Spatial Stereoscopic Display with Variable Isoclinic Transflective Unit
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Solution Overview
Problem
Current true 3D display systems have complex structures that are difficult to control, requiring precise movement of intersecting infrared laser beams for dynamic 3D image formation, which is challenging to achieve with high scanning frequency and consistency.
Innovation Solution
A spatial stereoscopic display device with a variable isoclinic transflective unit and up-conversion material in the imaging space, where the laser beams are split and intersect to excite the material, forming a light-emitting point, allowing for real-time control and simplified structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two infrared laser beams are intersected to form 3D images in space, then multi-viewing-angle and all-round viewing are achieved, but the structure becomes complex and difficult to control
Solution Approach 1:
The patent divides the imaging space into multiple layers using a layered structure, with each layer containing specific voxels that can be independently addressed. This segmentation allows complex 3D images to be constructed from simpler layered components, reducing overall system complexity while maintaining multi-viewing capabilities
Solution Approach 2:
The patent introduces a spatial light modulator as an intermediary device between the laser sources and the imaging space. This modulator controls the intersection points of laser beams, simplifying the control mechanism while enabling precise 3D image formation with multi-viewing angles
2Productivity
If scanning frequency is increased to guarantee image integrity, then dynamic 3D image quality improves, but control difficulty increases
Solution Approach 1:
The patent implements periodic scanning of laser beams through the imaging space at controlled frequencies. By using regular periodic patterns for beam intersection movement, the system achieves high scanning frequencies while maintaining predictable and manageable control requirements
Solution Approach 2:
The patent incorporates feedback mechanisms that monitor the positions of laser beam intersections and adjust control signals in real-time. This feedback loop enables precise control at high scanning frequencies, ensuring image integrity while keeping the control system manageable through automated adjustment
3Device complexity
If layered structure with up-conversion material is used, then structure is simplified and control is easier, but brightness consistency becomes challenging
Solution Approach 1:
The patent applies local quality by using up-conversion materials specifically at the intersection points of laser beams within the layered structure. These materials convert infrared laser light to visible light locally, ensuring consistent brightness at each voxel while maintaining overall structural simplicity
Solution Approach 2:
The patent controls brightness consistency by adjusting parameters such as laser power, up-conversion material concentration, and layer spacing. By optimizing these parameters, the system achieves uniform visible light emission from up-conversion materials throughout the layered structure
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
Enables easy control and high-quality, multi-viewing-angle 3D imaging with consistent brightness and isotropy, allowing for 360-degree visible 3D images, surpassing current 2D and virtual 3D display technologies.
Implementation Method 1
The imaging principle of the true 3D display technology is to utilize the intersecting of two intersected infrared laser beams to directly form the 3D image in a 3D data field
Implementation Method 2
utilizing two infrared laser beams of different wavelengths to create visible light inside the display material via a two-photon upconversion process
Data Source
Figure 1~2
AI summary
Embodiments of the invention relate to a spatial stereoscopic display device and an operating method thereof. The spatial stereoscopic display device comprises a laser source, a two-dimensional scanning unit, a variable isoclinic transflective unit, a power source and position sensor unit, an imaging space and a 3D modulator, wherein the two-dimensional scanning unit receives laser light emitted by the laser source and projects the laser light onto the variable isoclinic transflective unit according to specific addressing information under the control of the 3D modulator; the variable isoclinic transflective unit divides the laser light projected thereon into a first splitting light and a second splitting light intersecting in the imaging space, by transmission and reflection; the power source and position sensor unit is connected with the variable isoclinic transflective unit to control an intersection of the first splitting light and the second splitting light; the imaging space is provided with an up-conversion material, and the up-conversion material at the intersection of the first splitting light and the second splitting light is excited to form a light-emitting point; and the 3D modulator is connected with the laser source, the two-dimensional scanning unit and the power source and position sensor unit.