plasma; The positioning fixture is detachably connected to the inner wall of the lamp chamber and abuts against the first and second sides of the optical engine to position the optical engine.

[0007] Based on the above technical solutions, preferably, the positioning fixture is provided with a connecting hole and an adjusting hole, the connecting hole being a round hole and the adjusting hole being an oblong hole; it also includes a pin, the pin passing through the connecting hole or the adjusting hole and connecting to the inner wall of the lamp chamber.

[0008] Based on the above technical solutions, preferably, a gasket is also included, which is installed between the positioning fixture and the optical engine.

[0009] Based on the above technical solutions, preferably, the xenon lamp includes a lamp holder and a lamp tube, the lamp holder is provided with a guide pin, the inner wall of the lamp chamber is provided with a pin hole, and the guide pin and the pin hole adopt a transition fit.

[0010] Based on the above technical solutions, preferably, the lamp chamber includes a main body, an upper cover, a lower cover, and a front cover. The horizontal fiberglass is installed on the main body, the upper cover is connected to the top of the main body, the lower cover is connected to the bottom of the main body, the front cover is connected to the front end of the main body, and the xenon lamp is installed on the front cover.

[0011] Based on the above technical solutions, preferably, the upper cover and the lower cover are respectively provided with a first mounting groove and a second mounting groove, and also include a rubber plate. The rubber plate is installed in both the first mounting groove and the second mounting groove, and the two ends of the vertical fiberglass are respectively locked in the two rubber plates.

[0012] Based on the above technical solutions, preferably, the lamp chamber is provided with heat dissipation fins on the side wall where the optical engine is installed, and the heat dissipation fins are provided with a cooling fan.

[0013] Based on the above technical solutions, preferably, the vertical fiberglass is made of ceramic materials and asbestos.

[0014] The laser optical path adjustment device of this invention has the following advantages over the prior art: (1) The positioning fixture is detachably connected to the inner wall of the lamp chamber and abuts against the first and second sides of the optical engine to position the optical engine. This can be achieved with a single part, which greatly reduces the number of parts, simplifies the structure, and is conducive to the miniaturization of the structure. In addition, the vertical fiberglass divides the sealed chamber into a first chamber and a second chamber, which isolates the heat generated by the optical engine in the second chamber from the first chamber, reduces the impact of the heat generated by the light source system on the high voltage plate and detection plate in the first chamber, and improves the reliability of the device. (2) The positioning fixture is provided with a connecting hole and an adjustment hole. The connecting hole is a round hole and the adjustment hole is an oblong hole. When no adjustment is needed, the pin passes through the connecting hole and connects to the inner wall of the lamp chamber. When adjustment is needed, the pin passes through the adjustment hole and connects to the inner wall of the lamp chamber, so that the position of the optical engine can be finely adjusted. (3) The shims are installed between the positioning fixture and the optical engine. The thickness and number of the shims are used to eliminate the positional deviation of the xenon lamp production electrode and the assembly error between the optical engine and the xenon lamp, thereby improving the adjustment efficiency. (4) The lamp holder is provided with a guide pin and the lamp chamber wall is provided with a pin hole. The guide pin and the pin hole are in transition fit, which can improve the convenience and accuracy of xenon lamp installation. (5) Heat dissipation fins are provided on the side wall of the lamp chamber where the optical engine is installed. A cooling fan is provided on the heat dissipation fins. The heat generated by the optical engine is transferred to the side wall of the lamp chamber. The cooling fan accelerates the air convection and quickly diffuses the heat to the surrounding air, reducing the impact of the heat generated by the optical engine on the high voltage board and the detection board. (6) The upper cover and the lower cover are respectively provided with a first mounting groove and a second mounting groove. The rubber plate is installed in both the first mounting groove and the second mounting groove. The two ends of the vertical fiberglass are respectively locked in the two rubber plates to prevent the vertical fiberglass from being damaged by collision with the lamp chamber due to vibration during transportation and use, thereby improving the reliability of the device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a cross-sectional view from one perspective of the laser optical path adjustment device in this embodiment of the present invention. Figure 2 This is a cross-sectional view from another perspective of the laser optical path adjustment device in this embodiment of the present invention; Figure 3 This is an exploded view of the laser optical path adjustment device in an embodiment of this utility model; Figure 4 This is a longitudinal sectional view of the laser optical path adjustment device in an embodiment of the present invention; Figure 5 This is a schematic diagram of the positioning fixture in an embodiment of the present utility model.

