Eye fundus examination camera lens

Abstract

The invention discloses an eye fundus examination camera lens. The eye fundus examination camera lens comprises an aspheric surface eye contact object lens, a lighting optics focusing set and a microimaging object lens set. The lighting optics focusing set is arranged behind the aspheric surface eye contact object lens. The microimaging object lens set is arranged behind the lighting optics focusing set. The lighting optics focusing set comprises a reflecting lens, a flashlight, an infrared light emitter, a focusing lens set and a focusing motor. The reflecting lens is arranged on the left bottom of the focusing lens set. The flashlight and the infrared light emitter are arranged under the reflecting lens. The focusing motor is arranged above the focusing lens set. The infrared ray emitted by the flashlight and the infrared light emitter penetrates through the reflecting lens and reflected to the aspheric surface eye contact object lens, and passes through the aspheric surface eye contact object lens to project into the eye fundus of an eyeball. The infrared light ray reflected by the eye fundus forms an image through the aspheric surface eye contact object lens. Size of the image can be contracted or expanded in a focusing mode by the focusing lens set. And the image is eventually formed through the microimaging object lens set. With the adoption of the structure, the eye fundus examination camera lens can be conveniently dismounted, flexibly applied, and is strong in replaceability.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a fundus inspection lens. Background technique [0002] In the prior art, the lenses used to check the fundus are mostly combined, and are generally used in combination with an optical illuminator, a single aspheric eyepiece lens and a microscopic imaging objective lens. The spherical eyepiece objective lens illuminates and provides a light source, and microscopic imaging cannot be completed. The above-mentioned combined lens has a complex structure and a large volume. After debugging and assembly, it is an integral type, and the user cannot flexibly assemble and debug, and the flexibility between the components is poor. Contents of the invention [0003] The technical problem mainly solved by the present invention is to provide a fundus inspection lens, which is easy to disassemble, flexible to use, and highly replaceable. [0004] In order to solve the above-mention...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the lenses used to check the fundus are mostly combined, and are generally used in combination with an optical illuminator, a single aspheric eyepiece lens and a microscopic imaging objective lens. Spherical eyepiece objective lens illuminates and provides light source, microscopic imaging cannot be completed

The above-mentioned combined lens has a complex structure and a large volume. After debugging and assembly, it is an integral type. Users cannot flexibly assemble and debug, and the flexibility between components is poor.

Images