Digital adaptive correction method and system based on phase space optics

Abstract

The invention provides a digital adaptive correction method and system based on phase space optics. The digital adaptive correction method comprises the following steps: firstly, constructing an optical system based on phase space; performing three-dimensional reconstruction on the collected phase space information; using the means of digital calculations, performing aberration correction during reconstruction iteration of the image; and removing aberration caused by an imaging system or an imaging sample, thus greatly improving the imaging performance and enabling the digital adaptive correction method to be suitable for a quicker and more complex imaging environment and to be different from the traditional adaptive optical technology. According to the digital adaptive correction method,aberration correction is realized without hardware support of a spatial light modulator or a deformable mirror array and the like; digital correction of the optical aberration can be achieved only through a digital calculation post-processing method; meanwhile, correction of different aberrations can be conducted on different spatial positions at the same time; and the digital adaptive correctionmethod is more convenient and faster than a hardware correction method, and is a new method for removing the aberration of an optical system.

Description

technical field [0001] The invention belongs to the fields of optical imaging and information processing. Background technique [0002] Adaptive optics is one of the important branches in optics research. This technology is used in the optical imaging system, which can effectively compensate various interference factors in the imaging process. These interference factors, including the influence of atmospheric turbulence at the macro level, the strong scattering of biological tissues at the micro level, and the error of the optical imaging system itself, will cause wavefront distortion during the imaging process. Adaptive optics can effectively alleviate wavefront distortion, thereby improving imaging quality. It has been widely used in many fields such as astronomical observation and biological microscopic imaging, and has made significant progress. [0003] On the other hand, the optical imaging system based on phase space is also a hot spot in optical research in recent ...

AI Technical Summary

Problems solved by technology

However, due to the scattering of objects, errors in the design and construction of imaging systems, optical imaging systems based on phase space are particularly affected by optical aberrations.

Especially in the field of microscopic imaging, the phase space microscope is intended to image the three-dimensional volume of the microscopic sample, but due to the inhomogeneous refractive index and strong scattering in the deep layer of the microscopic sample, it often brings great difficulties to the imaging. wavefront distortion

Therefore, the phase space microscope cannot fully exert the performance of high-resolution three-dimensional imaging

There are also studies that introduce adaptive optics into the field of microscopic imaging, but usually introduce spatial light modulators to shape the wavefront, which reduces the imaging speed and makes it difficult to achieve real-time results.

Therefore, the phase space optical technology shows great limitations in high aberration scenarios; and in high-speed observation, it is difficult to combine with traditional adaptive correction methods, and the actual application scenarios are limited

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