[0017] Explanation of reference numerals in the attached drawings: 1-Lamp chamber, 2-Horizontal fiberglass, 3-Vertical fiberglass, 4-High-pressure plate, 5-Detection plate, 6-Xenon lamp, 7-Plasma, 8-Optics and mechanics, 9-Positioning fixture, 10-Gasket, 20-Rubber plate, 30-Heat dissipation fins; 100 - Sealed chamber, 110 - First chamber, 120 - Second chamber; 11-Main body, 12-Upper cover, 121-First mounting slot, 13-Lower cover, 131-Second mounting slot, 14-Front cover; 61-Lamp holder, 62-Lamp tube, 63-Anode, 64-Cathode; 91-Connection hole, 92-Adjustment hole. Detailed Implementation

[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0019] Reference Figures 1-5 As shown in the embodiment of this utility model, a laser optical path adjustment device is proposed, including a lamp chamber 1, a horizontal fiberglass 2, a vertical fiberglass 3, a high-voltage plate 4, a detection plate 5, a xenon lamp 6, a plasma 7, an optomechanical unit 8, and a positioning fixture 9, wherein: The lamp chamber 1 is provided with a hollow cavity; the material of the lamp chamber 1 is 6061-T6 aluminum alloy with high thermal conductivity. The horizontal fiberglass 2 is disposed in the hollow cavity and is located near one side, forming a sealed cavity 100; The vertical fiberglass 3 is disposed in the intermediate chamber and divides the sealed chamber 100 into a first chamber 110 and a second chamber 120. The vertical fiberglass 3 can be made of ceramic material and asbestos, with ceramic material as the matrix material and asbestos as the reinforcing material. The ceramic material can provide better thermal insulation between the first chamber and the second chamber. The high-pressure plate 4 and the detection plate 5 are located in the first chamber 110; The xenon lamp 6 is fixedly installed on the inner wall of the lamp chamber 1 and perpendicular to the horizontal fiberglass 2; The plasma 7 is located in the xenon lamp 6; The optical engine 8 is mounted on the positioning fixture 9 and located in the second chamber 120. The light emitted by the optical engine 8 irradiates the plasma 7. The positioning fixture 9 is detachably connected to the inner wall of the lamp chamber 1 and abuts against the first and second sides of the optical engine 8 to position the optical engine 8.

[0020] It should be noted that the beam from the optomechanical system 8 is directed towards the gap between the cathode 64 and anode 63 of the xenon lamp 6, illuminating the xenon lamp 6. The gap between the cathode 64 and anode 63 forms the effective area for the laser to align with the xenon lamp 6. Based on experience with the optomechanical system 8 illuminating the xenon lamp 6, the optomechanical system 8 can illuminate the xenon lamp 6 when the laser beam is directed towards the effective area between the two electrodes. According to the assembly relationship between the optomechanical system 8 and the xenon lamp 6, the distance between the optomechanical system 8 and the electrodes has no effect on the effective illuminating area of ​​the xenon lamp 6. Therefore, the positional deviation between the xenon lamp 6 and the optomechanical system 8 in the Y direction does not need to be adjusted. Thus, to facilitate the assembly of the optomechanical system 8, the tooling design limits its position in the Y direction. Based on the electrode positional accuracy achievable in the xenon lamp 6 manufacturing process, the coaxiality of the cathode 64 and anode 63 with the lamp holder 61 during the manufacturing process can be less than 1.6. This deviation causes a lateral shift in the effective illuminating area of ​​the xenon lamp 6, significantly affecting the effective illuminating area of ​​the xenon lamp 6. Therefore, the positional deviation between the tip of the cathode 64 of the xenon lamp 6 and the upper surface of the lamp holder 61 is less than 1. This deviation causes the effective illuminating area of ​​the xenon lamp 6 to shift vertically, significantly affecting the beam direction of the optomechanical 8 towards the effective illuminating area of ​​the xenon lamp 6 motor. The positional deviation of the xenon lamp 6's production electrodes, combined with the assembly errors of the optomechanical 8 and the xenon lamp 6, necessitates that the tooling design ensure the optomechanical 8 has X and Z direction adjustment capabilities.

