Light Field Display Polarization Multiplexing for Wide-View Resolution
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Solution Overview
Problem
Current light field displays face challenges in achieving high angular resolution and wide field of view due to the complexity of fabricating nano- or micro-scale pixels and the need for precise directional control of light beams, while existing multiplexing techniques like time division multiplexing (TDM) and polarization manipulation impact system efficiency and light output.
Innovation Solution
A device and method utilizing a polarization sensitive optical system with components such as circular polarizers, switchable half wave plates, and polarization sensitive beam deflectors to manipulate light polarization and direction, enabling high-resolution pixel density through time division multiplexing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If nano- or micro-scale pixels are used to achieve high angular resolution, then angular resolution is improved, but manufacturing complexity increases
Solution Approach 1:
The invention segments the pixel structure into conventional macro-scale pixels combined with directional optical elements (such as microlenses or prisms) that segment and direct light beams in specific directions. This segmentation allows achieving high angular resolution without fabricating nano- or micro-scale pixels, thereby reducing manufacturing complexity while maintaining the ability to generate multiple views with precise directional control.
2Manufacturing precision
If precise directional control of light beams is implemented, then view quality is improved, but system complexity increases
Solution Approach 1:
The invention introduces directional optical elements as intermediary components between the light source (conventional pixels) and the viewer. These intermediaries (microlenses, prisms, or beam deflectors) perform the directional control function, simplifying the overall system architecture while achieving precise beam directionality. The intermediaries handle the complex optical manipulation without requiring the entire system to be complex.
3Quantity of substance
If time division multiplexing with polarization manipulation is used, then pixel density is improved, but light output efficiency decreases
Solution Approach 1:
The invention employs time division multiplexing with periodic switching of polarization states to generate multiple views from a single pixel. By rapidly alternating polarization orientations (e.g., 0°, 45°, 90°, 135°) and using corresponding beam deflectors, the system creates the perception of multiple simultaneous views. This periodic action achieves high pixel density without permanent polarization filtering losses, maintaining light output efficiency.
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 solution achieves high angular resolution and wide field of view in light field displays without eye tracking, providing an immersive experience with increased pixel density and reduced complexity, eliminating the need for additional hardware and calibration.
Implementation Method 1
a circular polarizer comprising a quarter wave plate for receiving incoming light and providing a circularly polarized light beam
Implementation Method 2
a circular polarization switcher comprising a switchable half wave plate... reversing the rotational handedness of the circularly polarized light beam
Implementation Method 3
a polarization sensitive beam deflector configured to deflect the circularly polarized light based on its handedness
Data Source
AI summary
An optical time domain multiplexing system and method of driving a time division multiplexed light field display to output a multiplexed light field image. The time domain multiplexing device for use in light field display comprises a series of optical components to manipulate the polarization of light, resulting in independent time states to create a multiplexed light field display.