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A wavefront modulated dark field adaptive optics retinal imager

A technology of adaptive optics and wavefront modulation, applied in application, medical science, fundus mirror, etc., can solve the problems of inability to observe, three-layer structure cannot be observed, etc., to achieve improved contrast, high resolution and high contrast imaging Effect

Active Publication Date: 2016-03-30
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, under the existing high-resolution imaging conditions close to the diffraction limit, only three layers of the ten-layer structure of the human retina can be observed, and the other layers cannot be observed; and for some people with diseases The three-layer structure cannot be observed by the human eye

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  • A wavefront modulated dark field adaptive optics retinal imager
  • A wavefront modulated dark field adaptive optics retinal imager
  • A wavefront modulated dark field adaptive optics retinal imager

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Embodiment Construction

[0021] Embodiments of the present invention are described below with reference to the drawings. It should be understood, however, that these descriptions are exemplary only and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0022] figure 1 It is a structural block diagram of the present invention.

[0023] Such as figure 1 As shown, a wavefront modulation dark field adaptive optics retinal imager of the present invention includes a beacon light source 1, a collimating lens 2, a beacon light bar 3, an illumination light source 4, a collimating lens 5, and a first beam splitter 6. Plane reflector 7, first spherical reflector 8, second spherical reflector 9, wavefront corrector 10, third spherical reflector 11, fourth spherical reflector 12, wavefront modulator 13, fifth spherical surface M...

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Abstract

The invention discloses a wavefront modulation dark field self-adapted optical retina imager, belonging to the technical field of retina imaging. The wavefront modulation dark field self-adapted optical retina imager is characterized in that a space optical modulator is additionally arranged at a pupil conjugated position in an imaging optical path and a matched filter (filtering diaphragm) is additionally arranged at a conjugated position (focal plane) of a retina specific layer in the optical path. The working principle is as follows: the distribution of a diffraction optical field at a pupil wavefront change focal plane part is modulated by the space optical modulator, and the matched filter is additionally arranged on the focal plane, so that diffraction light from the retina specific layer can be filtered, and the dark field imaging on the layer of a retina is realized, and furthermore, the imaging contrast of the structure of the adjacent layer is improved.

Description

technical field [0001] The invention relates to the technical field of an optical retinal imager, in particular to a wavefront modulation dark field adaptive optical retinal imager. Background technique [0002] In addition to low-order aberrations such as defocus and astigmatism, human eye aberrations also contain non-negligible high-order aberration components. At present, ordinary commercial ophthalmic equipment such as fundus cameras can only statically compensate low-order human eye aberrations, so the overall optical resolution cannot reach the diffraction-limited level. Adaptive optics technology just makes up for this defect and directly promotes the development of high-resolution fundus imaging technology. [0003] Foreign research teams such as David Williams, Donald Miller, Pablo Artal and the Institute of Optoelectronics Technology of the Chinese Academy of Sciences in China have successively obtained small field of view and high-resolution images of the living ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B3/12A61B3/14
Inventor 张雨东赵军磊戴云杨金生肖飞康健魏淩赵豪欣范真涛
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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