Reflective-Refractive Diffuser for Compact Beam Shaping
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Solution Overview
Problem
Existing reflective diffusers lack the capability to combine both reflection and refraction, limiting their ability to achieve certain performance features typically requiring multiple surfaces when used in transmission mode.
Innovation Solution
A diffuser incorporating a substrate with a reflective layer and a refractive layer having an index of refraction greater than 1, which combines reflective and refractive properties to shape incoming illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single scattering surface is used in reflective diffusers, then the structure is simple and easy to manufacture, but the ability to achieve certain performance features is limited
Solution Approach 1:
The patent combines a reflective layer and a refractive layer into a single integrated diffuser structure. The reflective layer is positioned at the back surface of the substrate while the refractive layer is formed at the front surface, allowing both reflection and refraction to occur within one component. This merging enables the diffuser to achieve performance features typically requiring multiple separate surfaces while maintaining manufacturing simplicity.
Solution Approach 2:
The diffuser is designed to perform multiple functions simultaneously: the reflective layer provides reflection to redirect incident light, while the refractive layer provides refraction to shape and diffuse the light. This multi-functionality allows a single component to achieve performance features that would traditionally require separate reflective and refractive elements or multiple surfaces.
2Adaptability or versatility
If multiple surfaces are used to achieve certain performance features, then the performance capabilities are improved, but the system layout becomes less compact
Solution Approach 1:
By merging the reflective and refractive functions into a single diffuser component with layers positioned at opposite surfaces of the substrate, the patent eliminates the need for multiple separate surfaces or components. This integration maintains compact system layout while achieving the performance features of multi-surface designs.
3Volume of moving object
If a reflective layer is used to redirect incident beams, then the optical path can be folded to make systems compact, but absorption losses occur
Solution Approach 1:
The patent employs a composite structure combining a reflective layer and a refractive layer. The reflective layer provides the necessary reflection for compact optical path folding, while the refractive layer helps manage light propagation and reduce absorption losses through controlled refraction. This composite approach maintains system compactness while mitigating energy losses.
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 diffuser achieves enhanced beam shaping capabilities by integrating reflection and refraction, allowing for compact system layouts and improved optical performance.
Implementation Method 1
A single scattering surface is produced with a highly reflective material so that an incident beam is redirected upon reflection from the various microstructures that characterize the diffuser surface.
Implementation Method 2
a refractive layer, in which the refractive layer has an index of refraction n>1
Data Source
AI summary
A diffuser including a substrate having a first surface and a second surface opposite the first surface; a reflective layer, and a refractive layer, in which the refractive layer has an index of refraction n>1 is disclosed. A system and a method of using the system are also disclosed.