[0021] The laser optical path adjustment device proposed in this embodiment is detachably connected to the inner wall of the lamp chamber 1 through the positioning fixture 9, and abuts against the first and second sides of the optomechanical system 8 to position the optomechanical system 8. This can be achieved with a single part, which greatly reduces the number of parts, simplifies the structure, and is conducive to structural miniaturization. In addition, the vertical fiberglass 3 divides the sealed chamber 100 into a first chamber 110 and a second chamber 120, which isolates the heat generated by the optomechanical system 8 in the second chamber from the first chamber, reduces the impact of heat generated by the light source system on the high-voltage plate 4 and the detection plate 5 in the first chamber, and improves the reliability of the device.

[0022] In some embodiments, the positioning fixture 9 is provided with a connecting hole 91 and an adjusting hole 92. The connecting hole 91 is a round hole, and the adjusting hole 92 is an oblong hole. It also includes a pin, which passes through the connecting hole 91 or the adjusting hole 92 and connects to the inner wall of the lamp chamber 1. When no adjustment is needed, the pin passes through the connecting hole 91 and connects to the inner wall of the lamp chamber 1. When the optomechanism 8 cannot light the xenon lamp 6, the pin passes through the adjusting hole 92 and connects to the inner wall of the lamp chamber 1, allowing for fine adjustment of the position of the optomechanism 8 in the X direction to enable the optomechanism 8 to light the xenon lamp 6. The pin and the connecting hole 91 adopt an H7 / k6 transition fit for good centering and high positioning accuracy.

[0023] In some embodiments, the laser optical path adjustment device further includes a shim 10, which is installed between the positioning fixture 9 and the optomechanical system 8. By installing the shim 10 between the positioning fixture 9 and the optomechanical system 8, and by adjusting the thickness and number of the shims 10, positional deviations of the xenon lamp 6 production electrode and assembly errors between the optomechanical system 8 and the xenon lamp 6 can be eliminated, thereby improving adjustment efficiency. The shims 10 are made of 304 stainless steel, which has good hardness and strength.

[0024] In some embodiments, the xenon lamp 6 includes a lamp holder 61 and a lamp tube 62. The lamp holder 61 is provided with a guide pin, and the inner wall of the lamp chamber 1 is provided with a pin hole. The guide pin and the pin hole are fitted with an H7 / k6 transition fit. By providing a guide pin on the lamp holder 61 and a pin hole on the inner wall of the lamp chamber 1, and by using an H7 / k6 transition fit between the guide pin and the pin hole, the convenience and accuracy of the xenon lamp 6 installation can be improved. The positional accuracy of the pin hole and the connecting hole 91 is set to 0.05.

[0025] In some embodiments, the lamp chamber 1 includes a main body 11, an upper cover 12, a lower cover 13, and a front cover 14. A transverse fiberglass 2 is mounted on the main body 11. The upper cover 12 is connected to the top of the main body 11, the lower cover 13 is connected to the bottom of the main body 11, and the front cover 14 is connected to the front end of the main body 11. The xenon lamp 6 is mounted on the front cover 14. The main body 11, upper cover 12, lower cover 13, and front cover 14 form the hollow cavity.

