Autostereoscopic Display with Multi-Depth Lenticular Arrays
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Solution Overview
Problem
Existing autostereoscopic display devices sacrifice horizontal resolution to achieve significant depth perception, leading to a reduction in viewing area and unsuitability for applications like text displays where close viewing distances are necessary.
Innovation Solution
An autostereoscopic display device with multiple arrays of light output directing elements, each controllable to provide different three-dimensional display modes by altering their refractive index using electro-optic materials, allowing for varying amounts of perceived depth and resolution, enabling high resolution for close-range viewing and deep perception for distant viewing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the distance between display panel pixels and lenticular elements is increased to provide large perceived depth, then the amount of perceived depth is improved, but the viewing area becomes small and viewing distance becomes excessively large
Solution Approach 1:
The patent divides the single lenticular sheet into multiple arrays of light output directing elements arranged in series at different depths. Each array can be independently controlled to provide different light output directing functions, enabling the system to segment the depth perception function across multiple planes rather than relying on a single distant array
Solution Approach 2:
The patent makes the lenticular arrays dynamically controllable through electro-optic materials that can change their refractive index in response to electrical signals. This allows the system to dynamically switch between different arrays to provide different light output directing functions, adapting the perceived depth and viewing characteristics based on the display mode required
2Device complexity
If a single lenticular sheet is used to provide stereoscopic views, then the device structure is simple, but the horizontal resolution is reduced due to the need to accommodate multiple view angles
Solution Approach 1:
The patent segments the light output directing function across multiple arrays positioned at different depths, with each array responsible for specific view angles. This segmentation allows each array to be optimized for its specific function while collectively providing comprehensive stereoscopic coverage without compromising horizontal resolution
Solution Approach 2:
The patent adds the depth dimension by arranging lenticular arrays in series at different distances from the display panel. This third dimension (depth) allows the system to differentiate between multiple view angles without affecting the horizontal resolution, as each array operates independently in its depth plane
3Adaptability or versatility
If multiple arrays of light output directing elements are used to provide different three-dimensional display modes, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The patent creates a multi-functional system where multiple arrays of light output directing elements can be selectively activated to provide different three-dimensional display modes. Each array serves a universal purpose of directing light, but their different positions and controllable properties enable them to fulfill different display requirements, from close-range high-resolution viewing to distant deep-perception viewing
Solution Approach 2:
The patent utilizes electro-optic materials that can change their refractive index in response to electrical parameters. By controlling the electrical parameters applied to different arrays, the system can dynamically adjust the light output directing function of each array, enabling versatile display modes without requiring physically different components for each function
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 device offers multiple three-dimensional display modes with adjustable depth and resolution, optimizing performance for both text displays and larger viewing distances without the resolution penalty of traditional systems.
Implementation Method 1
Each array may be controllable to provide the light output directing function by applying an electrical potential to the electro-optic material to alter its refractive index
Data Source
AI summary
An autostereoscopic display device comprises: a display panel having an array of display pixels for producing a display, the pixels being arranged in rows and columns; and at least two arrays of light output directing elements, the arrays being arranged in series over the display panel at different depths, each array being controllable to direct the light output from respective groups of pixels in different directions to enable a stereoscopic image to be perceived. The device is operable to selectively control any one of the arrays to provide the light output directing function, thereby providing respective first and second three dimensional display modes having different amounts of perceived depth.