Light Field Display Camera Position Compensation for Thermal Distortion
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Solution Overview
Problem
3D light field displays experience diminished video quality due to thermally induced camera position variations, causing geometric distortion and flickering or blurred images, which existing commercial displays fail to stabilize effectively.
Innovation Solution
Employing low-cost sensors, such as strain gauges and temperature sensors, to measure thermal and strain variations, correlating these measurements with camera motion using machine learning, and applying real-time compensation to maintain precise camera positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If thermal compensation is not applied, then the system structure remains simple, but image quality deteriorates due to camera position variations
Solution Approach 1:
The patent implements a feedback mechanism where sensors continuously monitor thermal and strain conditions in the display structure, and the system dynamically adjusts camera positions based on this feedback to maintain alignment accuracy despite thermal variations
Solution Approach 2:
The patent introduces sensors as intermediary elements that detect thermal and strain conditions, serving as mediators between the thermal environment and the camera positioning system to enable compensation without direct mechanical intervention
2Manufacturing precision
If real-time compensation is implemented, then image quality improves, but computational requirements increase
Solution Approach 1:
The patent performs preliminary characterization of the relationship between thermal/strain conditions and camera position variations during system setup, storing compensation parameters in advance to reduce real-time computational requirements during operation
3Measurement precision
If sensors are added to measure thermal and strain variations, then measurement capability improves, but device complexity increases
Solution Approach 1:
The patent employs sensors that serve multiple functions: detecting both thermal variations and strain conditions with a single integrated sensing system, reducing overall device complexity while maintaining comprehensive measurement capability
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 significantly improves image quality by reducing camera position uncertainty by 5-10 times, ensuring accurate alignment of video feeds and maintaining high-quality 3D imaging despite thermal distortions.
Implementation Method 1
Employing low-cost sensors, such as strain gauges and temperature sensors, to measure thermal and strain variations
Implementation Method 2
Employing low-cost sensors, such as strain gauges and temperature sensors, to measure thermal and strain variations
Implementation Method 3
3D light field displays experience diminished video quality due to thermally induced camera position variations
Data Source
AI summary
Systems and methods are disclosed in which low-cost sensors are mounted onto a 3D light field display to measure variations in strain or temperature. The sensors can be mounted to a common backplate with the cameras to correlate camera motion in response to thermally-induced deformation of the display. Once a correlation between the sensor measurements and camera motion is pre-established, for example, by using machine learning, the resulting system model can be used so that real time measurements of the display can instantly predict changes in camera positions at any given time. Updated camera positions can then be used when combining images to produce a stereoscopic effect.