High-resolution low-distortion infrared confocal focusing intelligent traffic lens

Abstract

The utility model provides a kind of high-resolution low-distortion infrared confocal focusing intelligent traffic lens, lens module includes front group lens and rear group lens in order from object side to imaging surface;Front group lens includes fourth meniscus lens, cemented lens four;Rear group lens includes cemented lens three, cemented lens two and cemented lens one;From object side to imaging surface, fourth meniscus lens, cemented lens four, aperture, cemented lens three, cemented lens two and cemented lens one are arranged in coaxial order along optical axis direction;Fourth meniscus lens, cemented lens four, cemented lens three, cemented lens two and cemented lens one are all spherical lens, and material is the material with infrared transmissivity greater than or equal to 95% above.The utility model adopts multiple spherical lens combination, and lens is made of material with high infrared transmissivity, can reduce dispersion in optical path, effectively correct aberration, improve resolution, control distortion at very low level, satisfy high-precision imaging demand.

Description

Technical Field

[0001] This utility model relates to the field of optical lens technology, and in particular to a high-resolution, low-distortion infrared confocal fixed-focus intelligent traffic lens. Background Technology

[0002] Infrared imaging technology, unaffected by visible light illumination, has been applied in fields such as intelligent transportation cameras. In the field of intelligent transportation, it is directly related to the accuracy of decision-making in scenarios such as vehicle ranging and traffic violation determination, leading to increasingly stringent requirements for high-precision imaging quality.

[0003] To improve image quality, existing technologies use confocal technology as an important technical approach. Its core principle is to precisely control the matching degree between the optical path focus and the photosensitive surface of the detector through the coordinated work of the optical system and the detector, thereby reducing stray light interference. Theoretically, this can effectively improve image resolution and clarity.

[0004] However, existing infrared confocal lenses have shortcomings in terms of resolution and distortion control. In complex environments such as rain, fog, and dust storms, the image quality is difficult to meet high-precision requirements. In complex environments, due to insufficient resolution, infrared confocal lenses produce blurred target edges and lost texture information in the image; moreover, their distortion control is poor, and geometric distortion is prone to occur at the edge of the field of view. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a high-resolution, low-distortion infrared confocal fixed-focus intelligent traffic lens, which can improve the resolution of the lens and reduce distortion.

[0006] This utility model is implemented as follows: This utility model provides a high-resolution, low-distortion infrared confocal fixed-focus intelligent traffic lens, including a lens barrel and a lens module and an aperture installed inside the lens barrel. The lens module includes a front lens and a rear lens in sequence from the object side to the imaging plane. The front lens group includes a fourth meniscus lens and a cemented lens; The rear lens group includes cemented lens three, cemented lens two, and cemented lens one; From the object side to the imaging plane, the fourth meniscus lens, the fourth cemented lens, the aperture, the third cemented lens, the second cemented lens, and the first cemented lens are arranged coaxially in sequence along the optical axis. The fourth meniscus lens, cemented lens four, cemented lens three, cemented lens two, and cemented lens one are all spherical lenses, and are made of materials with an infrared transmittance of greater than or equal to 95%.

[0007] Furthermore, the fourth meniscus lens, cemented lens four, cemented lens three, cemented lens two, and cemented lens one are made of germanium or zinc selenide.

[0008] Furthermore, from the object side to the imaging plane, the cemented lens is composed of a first meniscus lens, a first biconvex lens, and a first biconcave lens connected in sequence; From the object side to the imaging plane, the cemented lens 2 is composed of a second meniscus lens, a second biconvex lens and a third meniscus lens connected in sequence; From the object side to the imaging plane, the cemented lens three is composed of a third biconcave lens and a third biconvex lens connected in sequence; From the object side to the imaging plane, the cemented lens four is composed of a fourth biconvex lens and a fourth biconcave lens connected in sequence.

[0009] Furthermore, the focal lengths of the fourth meniscus lens, cemented lens four, cemented lens three, cemented lens two, and cemented lens one are 53.65mm, -56.624mm, 102.5mm, 750.30mm, and 88.6mm, respectively.

[0010] Furthermore, the air gap between the fourth meniscus lens and the cemented lens is 0.26 mm; The air gap between the cemented lens four and the cemented lens three is 14.95 mm; The air gap between the cemented lens three and the cemented lens two is 0.5 mm; The air gap between the cemented lens 2 and the cemented lens 1 is 0.5 mm; The air gap between the cemented lens and the imaging surface is 12.31-18.31 mm.

