Optical Waveguide Marking Material for Multi-Color Image Display
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Solution Overview
Problem
Conventional optical waveguides using engraving for image display are limited by monochromatic images, inability to produce shading or halftone patterns, and non-reusability for different images, as they rely on specific color illumination and laser engraving which restricts complexity and flexibility.
Innovation Solution
Printing marking materials with light scattering properties directly onto optical waveguides, allowing for multi-color and variable shading images by controlling light refraction and scattering, while enabling the waveguide to be reused by removing the marking materials without damaging the surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If laser engraving is used to create images on optical waveguides, then images can be displayed through light refraction, but the images are limited to line art without shading or density levels
Solution Approach 1:
The patent replaces the mechanical laser engraving process with a printing process that deposits marking materials onto the optical waveguide surface. This substitution enables the creation of halftone patterns and shaded images that cannot be achieved through line-by-line laser engraving, while maintaining ease of manufacture through conventional printing techniques.
Solution Approach 2:
The patent applies different marking materials with varying light scattering properties to different regions of the optical waveguide. By controlling the distribution and density of scattering particles in specific areas, the invention creates variable shading and density levels across the image, transforming the uniform line art output into a visually rich halftone image.
2Adaptability or versatility
If multiple pieces of acrylic are used to display multi-color images, then each color can be illuminated with its specific light source, but the system becomes complicated requiring several etched optical waveguides and illumination sources
Solution Approach 1:
The patent merges multiple color illumination capabilities into a single optical waveguide by depositing different colored marking materials on the same surface. Instead of requiring separate waveguides for each color, the invention combines multiple color layers in one substrate, dramatically reducing system complexity while maintaining full multi-color display capability.
Solution Approach 2:
The optical waveguide is designed to perform multiple functions simultaneously: it can display multiple colors, support halftone patterns, and be reused for different images. The marking materials are engineered to work together in a single integrated system, allowing one waveguide to replace what previously required multiple specialized components.
3Reliability
If images are engraved on optical waveguides, then the images can be displayed, but the optical waveguide cannot be re-used for other images
Solution Approach 1:
The patent enables the recovery and reuse of the optical waveguide by using removable marking materials that can be cleaned off the surface without damaging the waveguide substrate. This allows the same waveguide to be reused for displaying different images, transforming a single-use engraved system into a reusable platform that maintains reliable image display functionality.
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 multi-color, variable shading images on a single optical waveguide surface, enhancing image complexity and reusability, overcoming the limitations of traditional engraving methods.
Implementation Method 1
total internal reflection can be 'frustrated' on an image-wise basis by engraving marks in the surface of the optical medium (optical waveguide) so that the internally reflecting light partially externally refracts and escapes the optical waveguide
Implementation Method 2
Printing marking materials with light scattering properties directly onto optical waveguides, allowing for multi-color and variable shading images by controlling light refraction and scattering
Implementation Method 3
At the engraved section 11, a portion of the light 25 is frustrated and is refracted out of the optical waveguide as escaped light 27. This refraction at the engraved section 11 causes the light to appear to originate in the engraved image section 11
Data Source
AI summary
A display device component includes an optical waveguide having a surface; a first material formed on a portion of the surface of the optical waveguide; and a second material formed on a portion of the first material. The first material has light scattering properties.