A new road monitoring lens and assembly process

Abstract

The present invention discloses a novel road monitoring lens and assembly process, the lens comprising a main barrel, a lens group arranged in the main barrel, the main barrel comprising a head, a front portion and a rear portion from front to back, and the maximum outer diameters of the head, the front portion and the rear portion decrease in sequence, the first lens at the front end of the lens group is mounted on the inner side of the front portion, the peripheral matching sleeve of the front portion is provided with a front adjustment member, the peripheral matching sleeve of the rear portion is provided with a rear adjustment member, the front end of the rear adjustment member is provided with a P-IRIS aperture and a reduction gearbox cooperating with the front adjustment member and the rear adjustment member. The novel road monitoring lens and assembly process of the present invention, by mounting all lenses on the main barrel and mounting the P-IRIS aperture and the reduction gearbox on the rear adjustment member, effectively improves the coaxiality and parallelism of all lenses, ensures the imaging quality of the lens, and solves the assembly problem of the lens. In addition, the overall structure of the lens is more simple and compact, and the overall appearance of the lens is more beautiful.

Description

Technical Field

[0001] The present invention relates to the technical field of optical lenses, and in particular to a novel road monitoring lens and an assembly process. Background Art

[0002] like Figure 1 The figure shows a conventional road monitoring lens. It comprises a main barrel, with a P-IRIS iris (precision iris) and a reduction gearbox located on its central outer periphery. Front and rear adjustment members, which mate with the reduction gearbox, are mounted on the outer periphery of the main barrel, corresponding to the front and rear ends. The end closest to the object side is the front end, and the end closest to the image side is the rear end. A key feature of this lens is that the outer diameter of the first lens at the front end—the first lens—is significantly larger than that of the other lenses. To facilitate assembly, the first lens is mounted in a separate frame, the first frame, which is threaded into the front end of the main barrel. The other lenses are mounted within the main barrel. During assembly, the front adjustment member must first be inserted from the front end of the main barrel (this is only possible from the front end, as the central portion of the main barrel houses the reduction gearbox and P-IRIS iris, preventing insertion from the rear end). After the front adjustment member is installed, the first frame and first lens are then installed.

[0003] However, the above-mentioned lens has the following problems: the first lens is secured by the first frame through a threaded fit between the main barrel and the first frame. However, there is a gap in the threaded fit, making the first frame prone to tilting when mounted on the main barrel. Furthermore, the large outer diameter of the first lens also increases the size of the first frame, further increasing the risk of tilting when mated with the main barrel. If the first lens tilts, it will seriously affect the image quality of the lens, and the quality of the lens cannot be guaranteed. Furthermore, the gap between the first frame and the main barrel and the front adjustment member is large, making the lens aesthetically pleasing. Furthermore, when assembling the first frame and the first lens, the first frame (with the first lens already installed) must first be installed to the front end of the main barrel. If it meets the requirements, the first frame is then removed and glue is applied to the corresponding position of the main barrel. After the glue is applied, the first frame is installed to complete the final installation. During this process, the first frame needs to be installed multiple times, which poses the risk of dust on the first lens and poor image quality.

[0004] So, how can the tilted first lens of the lens be resolved? The inventors have devised a method to install the first lens on the main barrel, which effectively improves the coaxiality and parallelism of all lenses. However, if the first lens is installed inside the main barrel, the outer diameter of the front end of the main barrel will be significantly increased (to accommodate the first lens) and will be larger than the inner diameter of the front adjustment member. This will prevent the front adjustment member from being installed from the front end of the main barrel, and installation of the front adjustment member will become a new problem. Furthermore, if the inner diameter of the front adjustment member is increased so that it can be inserted from the front end of the main barrel, the outer diameter of the main barrel corresponding to the front adjustment member will also be increased to match the front adjustment member (corresponding to an increase in the wall thickness of the front end of the main barrel). This will significantly increase the size and weight of the lens, and the cost will also increase significantly, which clearly does not meet actual production requirements.

[0005] In summary, solving the problem of the tilt of the first lens (first lens) of the above-mentioned road monitoring lens has become an urgent problem that needs to be solved for this lens.

