Lens fixing structure of ozone laser radar

Abstract

The utility model discloses a lens fixing structure of an ozone laser radar, which belongs to the technical field of ozone laser radars and comprises a lens mounting seat, an optical lens is attached to the upper surface of the lens mounting seat, a mounting ring is fixedly mounted on the outer surface of the lens mounting seat, and a plurality of mounting bolts are mounted on the mounting ring in a threaded manner. A matching transition piece is arranged on the lower surface of the optical lens, and a transition piece accommodating groove is formed in the upper surface of the lens mounting seat; the matching transition piece is arranged to be matched with the dispensing surface layer, the optical lens and the lens mounting seat for use, epoxy resin glue is adopted as the dispensing surface layer to connect the lens mounting seat and the optical lens, a transfer fixing effect is achieved, and the matching transition piece adopts a material with a matched thermal expansion coefficient for transition. And the bonding length of the contact surfaces with large thermal expansion coefficient difference is reduced, and the length variation difference of adjacent materials caused by thermal expansion and cold contraction is reduced, so that high-strength optical lens fixation is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of ozone laser radar, and in particular relates to a lens fixing structure of an ozone laser radar. Background Art

[0002] Ozone lidar is a device that monitors the distribution profile of ozone concentration in the atmosphere and provides important observation data for improving environmental air quality.

[0003] Due to the special nature of the optical lenses in ozone lidar, to prevent them from loosening and shifting during long-term operation, they are usually fixed with a pressure ring or silicone adhesive.

[0004] The pressing ring fixation uses a fine-tooth pressing ring that is slightly smaller than the outer diameter of the lens to press the lens tightly. This fixing method is suitable for fixing smaller lenses. When fixing larger lenses or the lenses need to withstand large temperature differences, a sealing ring and a pressing ring are used in combination. The elastic deformation of the sealing ring is used to offset the stress caused by changes in ambient temperature and the pressing process of the pressing ring, thereby avoiding lens breakage.

[0005] Silicone, a weather-resistant adhesive, is resistant to moisture and high and low temperatures. In applications where a pressure ring isn't suitable for fixation, silicone can be used to bond the lens's mounting surface to the structural component. After curing, silicone exhibits a degree of elasticity, which can mitigate lens deformation from changes in ambient temperature and material stress. However, in applications where precise lens positioning is required, this elastic deformation can cause optical path deflection, significantly degrading the device's signal quality or even rendering it unusable.

[0006] Epoxy resin glue is an excellent adhesive with high strength and strong weather resistance after curing. It is widely used in optical communication devices. When it is used in ozone lidar equipment, since the lens size is usually larger than 20 mm, or even several hundred mm, after the lens fixing parts and the lens are fixed with epoxy resin glue, due to the difference in thermal expansion coefficients between the epoxy resin glue, the lens, and the lens fixing parts, the lens often breaks when the ambient temperature difference changes greatly enough. Utility Model Content

[0007] The purpose of the present utility model is to provide a lens fixing structure for an ozone laser radar to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lens fixing structure for an ozone laser radar, comprising a lens mounting seat, the upper surface of the lens mounting seat is fitted with an optical lens, the outer surface of the lens mounting seat is fixedly mounted with a mounting ring, a plurality of mounting bolts are threadedly mounted on the mounting ring, the lower surface of the optical lens is provided with a matching transition piece, the upper surface of the lens mounting seat is provided with a transition piece receiving groove, the upper surface and outer surface of the matching transition piece are both provided with a dotted glue surface layer and the dotted glue surface layer is connected to the lower surface of the optical lens and the inner wall of the transition piece receiving groove The lens mounting seat is pasted to each other, and a blocking groove is provided at a position opposite to the transition piece receiving groove on the lower surface of the lens mounting seat, and a blocking plate is provided in the blocking groove, a rotating shaft is rotatably mounted on the blocking plate, a knob is fixedly mounted on the bottom end of the rotating shaft, a disc is fixedly mounted on the outer surface of the rotating shaft, two rotating arms are hingedly mounted on the disc, and the rotating arms and the disc are eccentrically arranged, a mounting plate is hingedly mounted on the end of the rotating arm away from the disc, a locking plate is fixedly mounted on the side of the mounting plate, the locking plate slides through the blocking plate and is used in conjunction with the locking groove provided on the inner wall of the blocking groove.

