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Multi-channel retina spectrum imaging device

A spectral imaging and retinal technology, used in fundus mirrors, eye testing equipment, medical science, etc., can solve problems such as affecting measurement results, achieve the effect of easy processing, reduce overall costs, and achieve mass production

Active Publication Date: 2012-08-22
WENZHOU MEDICAL UNIV
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AI Technical Summary

Problems solved by technology

This technology is cheap, but because different spectral information is obtained by time-sharing method, changes in the life activities of the retina itself will greatly affect the measurement results

Method used

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  • Multi-channel retina spectrum imaging device
  • Multi-channel retina spectrum imaging device
  • Multi-channel retina spectrum imaging device

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Embodiment Construction

[0015] Such as figure 1 As shown, it is the basic optical path structure diagram of the NF-505 series fundus camera commonly used in Japan. The imaging port at the rear end of the device is used to install a film camera to realize imaging of the retina; The eyepiece can be connected to the retina, and this port is often used to install a digital camera to realize the digital upgrade of this device. Most fundus cameras have similar expansion ports. The present invention introduces a beam splitter 2 into the optical path, and utilizes the separated beam to realize multi-channel spectral imaging while retaining the original imaging function of the commercial fundus camera.

[0016] figure 2 Shown is a schematic structural diagram of the multi-channel retinal imaging device based on the polarization interference filter of the present invention. The reflected light beam from the fundus retina, after passing through the first imaging objective lens 1, partly passes through the b...

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Abstract

The invention discloses a multi-channel retina spectrum imaging device, which is constructed based on a polarization interference filter. The multi-channel retina spectrum imaging device is characterized in that: based on a commercial retina camera, an adjustable multi-channel spectrum imaging system is introduced at an expansion optical interface of the commercial retina camera so as to realize spectroscopic imaging on light beams with different wavelengths; and the multi-channel spectrum imaging system consists of a field diaphragm, a collimator objective, an optical filter, a polarization interference filter, an imaging objective and a photoelectric detector. The multi-channel retina spectrum imaging device has the main characteristics that: on the basis of keeping all functions of theconventional commercial retina camera, the expansion optical interface of the commercial retina camera is utilized only, and the device can simultaneously realize multi-channel spectrums so as to provide more characteristic information for disease diagnosis. The device has a simple and stable structure, is easy to process, is easy and convenient to mount and adjust, and is suitable for batch production.

Description

technical field [0001] The invention relates to a retinal spectrum imaging device, which can simultaneously realize multi-channel simultaneous measurement of the fundus retina. Background technique [0002] Vision is the most important source of information for human beings, and the fundus retina is the most important visual pathway. Any retinal lesion may bring huge physical and psychological harm to patients. At present, my country is the country with the largest number of blind and blinding sexually transmitted diseases in the world. At the same time, since some major systemic diseases (such as cardiovascular and cerebrovascular diseases, diabetes, cancer, etc.) will directly affect the normal function of the fundus retina, the diagnosis of these diseases also requires fine imaging examination of the retina. [0003] With the in-depth research on the human retina in scientific research and clinical medicine, it has gradually become a trend to obtain as much spectral inf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B3/12A61B3/14
Inventor 王媛媛吕帆厉以宇胡川
Owner WENZHOU MEDICAL UNIV
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