Novel zoom monitoring lens

Abstract

The invention discloses a novel zoom monitoring lens. The novel zoom monitoring lens comprises a main cylinder and a lens frame, wherein the main cylinder is of a hollow structure; at least one guide opening is formed in the main cylinder in the circumferential direction of the main cylinder, the guide opening is parallel to the axis direction of the main cylinder, and a guide part is arranged at the guide opening in the length direction of the guide opening; the glasses frame is contained in the main cylinder, at least one guide block is arranged on the glasses frame in the circumferential direction of the glasses frame, a matching part is arranged on the side edge of each guide block, the guide blocks extend out of the guide openings in the radial direction, and the matching parts are matched with the guide parts. The guide part is arranged in the length direction of the main cylinder guide opening; wherein the matching part is arranged on the side edge of the mirror frame guide block, and the matching part is matched with the guide part, so that the mirror frame and the main cylinder are not prone to loose fit, the mirror frame is not prone to incline, pixels of a lens product are not affected, and the coaxiality requirement of the mirror frame and the main cylinder can bet satisfied easily. Therefore, in the focusing process, sliding of the lens frame is more facilitated, and the phenomenon of jamming is not likely to happen.

Description

technical field [0001] The invention relates to the field of lens technology, in particular to a novel zoom monitoring lens. Background technique [0002] Traditional surveillance lens, such as the name: a lens assembly that uses a fixed focal length lens to achieve automatic focus, the patent application number is: 201611159294.8, which includes a lens fixing sleeve, a fixed focus lens, a ring adjustment, and an automatic focus control motor; The outer peripheral wall of the focus lens is provided with guide nails extending radially outward, the inner peripheral wall of the adjusting ring is provided with a guide chute that cooperates with the guide nails, and the wall of the lens fixing sleeve is provided with a guide nail that facilitates the radial direction of the guide nails. The through groove of the lens fixing sleeve protrudes outward, and the motor can drive the axial displacement of the fixed-focus lens by driving the adjusting ring to realize automatic focus adju...

AI Technical Summary

Problems solved by technology

[0003] In the monitoring lens of this structure, the fixed-focus lens is matched with the through-slot of the lens fixing sleeve through the guide pin to realize the coaxiality between the fixed-focus lens and the lens fixing sleeve. The defects of loose fit between the sleeves are prone to cause the fixed-focus lens to be easily tilted, which affects the pixels of the lens product, and the precision of the fit between the fixed-focus lens and the lens fixing sleeve is high, so that the two can meet the requirements The coaxiality, otherwise the fixed-focus lens is prone to jamming during the focusing process, which will affect the normal use of the product

[0004] In the current monitoring lens, according to the requirements of the coaxiality of the lens, rib structures are arranged on the inner wall of the lens fixing sleeve and the outer wall of the fixed-focus lens, and the coaxiality requirements of the two are achieved through the cooperation of the rib structures. , so that there is still the problem that the fixed-focus lens is prone to tilt due to the loose fit between the two, and the coaxiality requirement is achieved through the cooperation of the ribs on the inner wall of the lens fixing sleeve and the ribs on the outer wall of the fixed-focus lens. This is very difficult for mold development, and it is difficult to meet the coaxiality requirements of lens assembly

[0005] In addition, the traditional monitoring lens, such as the patent named: an adjustable synchronous focusing lens, the application number is: 201120061734. The front and rear adjustment rings, the two sector gears on the outside and the above two adjustment rings, and the drive motor, the drive gear of the motor meshes with the sector gear, and the sector gear and the two adjustment rings are fastened together by screws. There are many parts and assembly process It is complex and requires multiple sets of molds to mold each part separately, which makes the production cost of the product higher. At the same time, the assembly accuracy of the product cannot meet the requirements, which limits the improvement of the lens pixel

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