Binocular laser interference fringe visual perception learning training instrument

Abstract

A binoculus laser interference fringe visual perception study training instrument comprises a light source, an optical system, an interference fringe frequency control device, an interference fringe contrast control device, an interactive device and a computer. Two paths of the same light are obtained after coherent lights sent out by the light source pass the optical system, and are respectivelysent to the left and the right eyes of a human test subject, wherein each path of light respectively comprises two beams of coherent light and one beam of non-coherent back light, both the two beams of coherent light of each path are converged at the pupil, the produced two light points are interfered with each other, and the same interference fringes are generated at the left and the right eye grounds. The interference fringe frequency control device adjusts the converged space of the two beams of coherent light of each path at the pupil, and accordingly, the frequency of the interference fringes is adjusted; and the interference fringe contrast control device is used for adjusting the overall contrast of the interference fringe of each path. The binoculus laser interference fringe visual perception study training instrument can directly avoid the influence of human eye optical system aberration and diffraction functions, and does not need complicated aberration measurement and correction devices; and the binoculus laser interference fringe visual perception study training instrument is more approximate to the daily eye using state of human beings; and the visual function is moreeffectively improved.

Description

technical field [0001] The invention relates to a binocular laser interference fringe visual perception learning and training instrument. Background technique [0002] The earlier definition of perceptual learning was given by Gibson (1953), that is, perceptual learning is the improvement of the ability to extract information from the external environment, and this learning is the result of the interaction between the subject's practice and physiological maturity. Since Volkman first discovered it in 1858, the internal mechanism and related applications of perceptual learning have been greatly developed. Although it is far from reaching a unified understanding of its essence, the current research recognizes the fact that perceptual learning improves the individual's ability to obtain external information on the one hand, and on the other hand changes and improves the behavioral decision-making mechanism over a long period of time. Its physiological basis is the functional p...

AI Technical Summary

Problems solved by technology

However, this training device has the following defects: (1) Although the wavefront aberration of the human eye can be corrected by using adaptive optics technology, it still cannot overcome the influence of diffraction

(2) The visual target display device in this invention generally utilizes CRT displays, commercial projectors, organic light-emitting displays, etc., due to the limitation of the resolution of these devices themselves, it is difficult to produce high-spatial-frequency visual stimuli

(3) The correction effect of the aberration in this invention depends on the measurement of the aberration and the corresponding control method. Due to factors such as the dynamics of the wavefront aberration of the human eye, this measurement and control method is very complicated

These factors have limited the popularization and use of the adaptive optics visual perception learning training instrument

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