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Binocular indirect ophthalmoscope with polarization function

A technology of ophthalmoscopy and polarization, applied in the field of ophthalmoscopy, can solve the problems of poor observation effect and interference, achieve better observation effect, eliminate strong reflected light and other reflected stray light interference

Inactive Publication Date: 2017-04-05
ZUMAX MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] See the publication number as US8262224B2 U.S. Patent: It discloses the simultaneous use of polarizing and analyzing components in the illumination light path, and by rotating any one of them to change its relative polarization angle, so as to control the intensity of illumination light, but there are reflected light and other Reflected stray light interference, resulting in poor observation effect

Method used

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  • Binocular indirect ophthalmoscope with polarization function
  • Binocular indirect ophthalmoscope with polarization function
  • Binocular indirect ophthalmoscope with polarization function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] as shown in the picture 1 Shown: The ophthalmoscope also includes an analyzer component set in the observation light path 30 , the analyzer component 30 left eyepiece 10a , right eyepiece 10b the front. Analyzer 30 It can be a polarizer, a polarizing film, or a polarizing crystal material. Analyzer 30 The polarization direction can be adjusted as needed to control the intensity of the reflected light, and the optical path can be cut out individually or entirely.

[0034] The working principle of this embodiment is as follows:

[0035] light source 20 The emitted light, in turn, passes through the condenser 21 , aperture 22 , projection mirror 23 through the lighting reflector 24 Reflected to the dust-proof lens 5 , objective lens 12 illuminate the subject's eyes 4 The area of ​​the fundus to be inspected, and the subject's eye 4 The light reflected by the fundus of the eye passes through the objective lens 12 , du...

Embodiment 2

[0037] as shown in the picture 2 As shown, the ophthalmoscope also includes analysis components 30 , polarizer 31 , the analyzer component 30 Set in the observation light path, respectively located in the left eyepiece 10a , right eyepiece 10b front part; polarizing part 31 Set in the light path of the illumination and located in the projection mirror 23 and illuminated reflectors 24 between. Polarizer 31 It can be a polarizer, a polarizing film, or a polarizing crystal material. The polarizing component 31 The polarization direction can be adjusted as needed to control the intensity of the reflected light, and the optical path can be cut out individually or entirely. In this embodiment: the analysis component 30 , polarizer 31 The polarization direction of has an included angle, and the included angle is between 0-90 between degrees.

[0038] The working principle of this embodiment is as follows:

[0039] light source 20 The...

Embodiment 3

[0041] as shown in the picture 3 Shown: The ophthalmoscope also includes an analyzer 30 , polarizer 31 , dustproof window 5 Observation light passing area 50 , Illuminating light through the area 51 , the analyzer component 30 Set in the area where the observation light passes 50 On, the illuminating light passes through the area 51 is transparent; polarizing part 31 Set in the light path of the illumination and located in the projection mirror 23 and illuminated reflectors 24 between.

[0042] The working principle of this embodiment is as follows:

[0043] light source 20 The emitted light, in turn, passes through the condenser 21 , aperture 22 , projection mirror 23 , polarizer 31 , lighting reflector 24 , dustproof window 5 The lighting light passes through the area 51 Projected to the objective lens 12 illuminate the subject's eyes 4 The area of ​​the fundus to be inspected, and the subject's eye 4 The light reflected by the...

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PUM

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Abstract

The invention relates to a binocular indirect ophthalmoscope with a polarization function. The binocular indirect ophthalmoscope comprises an ocular set, an observation reflector set, an objective lens, a light source, a condensation projecting mirror set and an illumination reflector. The ocular set, the observation reflector set and the objective lens are sequentially arranged in the observation light path. The light source, the condensation projecting mirror set, the illumination reflector and the objective lens are sequentially arranged in the illumination light path. The ophthalmoscope further comprises a polarization analyzing component. The polarization analyzing component is arranged in the observation light path. The binocular indirect ophthalmoscope adopts the polarization analyzing component for eliminating disturbance of strong reflected lights of the objective lens and corneas and other reflected stray lights, and thus the observation effect is better.

Description

technical field [0001] The invention relates to an ophthalmoscope, in particular to a binocular indirect ophthalmoscope with polarization function. Background technique [0002] Ophthalmoscopy can be divided into direct ophthalmoscopy and indirect ophthalmoscopy. Binocular indirect ophthalmoscopy is mainly used for clinical fundus examination. The fundus, also known as the retina, is covered with the only capillaries that can be directly and clearly observed in the human body. Many diseases will cause specific reactions or complications in the fundus, such as high blood pressure, diabetes, thrombosis and other cardiovascular diseases. It is the main basis for early diagnosis of these diseases to check whether vascular lesions have occurred in the fundus, to achieve early detection, early diagnosis, early prevention, and to effectively treat patients before irreversible retinal damage occurs. Therefore, fundus examination has very important clinical significance . [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/12A61B3/14
Inventor 李剑月马丁·威实理沈顺国陈小甜杨晓华
Owner ZUMAX MEDICAL
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