Light-Guiding Plate with Convergence Portions for Stereoscopic Display
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing stereoscopic display systems face issues where images appear different to observers depending on their position due to light spread, leading to distortion when viewed from various angles.
Innovation Solution
An optical device with a light-guiding plate and multiple light sources, where light convergence portions are strategically positioned to converge light at specific points, forming images that appear consistent across different viewing angles, using reflection surfaces and lenses to control light direction and intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If light is emitted from a light-guiding plate with spread in the light-guiding direction, then the light can cover a wider viewing area, but the image appears different depending on the observer's position
Solution Approach 1:
The light-guiding plate is segmented into multiple light convergence portions, each responsible for directing light to a specific convergence point. This segmentation allows different regions of the plate to control light direction independently, maintaining image consistency across the viewing area while still covering a wide angle.
Solution Approach 2:
Different regions of the light-guiding plate are given different optical properties through the light convergence portions. Each light convergence portion has optimized optical characteristics for its specific location, ensuring that light is directed appropriately for that region while maintaining overall image consistency across the entire viewing area.
2Manufacturing precision
If multiple light convergence portions are provided at different positions along the light-guiding direction, then image consistency is improved, but the device complexity increases
Solution Approach 1:
Multiple light convergence portions are merged into a single integrated light-guiding plate structure. Rather than using separate components for each light convergence portion, they are combined into one monolithic plate with continuously varying optical properties, reducing assembly complexity while maintaining image consistency.
Solution Approach 2:
The light-guiding plate serves multiple functions simultaneously: it guides light from the light source, creates multiple convergence points, and controls light direction for different viewing angles. This multi-functionality eliminates the need for separate components, reducing overall device complexity while achieving image consistency.
3Ease of operation
If reflection surfaces are used to control light direction, then light emission in specific directions is achieved, but the manufacturing precision of reflection surface angles is required
Solution Approach 1:
Instead of requiring precise control of reflection surface angles, the invention changes the approach by using refraction and total internal reflection principles where the light convergence portions inherently guide light at the desired angles through their geometric design. This parameter change from angle precision to geometric configuration simplifies manufacturing while maintaining light direction control.
Solution Approach 2:
The light convergence portions are designed to automatically guide light in the correct directions through their inherent optical structure. The geometry of each light convergence portion self-determines the light direction based on the convergence point location, eliminating the need for precise external adjustment or high-precision angle manufacturing.
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 ensures that stereoscopic images are projected consistently and without distortion, maintaining image quality and brightness across various observer positions, enhancing the viewing experience.
Implementation Method 1
a light-guiding plate that guides light emitted from the light sources in a plane parallel to an emission surface that emits light
Implementation Method 2
optical surfaces that cause light to be emitted from the emission surface in directions in which the light substantially converges at one convergence point in a space, or substantially scatters from one convergence point in the space
Implementation Method 3
The optical surfaces of the plurality of first light convergence portions may be reflection surfaces that reflect light that is received by the first light convergence portions
Data Source
AI summary
An optical device includes one or more light sources and a light-guiding plate that guides light emitted from the light sources in a plane parallel to an emission surface that emits light. The light-guiding plate has light convergence portions that receive guided light and each have optical surfaces that cause light to be emitted from the emission surface in directions in which the light substantially converges at or scatters from one convergence point. The convergence points for the light convergence portions are different from each other. An image is formed on an emission surface side by a collection of the convergence points. First light convergence portions positioned differently from each other along a light-guiding direction of the light-guiding plate cause light to be emitted from the emission surface in different directions in which the light substantially converges at or scatters from the same first convergence point among the convergence points.