Volumetric 3D Display Using DMD Beam Segmentation
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Solution Overview
Problem
Conventional volumetric display systems are inefficient, wasting laser light and requiring higher power to improve image quality, which increases costs and risks damage to the display volume, while being limited by laser power and unable to effectively produce high-resolution, high-brightness three-dimensional images.
Innovation Solution
An ultra high-resolution volumetric 3D display system that uses an image chamber and an addressing system to direct electromagnetic energy to slice through the chamber, forming a line that moves along a third axis to create a 3D image, with a line generator comprising collimating, slicing, rotating, homogenization, and focusing optics to control the beam and synchronize with an imaging system for efficient upconversion and high-resolution imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If higher laser power is used to improve image quality, then image brightness and resolution are improved, but system cost increases and the display volume may be damaged
Solution Approach 1:
The patent segments the laser beam into multiple discrete columns using a DMD array, where only the specific columns needed for the 3D image are enabled. This segmentation allows precise delivery of laser power only to the required regions, improving image brightness where needed while avoiding damage to the entire display volume.
Solution Approach 2:
The patent applies local quality by enabling only the specific columns of the DMD array that correspond to the 3D image data, rather than illuminating the entire array. This creates localized high-intensity regions exactly where the image pixels are formed, improving image quality without uniformly increasing power across the whole display volume which would cause damage.
2Ease of operation
If conventional volumetric display architecture is used with two projectors, then a 3D image can be formed, but laser light is wasted and system efficiency is low
Solution Approach 1:
The patent extracts and eliminates the redundant second projector from the conventional two-projector architecture. By using a single projector with a DMD array that can directly modulate laser light column-by-column, the system achieves 3D image formation without the energy waste associated with the second projector, while maintaining the ability to create volumetric images.
Solution Approach 2:
The patent changes the operational parameters by using a single projector with precise digital control over individual columns via a DMD array, rather than using two projectors. This parameter change enables direct mapping of image data to laser columns, eliminating the energy waste of the conventional dual-projector approach while maintaining 3D image formation capability.
3Manufacturing precision
If conventional volumetric display systems are used, then a 3D image can be displayed, but the systems are limited by laser power and cannot achieve ultra high-resolution
Solution Approach 1:
The patent segments the laser beam into many fine columns using a high-resolution DMD array, creating numerous narrow columns that can be precisely controlled. This segmentation enables ultra-high-resolution imaging because each column can be independently addressed with appropriate power levels, achieving fine spatial resolution without requiring excessive total laser power.
Solution Approach 2:
The patent changes the system parameters by using a single projector with a DMD array that provides precise digital control over individual columns. This allows the system to achieve ultra-high-resolution by controlling the width and intensity of each column independently, overcoming the laser power limitations of conventional systems through efficient power distribution across many fine-resolution elements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system achieves high-resolution, high-brightness three-dimensional images with efficient use of electromagnetic energy, reducing waste and increasing image quality without damaging the display volume, by precisely controlling the beam to form voxels and synchronizing energy delivery for continuous, flicker-free viewing.
Implementation Method 1
direct a beam of electromagnetic energy at a first wavelength to slice through the image chamber
Implementation Method 2
The addressing system comprises a line generator to shape the beam into a line extended along a second axis
Implementation Method 3
An imaging system delivers the electromagnetic energy at a second wavelength to an area within the provided image slice
Implementation Method 4
The line is moved along a third axis to form a three dimensional (3D) image
Data Source
AI summary
An ultra high-resolution volumetric three-dimensional (3D) display system comprises an image chamber, and an addressing system to direct a beam of electromagnetic energy at a first wavelength to slice through the image chamber. The beam of electromagnetic energy slices the image chamber along a first axis to provide an image slice. The addressing system comprises a line generator to shape the beam into a line extended along a second axis. An imaging system delivers the electromagnetic energy at a second wavelength to an area within the provided image slice. The line is moved along a third axis to form a three dimensional (3D) image.