Three-dimensional imaging method and device utilizing planar lightwave circuit

Abstract

A stereoscopic imaging method and device of a planar optical waveguide loop, the imaging method comprising the steps of: converting the coherent light emitted by a coherent light source into a two-dimensional point light source array, the position of each point light source in the two-dimensional point light source array being randomly distributed; discretizing a stereoscopic image into a large number of voxels and dividing the voxels into multiple groups according to the voxel brightness in descending order; for each voxel in each group, calculating the amount of phase adjustment of a point light source according to the distance of the voxel to the point light source, such that the light wave emitted by each point light source is in phase when reaching the voxel; accumulating the required amount of complex amplitude adjustment of each point light source for generating each voxel, driving the amplitude regulator and phase regulator of each point light source, and generating each group of voxels based on constructive interference. The imaging device consists of a coherent light source (1), a planar optical waveguide loop (2), a conductive glass front panel (3), and a back drive circuit (4), and can be widely used in the fields of computer and television three-dimensional display, three-dimensional human-machine interaction, and robotic vision.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional imaging, and in particular relates to a three-dimensional imaging method and device using a planar optical waveguide circuit. Background technique [0002] Three-dimensional display can be divided into pseudo three-dimensional display and true three-dimensional display. The former is a stereoscopic display based on binocular parallax, which presents two pictures with different viewing angles to the left and right eyes of the observer, making them produce stereoscopic illusions, and long-term viewing is likely to cause fatigue. The latter directly forms a real three-dimensional image in the air, and the observer does not need to wear any auxiliary glasses, making viewing more comfortable and natural. [0003] True three-dimensional stereoscopic display can be realized by non-coherent methods, such as integrated imaging technology and volume imaging technology, or by coherent methods, suc...

AI Technical Summary

Problems solved by technology

However, for large objects, the holographic interference fringes are on the sub-micron scale, which is far smaller than the pixel size of flat-panel displays; at the same time, massive interference fringe data brings great difficulties to real-time digital acquisition, processing, storage, transmission and display

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