[0006] In view of this, the inventors of the present application have invented a new road monitoring lens and assembly process. Summary of the Invention

[0007] The object of the present invention is to provide a novel road monitoring lens and assembly process that can effectively improve the coaxiality and parallelism of the lens while solving assembly problems.

[0008] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a new type of road monitoring lens and assembly process, comprising a main barrel and a lens group arranged in the main barrel, wherein the main barrel comprises a head, a front part and a rear part from front to back, and the maximum outer diameters of the head, the front part and the rear part decrease in sequence, the first lens at the front end of the lens group is installed on the inner side of the front part, the peripheral matching sleeve of the front part is provided with a front adjustment part, and the peripheral matching sleeve of the rear part is provided with a rear adjustment part, and the front end of the rear adjustment part is provided with a P-IRIS aperture and a reduction gear box cooperating with the front adjustment part and the rear adjustment part.

[0009] Furthermore, the rear adjustment part includes an outer tube that is matched with the outer periphery of the rear part and a rear adjustment ring that is matched with the outer periphery of the outer tube. The P-IRIS aperture and reduction gear are installed at the front end of the outer tube. The front end of the rear adjustment ring is provided with rear adjustment teeth that cooperate with the reduction gear along its circumferential direction.

[0010] Furthermore, an annular table is provided at the front end of the outer cylinder extending radially outward, the front side of the annular table matches and abuts against the rear end of the front part, and the annular table is provided with a connecting hole connected and fixed to the main cylinder and a first mounting hole for mounting the reduction gearbox.

[0011] Furthermore, at least one arc-shaped block is provided at the front end of the annular table, extending forward, and the arc-shaped block is matched and engaged with the front periphery and abuts against the rear end of the front adjustment member, and one end of one of the arc-shaped blocks is provided with a second mounting hole for mounting the P-IRIS aperture.

[0012] Furthermore, there are two arc-shaped blocks, and the two arc-shaped blocks are respectively located on both sides of the front end of the annular table.

[0013] Furthermore, the outer periphery of the outer cylinder is provided with positioning ridges along its circumferential direction, and the front end of the rear adjustment ring matches and abuts against the positioning ridges.

[0014] Furthermore, the side surface of the outer tube is provided with at least one spiral rear guide hole, the inner wall of the rear adjustment ring is provided with a rear limit groove arranged in a one-to-one correspondence with the rear guide hole, and the rear limit grooves are all parallel to the axial direction of the main tube, the rear part is provided with a spiral give way hole arranged in a one-to-one correspondence with the rear guide hole, the inner side of the rear part is provided with a rear mirror frame and a rear guide nail arranged in a one-to-one correspondence with the rear guide hole, one end of the rear guide nail is fixedly connected to the rear mirror frame, and the other end passes through the give way hole and the rear guide hole in sequence and is embedded in the rear limit groove.

[0015] Furthermore, the front adjustment part includes a sleeve that is matched and sleeved on the outer periphery of the front part, and a front adjustment ring that is matched and sleeved on the outer periphery of the sleeve. The rear end of the front adjustment ring is provided with front adjustment teeth that cooperate with the reduction gear box along its circumferential direction. The side of the sleeve is provided with at least one spiral front guide hole. The front part is provided with front limiting holes that are arranged one-to-one corresponding to the front guide holes, and the front limiting holes are all parallel to the axial direction of the main tube. The inner side of the front part is provided with a front frame and front guide pins that are arranged one-to-one corresponding to the front guide holes. One end of the front guide pin is fixed to the front frame, and the other end passes through the front limiting hole and is embedded in the front guide hole.

[0016] Furthermore, the front end of the front adjusting member matches and abuts against the rear end of the front portion, and the outer diameter of the front adjusting member is equal to the outer diameter of the front portion.