[0009] By adopting the above scheme, a matching transition piece is set to cooperate with the glue surface layer for use with the optical lens and the lens mount, and epoxy resin glue is used as the glue surface layer to connect the lens mount and the optical lens to achieve a transit fixation effect. The matching transition piece uses materials with matching thermal expansion coefficients for transition, reducing the bonding length of the contact surface with large differences in thermal expansion coefficients, and reducing the difference in length changes of adjacent materials caused by thermal expansion and contraction, thereby achieving high-strength optical lens fixation. By setting a sealing plate, the sealing plate is used to seal the matching transition piece. The sealing plate can be conveniently disassembled and assembled with the lens mount through the movement of the locking plate, making it convenient to remove the sealing plate during subsequent disassembly, and the operating structure is simple.

[0010] As a preferred embodiment, a plurality of alignment blocks are fixed on the lower surface of the optical lens, a semicircular clamping ball is fixedly installed on the side of the alignment block, an alignment slot for inserting the alignment block is provided on the upper surface of the lens mounting seat, and a semicircular clamping groove for inserting the semicircular clamping ball is provided on the inner wall of the alignment slot.

[0011] By adopting the above solution, the alignment plug is inserted into the alignment slot, and the semicircular snap ball is snapped into the semicircular snap slot, which can realize the alignment assembly limit of the optical lens, play an effective limiting effect, and ensure a good alignment assembly effect.

[0012] As a preferred embodiment, an alignment guide bar is fixedly mounted on the upper surface of the blocking plate, and an alignment guide groove for inserting the alignment guide bar is opened on the inner wall of the blocking accommodating groove.

[0013] By adopting the above solution, the alignment guide bar is used in conjunction with the alignment guide groove, which can facilitate the assembly operation of the blocking plate. When the alignment guide bar is aligned with the alignment guide groove, the positioning plate is aligned with the positioning groove.

[0014] As a preferred embodiment, a fixed guide rod is fixedly installed on the inner wall of the blocking plate, a fixed guide block is fixedly installed on the outer surface of the fixed guide rod, a limiting disk is fixedly installed on one end of the fixed guide rod, a spring is fixedly installed between the limiting disk and the fixed guide block, and the fixed guide block is fixed to the side of the mounting plate.

[0015] By adopting the above solution, the fixed guide rod is used in conjunction with the fixed guide block to support and guide the movement of the mounting plate, thereby improving the smoothness of the movement and preventing shaking. When the locking plate is out of the locking slot, the spring will deform, so the elasticity of the spring can be used to drive the locking plate to quickly reset and lock it into the locking slot, thereby improving the convenience of the clamping operation.

[0016] As a preferred embodiment, the thermal expansion coefficient of the matching transition piece matches the thermal expansion coefficient of the optical lens.

[0017] By adopting the above solution, using matching transition pieces with the same or matching thermal expansion coefficients in combination with optical lenses, the problem of material tearing caused by a large difference in thermal expansion coefficients can be effectively avoided.

[0018] As a preferred embodiment, the glue spotting method between the glue spotting surface layer on the outer surface of the matching transition piece and the inner wall of the transition piece receiving groove is intermittent glue spotting.

