Light-Field Scanner Using Telecentric Laser Beam for VAC Resolution
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Solution Overview
Problem
Existing light-field displays face challenges in integrating laser beams as an input source, which is necessary to resolve the vergence-accommodation conflict (VAC) and enhance visual experience.
Innovation Solution
A light-field scanner is developed, comprising a light-field buffer, a laser-beam scanner, and a collimator, which processes and outputs laser beams as telecentric light to scan sub-light-field images, thereby addressing the VAC issue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If panel-based light source is used in light-field generator, then the display can be manufactured with existing technology, but the vergence-accommodation conflict (VAC) cannot be effectively resolved
Solution Approach 1:
The patent changes the fundamental parameter of the light source from panel-based to laser-based. This parameter change enables the system to resolve VAC by using laser beam scanning to create light fields with proper vergence characteristics, while the collimator ensures the laser beam maintains telecentric properties throughout the display process.
2Reliability
If laser beam is introduced as input for light-field display, then VAC can be resolved, but the system complexity increases due to integration challenges
Solution Approach 1:
The collimator acts as an intermediary component between the laser beam scanner and the light-field generator. It mediates the integration by transforming the laser beam into telecentric light that is compatible with the light-field generator's optical path, thereby reducing integration complexity while maintaining VAC resolution capability.
Solution Approach 2:
The light-field scanner is designed to perform multiple functions: it scans the light-field data, generates the appropriate laser beam patterns, and works compatibility with existing light-field generator hardware. This multi-functionality reduces the need for separate dedicated components, thereby managing system complexity.
3Manufacturing precision
If laser beam is collimated into telecentric light, then the light field quality is improved for resolving VAC, but the device complexity increases due to additional optical components
Solution Approach 1:
The collimator serves as a necessary intermediary optical component that transforms the laser beam into telecentric light. While it adds a component, it is a relatively simple and well-understood optical element that achieves the desired light field quality without requiring complex multi-element assemblies.
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 light-field scanner effectively generates sub-light-field images using laser beams, resolving the VAC issue and enhancing the visual experience by providing realistic and immersive viewing.
Implementation Method 1
the collimator is connected to the light-field scanner to collimate laser beam into telecentric light
Data Source
AI summary
The present invention provides a light-field scanner for light-field display that integrates a light-field buffer, a laser-beam scanner, and a collimator, all within the scanner to produce telecentric light. The present invention may further comprise a compander for beam adjustment to ensure compatibility with various light-field generators.