Reflective Light Channel Layout for Directional Optoelectronics
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Solution Overview
Problem
Existing optoelectronic devices lack directivity in light detection and emission, which is essential for applications like sun position sensors and directional light emitters within motor vehicles, where precise light management is required.
Innovation Solution
The optoelectronic device incorporates a light channel with a reflective inner wall that directs light onto a semiconductor component's active surface, allowing for controlled light detection or emission by guiding light through reflections, and can be designed with multiple channels for enhanced directional sensitivity and emission characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a light channel with reflective inner wall is introduced to achieve directivity, then light detection and emission directivity are improved, but device complexity increases
Solution Approach 1:
The light channel is integrated into the carrier structure, with the reflective inner wall forming part of the carrier's architecture. This nesting approach allows the light guiding function to be embedded within the existing device structure, achieving directivity without adding separate complex components.
Solution Approach 2:
The reflective inner wall acts as an intermediary element that mediates between the semiconductor component and the external light environment. By introducing this reflective surface, light from specific angular ranges is redirected onto the light-active surface, achieving directional sensitivity without requiring complex optical systems.
2Measurement precision
If the light channel cavity is made larger to improve light guidance, then light detection sensitivity is improved, but volume of the device increases
Solution Approach 1:
The reflective inner wall is applied selectively to specific sections of the light channel cavity where light redirection is most effective. This localized approach maximizes the light guidance function while minimizing the volume required, as the reflective coating is only needed in critical areas rather than the entire cavity.
Solution Approach 2:
The reflectivity parameter of the inner wall is optimized to achieve high light guidance efficiency with minimal cavity volume. By adjusting the reflectivity characteristics and the angular geometry of the light channel, the device achieves improved light detection sensitivity without proportionally increasing volume.
3Adaptability or versatility
If multiple light channels are added to enhance directional sensitivity, then adaptability for different detection directions is improved, but device complexity increases
Solution Approach 1:
The device is segmented into multiple light channels, each with its own reflective inner wall and opening oriented in different directions. This segmentation allows independent optimization of each channel for specific detection directions, achieving comprehensive angular coverage while maintaining modular simplicity in each individual channel design.
Solution Approach 2:
Each light channel is designed as a universal module that can detect light from a specific angular range. By replicating and orienting these universal modules in different directions, the device achieves multi-directional detection capability without requiring fundamentally different designs for each detection direction.
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
This design achieves improved light detection and emission directivity, enabling precise light management and position sensing, such as determining the sun's location within a vehicle, with high reflectivity and compact component dimensions suitable for surface mount technology.
Implementation Method 1
at least a section of the inner wall or the entire inner wall is designed reflective... light can be guided along the direction of extension of the light channel by the reflective inner wall or by the reflective section of the inner wall, in particular by one or more reflections
Data Source
AI summary
In an embodiment, an optoelectronic device includes a carrier, at least one optoelectronic semiconductor component arranged on an upper side of the carrier and at least one light channel associated with the optoelectronic semiconductor component which extends between a first end of the light channel which is distant from a light-active surface of the semiconductor component and which includes an opening into the outer space and a second end of the light channel including an opening directed towards the light-active surface of the semiconductor component, wherein the at least one light channel extends between its respective first and second ends in a non-rectilinear manner, wherein the light channel includes a cavity extending between the two ends, wherein an inner wall surrounds the cavity, and wherein at least a section of the inner wall is reflective.