[0017] An assembly process for the novel road monitoring lens is provided. The lens assembly comprises, from front to back, a first component, a second component, a third component, and a fourth component. A front lens frame is provided on the inner front side of the main barrel, and the second component is mounted in the front lens frame. A rear lens frame is provided on the inner rear side of the main barrel, and the fourth component is mounted in the rear lens frame. The assembly process comprises the following steps:

[0018] S1: Install the second, third, and fourth lens elements into the front frame, main barrel, and rear frame in sequence, and then install the front frame with the lens into the main barrel from the front end of the main barrel;

[0019] S2: Install the front adjustment piece, and install the sleeve and the front adjustment ring from the rear end of the main cylinder to the front of the main cylinder in sequence;

[0020] S3: Install the rear end of the main tube of the rear frame into the inner side of the rear part, and install the rear end of the outer tube of the main tube into the rear of the main tube;

[0021] S4: Install the reduction gearbox to the front end of the outer cylinder, and install the rear adjustment ring from the rear end of the main cylinder to the outer cylinder;

[0022] S5: Install the P-IRIS aperture to the front end of the outer barrel;

[0023] S6: Install the lens of the first component from the front end of the main barrel to the inside of the main barrel to complete the lens assembly.

[0024] After adopting the above technical solution, the present invention has the following advantages compared with the prior art:

[0025] The present invention discloses a novel road monitoring lens and assembly process. By mounting all lenses on a main barrel and installing a P-IRIS aperture and a reduction gearbox on a rear adjustment member, the coaxiality and parallelism of all lenses are effectively improved, ensuring the imaging quality of the lenses while solving the lens assembly problem. In addition, the overall structure of the lens is simpler and more compact, and the overall appearance of the lens is more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of existing road surveillance cameras;

[0027] Figure 2 This is a stereoscopic image of a road monitoring camera according to an embodiment of the present invention;

[0028] Figure 3 This is a stereoscopic image from another perspective of the road monitoring camera according to an embodiment of the present invention;

[0029] Figure 4 This is an exploded view of a road monitoring camera according to an embodiment of the present invention;

[0030] Figure 5 This is a cross-sectional view of a road monitoring lens according to an embodiment of the present invention, with the reduction gearbox and P-IRIS aperture omitted.

[0031] Figure 6 This is a schematic diagram of the main cylinder of an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the cooperation between the front frame and the front adjustment member according to an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the outer cylinder of an embodiment of the present invention;

[0034] Figure 9This is a schematic diagram of the outer cylinder from another perspective of an embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of the cooperation between the rear mirror frame and the rear adjustment member according to an embodiment of the present invention;

[0036] Figure 11 This is a schematic diagram of the cooperation between the rear mirror frame and the rear adjustment member from another perspective according to an embodiment of the present invention.

[0037] Description of reference numerals:

[0038] 10′-main barrel, 16′-P-IRIS aperture, 17′-reduction gearbox, 14′-front adjustment piece, 15′-rear adjustment piece, A-first lens, B-first frame,

[0039] 10- Main barrel,

[0040] 11-head,

[0041] 12-front, 121-front limit hole, 122-front slide,

[0042] 13- rear, 131- clearance hole,

[0043] 14-Front adjustment piece,

[0044] 141-sleeve, 1411-front guide hole,

[0045] 142-front adjustment ring, 1421-front adjustment tooth,

[0046] 143-Front connecting nail,

[0047] 15- rear adjustment piece,

[0048] 151-outer cylinder, 1511-rear guide hole, 1512-annular table, 1513-connecting hole, 1514-first mounting hole, 1515-arc-shaped block, 1516-second mounting hole, 1517-positioning ridge,

[0049] 152-rear adjusting ring, 1521-rear adjusting tooth, 1522-rear limiting groove, 1523-rear sliding hole,

[0050] 153-rear connecting nail,

[0051] 16-P-IRIS aperture,

[0052] 17-reduction gearbox,

[0053] 18-front mirror frame, 181-front guide pin,

[0054] 19-rear mirror frame, 191-rear guide nail,

[0055] 20-lens group,

[0056] 21-first group element, 22-second group element, 23-third group element, 24-fourth group element. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0058] It should be noted that in the present invention, the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are all based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element of the present invention must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0059] Example

[0060] Cooperate Figures 1 to 11 As shown, the present invention discloses a new road monitoring lens and assembly process, which can effectively solve the problem of the tilt of the first lens of the existing corresponding road monitoring lens, effectively ensure the coaxiality and parallelism of all lenses, and improve the quality of the lens.

