Stereo Display Panel Light-Redirecting Structure for Flat Virtual Images
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Solution Overview
Problem
Existing flat virtual display panels require thick and heavy positive lenses, which cause optical aberrations and discomfort when viewing, making it inconvenient to watch virtual images at close distances.
Innovation Solution
A stereo display panel using a collimated light display structure with a light-redirecting structure composed of right-angle prisms, which deflects collimated light beams to create left-eye and right-eye virtual images, eliminating the need for positive lenses and allowing for closer viewing distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If positive lenses are used to achieve flat virtual display, then virtual image can be displayed, but the device becomes thick and heavy causing discomfort
Solution Approach 1:
The patent extracts and removes the positive lens component from the display system. Instead of using a single thick positive lens, the invention uses a collimated light display structure combined with a light-redirecting structure that can be integrated directly into the display panel, eliminating the need for separate lens components and reducing overall device weight.
Solution Approach 2:
The patent replaces the mechanical optical lens system with a light-redirecting structure that uses refraction and reflection principles integrated into the display panel itself. This substitution eliminates the need for separate lens components, reducing weight while maintaining the virtual image display function.
2Reliability
If positive lenses are used to achieve flat virtual display, then virtual image can be displayed, but optical aberration is introduced causing discomfort
Solution Approach 1:
The patent segments the light path into multiple controlled stages: collimated light generation from the display structure and directed redirection through the light-redirecting structure. This segmentation allows precise control over light propagation, eliminating optical aberrations while maintaining virtual image quality.
Solution Approach 2:
The light-redirecting structure is designed with specific local optical properties that match the requirements of different display regions. By optimizing the refraction and reflection characteristics at each location, the patent eliminates optical aberrations while maintaining accurate virtual image formation.
3Reliability
If positive lenses are used to achieve flat virtual display, then virtual image can be displayed, but viewing distance must be large
Solution Approach 1:
The patent changes the optical dimension by using a collimated light display structure that emits light in a parallel beam direction rather than diverging like traditional lenses. This dimensional change in light propagation allows the virtual image to be positioned at various distances, enabling close viewing without optical aberrations.
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 enables a thinner and more comfortable display device that achieves a stereo visual effect by positioning virtual images further away from the viewer's eyes, reducing eye strain and improving viewing convenience.
Implementation Method 1
a light-redirecting structure disposed on a light exit surface of the collimated light display structure. The light-redirecting structure may comprise: a first portion corresponding to the first display region and configured to deflect a collimated light beam exiting from the first display region towards a predetermined left-eye viewing position
Implementation Method 2
the light-redirecting structure may comprise a plurality of right angle prisms arranged into an array, each of the physical pixels corresponds to at least one of the plurality of right angle prisms
Data Source
AI summary
A stereo display panel is disclosed. The stereo display panel has: a collimated light display structure having first and second display regions configured to display left-eye and right-eye images respectively; and a light-redirecting structure disposed on a light exit surface of the collimated light display structure. The light-redirecting structure has a first portion and a second portion to deflect collimated light beams exiting from the first and second display regions towards predetermined left-eye viewing position and right-eye viewing position respectively, such that left-eye and right-eye virtual images seen by left and right eyes are located at a light incidence side of the collimated light display structure. A stereo display device having the stereo display panel is also disclosed.