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Abstract
Random scattering media prevent light information from directly transmitting through, them as the photons will deviate from their original propagation directions due to the inhomogeneity of the refractive index distribution in scattering media. Based on recent developed methods, light information transmission through scattering media is realized using a memory effect. However, the memory effect range limits it to a small field of view. To enlarge the field of view, in this article, we propose to use the ptychographic iterative engine to deliver information through scattering media. We experimentally demonstrate that the proposed method can deliver images beyond the memory effect range through the scattering layer with outstanding imaging performance.
Highlights
When the information-bearing light is disturbed by scattering media such as fog, haze [1], biological tissues [2], and the surfaces of walls [3], a common optical imaging system will fail to realize regular pixel-to-pixel mapping between the object space and the image space
The inherent reason is that the wavefront that carries the object information undergoes random disturbance as it propagates owing to the inhomogeneity of the refractive index distribution of the scattering media
The expanded uniformed beam was shone onto a digital micro-mirror device (DMD) from
Summary
When the information-bearing light is disturbed by scattering media such as fog, haze [1], biological tissues [2], and the surfaces of walls [3], a common optical imaging system will fail to realize regular pixel-to-pixel mapping between the object space and the image space. The inherent reason is that the wavefront that carries the object information undergoes random disturbance as it propagates owing to the inhomogeneity of the refractive index distribution of the scattering media. To solve this problem, several methods have been proposed in recent years to transmit, focus, and image through scattering media based on different application scenarios [4,5,6,7,8,9,10,11,12]. Transmission of image information through scattering media has received much attention. Single pixel detection could be applied if the object could be projected with a series of fringe patterns [7,8]
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