Device and method for polarization imaging
A polarization imaging, orthogonal polarization technology, applied in optics, instruments, nonlinear optics, etc., can solve the problem of insufficient compact structure of polarization imaging devices
Inactive Publication Date: 2018-07-10
SUPERD CO LTD
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[0005] The purpose of the technical solution of the present invention is to provide a polarization imaging device and method without setting a polarizer and a driving structure for adjusting the polarization direction of the polarizer, thereby solving the problem that the structure of the polarization imaging device in the prior art is not compact enough
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[0034] In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.
[0035] The invention provides a polarization imaging device, such as figure 1 As shown, it includes an image sensor 10 and a liquid crystal lens 20 arranged oppositely. Wherein the liquid crystal lens 20 comprises a liquid crystal layer, an alignment layer, a first electrode group, a second electrode group and a voltage drive circuit; the first electrode group comprises a first electrode layer and a second electrode layer; the second electrode group comprises a first electrode layer Three electrode layers and a fourth electrode layer; the first electrode layer, alignment layer, liquid crystal layer, and second electrode layer are arranged in sequence along the optical axis of the system; the third electrode layer and the fourth electro...
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The invention provides a polarization imaging device and an imaging method for the polarization imaging device. The polarization imaging device comprises a liquid crystal lens and one image sensor. The liquid crystal lens is provided with two groups of electrodes in orthogonal array, and has functions of lens imaging, polarized light selection, and polarization direction rotation. External light enters the image sensor through the liquid crystal lens. Through controlling voltage loaded on the liquid crystal lens in a time-sharing manner, a plurality of polarization images with different polarization angles can be obtained, so as to realize polarization imaging. A polaroid and a device used to rotate the polaroid are not needed to be additionally arranged. Therefore, compared with the priorart, the device is more compact in structure and more convenient in operation, and has whole-process voltage control, and is beneficial for integration and miniaturization.
Description
technical field [0001] The present invention relates to the technical field of polarization imaging, in particular to a polarization imaging device and method. Background technique [0002] Polarization imaging technology has a wide range of applications in the fields of earth remote sensing, astronomical observation, target recognition, medical diagnosis and three-dimensional reconstruction. The principle of polarization imaging technology is: when natural light (non-polarized light) interacts with matter, such as reflection, refraction, scattering, and absorption, the outgoing light will become partially polarized light or linearly polarized light in most cases. According to Kirchhoff's law and Fresnel's formula, the polarization degree of the outgoing light is directly related to the inherent properties of the material interface (such as composition, structure, roughness, water content, etc.), and the reflection angle (or refraction angle). Therefore, by analyzing the po...
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IPC IPC(8): G02F1/1337G02F1/29G02F1/133G02F1/13G02B27/28
CPCG02B27/286G02F1/1313G02F1/13306G02F1/1337G02F1/29
Inventor 赵娟
Owner SUPERD CO LTD