[0011] Furthermore, the lens barrel includes a first main barrel, a second main barrel, an optical adjustment ring, a focusing ring, and an interface; The front and rear lens groups are fixed inside the first main tube, the aperture is rotatably connected to the inside of the first main tube, both the first and second main tubes are provided with through slots, the outer side of the aperture is connected to a first guide pin, the light adjustment ring is rotatably connected to the outer side of the second main tube, and the first guide pin passes through the through slot and is connected to the light adjustment ring. A spiral ring is rotatably connected to the outer side of the second main tube. A spiral groove is formed on the spiral ring. A guide groove extending along the axis of the lens barrel is formed on the outer side of the second main tube. A second guide pin is connected to the outer wall of the first main tube. The second guide pin passes through the guide groove and extends into the spiral groove. The focusing ring is fixedly connected to the spiral ring. The interface is fixedly connected to the side of the second main tube near the imaging surface.

[0012] Furthermore, a sleeve is installed inside the lens barrel, and a first stepped surface is provided inside the sleeve. One end of the cemented lens four abuts against the first stepped surface. A third spacer for fixing the cemented lens four is also provided inside the sleeve. The fourth meniscus lens is installed on the end face of the sleeve. A second pressure ring for fixing the fourth meniscus lens is also connected to the end of the first main barrel. The inner side of the first main cylinder is provided with a second stepped surface. One end of the cemented lens three abuts against the second stepped surface. The inner side of the first main cylinder is also provided with a first spacer and a second spacer. The second spacer is located between the cemented lens three and the cemented lens two, and both ends of the second spacer abut against the cemented lens three and the cemented lens two, respectively. The first spacer is located between the cemented lens two and the cemented lens one, and both ends of the first spacer abut against the cemented lens two and the cemented lens one, respectively. A first pressure ring is installed at the end of the first main cylinder near the interface.

[0013] Furthermore, the aperture includes a moving ring and several blades arranged in a ring array. The inner side of the first main cylinder has several hinge holes that match the blades. One end of each blade is rotatably connected to the corresponding hinge hole. The moving ring has several elongated grooves that match the blades. The other end of each blade is movably connected to the corresponding elongated groove. The inner side of the first main cylinder is also provided with a retaining ring for axially fixing the moving ring.

[0014] Furthermore, a first set screw is spirally connected to the light adjustment ring, one end of which passes through the light adjustment ring and abuts against the second main tube. A second set screw is spirally connected to the focusing ring, one end of which passes through the focusing ring and abuts against the second main tube.

[0015] Furthermore, a fixing ring is connected to the end of the second main tube away from the interface. One end of the fixing ring abuts against the light adjustment ring, and a decorative ring is also connected to the outside of the fixing ring.

[0016] The advantages of this invention are as follows: This invention uses a combination of multiple spherical lenses, and the lenses are made of materials with high infrared transmittance, which can reduce chromatic dispersion in the optical path, effectively correct aberrations, improve resolution, control distortion at an extremely low level, and meet the requirements of high-precision imaging. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of a high-resolution, low-distortion infrared confocal fixed-focus intelligent traffic lens of this utility model. Figure 1 .

[0019] Figure 2This is a schematic diagram of the front and rear lens groups in this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of a high-resolution, low-distortion infrared confocal fixed-focus intelligent traffic lens of this utility model. Figure 2 .

[0021] Figure 4 for Figure 3 The diagram shows the structure after the light adjustment ring and focus ring are hidden.

[0022] Figure 5 for Figure 4 Exploded view of the structure shown.

[0023] Figure 6 This is a schematic diagram of the moving ring structure in this utility model.

[0024] Figure 7 This is a schematic diagram of the structure of the blades arranged in a ring array in this utility model.

[0025] Figure 8 This is a schematic diagram of the structure of a single blade in this utility model.

[0026] Figure 9 This is a schematic diagram of the spiral ring structure in this utility model.

[0027] Figure 10 This is a schematic diagram of the focusing ring structure in this utility model.

[0028] Figure 11 This is a schematic diagram of the optical modulation ring structure in this utility model.