[0061] Cooperate Figures 2 to 6 As shown, a novel road monitoring lens comprises a main barrel 10 and a lens assembly 20 disposed within the main barrel 10. The main barrel 10 comprises, from front to back, a head 11, a front portion 12, and a rear portion 13. The maximum outer diameters of the head 11, front portion 12, and rear portion 13 decrease in order. The end of the lens closest to the object side is the front end, and the end closest to the image side is the rear end. The first lens at the front end of the lens assembly 20 is mounted on the inner side of the front portion 12. A front adjustment member 14 is provided on the outer periphery of the front portion 12, and a rear adjustment member 15 is provided on the outer periphery of the rear portion 13. A P-IRIS aperture 16 and a reduction gear 17 are mounted on the front end of the rear adjustment member 15, which cooperates with the front and rear adjustment members 14 and 15.

[0062] The lens groups 20 are all installed in the main barrel 10, which can effectively ensure the coaxiality and parallelism of all lenses and the imaging quality of the lens; the P-IRIS aperture 16 and the reduction box 17 are installed on the rear adjustment member 15, and the front adjustment member 14 can be put from the rear end of the main barrel 10 to the front part 12 of the main barrel 10, which effectively solves the assembly problem of the lens. At the same time, the front end of the front adjustment member 14 can also be easily installed close and in place, and the overall appearance of the lens is more beautiful.

[0063] In this embodiment, the lens assembly 20 includes, from front to back, a first component 21, a second component 22, a third component 23, and a fourth component 24. Each component includes at least one lens. A front lens frame 18 is provided on the inner side of the front portion 12 of the main barrel 10, and the second component 22 is installed in the front lens frame 18. A rear lens frame 19 is provided on the inner side of the rear portion 13 of the main barrel 10, and the fourth component 24 is installed in the rear lens frame 19. The first component 21 and the third component 23 are installed on the inner wall of the main barrel 10. The first lens at the front end of the lens assembly 20 is installed on the inner side of the front portion 12, that is, the first lens at the front end of the first component 21 is installed on the inner side of the front portion 12. In this lens, the outer diameter of the first lens is much larger than the outer diameters of the other lenses. A plurality of glue holes are provided on the side wall of the front portion 12 corresponding to the position where the first lens is installed, for glueing and fixing the first lens. The reduction gear box 17 cooperates with the front adjusting member 14 to drive the second component 22 to move forward and backward along the axial direction of the main tube 10, and the reduction gear box 17 cooperates with the rear adjusting member 15 to drive the fourth component 24 to move forward and backward along the axial direction of the main tube 10. The forward and backward movement of the second component 22 and the fourth component 24 realizes the focusing of the lens.

[0064] Cooperate Figures 2 to 7 As shown, the front adjustment member 14 includes a sleeve 141 that is matched and sleeved on the outer periphery of the front part 12, and a front adjustment ring 142 that is matched and sleeved on the outer periphery of the sleeve 141. The rear end of the front adjustment ring 142 is provided with front adjustment teeth 1421 that cooperate with the reduction box 17 along its circumferential direction. The reduction box 17 has a gear set that cooperates with the front adjustment teeth 1421. The front adjustment ring 142 can be driven to rotate through the corresponding adjustment knob on the reduction box 17, thereby driving the front mirror frame 18 to move forward and backward.

[0065] The sleeve 141 has at least one spiral front guide hole 1411 defined on its side. The front portion 12 has front stop holes 121 corresponding one-to-one with the front guide holes 1411, and the front stop holes 121 are parallel to the axial direction of the main tube 10. A front lens frame 18 and front guide pins 181 corresponding one-to-one with the front guide holes 1411 are defined on the inside of the front portion 12. One end of each front guide pin 181 is fixedly connected to the front lens frame 18, and the other end passes through the front stop holes 121 and is movably engaged within the front guide holes 1411. There are three front guide holes 1411, which are evenly spaced along the circumference of the sleeve 141. When the front adjustment ring 142 rotates, the front guide pins 181 cooperate with the front guide holes 1411 and the front stop holes 121 to move within the front guide holes 1411 and the front stop holes 121, thereby driving the front lens frame 18 to move forward and backward relative to the main tube 10.