[0019] By adopting the above scheme and the intermittent glue dispensing method, when the ambient temperature changes, the deformation of the matching transition piece and the lens mount is small enough, and due to the discontinuity of the glue dispensing surface, the accumulated stress is limited and does not reach the level of material tearing. Therefore, it is possible to maintain sufficient bonding strength of the optical lens while avoiding tearing of the optical lens.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The lens fixing structure of the ozone laser radar is used by setting a matching transition piece with a spot glue surface layer for use with the optical lens and the lens mounting seat. Epoxy resin glue is used as the spot glue surface layer to connect the lens mounting seat and the optical lens to achieve a transit fixation effect. The matching transition piece uses a material with a matching thermal expansion coefficient for transition, which reduces the bonding length of the contact surface with a large difference in thermal expansion coefficient and reduces the difference in length change of adjacent materials caused by thermal expansion and contraction, thereby achieving high-strength optical lens fixation.

[0022] The lens fixing structure of the ozone laser radar is provided with a blocking plate, which is used to block the matching transition piece. The blocking plate can be conveniently disassembled and assembled with the lens mounting seat through the movement of the positioning plate, making it convenient to remove the blocking plate during subsequent disassembly, and the operating structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 This is a schematic structural diagram of the utility model from another angle;

[0025] Figure 3 It is a schematic structural diagram of the cross section of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the optical lens of the utility model;

[0027] Figure 5 This is a structural diagram of the lens mounting seat of the utility model;

[0028] Figure 6 This is a structural diagram of the lens mounting seat of the utility model from another angle;

[0029] Figure 7 This is a structural schematic diagram of the cross section of the sealing plate of the present invention.

[0030] In the figure: 1. Lens mounting seat; 2. Optical lens; 3. Mounting ring; 4. Mounting bolt; 5. Matching transition piece; 6. Glue dispensing surface layer; 7. Transition piece receiving groove; 8. Blocking receiving groove; 9. Blocking plate; 10. Rotating shaft; 11. Knob; 12. Disc; 13. Mounting plate; 14. Positioning plate; 15. Rotating arm; 16. Positioning groove; 17. Alignment plug-in block; 18. Semicircular snap ball; 19. Alignment slot; 20. Semicircular snap groove; 21. Alignment guide strip; 22. Alignment guide groove; 23. Fixed guide block; 24. Fixed guide rod; 25. Limiting disk; 26. Spring. DETAILED DESCRIPTION

[0031] See also Figure 1-7The utility model provides a lens fixing structure of an ozone laser radar, including a lens mounting seat 1, an optical lens 2 is laminated on the upper surface of the lens mounting seat 1, a mounting ring 3 is fixedly mounted on the outer surface of the lens mounting seat 1, a plurality of mounting bolts 4 are threadedly mounted on the mounting ring 3, a matching transition piece 5 is provided on the lower surface of the optical lens 2, a transition piece receiving groove 7 is provided on the upper surface of the lens mounting seat 1, and a dotted adhesive surface layer 6 is provided on the upper surface and outer surface of the matching transition piece 5 and is adhered to the lower surface of the optical lens 2 and the inner wall of the transition piece receiving groove 7 through the dotted adhesive surface layer 6, and the lower surface of the lens mounting seat 1 is directly opposite to the transition piece 5. A blocking accommodating groove 8 is provided at the position of the component accommodating groove 7, and a blocking plate 9 is provided in the blocking accommodating groove 8. A rotating shaft 10 is rotatably installed on the blocking plate 9, and a knob 11 is fixedly installed on the bottom end of the rotating shaft 10. A disc 12 is fixedly installed on the outer surface of the rotating shaft 10. Two rotating arms 15 are hingedly installed on the disc 12, and the rotating arms 15 are eccentrically arranged with the disc 12. A mounting plate 13 is hingedly installed on the end of the rotating arm 15 away from the disc 12, and a locking plate 14 is fixedly installed on the side of the mounting plate 13. The locking plate 14 slides through the blocking plate 9 and is used in conjunction with the locking groove 16 provided on the inner wall of the blocking accommodating groove 8.