[0029] Explanation of the labels in the diagram: 1. Cemented Lens 1; 101. First Meniscus Lens; 102. First Biconvex Lens; 103. First Biconcave Lens; 2. Cemented Lens 2; 201. Second Meniscus Lens; 202. Second Biconvex Lens; 203. Third Meniscus Lens; 3. Cemented Lens 3; 301. Third Biconcave Lens; 302. Third Biconvex Lens; 4. Cemented Lens 4; 401. Fourth Biconvex Lens; 402. Fourth Biconcave Lens; 5. Fourth Meniscus Lens; 6. First Pressing Ring; 7. Second Pressing Ring; 8. First Spacer; 9. Second Spacer; 10. 11. Third spacer ring; 12. Fixing ring; 13. Decorative ring; 14. Adjustment ring; 15. Second main cylinder; 16. Guide groove; 17. First guide pin; 18. First main cylinder; 19. Moving ring; 20. Sleeve; 21. Snap ring; 22. Focusing ring; 21. Second flange; 22. Spiral ring; 23. Spiral groove; 24. Threaded hole; 25. Interface; 26. Connecting part; 27. First flange; 28. Through groove; 29. ​​Second guide pin; 20. Blade; 20. First set screw; 21. Second set screw. Detailed Implementation

[0030] Please see Figures 1 to 11 This utility model provides a high-resolution, low-distortion infrared confocal fixed-focus intelligent traffic lens, including a lens barrel and a lens module and an aperture installed inside the lens barrel. The lens module includes a front lens and a rear lens in sequence from the object side to the imaging surface 28. The front lens group includes a fourth meniscus lens 5 and a cemented lens 4; The rear lens group includes cemented lens 3, cemented lens 2, and cemented lens 1; From the object side to the imaging plane 28, the fourth meniscus lens 5, the cemented lens 4, the aperture, the cemented lens 3, the cemented lens 2, and the cemented lens 1 are arranged coaxially along the optical axis. The fourth meniscus lens 5, cemented lens four 4, cemented lens three 3, cemented lens two 2 and cemented lens one 1 are all spherical lenses, and the material is a material with an infrared transmittance of greater than or equal to 95%.

[0031] The specific parameters of the front and rear lens groups are shown in Table 1. Table 1

[0032] Specifically, the fourth meniscus lens 5, cemented lens four 4, cemented lens three 3, cemented lens two 2, and cemented lens one 1 are all made of germanium or zinc selenide. The center thickness of the fourth meniscus lens 5 is 5.9 mm.

[0033] Specifically, from the object side to the imaging surface 28, the cemented lens 1 is composed of a first meniscus lens 101, a first biconvex lens 102, and a first biconcave lens 103 connected in sequence; the center thicknesses of the first meniscus lens 101, the first biconvex lens 102, and the first biconcave lens 103 are 6.3mm, 8.88mm, and 4.6mm, respectively.

[0034] From the object side to the imaging plane 28, the cemented lens 2 is composed of a second meniscus lens 201, a second biconvex lens 202 and a third meniscus lens 203 connected in sequence; the center thicknesses of the second meniscus lens 201, the second biconvex lens 202 and the third meniscus lens 203 are 2.1mm, 10.15mm and 1.8mm respectively.

[0035] From the object side to the imaging plane 28, the cemented lens 3 is composed of a third biconcave lens 301 and a third biconvex lens 302 connected in sequence; the center thicknesses of the third biconcave lens 301 and the third biconvex lens 302 are 6.93 mm and 8.22 mm, respectively.

[0036] From the object side to the imaging plane 28, the cemented lens 4 is composed of a fourth biconvex lens 401 and a fourth biconcave lens 402 connected in sequence. The center thicknesses of the fourth biconvex lens 401 and the fourth biconcave lens 402 are 7.82 mm and 2.5 mm, respectively.

