Functionalized Waveguide Diffractive Coupling for Detector Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Transparent surfaces such as windows and windshields primarily serve to protect against environmental influences while lacking additional optical functionalities, limiting their ability to efficiently direct and process radiation for applications like detection and projection systems.
Innovation Solution
A functionalized waveguide with a partly transparent input coupling region and output coupling region, utilizing diffractive structures like volume holograms, allows for the efficient deflection and transmission of radiation while maintaining transparency, enabling additional optical functionalities like imaging and radiation detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a transparent base body is used for protection only, then transparency is maintained, but additional optical functionality is lacking
Solution Approach 1:
The transparent base body is enhanced with input and output coupling regions that enable multiple optical functions including radiation deflection, guiding, and detection capabilities, transforming a single-function protective element into a multi-functional optical component
Solution Approach 2:
The base body is divided into distinct functional zones: a transparent base body, an input coupling region with diffractive structures for radiation input, and an output coupling region for radiation output, allowing each segment to be optimized for its specific function
2Productivity
If input coupling efficiency is increased, then radiation power reaching output coupling region improves, but transparency of input coupling region decreases
Solution Approach 1:
The input coupling region incorporates diffractive structures with locally optimized properties that enable efficient radiation coupling into the waveguide while maintaining acceptable transparency for normal viewing, with the diffractive efficiency tuned to balance coupling performance and visual transparency
Solution Approach 2:
The diffractive structures are designed to couple only a portion of the incident radiation into the waveguide (partial action), allowing sufficient transparency for normal viewing while directing enough radiation for effective detection, rather than attempting to couple all incident radiation
3Productivity
If diffractive structures are added to the input coupling region, then radiation deflection efficiency improves, but device complexity increases
Solution Approach 1:
The diffractive structures are implemented as planar optical elements that can be manufactured using standard fabrication techniques, replacing complex three-dimensional optical components with two-dimensional patterns that achieve similar or superior performance
Solution Approach 2:
Traditional mechanical or complex optical systems for radiation deflection are replaced with diffractive optical structures that use interference and diffraction phenomena to achieve the same function with simpler, more compact architecture
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 enhances the optical functionality of transparent surfaces by efficiently directing radiation for detection and projection systems without compromising transparency, allowing for improved performance in applications like vehicle windows and display integration.
Implementation Method 1
The partly transparent input coupling region can comprise a diffractive structure used to maintain the transparency of the input coupling region during normal viewing through it
Implementation Method 2
the deflected portion propagates as coupled-in radiation into the base body as far as the output coupling region by means of reflection
Implementation Method 3
The output coupling region can be embodied as partly transparent... The output coupling region can deflect at least one portion of the coupled-in radiation impinging on it, such that the deflected portion emerges from the base body
Data Source
AI summary
A functionalized waveguide for a detector system includes an incoupling region of a main body that deflects only part of the radiation coming from an object to be detected and impinges on the front face such that the deflected part propagates as coupled-in radiation in the main body by reflections up to the decoupling region and impinges on the decoupling region. A decoupling region deflects at least part of the coupled-in radiation impinging thereon such that the deflected part exits the main body via the front or rear face to impinge on the detector system. The extent of the incoupling region in a second direction transverse to the first direction is greater than the extent of the decoupling region in the second direction. In the second direction, the incoupling region has at least two different diffractive incoupling structures which have a different deflection component in the second direction.