[0026] In some embodiments, the upper cover 12 and the lower cover 13 are respectively provided with a first mounting groove 121 and a second mounting groove 131, and also include rubber plates 20. The rubber plates 20 are installed in both the first mounting groove 121 and the second mounting groove 131, and the two ends of the vertical fiberglass 3 are respectively secured in the two rubber plates 20. The two rubber plates 20 support the two ends of the vertical fiberglass 3, preventing damage from collisions between the vertical fiberglass 3 and the lamp chamber 1 caused by vibrations during transportation and use, thus improving the reliability of the device.

[0027] In some embodiments, the lamp chamber 1 has heat dissipation fins 30 on the side wall where the optomechanism 8 is installed, and a cooling fan is mounted on the heat dissipation fins 30. Through the heat dissipation fins 30 on the side wall (i.e., the main body 11) where the optomechanism 8 is installed, and the cooling fan mounted on the heat dissipation fins 30, the heat generated by the optomechanism 8 is transferred to the side wall of the lamp chamber 1. The cooling fan accelerates air convection, rapidly dissipating the heat to the surrounding air, thus reducing the impact of the heat generated by the optomechanism 8 on the high-voltage board 4 and the detection board 5.

[0028] The working principle of the laser optical path adjustment device in this embodiment of the utility model is as follows: First, the pin is passed through the connecting hole 91 and connected to the inner wall of the lamp chamber 1. A positioning fixture 9 is then installed, and the optical engine 8 is installed through the positioning fixture 9. At this time, the first and second sides of the optical engine 8 are in contact with the positioning fixture 9. The system checks whether the optical engine 8 can illuminate the xenon lamp 6. The result of the optical engine 8 beam aligning with the xenon lamp 6 can be divided into two cases: First, the optomechanical system 8 must be able to illuminate the xenon lamp 6, meaning the beam must be within the effective illumination area. This effective illumination area has a certain size, therefore, the positional deviation of the xenon lamp 6 electrodes and the optomechanical system 8 can be accommodated when the optomechanical system 8 illuminates the xenon lamp 6. To ensure that the beam from the optomechanical system 8 is centered within the effective illumination area, the positional deviation of the xenon lamp 6 and the optomechanical system 8 is reduced through both design and assembly processes. When assembling the optical engine 8, the internal threads of the mounting holes on the front cover 14 plate and the pins are fitted with H6 and 6h precision, which can accurately position and disassemble. When assembling the optical engine 8, the positioning fixture 9 is used to limit the optical engine 8 in the X and Y directions. The pins are used to pass through the two connecting holes 91 and connect to the inner wall of the lamp chamber 1. The gap between the optical engine 8 and the base plate is set to 0.5mm. Two 0.2mm thick shims 10 and one 0.1mm thick shim 10 are set in the gap (to facilitate the subsequent adjustment of the position of the optical engine 8 in the negative X-axis direction. If the optical engine 8 needs to be adjusted in the negative Z-axis direction, the shim 10 can be removed). That is, the fixture ensures that the laser beam of the optical engine 8 is pointed to the middle of the gap. The second scenario is when the xenon lamp 6 fails to align with the optical engine 8, causing the laser beam to be outside the effective gap area. In this case, it may be necessary to adjust the distances in the X and Z directions of the optical engine 8. A color camera should be used to image the xenon lamp 6 pointing from the optical engine 8 in the XZ plane. The image should be calibrated to observe the laser beam and electrode positions. Using the position of the plasma 7 at the midpoint between the anode and cathode 63 as a standard, the required adjustments in the X and Z directions can be calculated. First, adjust the distance in the X direction. If adjustment in the negative X-axis direction is required, remove the two pins passing through the two connecting holes 91 (do not remove the connecting screws of the optical engine 8 at this time). First, adjust the position of the positioning fixture 9 by placing a shim 10 between the contact surface of the positioning fixture 9 and the optical engine 8. The thickness of the shim 10 is the distance that the optical engine 8 needs to be adjusted in the negative X-axis direction. Then, fix the position of the positioning fixture 9 by passing the pins through the two adjusting holes 92, remove the shim 10, and finally position the optical engine 8 using the positioning fixture 9 after the position adjustment is completed. If adjustment in the positive X-axis direction is required, remove the connecting screws of the optical engine 8 (do not remove the two pins passing through the two connecting holes 91), position the optical engine 8 using the "positioning fixture 9 + shim 10" method, where the thickness of the shim 10 is the distance that the optical engine 8 needs to be adjusted in the positive X-axis direction, and then install the connecting screws of the optical engine 8. Then, adjust the Z-direction. When removing the connecting screws of the optical engine 8, adjust the position of the optical engine 8 in the Z-direction. If it needs to be adjusted in the positive Z-axis direction, add a shim 10 of the corresponding thickness. If it needs to be adjusted in the negative Z-axis direction, reduce the shim 10 of the corresponding thickness that has been placed.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A laser optical path adjustment device, characterized in that, Includes lamp chamber, horizontal fiberglass, vertical fiberglass, high-pressure plate, detection plate, xenon lamp, plasma, optomechanic, and positioning fixtures, among which: The lamp chamber is provided with a hollow cavity; The horizontal fiberglass is disposed in the hollow cavity and is positioned near one side to form a sealed cavity; The vertical fiberglass is disposed in the intermediate chamber and divides the sealed chamber into a first chamber and a second chamber; The high-voltage plate and the detection plate are located in the first chamber; The xenon lamp is fixedly installed on the inner wall of the lamp chamber and perpendicular to the horizontal fiberglass; The plasma is located in the xenon lamp; The optical engine is mounted on the positioning fixture and located in the second chamber, and the light emitted by the optical engine irradiates the plasma; The positioning fixture is detachably connected to the inner wall of the lamp chamber and abuts against the first and second sides of the optical engine to position the optical engine.