[0032] By setting a matching transition piece 5 to be used with a glue-dispensing surface layer 6 and the optical lens 2 and the lens mounting seat 1, epoxy resin glue is used as the glue-dispensing surface layer 6 to connect the lens mounting seat 1 and the optical lens 2, so as to achieve a transit fixation effect. The matching transition piece 5 uses a material with matching thermal expansion coefficient to transition, thereby reducing the bonding length of the contact surface with a large difference in thermal expansion coefficient, and reducing the difference in length change of adjacent materials caused by thermal expansion and contraction, thereby achieving high-strength fixation of the optical lens 2. By setting a sealing plate 9, the sealing plate 9 is used to seal the matching transition piece 5. The sealing plate 9 can be conveniently disassembled and assembled with the lens mounting seat 1 through the movement of the locking plate 14, so that the sealing plate 9 can be removed conveniently during subsequent disassembly, and the operating structure is simple.

[0033] Several alignment blocks 17 are fixed on the lower surface of the optical lens 2, and semicircular snap balls 18 are fixed on the side of the alignment blocks 17. An alignment slot 19 is provided on the upper surface of the lens mounting seat 1 for inserting the alignment blocks 17, and a semicircular snap groove 20 is provided on the inner wall of the alignment slot 19 for inserting the semicircular snap balls 18. By inserting the alignment blocks 17 into the alignment slots 19 and snapping the semicircular snap balls 18 into the semicircular snap grooves 20, the alignment assembly limit of the optical lens 2 can be realized, which has an effective limiting effect and ensures a good alignment assembly effect.

[0034] An alignment guide bar 21 is fixedly installed on the upper surface of the blocking plate 9, and an alignment guide groove 22 is provided on the inner wall of the blocking accommodating groove 8 for inserting the alignment guide bar 21. The alignment guide bar 21 is used in conjunction with the alignment guide groove 22 to facilitate the assembly operation of the blocking plate 9. When the alignment guide bar 21 is aligned with the alignment guide groove 22, the positioning plate 14 is aligned with the positioning groove 16.

[0035] A fixed guide rod 24 is fixedly installed on the inner wall of the blocking plate 9, and a fixed guide block 23 is fixedly installed on the outer surface of the fixed guide rod 24. A limit plate 25 is fixedly installed on one end of the fixed guide rod 24, and a spring 26 is fixedly installed between the limit plate 25 and the fixed guide block 23. The fixed guide block 23 is fixed to the side of the mounting plate 13. The fixed guide rod 24 is used in conjunction with the fixed guide block 23 to support and guide the movement of the mounting plate 13, improve the smoothness of the movement, and prevent shaking. When the locking plate 14 disengages from the locking groove 16, the spring 26 will deform. Therefore, the elasticity of the spring 26 can be used to drive the locking plate 14 to quickly reset and lock it into the locking groove 16, thereby improving the convenience of the clamping operation.

[0036] The thermal expansion coefficient of the matching transition piece 5 matches that of the optical lens 2. By using the matching transition piece 5 with the same or matching thermal expansion coefficient in conjunction with the optical lens 2, the problem of material tearing caused by a large difference in thermal expansion coefficients can be effectively avoided.

[0037] The gluing method between the gluing surface layer 6 on the outer surface of the matching transition piece 5 and the inner wall of the transition piece receiving groove 7 specifically adopts intermittent gluing. By adopting the intermittent gluing method, when the ambient temperature changes, the deformation of the matching transition piece 5 and the lens mounting seat 1 is small enough, and due to the discontinuity of the gluing surface, the accumulated stress is limited and does not reach the level of material tearing. Therefore, it is possible to maintain sufficient bonding strength of the optical lens 2 while avoiding tearing of the optical lens 2.

