Display Device Collimation and Waveguide Merging Light Beams
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Solution Overview
Problem
Suspension display devices require a large number of pixels to achieve high resolution, making mass production and higher resolutions challenging due to the need for many angles of view, each requiring a separate display unit.
Innovation Solution
A display device comprising a display panel, a collimation unit to convert emergent light into parallel beams, a light waveguide unit that expands these beams to multiple positions, and an imaging unit to converge them into a real image point, reducing the number of pixels needed while maintaining high resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If suspension display uses many angles of view with one display unit per angle, then the viewing angles are sufficient, but the number of pixels required becomes extremely large (104 times larger than conventional display)
Solution Approach 1:
The patent merges multiple light beams from different display units into a single display unit by using optical elements (collimation lens, beam combiner, imaging lens) to combine the light paths. This allows one display unit to serve multiple viewing angles simultaneously, dramatically reducing the total number of pixels needed while maintaining sufficient viewing angles.
Solution Approach 2:
The patent introduces optical intermediaries (collimation lens, beam combiner, imaging lens) between the display unit and the viewer to enable light from a single display unit to reach multiple viewing angles. These intermediary optical elements facilitate the merging of light beams and enable one display unit to serve multiple angular positions.
2Manufacturing precision
If suspension display requires 104 times more pixels than conventional display, then the resolution can be achieved, but mass production and manufacturing become infeasible
Solution Approach 1:
By merging multiple light beams into one display unit, the patent reduces the pixel count to a manufacturable level while preserving the effective resolution through optical combining. This makes mass production feasible as the display unit complexity is dramatically reduced.
Solution Approach 2:
The patent replaces the mechanical approach of using many separate display units with an optical system that combines light beams. This substitution of mechanical complexity with optical functionality enables mass production while maintaining the required resolution.
3Illumination intensity
If suspension display uses one display unit per angle of view, then each angle receives adequate light, but the device complexity increases significantly
Solution Approach 1:
The patent uses optical intermediaries (collimation lens, beam combiner, imaging lens) to distribute light from a single display unit to multiple viewing angles. These intermediaries ensure adequate light intensity reaches each angle while maintaining a simple single-display-unit configuration.
Solution Approach 2:
The patent segments the light beam spatially using optical elements, directing different portions of the combined light to different viewing angles. This segmentation of light paths allows one display unit to serve multiple angles with sufficient illumination intensity.
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 high-resolution suspension display with fewer pixels, simplifying the production process and achieving more angles of view compared to conventional methods.
Implementation Method 1
a collimation unit (2) located on a light emergent side of the display panel (1), the collimation unit (2) being configured to convert emergent light in a same position of the display panel (1) into parallel light beams in a same direction
Implementation Method 2
a light waveguide unit (3) located on one side of the collimation unit (2) away from the display panel (1), the light waveguide unit (3) being configured to cause the parallel light beams to be emergent from at least two positions
Implementation Method 3
an imaging unit (4) opposite to the light emergent surface of the light waveguide unit (3), the imaging unit (4) being configured to converge the parallel light beams emergent from the at least two positions of the light emergent surface of the light waveguide unit (3) into a real image point
Data Source
AI summary
The present disclosure provides a display device including a display panel; a collimation unit located on a light emergent side of the display panel and configured to convert emergent light in the same position of the display panel into parallel light beams in the same direction; a light waveguide unit, which is located on one side of the collimation unit away from the display panel, includes a light incident surface and a light emergent surface opposite to the collimation unit, and is configured to cause the parallel light beams to be emergent from at least two positions of the light emergent surface; and an imaging unit opposite to the light emergent surface of the light waveguide unit and configured to converge the parallel light beams emergent from the at least two positions on the light emergent surface of the light waveguide unit into a real image point.