Laser Surface Texturing for Precise Microfeatures and Optical Effects
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Mechanical cutting and drilling methods face difficulties in forming small, precise features with specific textures that alter optical properties without being visually detectable, and they struggle to create partial features adjacent to full features without changing tools.
Innovation Solution
The use of laser-based processes for forming geometric, color, and surface finish elements on a surface, allowing for the creation of precise features, including partial shapes, by ablating, vaporizing, or melting material, and altering surface properties to achieve desired aesthetic and tactile effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If mechanical cutting or drilling is used to form small features, then the manufacturing process is simple, but the manufacturing precision deteriorates
Solution Approach 1:
The patent replaces mechanical cutting and drilling operations with laser-based processes. The laser beam delivers energy to the workpiece material, causing ablation, vaporization, or melting without mechanical contact. This substitution enables precise formation of small features (e.g., 10-100 micrometer scale) while maintaining manufacturing simplicity through a non-contact, tool-free process.
Solution Approach 2:
The patent utilizes controllable laser parameters (power, pulse duration, wavelength, scan speed) to precisely control feature formation. By adjusting these parameters, the process can form features of varying sizes with high precision, from visually detectable textures to sub-visual features that alter optical properties without being seen by the human eye.
2Ease of manufacture
If mechanical texturing operations are used to form small features, then the process is straightforward, but the ability to form visually undetectable features deteriorates
Solution Approach 1:
The patent replaces mechanical texturing bits with laser-based texturing. The laser can form features at the micro and nano scale that are below the resolution threshold of human vision (typically <0.1mm), yet these features collectively alter the optical properties of the surface to produce visible aesthetic effects. This enables control over feature detectability that mechanical operations cannot achieve.
Solution Approach 2:
The patent creates surfaces with localized feature distributions that control light interaction at different scales. Individual features may be sub-visual, but their collective arrangement produces macroscopic optical effects such as iridescence, matte finishes, or structured reflections, achieving both visual aesthetic quality and tactile functionality.
3Manufacturing precision
If specially-shaped bits are used to form texture features, then the feature shape is controlled, but the adaptability to form partial features deteriorates
Solution Approach 1:
The patent replaces physical cutting bits with a laser beam that can be dynamically controlled through software. This enables the formation of any feature shape or size without physical tool changes. The laser can form complete features, partial features, or gradients of feature density across the surface, providing full adaptability while maintaining precise shape control through parameter adjustment.
Solution Approach 2:
The patent employs dynamic control of laser parameters (power, speed, pulse frequency) during the texturing process. This allows real-time adjustment of feature formation to create partial features adjacent to full features, or gradients of texture intensity, without changing any physical components. The process adapts to complex geometries and varying design requirements through software-controlled parameter modulation.
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 formation of intricate patterns and features that are visually and tactically distinct, improving the cosmetic and functional properties of surfaces, such as enhancing grip and optical properties, while allowing for precise control and flexibility in feature formation on complex geometries.
Implementation Method 1
The feature may include a geometric element that is formed into the surface and is formed using a first laser-based process... The geometric element is formed using a laser ablation process
Implementation Method 2
allowing for the creation of precise features, including partial shapes, by ablating, vaporizing, or melting material
Implementation Method 3
allowing for the creation of precise features, including partial shapes, by ablating, vaporizing, or melting material
Implementation Method 4
The color element may be formed using a second laser-based process... the color element is formed using one of a black-marking or white-marking process
Data Source
AI summary
Embodiments are directed to laser-based processes for forming features on the surface of a part. The feature may include a geometric element, a color element, and/or a surface finish element. In some cases, the laser-formed features are formed as a pattern of textured features that produce an aesthetic and/or tactile effect on the surface of the part. In some cases, the texture features may be sufficiently small that they may not be discerned by the unaided human eye. Also, in some cases, a multiple laser-based processes are combined to form a single feature or a finished part having a specific aesthetic and/or tactile effect.