[0066] The sleeve 141 is connected and fixed to the side wall of the front adjusting ring 142 by a front connecting pin 143. The outer wall of the main cylinder 10 is provided with a front sliding groove 122 corresponding to the front connecting pin 143. The front sliding groove 122 is arranged along the circumferential direction of the main cylinder 10. The end of the front connecting pin 143 is movably arranged in the front sliding groove 122. When the front adjusting ring 142 rotates, the sleeve 141 rotates relative to the main cylinder 10, and the front connecting pin 143 slides in the front sliding groove 122.

[0067] The front end of the front adjustment member 14 matches and abuts the rear end of the front portion 12, and the outer diameter of the front adjustment member 14 is equal to the outer diameter of the front portion 12. This allows for quick and precise positioning of the front adjustment member 14 with the main barrel 10 during installation, ensuring installation accuracy. Furthermore, the front end of the front adjustment member 14 abuts against the rear end of the front portion 12 (there is minimal clearance between the front end of the front adjustment member 14 and the rear end of the front portion 12 of the main barrel 10), and the outer diameter of the front adjustment member 14 (the outer diameter of the front adjustment ring 142) is equal to the outer diameter of the front portion 12, making the overall structure of the lens more compact and the appearance more simple and beautiful.

[0068] Cooperate Figures 2 to 6 、 Figures 8 to 11 As shown, the rear adjustment member 15 includes an outer cylinder 151 that fits around the outer circumference of the rear portion 13, and a rear adjustment ring 152 that fits around the outer circumference of the outer cylinder 151. The P-IRIS aperture 16 and reduction gear 17 are mounted on the front end of the outer cylinder 151. The front end of the rear adjustment ring 152 is circumferentially provided with rear adjustment teeth 1521 that mate with the reduction gear 17. The reduction gear 17 includes a gear set that mates with the rear adjustment teeth 1521. The corresponding adjustment knob on the reduction gear 17 drives the rear adjustment ring 152 to rotate, thereby driving the rear-front lens frame 18 to move forward and backward.

[0069] At least one spiral rear guide hole 1511 is provided on the side of the outer tube 151, and the inner wall of the rear adjustment ring 152 is provided with a rear limit groove 1522 which is arranged in a one-to-one correspondence with the rear guide hole 1511, and the rear limit groove 1522 is parallel to the axial direction of the main tube 10, and the rear part 13 is provided with a spiral give way hole 131 which is arranged in a one-to-one correspondence with the rear guide hole 1511, and the inner side of the rear part 13 is provided with a rear mirror frame 19 and a rear guide nail 191 which is arranged in a one-to-one correspondence with the rear guide hole 1511, one end of the rear guide nail 191 is fixedly connected to the rear mirror frame 19, and the other end passes through the give way hole 131 and the rear guide hole 1511 in sequence and is embedded in the rear limit groove 1522. Among them, the number of rear guide holes 1511 is three, and they are evenly arranged along the circumferential direction of the outer tube 151. When the rear adjustment ring 152 rotates, under the cooperation of the rear guide pin 191 and the clearance hole 131, the rear guide hole 1511, and the rear limit groove 1522, the rear guide pin 191 moves simultaneously in the clearance hole 131, the rear guide hole 1511, and the rear limit groove 1522, driving the rear mirror frame 19 to move forward and backward relative to the main tube 10.

[0070] The front end of the outer cylinder 151 is extended radially outward to form an annular table 1512, the front side of the annular table 1512 is matched with the rear end of the front part 12, and the annular table 1512 is provided with a plurality of connection holes 1513 connected and fixed to the main cylinder 10 and a plurality of first mounting holes 1514 for mounting the reduction gearbox 17.

[0071] The front end of the annular table 1512 is extended forward with at least one curved block 1515. This curved block 1515 engages with the outer periphery of the front portion 12 and abuts against the rear end of the front adjustment member 14. One end of one of the curved blocks 1515 is provided with a second mounting hole 1516 for mounting the P-IRIS aperture 16. There are two curved blocks 1515, one located on either side of the front end of the annular table 1512. The design of the annular table 1512 and the curved blocks 1515 not only facilitates the installation of the reduction gearbox 17 and the P-IRIS aperture 16, but also allows for quick and precise positioning of the front end of the outer cylinder 151, ensuring precise subsequent installation. This also results in a more compact overall structure.

