Human eye aberration measuring system based on phase diversity

A technology of human eye aberration and measurement system, which is applied in the direction of eye testing equipment, medical science, refractometer, etc., can solve the problem that the wavefront aberration of the human eye cannot be obtained, and achieve the effect of accurate and reliable measurement results and short measurement time

Inactive Publication Date: 2012-07-11
SUZHOU INST OF BIOMEDICAL ENG & TECH
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  • Description
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Problems solved by technology

At this time, it is equivalent to imaging an extended object, and the accurate wavefront aberration of the human eye cannot be obtained simply by using the iterative method mentioned above.

Method used

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  • Human eye aberration measuring system based on phase diversity
  • Human eye aberration measuring system based on phase diversity
  • Human eye aberration measuring system based on phase diversity

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Embodiment 1

[0064] see figure 1 As shown, a human eye aberration measurement system based on phase staggering includes an illumination optical system, a pupil alignment system, a staring optical system and an imaging optical system. An optical system for illuminating the fundus. The pupil alignment system is a system for aligning the human eye with the optical axes of the illumination optical system and the imaging optical system before detection. The staring optical system is mainly used to fix the human eye during detection. The optical system for the position of the eyeball, and the imaging optical system is mainly a system for observing and imaging the fundus area illuminated by the illumination system.

[0065] Further, the illumination optical system includes a first lens 3, an annular diaphragm 4, a second lens 5, and a third lens 6 arranged sequentially in the optical path, and also includes a light source 1 and an optical fiber 2 controlled by a computer 23; the light source 1. ...

Embodiment 2

[0075] see figure 2 As shown, a human eye aberration measurement system based on phase staggering includes an illumination optical system, a pupil alignment system, a staring optical system and an imaging optical system. An optical system for illuminating the fundus. The pupil alignment system is a system for aligning the human eye with the optical axes of the illumination optical system and the imaging optical system before detection. The staring optical system is mainly used to fix the human eye during detection. The optical system for the position of the eyeball, and the imaging optical system is mainly a system for observing and imaging the fundus area illuminated by the illumination system.

[0076] Further, the illumination optical system includes a first lens 3, an annular diaphragm 4, a second lens 5, and a third lens 6 arranged sequentially in the optical path, and also includes a light source 1 and an optical fiber 2 controlled by a computer 24; the light source 1....

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Abstract

The invention discloses a human eye aberration measuring system based on phase diversity, which comprises an optical illuminating system, a pupil aligning system, an optical staring system and an optical imaging system. The optical illuminating system is mainly an optical system which illuminates the fundus oculi of a human eye by the aid of infrared during detection, the pupil aligning system is a system for aligning the human eye with an optical axis of the optical illuminating system and an optical axis of the optical imaging system before detection, the optical staring system is mainly an optical system for fixing the position of the eyeball of the human eye during detection, and the optical imaging system is mainly a system for realizing observation imaging for the area of the fundus oculi illuminated by the illuminating system. The human eye aberration measuring system overcomes shortcomings that in the prior art, objective aberration measurement time is long, individual aberration correction cannot be guided, measurement accuracy is low, a measurement range is small and the like.

Description

technical field [0001] The invention belongs to a human eye aberration measurement technology, in particular to a human eye aberration measurement system based on phase stagger. Background technique [0002] In recent years, with the development of modern technology, the theory of wavefront aberration has been continuously developed, and the evaluation of the refractive state of the human eye, such as defocus and astigmatism, cannot meet the evaluation of the optical quality of the human eye. Wavefront aberration has changed from a simple optical concept to an effective way to change the visual quality of the human eye and an important means to evaluate the image quality. [0003] Measuring and correcting the wavefront aberration of the human eye has a significant effect on improving visual quality. Integrating predictable aberration factors into individualized design will be the ideal state pursued by individualized aberration correction guided by wavefront aberration. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/14A61B3/10A61B3/103
Inventor 宣丽李大禹孔宁宁李抄夏明亮齐岳
Owner SUZHOU INST OF BIOMEDICAL ENG & TECH
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