[0037] The radius of curvature on one side of the fourth meniscus lens 5 is 35.68 mm, and the radius of curvature on the other side is 164.00 mm. The radius of curvature of the object side of the fourth biconvex lens 401 is 23.15 mm, and the radius of curvature of the other side is 254.00 mm. The radius of curvature of the object side of the fourth biconcave lens 402 is 254.00 mm, and the radius of curvature of the other side is 15.89 mm. The radius of curvature on one side of the third biconcave lens 301 is 45.66 mm, and the radius of curvature on the other side is 25.36 mm. The radius of curvature on one side of the third biconvex lens 302 is 25.36 mm, and the radius of curvature on the other side is 29.75 mm. The second meniscus lens 201 has a radius of curvature of 94.57 mm on one side and 16.49 mm on the other side. The second biconvex lens 202 has a radius of curvature of 16.49 mm on one side and 22.87 mm on the other side. The radius of curvature on one side of the third meniscus lens 203 is 22.87 mm, and the radius of curvature on the other side is 80.91 mm. The radius of curvature of the first meniscus lens 101 on one side is 67.05 mm, and the radius of curvature on the other side is 25.84 mm. The first biconvex lens 102 has a radius of curvature of 25.84 mm on one side and 50.49 mm on the other side. The first biconcave lens 103 has a radius of curvature of 50.49 mm on one side and 35.79 mm on the other side.

[0038] Specifically, the focal lengths of the fourth meniscus lens 5, cemented lens four 4, cemented lens three 3, cemented lens two 2, and cemented lens one 1 are 53.65mm, -56.624mm, 102.5mm, 750.30mm, and 88.6mm, respectively.

[0039] Specifically, the air gap between the fourth meniscus lens 5 and the cemented lens 4 is 0.26 mm; The air gap between the cemented lens 4 and the cemented lens 3 is 14.95 mm; The air gap between the cemented lens 3 and the cemented lens 2 is 0.5 mm; The air gap between the cemented lens 2 and the cemented lens 1 is 0.5 mm; The air gap between the cemented lens 1 and the imaging surface 28 is 12.31-18.31 mm.

[0040] In this invention, the lens has a focal length of 50mm, an aperture of F2.0, a field of view of 30°, distortion controlled within 0.5%, and a resolution of 200 line pairs / mm.

[0041] Specifically, the lens barrel includes a first main barrel 16, a second main barrel 14, an optical adjustment ring 13, a focusing ring 20, and an interface 22; The front and rear lens groups are fixed inside the first main tube 16. The aperture is rotatably connected to the inside of the first main tube 16. Both the first and second main tubes 16 and 14 have through slots 23. The outer side of the aperture is connected to a first guide pin 15. The light adjustment ring 13 is rotatably connected to the outer side of the second main tube 14. The first guide pin 15 passes through the through slot 23 and is connected to the light adjustment ring 13. The inner side of the light adjustment ring 13 has a groove 131, and the upper end of the first guide pin 15 is connected to the groove 131.

[0042] A spiral ring 21 is rotatably connected to the outer side of the second main tube 14. The spiral ring 21 has a spiral groove 211. A guide groove 141 extending along the axis of the lens barrel is provided on the outer side of the second main tube 14. A second guide pin 24 is connected to the outer wall of the first main tube 16. The second guide pin 24 passes through the guide groove 141 and extends into the spiral groove 211. The focusing ring 20 is fixedly connected to the spiral ring 21. The end face of the spiral ring 21 has a threaded hole 212. The focusing ring 20 has a second flange portion 2001. The second flange portion 2001 has a countersunk hole. The second flange portion 2001 abuts against the end face of the spiral ring 21, and a second screw (not shown in the figure) passes through the countersunk hole and is locked in the threaded hole 212. When the focusing ring 20 is rotated, the focusing ring 20 rotates synchronously with the spiral ring 21. Guided by the spiral groove 211 and the guide groove 141, the first main tube 16 slides relative to the second main tube 14 along the optical axis, thereby changing the distance from the first main tube to the imaging surface 28.

[0043] The interface 22 is fixedly connected to the side of the second main tube 14 near the imaging surface 28 by a first screw (not shown). The interface 22 has a connecting part 221 with threads on the outside. The connecting part 221 is used to connect with other optical devices. The interface 22 also has a first flange 222, which abuts against the focusing ring 20 for axially fixing the focusing ring 20.

