Vehicle Applique Coating With Diffraction Grating for Iridescence
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Solution Overview
Problem
Existing vehicle appliques lack the ability to create a unique, aesthetically appealing iridescent effect that enhances vehicle aesthetics, as they typically rely on molded plastic components that do not effectively diffract light.
Innovation Solution
A vehicle applique featuring a base structure with a polymeric coating that integrally includes a diffraction grating, manufactured using a mold with selectively nano-engraved patterns, allowing for the creation of a thin diffraction grating that diffracts light and produces an iridescent effect, with the grating thickness ranging from 100 nm to 300 nm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If molded plastic components are formed to resemble jewels, then the vehicle aesthetics are upgraded, but the components lack the ability to effectively diffract light and produce an iridescent effect
Solution Approach 1:
The patent changes the physical parameter of the coating by introducing a diffraction grating structure with specific thickness (100-300 nm) into the polymeric coating. This parameter change enables the coating to diffract light and produce iridescent effects, transforming it from a simple aesthetic cover to an optical functional layer without requiring complex multi-component assemblies
Solution Approach 2:
The patent creates a composite structure by integrating the diffraction grating within the polymeric coating layer. This composite material approach combines the aesthetic properties of molded plastic with the optical diffraction properties of the grating structure, achieving both visual appeal and light-diffraction functionality in a single integrated component
2Illumination intensity
If a diffraction grating is integrated into the polymeric coating, then the iridescent effect and light diffraction are achieved, but the manufacturing process becomes more complex requiring nano-engraving
Solution Approach 1:
The patent applies preliminary action by nano-engraving the diffraction grating pattern onto the mold surface before the injection molding process. This pre-prepared mold ensures that the diffraction grating structure is automatically formed during standard injection molding, eliminating the need for post-manufacturing steps and integrating the complex optical structure into the base manufacturing flow
Solution Approach 2:
The patent replaces complex post-manufacturing mechanical processes with a streamlined injection molding process. By transferring the diffraction grating pattern to the mold and using injection molding to replicate it, the patent substitutes multi-step mechanical assembly and finishing operations with a single-step thermal-forming process, thereby simplifying manufacturing despite the optical complexity
3Illumination intensity
If the diffraction grating thickness is reduced to 100-300 nm, then the iridescent effect is optimized, but the manufacturing precision requirements increase significantly
Solution Approach 1:
The patent uses copying by transferring the diffraction grating pattern from the nano-engraved mold to the polymeric coating during injection molding. This copying process replicates the precise 100-300 nm thickness pattern throughout the entire coating surface, ensuring consistent optical properties and iridescent effects across the component without requiring manual precision control at each location
4Reliability
If a polymeric coating with diffraction grating is used, then the applique achieves durability and scratch resistance, but the manufacturing process requires induction heating and injection molding
Solution Approach 1:
The patent merges multiple functions into a single integrated polymeric coating layer: aesthetic coverage, diffraction grating structure for iridescent effects, and protective durability. This consolidation eliminates the need for separate protective coatings or assemblies, achieving enhanced reliability while using standard injection molding equipment with induction heating 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 provides a vehicle applique with a durable, scratch-resistant, and aesthetically appealing iridescent appearance, enhancing the vehicle's visual appeal by scattering light and revealing patterns only when illuminated, while maintaining durability and longevity.
Implementation Method 1
A diffraction grating is integrally defined by the polymeric coating. The diffraction grating has a thickness in a range of from about 100 nm to about 300 nm.
Implementation Method 2
Iridescent components may offer a unique and attractive viewing experience. The iridescent components may upgrade the aesthetics of a vehicle.
Data Source
AI summary
A vehicle applique includes a base structure and a polymeric coating disposed on the base structure. The polymeric coating at least partially covers an outer surface of the base structure. A diffraction grating is integrally defined by the polymeric coating. The diffraction grating has a thickness in a range of from about 100 nm to about 300 nm.