[0072] The outer cylinder 151 is connected and fixed to the side wall of the main cylinder 10 through a rear connecting nail 153. The outer wall of the rear adjusting ring 152 is provided with a rear sliding hole 1523 corresponding to the rear connecting nail 153. The rear sliding hole 1523 is arranged along the circumferential direction of the rear adjusting ring 152. The end of the rear connecting nail 153 is movably arranged in the rear sliding hole 1523. When the rear adjusting ring 152 rotates, the rear adjusting ring 152 rotates along the rear connecting nail 153 through the rear sliding hole 1523.

[0073] The outer circumference of the outer cylinder 151 is provided with positioning ridges 1517 along its circumference. The front end of the rear adjustment ring 152 mates with and abuts against these ridges 1517. There are three positioning ridges 1517, evenly spaced along the circumference of the outer cylinder 151. Once the rear adjustment ring 152 is installed, these ridges 1517 allow for quick positioning of the rear adjustment ring 152.

[0074] An assembly process for the novel road monitoring lens described above comprises the following steps:

[0075] S1: Install the second lens element 22, the third lens element 23, and the fourth lens element into the front lens frame 18, the main barrel 10, and the rear lens frame 19 in sequence. Then, install the front lens frame 18 with the lens into the inner side of the front portion 12 of the main barrel 10 from the front end of the main barrel 10.

[0076] S2: Install the front adjustment member 14, and install the sleeve 141 and the front adjustment ring 142 from the rear end of the main cylinder 10 to the front portion 12 of the main cylinder 10 in sequence, wherein the front end of the front adjustment member 14 abuts against the rear end of the head 11 of the main cylinder 10;

[0077] S3: Install the rear mirror frame 19 from the rear end of the main tube 10 into the inner side of the rear portion 13, and install the outer tube 151 from the rear end of the main tube 10 to the rear portion 13 of the main tube 10, wherein the front end of the outer tube 151 matches and abuts against the rear end of the front adjustment member 14 and the rear end of the front portion 12;

[0078] S4: Install the reduction gearbox 17 to the front end of the outer cylinder 151, and install the rear adjustment ring 152 from the rear end of the main cylinder 10 to the outer cylinder 151. The reduction gearbox 17 is fixed through the first mounting hole 1514 of the annular table 1512, and the front end of the rear adjustment ring 152 is matched and abutted against the positioning ridge 1517.

[0079] S5: Install the P-IRIS aperture 16 to the front end of the outer cylinder 151. The P-IRIS aperture 16 is fixed through the second mounting hole 1516 of the arc-shaped clamping block 1515.

[0080] S6: Install the lens of the first component 21 from the front end of the main barrel 10 to the inside of the main barrel 10. The lenses of the first component 21 are installed in sequence from back to front, that is, the first lens at the front end is installed last. When installing the first lens, it is fixed by gluing it through the glue hole 12 of the front part of the main barrel 10, thus completing the lens assembly.

[0081] Among them, when installing the first lens, compared with the existing solution where the first lens is installed separately on a frame, during assembly, the frame with the first lens installed needs to be installed and tested first, and then it can be unscrewed and glued if it meets the requirements. After the glue is completed, the final installation can be carried out. During this process, there is a risk of dust falling on the lens and poor image.

[0082] The present application discloses a novel road monitoring lens and assembly process. By mounting all lenses on a main barrel and installing a P-IRIS aperture and a reduction gearbox on a rear adjustment member, the lens assembly problem is solved while effectively improving the coaxiality and parallelism of all lenses and ensuring the imaging quality of the lens. In addition, the overall structure of the lens is simpler and more compact, and the overall appearance of the lens is more beautiful.

[0083] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A new type of road monitoring camera, characterized by: The lens assembly comprises a main barrel and a lens group disposed within the main barrel. The main barrel comprises a head, a front portion, and a rear portion from front to back, with the maximum outer diameters of the head, front portion, and rear portion decreasing in sequence. The first lens at the front end of the lens group is mounted on the inner side of the front portion. A front adjustment member is fitted from the rear end of the main barrel to the outer periphery of the front portion. A rear adjustment member is fitted on the outer periphery of the rear portion. A P-IRIS aperture and a reduction gearbox that cooperates with the front and rear adjustment members are mounted at the front end of the rear adjustment member. Among them, the rear adjustment part includes an outer cylinder that is matched and sleeved on the outer periphery of the rear part, and a rear adjustment ring that is matched and sleeved on the outer periphery of the outer cylinder. The P-IRIS aperture and reduction gear are installed at the front end of the outer cylinder. The front end of the rear adjustment ring is provided with rear adjustment teeth that cooperate with the reduction gear along its circumferential direction; the front end of the outer cylinder is provided with an annular table extending radially outward, the front side of the annular table is matched and abutted against the rear end of the front part, and the annular table is provided with a connecting hole that is connected and fixed to the main cylinder and a first mounting hole for installing the reduction gear.