[0044] Specifically, a sleeve 18 is installed inside the lens barrel, and a first stepped surface is provided inside the sleeve 18. The end of the cemented lens 4 facing the imaging plane abuts against the first stepped surface. A third spacer 10 for fixing the cemented lens 4 is also provided inside the sleeve 18. The third spacer 10 abuts against the end of the cemented lens 4 facing the object side. The fourth meniscus lens 5 is installed on the end face of the sleeve 18. A second pressure ring 7 for fixing the fourth meniscus lens 5 is also connected to the end of the first main barrel 16. The side of the fourth meniscus lens 5 facing the imaging plane abuts against the third spacer 10, and the end of the fourth meniscus lens 5 facing the object side abuts against the second pressure ring 7. The first main tube 16 has a second stepped surface on its inner side. The object-side end of the cemented lens 3 abuts against the second stepped surface. A first spacer 8 and a second spacer 9 are also installed on the inner side of the first main tube 16. The second spacer 9 is located between the cemented lens 3 and the cemented lens 2, with both ends abutting against the cemented lens 3 and the cemented lens 2, respectively. The first spacer 8 is located between the cemented lens 2 and the cemented lens 1, with both ends abutting against the cemented lens 2 and the cemented lens 1, respectively. A first pressure ring 6 is installed at the end of the first main tube 16 near the interface 22. The first pressure ring 6 abuts against the image-facing side of the cemented lens 1.

[0045] Specifically, the aperture includes a moving ring 17 and a plurality of blades 25 arranged in a ring array. The inner side of the first main cylinder 16 has a plurality of hinge holes that match the blades 25. One end of each blade 25 is rotatably connected to the corresponding hinge hole. The moving ring 17 has a plurality of elongated grooves that match the blades 25. The other end of each blade 25 is movably connected to the corresponding elongated groove. A light-passing hole is left in the middle of the plurality of blades 25 arranged in a ring array. The inner side of the first main cylinder 16 is also provided with a retaining ring 19 for axially fixing the moving ring 17. When the light-adjusting ring 13 is rotated, the moving ring 17 is driven to rotate through the first guide pin 15, thereby causing the blade 25 to rotate around the hinge hole, thus changing the diameter of the light-transmitting hole.

[0046] Specifically, a first set screw 26 is screwed onto the aperture adjustment ring 13, with one end of the first set screw 26 passing through the aperture adjustment ring 13 and abutting against the second main barrel 14. A second set screw 27 is screwed onto the focusing ring 20, with one end of the second set screw 27 passing through the focusing ring 20 and abutting against the second main barrel 14. After adjusting the aperture size, tighten the first set screw 26 to prevent rotation of the aperture adjustment ring 13 during use. Similarly, after adjusting the focus, tighten the second set screw 27 to prevent rotation of the focusing ring 20 during use.

[0047] Specifically, a fixing ring 11 is connected to the end of the second main cylinder 14 away from the interface 22. One end of the fixing ring 11 abuts against the light adjustment ring 13, and a decorative ring 12 is also connected to the outside of the fixing ring 11. The fixing ring 11 is fixed to the outer wall of the second main cylinder 14 in a detachable manner.

[0048] The advantages of this invention are as follows: This invention uses a combination of multiple spherical lenses, and the lenses are made of materials with high infrared transmittance, which can reduce chromatic dispersion in the optical path, effectively correct aberrations, improve resolution, control distortion at an extremely low level, and meet the requirements of high-precision imaging.

[0049] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A high-resolution, low-distortion infrared confocal fixed-focus intelligent traffic lens, characterized in that: It includes a lens barrel, a lens module and an aperture installed inside the lens barrel, wherein the lens module includes a front lens and a rear lens in sequence from the object side to the imaging plane; The front lens group includes a fourth meniscus lens and a cemented lens; The rear lens group includes cemented lens three, cemented lens two, and cemented lens one; From the object side to the imaging plane, the fourth meniscus lens, the fourth cemented lens, the aperture, the third cemented lens, the second cemented lens, and the first cemented lens are arranged coaxially in sequence along the optical axis. The fourth meniscus lens, cemented lens four, cemented lens three, cemented lens two, and cemented lens one are all spherical lenses, and are made of materials with an infrared transmittance of greater than or equal to 95%.

2. The high-resolution, low-distortion infrared confocal fixed-focus intelligent traffic lens as described in claim 1, characterized in that: The fourth meniscus lens, cemented lens four, cemented lens three, cemented lens two, and cemented lens one are made of germanium or zinc selenide.

3. The high-resolution, low-distortion infrared confocal fixed-focus intelligent traffic lens as described in claim 1, characterized in that: From the object side to the imaging plane, the cemented lens is composed of a first meniscus lens, a first biconvex lens and a first biconcave lens connected in sequence; From the object side to the imaging plane, the cemented lens 2 is composed of a second meniscus lens, a second biconvex lens and a third meniscus lens connected in sequence; From the object side to the imaging plane, the cemented lens three is composed of a third biconcave lens and a third biconvex lens connected in sequence; From the object side to the imaging plane, the cemented lens four is composed of a fourth biconvex lens and a fourth biconcave lens connected in sequence.

