Optical imaging system of electronic hysteroscopy matched with 1/4-inch CCD

Abstract

The invention discloses an optical imaging system of an electronic hysteroscopy matched with a 1 / 4-inch CCD. The optical imaging system of the electronic hysteroscopy matched with the 1 / 4-inch CCD comprises five coaxial spherical refraction lenses and a diaphragm, the coaxial spherical refraction lenses are arrayed in sequence from the object space to the image space, to be specific, the first lens is a concave lens, the light is diverged when passing through the first lens, and the surfaces of the lens towards the object space and the image space protrude towards the object surface; the second lens is a convex lens, the light is converged when passing through the second lens, the surface of the lens towards the object space protrudes towards the object surface, and the surface towards the image space protrudes towards the image space; the third lens is a concave lens, the light is emitted when passing through the third lens, the surface of the lens towards the object space protrudes towards the image space, and the surface towards the image space protrudes towards the object space; the fourth lens is a convex lens, the light is converged when passing through the fourth lens, and both surfaces of the lens towards the object space and image space protrude towards the object space. The imaging size, spatial resolution and field angle of the optical imaging system of the electronic hysteroscopy matched with the 1 / 4-inch CCD can meet the requirements of the 1 / 4-inch CCD, the uterine cavity does not have a dead zone, and the image is clear.

Description

technical field [0001] The invention relates to a medical electronic endoscope optical imaging system, in particular to an electronic hysteroscope optical imaging system suitable for anesthesia-free matching with a 1 / 4 inch CCD. Background technique [0002] Medical endoscope plays a very important role in clinical practice. Inserting the endoscope into the body cavity of the human body, the doctor can directly observe the tissue morphology and pathological conditions in the body cavity and internal organs through the endoscope, which can be conveniently and accurately diagnosed. Make a diagnosis of the disease. Compared with ordinary fiber optic endoscopes and rigid tube endoscopes, electronic endoscopes not only have clearer and brighter images, more realistic colors, and higher resolution, but also have higher signal-to-noise ratios and wider viewing angles. Discovery of lesions that could not be observed with fiberoptic endoscope in the past improves the detection rate ...

AI Technical Summary

Problems solved by technology

However, if the outer diameter of the hard part of the electronic endoscope exceeds the limit of 8 mm that is free from anesthesia, anesthesia is required for uterine examination, so it is only suitable for surgery, and it is not suitable for early diagnosis of cancer.

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