Volumetric three-dimensional display device and method based on circumferential screen scanning

Abstract

The invention discloses a volumetric three-dimensional display device and method based on circumferential screen scanning, the device comprises a high speed projection device, a screen turning transmitting device, a screen group, a rotating speed detection device, a central control module and a PC, and the screen group comprises a plurality of screens which are fixedly arranged on the screen turning transmitting device. According to the invention, a screen moves in an imaging space at uniform speed in one direction from beginning to end, imaging complexity is greatly reduced, large depth of field can be realized, compared with reciprocating type screen translation scanning, unidirectional rotation type screen scanning has no acceleration and deceleration process, scanning rate is easily to improve, voxel quantity of three-dimensional imaging is greatly increased, so that three-dimensional imaging resolution is improved, acceleration and deceleration of reciprocating motion are avoided, vibration and loss of hardware and structure portion of the device are reduced, and service life of the device is prolonged.

Description

technical field [0001] The present invention relates to the technical field of three-dimensional display, in particular to a volumetric three-dimensional display device and method based on circular screen scanning. Background technique [0002] In recent years, 3D display technology and equipment, as the next-generation new display technology vigorously developed by various developed countries, have become increasingly popular cutting-edge technology fields. Compared with two-dimensional display, three-dimensional stereoscopic display has more sense of depth, layering and reality, so that observers can generate psychological cognition through visual perception and obtain richer information. Three-dimensional stereoscopic display technology has broad application prospects in machine vision, virtual display and augmented reality, 3D TV, 3D movies, 3D games, and even military, medical imaging, education, aerospace and other fields. [0003] If the display itself is three-dimen...

AI Technical Summary

Problems solved by technology

[0008] However, one problem with the reciprocating motion scanning of the screen is that the motion process of the screen is not a uniform motion, and reciprocation requires non-stop acceleration and deceleration. The voxel update frequency during acceleration and deceleration should match the voxel update frequency during uniform motion to ensure that the 3D display is not distorted.

Therefore, the projection frequency of the high-speed projection device must be accurately calculated to match the reciprocating trajectory of the screen, which increases the complexity of the system

Or only project in the constant velocity area as shown in the above figure, which wastes a lot of 3D display depth of field and reduces the number of voxel points

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