[0038] During use, when assembling the optical lens 2 and the lens mounting seat 1, first use the glue surface layer 6 to install the matching transition piece 5 in the transition piece mounting groove on the lens mounting seat 1, and then use the glue surface layer 6 to connect the glue surface layer 6 with the optical lens 2. At this time, the alignment block 17 is inserted into the alignment slot 19 and the semicircular locking ball 18 is locked into the semicircular locking groove 20. When disassembly is required later, turn the knob 11 to drive the rotating shaft 10 to drive the disc 12 to rotate, and then drive the rotating arm 15 to drive the mounting plate 13 to move, thereby driving the locking plate 14 to move so that the locking plate 14 is out of the locking groove 16. At this time, the sealing plate 9 is unlocked and can be removed. At this time, the lower part of the matching transition piece 5 is exposed, and the glue surface layer 6 on the outer surface of the matching transition piece 5 can be separated from the lens mounting seat 1 by a stripping knife to achieve disassembly.

Claims

1. A lens fixing structure for an ozone laser radar, characterized by: The invention comprises a lens mounting seat (1), wherein the upper surface of the lens mounting seat (1) is fitted with an optical lens (2), the outer surface of the lens mounting seat (1) is fixedly fitted with a mounting ring (3), a plurality of mounting bolts (4) are threadedly mounted on the mounting ring (3), a matching transition piece (5) is provided on the lower surface of the optical lens (2), a transition piece receiving groove (7) is provided on the upper surface of the lens mounting seat (1), the upper surface and the outer surface of the matching transition piece (5) are both provided with a glued surface layer (6) and are adhered to the lower surface of the optical lens (2) and the inner wall of the transition piece receiving groove (7) through the glued surface layer (6), and a blocking receiving groove is provided at a position of the lower surface of the lens mounting seat (1) facing the transition piece receiving groove (7) A slot (8) is provided, and a blocking plate (9) is provided in the blocking accommodating slot (8), a rotating shaft (10) is rotatably mounted on the blocking plate (9), a knob (11) is fixedly mounted on the bottom end of the rotating shaft (10), a disc (12) is fixedly mounted on the outer surface of the rotating shaft (10), two rotating arms (15) are hingedly mounted on the disc (12), and the rotating arms (15) and the disc (12) are eccentrically arranged, a mounting plate (13) is hingedly mounted on one end of the rotating arm (15) away from the disc (12), a locking plate (14) is fixedly mounted on the side of the mounting plate (13), the locking plate (14) slides through the blocking plate (9) and is used in conjunction with a locking groove (16) provided on the inner wall of the blocking accommodating slot (8).

2. The lens fixing structure of the ozone laser radar according to claim 1, characterized in that: A plurality of alignment plugs (17) are fixed on the lower surface of the optical lens (2), and a semicircular clamping ball (18) is fixedly installed on the side of the alignment plug (17). The upper surface of the lens mounting seat (1) is provided with an alignment slot (19) for inserting the alignment plug (17), and the inner wall of the alignment slot (19) is provided with a semicircular clamping groove (20) for the semicircular clamping ball (18) to be clamped into.

3. The lens fixing structure of the ozone laser radar according to claim 1, characterized in that: An alignment guide bar (21) is fixedly mounted on the upper surface of the blocking plate (9), and an alignment guide groove (22) for inserting the alignment guide bar (21) is provided on the inner wall of the blocking accommodating groove (8).

4. The lens fixing structure of the ozone laser radar according to claim 1, characterized in that: A fixed guide rod (24) is fixedly mounted on the inner wall of the blocking plate (9), a fixed guide block (23) is fixedly mounted on the outer surface of the fixed guide rod (24), a limit plate (25) is fixedly mounted on one end of the fixed guide rod (24), a spring (26) is fixedly mounted between the limit plate (25) and the fixed guide block (23), and the fixed guide block (23) is fixed to the side of the mounting plate (13).

5. The lens fixing structure of the ozone laser radar according to claim 1, characterized in that: The thermal expansion coefficient of the matching transition piece (5) matches the thermal expansion coefficient of the optical lens (2).

6. The lens fixing structure of the ozone laser radar according to claim 1, characterized in that: The glue spotting method between the glue spotting surface layer (6) on the outer surface of the matching transition piece (5) and the inner wall of the transition piece receiving groove (7) specifically adopts intermittent glue spotting.

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