Endoscope

Abstract

The invention discloses an endoscope which comprises an optical imaging lens, the optical imaging lens comprises a first glass substrate, a second glass substrate, a third glass substrate and chip protection glass which are sequentially arranged from the object side to the phase side, and a first aspheric parameter characteristic functional film is imprinted on the back face of the first glass substrate; the first aspheric surface parameter characteristic functional film is provided with a first aspheric surface, the front surface of the second glass substrate is plated with a diaphragm and is embossed with a second aspheric surface parameter characteristic functional film, the second aspheric surface parameter characteristic functional film is provided with a second aspheric surface and a third aspheric surface, and the back surface of the second glass substrate is embossed with a third aspheric surface parameter characteristic functional film. The third glass substrate is provided with a third aspheric surface, the third aspheric surface parameter characteristic functional film is provided with a fourth aspheric surface, the fourth aspheric surface parameter characteristic functional film is embossed on the front surface of the third glass substrate, and the fourth aspheric surface parameter characteristic functional film is provided with a fifth aspheric surface and a sixth aspheric surface.

Description

technical field [0001] The invention relates to the field of medical endoscopes. Background technique [0002] The medical endoscope analyzes the disease by extending into the patient's body to observe the lesions of local tissues. For complex tissues such as the nasal cavity, ear, throat, etc., the device that penetrates into the human body is too large, which will cause the patient to experience discomfort such as jamming and suffocation. In addition, for the optical imaging lens, a certain working distance is required. If the observed object is close to the objective lens, a clear image of the corresponding tissue will not be captured, which will seriously affect the working effect of the endoscope. In addition, for imaging components that enter complex human tissues, due to space constraints, the scope of activity of the observation components is very small, and a large observation angle must be provided to shorten the actual number of shots and time to speed up the prog...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: the purpose of the invention is to solve the problems of existing endoscopes with too long length and large diameter

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