Operating Microscope Camera Optical System

Abstract

The present invention discloses an image pickup optical system of an operating microscope. The system comprises a beam splitter prism, a first lens, a second lens and a third lens which are arranged sequentially along a central optical axis; the first lens is a positive-focal power lens having a first light beam incoming surface and a first light beam outgoing surface, wherein the first light beamincoming surface is opposite to the beam splitter prism; the second lens is a negative-focal power lens having a second light beam incoming surface and a second light beam outgoing surface, wherein the second light beam incoming surface is separated from the first light beam outgoing surface along the central optical axis by a first interval; the third lens is a positive-focal power lens having athird light beam incoming surface and a third light beam outgoing surface, wherein the third light beam incoming surface is separated from the second light beam outgoing surface along the central optical axis by a second interval, and the third light beam outgoing surface is opposite to the image plane of the change coupled device of the operating microscope; the first interval ranges from 4mm to1.2mm; and the second interval ranges from 4.4mm to 1.35mm. The system of the present invention has little possibility of causing light energy loss and can be applied to different CCDs (change coupled devices).

Description

technical field [0001] The invention belongs to the technical field of optical system design, and in particular relates to an operating microscope imaging optical system. Background technique [0002] The operating microscope enlarges the surgical field of view, enables doctors to see the fine structure of the surgical site, and can perform various microsurgeries that cannot be completed with the naked eye, expands the scope of surgical treatment, and improves the precision of surgery. It is widely used in ophthalmology, ENT Department of Dentistry, Dentistry, Neurosurgery, Hand Surgery, Gynecology and many other medical fields. The camera system of the surgical microscope is generally used as an optional accessory of the surgical microscope. It is connected to the optical path of the surgical microscope, and a part of the light is divided from the main optical path. It can provide the information of the surgical surface in the doctor's field of view to the CCD (Charge- Cou...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a light energy loss-free, easy to install and adjust and applicable to different CCDs, aiming at the defect that the existing operating microscope imaging optical system is easy to cause light energy loss and is only applicable to a specific CCD. Operating Microscope Camera Optical System

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