Multi-Viewpoint Display Lens for Bright, Low-Noise Images
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Solution Overview
Problem
Existing display apparatuses face challenges in providing different images to multiple viewpoints without compromising image quality, brightness, and expanding the viewing area.
Innovation Solution
A display apparatus is designed with a light source array and a multi-viewpoint lens that includes refractive and reflective portions to refract and reflect light to different viewpoints, utilizing an optical sheet to control light ranges and angles, enhancing image separation and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a multi-viewpoint lens is used to provide different images to multiple viewpoints, then the viewing area is expanded, but image noise increases and image quality deteriorates
Solution Approach 1:
The multi-viewpoint lens is divided into multiple lens units, each corresponding to a specific viewpoint. Each lens unit independently directs light from corresponding light sources to its designated viewpoint, preventing light mixing and reducing image noise while maintaining expanded viewing area
Solution Approach 2:
Different regions of the light source array are assigned to different lens units based on their spatial relationships. Each lens unit has optimized optical properties for its specific viewpoint, ensuring high image quality without cross-contamination from other viewpoints
2Adaptability or versatility
If light is refracted to multiple viewpoints using a multi-viewpoint lens, then different images are provided to multiple viewpoints, but brightness decreases
Solution Approach 1:
Light sources are pre-positioned and pre-configured to emit light in specific directions toward their corresponding lens units. This preliminary arrangement ensures that each lens unit receives sufficient concentrated light, maintaining brightness while achieving multi-viewpoint capability
Solution Approach 2:
Multiple identical light sources are arranged to create duplicate light paths for different viewpoints. Each light source-copy pair with its corresponding lens unit maintains the same brightness characteristics, providing consistent illumination across all viewpoints
3Adaptability or versatility
If a light source array with multiple light sources is used to provide images to multiple viewpoints, then the multi-viewpoint capability is enhanced, but the device complexity increases
Solution Approach 1:
The multi-viewpoint lens serves multiple functions simultaneously: it acts as both a light guiding element and a viewpoint separation mechanism. Each lens unit handles both the structural positioning and optical directing for its corresponding viewpoint, reducing the need for additional separate components
Solution Approach 2:
The light source array and multi-viewpoint lens are integrated into a unified structure where light sources are positioned in direct correspondence with lens units. This merging eliminates the need for separate light guiding mechanisms and simplifies the overall device architecture while maintaining enhanced multi-viewpoint 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 effectively provides multiple images to various viewpoints while maintaining brightness and expanding the viewing area, reducing image noise and improving overall image quality.
Implementation Method 1
a refractive portion configured to refract light emitted from the first light source to the first viewpoint
Implementation Method 2
a reflective portion adjacent to the refractive portion in the second direction, the reflective portion being configured to reflect light emitted from the second light source to the second viewpoint
Data Source
AI summary
Provided is a display apparatus including a light source array configured to emit light in a first direction, and a multi-viewpoint lens adjacent to the light source array in the first direction, wherein the light source array includes a first light source configured to emit light to provide an image to a first viewpoint, and a second light source adjacent to the first light source in a second direction different from the first direction, the second light source being configured to emit light to provide an image to a second viewpoint adjacent to the first viewpoint, and wherein the multi-viewpoint lens includes a refractive portion configured to refract light emitted from the first light source to the first viewpoint, and a reflective portion adjacent to the refractive portion in the second direction, the reflective portion being configured to reflect light emitted from the second light source to the second viewpoint.