2. The novel road monitoring camera according to claim 1, characterized in that: The front end of the annular table extends forward and is provided with at least one arc-shaped block, which is matched and engaged with the front periphery and abuts against the rear end of the front adjustment member. One end of one of the arc-shaped blocks is provided with a second mounting hole for mounting the P-IRIS aperture.

3. The novel road monitoring camera according to claim 2, characterized in that: There are two arc-shaped blocks, and the two arc-shaped blocks are respectively located on both sides of the front end of the annular table.

4. The novel road monitoring camera according to claim 1, characterized in that: The outer periphery of the outer cylinder is provided with positioning ridges along its circumferential direction, and the front end of the rear adjustment ring matches and abuts against the positioning ridges.

5. The novel road monitoring camera according to claim 1, characterized in that: At least one spiral rear guide hole is provided on the side of the outer tube, and a rear limit groove is provided on the inner wall of the rear adjustment ring in one-to-one correspondence with the rear guide hole, and the rear limit grooves are parallel to the axial direction of the main tube, and the rear part is provided with a spiral clearance hole in one-to-one correspondence with the rear guide hole, and the inner side of the rear part is provided with a rear mirror frame and a rear guide nail in one-to-one correspondence with the rear guide hole, one end of the rear guide nail is fixedly connected to the rear mirror frame, and the other end passes through the clearance hole and the rear guide hole in sequence and is embedded in the rear limit groove.

6. The novel road monitoring camera according to claim 1, characterized in that: The front adjustment part includes a sleeve that is matched and sleeved on the outer periphery of the front part, and a front adjustment ring that is matched and sleeved on the outer periphery of the sleeve. The rear end of the front adjustment ring is provided with front adjustment teeth that cooperate with the reduction gear box along its circumferential direction. The side of the sleeve is provided with at least one spiral front guide hole. The front part is provided with front limiting holes that are arranged one-to-one corresponding to the front guide holes, and the front limiting holes are all parallel to the axial direction of the main tube. The inner side of the front part is provided with a front frame and front guide pins that are arranged one-to-one corresponding to the front guide holes. One end of the front guide pin is fixed to the front frame, and the other end passes through the front limiting hole and is embedded in the front guide hole.

7. A novel road monitoring camera according to claim 1 or 6, characterized in that: The front end of the front adjusting member matches and abuts against the rear end of the front portion, and the outer diameter of the front adjusting member is equal to the outer diameter of the front portion.

8. An assembly process for the novel road monitoring lens according to claim 6, characterized in that: The lens assembly includes, from front to back, a first component, a second component, a third component, and a fourth component. A front lens frame is provided on the inner side of the front portion of the main barrel, and the second component is installed in the front lens frame. A rear lens frame is provided on the inner side of the rear portion of the main barrel, and the fourth component is installed in the rear lens frame. The assembly process includes the following steps: S1: Install the second, third, and fourth lens elements into the front frame, main barrel, and rear frame in sequence, and then install the front frame with the lens into the main barrel from the front end of the main barrel; S2: Install the front adjustment piece, and install the sleeve and the front adjustment ring from the rear end of the main cylinder to the front of the main cylinder in sequence; S3: Install the rear end of the main tube of the rear frame into the inner side of the rear part, and install the rear end of the outer tube of the main tube into the rear of the main tube; S4: Install the reduction gearbox to the front end of the outer cylinder, and install the rear adjustment ring from the rear end of the main cylinder to the outer cylinder; S5: Install the P-IRIS aperture to the front end of the outer barrel; S6: Install the lens of the first component from the front end of the main barrel to the inside of the main barrel to complete the lens assembly.

Images