2. The laser optical path adjustment device as described in claim 1, characterized in that, The positioning fixture is provided with a connecting hole and an adjusting hole. The connecting hole is a round hole and the adjusting hole is an oblong hole. It also includes a pin, which passes through the connecting hole or the adjusting hole and connects to the inner wall of the lamp chamber.

3. The laser optical path adjustment device as described in claim 2, characterized in that, It also includes a gasket, which is installed between the positioning fixture and the optical engine.

4. The laser optical path adjustment device as described in claim 1, characterized in that, The xenon lamp includes a lamp holder and a lamp tube. The lamp holder is provided with a guide pin, and the inner wall of the lamp chamber is provided with a pin hole. The guide pin and the pin hole are fitted together.

5. The laser optical path adjustment device as described in claim 1, characterized in that, The lamp chamber includes a main body, an upper cover, a lower cover, and a front cover. The horizontal fiberglass is installed on the main body. The upper cover is connected to the top of the main body. The lower cover is connected to the bottom of the main body. The front cover is connected to the front end of the main body. The xenon lamp is installed on the front cover.

6. The laser optical path adjustment device as described in claim 5, characterized in that, The upper cover and the lower cover are respectively provided with a first mounting groove and a second mounting groove, and also include a rubber plate. The rubber plate is installed in both the first mounting groove and the second mounting groove, and the two ends of the vertical fiberglass are respectively locked in the two rubber plates.

7. The laser optical path adjustment device as described in claim 1, characterized in that, The lamp chamber has heat dissipation fins on the side wall where the optical engine is installed, and a cooling fan is installed on the heat dissipation fins.

8. The laser optical path adjustment device according to any one of claims 1-7, characterized in that, The vertical fiberglass is made of ceramic materials and asbestos.

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