4. The high-resolution, low-distortion infrared confocal fixed-focus intelligent traffic lens as described in claim 1, characterized in that: The focal lengths of the fourth meniscus lens, cemented lens four, cemented lens three, cemented lens two, and cemented lens one are 53.65mm, -56.624mm, 102.5mm, 750.30mm, and 88.6mm, respectively.

5. The high-resolution, low-distortion infrared confocal fixed-focus intelligent traffic lens as described in claim 1, characterized in that: The air gap between the fourth meniscus lens and the cemented lens is 0.26 mm. The air gap between the cemented lens four and the cemented lens three is 14.95 mm; The air gap between the cemented lens three and the cemented lens two is 0.5 mm; The air gap between the cemented lens 2 and the cemented lens 1 is 0.5 mm; The air gap between the cemented lens and the imaging surface is 12.31-18.31 mm.

6. The high-resolution, low-distortion infrared confocal fixed-focus intelligent traffic lens as described in claim 1, characterized in that: The lens barrel includes a first main barrel, a second main barrel, an optical adjustment ring, a focusing ring, and an interface; The front and rear lens groups are fixed inside the first main tube, the aperture is rotatably connected to the inside of the first main tube, both the first and second main tubes are provided with through slots, the outer side of the aperture is connected to a first guide pin, the light adjustment ring is rotatably connected to the outer side of the second main tube, and the first guide pin passes through the through slot and is connected to the light adjustment ring. A spiral ring is rotatably connected to the outer side of the second main tube. A spiral groove is formed on the spiral ring. A guide groove extending along the axis of the lens barrel is formed on the outer side of the second main tube. A second guide pin is connected to the outer wall of the first main tube. The second guide pin passes through the guide groove and extends into the spiral groove. The focusing ring is fixedly connected to the spiral ring. The interface is fixedly connected to the side of the second main tube near the imaging surface.

7. A high-resolution, low-distortion infrared confocal fixed-focus intelligent traffic lens as described in claim 6, characterized in that: The inner side of the lens barrel is fitted with a sleeve, and the inner side of the sleeve is provided with a first stepped surface. One end of the cemented lens four abuts against the first stepped surface. The inner side of the sleeve is also provided with a third spacer for fixing the cemented lens four. The fourth meniscus lens is installed on the end face of the sleeve. The end of the first main barrel is also connected with a second pressure ring for fixing the fourth meniscus lens. The inner side of the first main cylinder is provided with a second stepped surface. One end of the cemented lens three abuts against the second stepped surface. The inner side of the first main cylinder is also provided with a first spacer and a second spacer. The second spacer is located between the cemented lens three and the cemented lens two, and both ends of the second spacer abut against the cemented lens three and the cemented lens two, respectively. The first spacer is located between the cemented lens two and the cemented lens one, and both ends of the first spacer abut against the cemented lens two and the cemented lens one, respectively. A first pressure ring is installed at the end of the first main cylinder near the interface.

8. A high-resolution, low-distortion infrared confocal fixed-focus intelligent traffic lens as described in claim 6, characterized in that: The aperture includes a moving ring and several blades arranged in a ring array. The inner side of the first main cylinder has several hinge holes that match the blades. One end of each blade is rotatably connected to the corresponding hinge hole. The moving ring has several elongated grooves that match the blades. The other end of each blade is movably connected to the corresponding elongated groove. The inner side of the first main cylinder is also provided with a retaining ring for axially fixing the moving ring.

9. A high-resolution, low-distortion infrared confocal fixed-focus intelligent traffic lens as described in claim 6, characterized in that: The light adjustment ring is spirally connected to a first set screw, one end of which passes through the light adjustment ring and abuts against the second main tube. The focusing ring is spirally connected to a second set screw, one end of which passes through the focusing ring and abuts against the second main tube.

10. A high-resolution, low-distortion infrared confocal fixed-focus intelligent traffic lens as described in claim 6, characterized in that: The second main tube has a fixing ring connected to the end away from the interface. One end of the fixing ring abuts against the light adjustment ring, and a decorative ring is also connected to the outside of the fixing ring.

Images