Auto-stereoscopic Display with Lenticules and Light Filters
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Solution Overview
Problem
Existing auto-stereoscopic displays require precise registration between image-separating materials and pixels, which is costly and cumbersome, and can inhibit the display's ability to provide 3D images effectively.
Innovation Solution
A display system featuring a lenticular array affixed to a screen substrate with elongated light filters that pass specific polarized light orientations, eliminating the need for precise registration by using multiple projectors to emit light waves of different orientations, which are then refracted by the lenticules to direct stereoscopic images to each eye without glasses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If precise registration between lenticular array and pixels is implemented, then auto-stereoscopic image quality is improved, but manufacturing cost and complexity increase
Solution Approach 1:
The patent introduces light filters as an intermediary element between the light source and the lenticular array. These filters pre-separate light into different orientations before it reaches the lenticular array, eliminating the need for precise registration between the array and pixels. The light filters act as a mediator that simplifies the overall system alignment requirements.
Solution Approach 2:
The patent replaces the mechanical precision alignment system with an optical filtering system. Instead of relying on mechanical precision to align pixels with lenticules, the system uses optical filters to separate light orientations, substituting a mechanical alignment problem with an optical solution that is easier to manufacture.
2Manufacturing precision
If precise registration between lenticular array and pixels is implemented, then auto-stereoscopic image quality is improved, but production cost increases
Solution Approach 1:
The light filters serve as an intermediary that reduces manufacturing costs by eliminating the need for expensive precision alignment equipment and processes. The filters can be manufactured and positioned independently, reducing the overall manufacturing complexity and cost.
Solution Approach 2:
The patent segments the light separation function into two independent parts: light filters for orientation separation and lenticular array for directional refraction. This segmentation allows each component to be manufactured separately with lower precision requirements, reducing overall manufacturing cost.
3Reliability
If glasses are used to channel separate images to eyes, then 3D image separation is achieved, but viewer comfort and accessibility decrease
Solution Approach 1:
The display system performs the image separation function itself through the combination of light filters and lenticular array, eliminating the need for external glasses. The display 'serves itself' by incorporating the separation mechanism directly into the display structure, providing glasses-free 3D viewing.
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 the creation of 3D images without the need for precise registration, simplifying the display system and reducing costs while providing a comfortable viewing experience without the use of glasses.
Implementation Method 1
the corresponding lenticule refracts the first light waves in the direction of a viewer's eye
Implementation Method 2
The first elongated light filters pass light waves that have the first orientation and the second elongated light filters pass light waves that have the second orientation
Data Source
AI summary
An auto-stereoscopic display which includes a screen substrate having a first face and a second face. A lenticular array having a plurality of lenticules extending in a first direction and a second direction is affixed to the first face. A plurality of first elongated light filters is affixed to the second face. The first elongated light filters extend parallel to the plurality of lenticules and are adapted to pass light waves having a first orientation. A plurality of second elongated light filters extending parallel to the plurality of lenticules is affixed to the second face and adapted to pass light waves having a second orientation.