Miniaturized full Stokes vector polarization imaging device based on binary digital coded birefringent crystal

Abstract

The invention discloses a miniaturized full Stokes vector polarization imaging device based on a binary digital coded birefringent crystal, including a spectral filter (1), an imaging lens (2), a binary digital coded birefringent crystal sheet (3), a micro polarizer array (4), and a light intensity detector (5). Binary digital coding is carried out on the birefringent crystal sheet by making use of the birefringence effect of a birefringent crystal and using a micro sodium optical processing method, and the birefringent crystal sheet is integrated with the micro polarizer array and the light intensity detector to form a compact and fully-functional full Stokes vector polarization imaging device. A full Stokes vector can be acquired through only one exposure, and the real-time performance is good. The device has a compact structure and a stable system. The micro optical structure is large, the requirement on precision is low, the cost is low, and the device can be mass produced. The device has low requirement on environment, and has stable performance. The device can be widely used in important areas such as astronomical polarization imaging, biological tissue detection and medicinediagnosis, remote sensing imaging, and target detection.

Description

technical field [0001] The invention relates to the field of compact full-Stokes vector polarization imaging, in particular to a miniaturized full-Stokes vector polarization imaging device based on a binary digital coded birefringent crystal. Background technique [0002] Polarization is an inherent property of light that reflects the transverse wave properties of light. Compared with the traditional intensity imaging technology, the polarization imaging technology can obtain the spatial distribution information and physical and chemical information of the target object at the same time, greatly increasing the amount of target information, and has the ability and characteristics that the traditional intensity imaging does not have. Therefore, polarization imaging technology has shown great development potential and has become one of the research and application hotspots at home and abroad. It is widely used in astronomical observation, biological tissue detection and medical...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to propose a binary digital encoding method for birefringent crystal slices in view of the shortcomings of traditional polarization imaging devices, such as high structural complexity, incomplete polarization imaging parameters, complex process of phase modulation devices, and high cost, and Use it as a polarization phase shifting device, together with the polarizer array to form a new polarization imaging device, to realize the full Stokes vector real-time polarization imaging of the target

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