Endoscope rear end structure

Abstract

The invention discloses an endoscope rear end structure which comprises a shell, a shell mounting groove is formed in the rear end surface of the shell; an objective lens assembly is mounted in the shell mounting groove; the objective lens assembly comprises an objective lens assembly and an objective lens mounting base matched with the shell mounting groove; the objective lens mounting base is fixed in the shell mounting groove; the objective lens assembly is installed in the objective lens mounting base and is in sliding connection with the objective lens mounting base, the objective lens assembly comprises a first objective lens, an objective lens base and a second objective lens, the first objective lens and the second objective lens are fixed to the two ends of the objective lens baserespectively and located on the same straight line, and an ocular lens is fixed to the rear end of the objective lens mounting base and the ocular lens and the objective lens are located on the samestraight line. The endoscope rear end structure has the beneficial effects that the original rear end fixing structure is subjected to injection molding and integrated molding, and meanwhile, the objective lens system is integrally designed so that the endoscope is more convenient and faster to assemble and debug, and the imaging quality of the ocular lens is obviously improved; and the gluing surface of the objective lens system is increased so that the packaging quality is remarkably improved.

Description

technical field [0001] The present invention relates to the related technical field of endoscope, in particular to an endoscope rear end structure. Background technique [0002] Nasal endoscope is a kind of otolaryngology equipment. It is an optical device that can carry out detailed inspection of the nasal cavity. It generally refers to a rigid tube mirror with an angle ranging from 0 to 90 degrees. Relatively thin, only 2.7-4.0mm in diameter. Nasal endoscope can easily check the internal structure of nasal cavity, nasopharynx and even sinuses through the narrow nasal cavity and the structure in the nasal passage. It is an important means of diagnosing sinusitis and nasal polyps. Sinusitis Nasal polyps are treated delicately, allowing surgery to reach areas that traditional surgery cannot. [0003] Existing hard tube endoscope rear-end hardware includes pressure lens barrel, spring, fixed seat, adjustment plate, fixed ring, light beam mouth, common light cap and eyepiece ...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to overcome the disadvantages of large number of parts, difficult installation and debugging, and low precision of the existing rigid tube endoscope in the prior art, and provides an endoscope rear end structure that reduces the number of hardware parts to ensure the accuracy of the optical central axis

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