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Portable fundus camera optical system

An optical system and portable technology, applied in the field of optics, can solve problems such as complex optical structure and poor portability, and achieve the effect of simple design structure and improved practicability

Active Publication Date: 2020-08-25
FOSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing fundus cameras have complex optical structures and poor portability

Method used

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  • Portable fundus camera optical system
  • Portable fundus camera optical system
  • Portable fundus camera optical system

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Embodiment Construction

[0017] The idea, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to The protection scope of the present invention. In addition, all the connection / connection relationships mentioned in this article do not refer to the direct connection of components, but mean that a better connection structure can be formed by adding or reducing connection accessories according to specific implementation conditions. The various technical features in the invention can be combined interactively on the premise of not conflicting wi...

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Abstract

The invention discloses a portable fundus camera optical system which comprises a retina objective lens group and an imaging lens group, wherein the retina objective lens group and the imaging lens group are sequentially arranged on the same optical axis from left to right; the retina objective lens group comprises a first lens surface, a second lens surface, a third lens surface, a fourth lens surface, a fifth lens surface and a sixth lens surface which are sequentially arranged from left to right; the imaging lens group comprises a seventh lens surface, an eighth lens surface, a ninth lens surface, a tenth lens surface, an eleventh lens surface, a twelfth lens surface, a thirteenth lens surface, a fourteenth lens surface, a fifteenth lens surface and a sixteenth lens surface which are sequentially arranged from left to right. The total length of the fundus camera optical system is smaller than or equal to 184 mm, the overall design structure is simple, and the portable requirement ismet. The system disclosed in the invention is mainly applied to the technical field of optics.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a portable fundus camera optical system. Background technique [0002] A fundus camera is a medical instrument that illuminates the fundus through an illumination system, and then images the fundus onto a CCD or CMOS photosensitive chip through an imaging system to obtain fundus images. The fundus camera is used to check whether the tissues of the fundus, such as the retina, optic disc, and blood vessel distribution, are abnormal. It is of great significance for the diagnosis and prevention of ophthalmic diseases and vascular-related diseases. So far, the design of fundus cameras has formed two relatively complete structures, namely internal lighting and external lighting. However, the existing fundus cameras have complex optical structures and poor portability. Contents of the invention [0003] The purpose of the present invention is to provide a portable fundus camera opt...

Claims

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Application Information

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IPC IPC(8): G02B13/00G03B15/02G02B1/00
CPCG02B13/00G03B15/02G02B1/00
Inventor 伍雁雄余苗王丽萍郭智元张宏炫
Owner FOSHAN UNIVERSITY