Proximity Sensor Internal Channeling Section for Close-Range Detection
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Solution Overview
Problem
Conventional proximity sensor devices are susceptible to blind spots when detecting external objects at close proximity, making it difficult to effectively detect objects positioned very close to the sensor.
Innovation Solution
The design incorporates an internal channeling section with specific height dimensions and reflective surfaces to direct light and enable detection of external objects at close proximity by channeling reflected light to the detector, reducing crosstalk and enhancing detection capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional proximity sensor devices are used, then they can detect objects at normal distances, but they are susceptible to blind spots when detecting objects at close proximity
Solution Approach 1:
The optical cavity is segmented into multiple regions including a first aperture for emitting light, a second aperture for receiving reflected light, and an internal channeling section with reflective surfaces. This segmentation allows different portions of the optical path to serve specific functions, enabling detection at close proximity while maintaining proper optical separation between emitter and detector
Solution Approach 2:
The internal channeling section incorporates reflective surfaces with specific optical properties at localized positions within the optical cavity. These reflective surfaces are strategically positioned to redirect light paths, creating localized optical pathways that enable close-proximity detection while preventing direct light leakage between emitter and detector
2Measurement precision
If optical structures are added to direct light, then detection capability is improved, but device complexity increases
Solution Approach 1:
The emitter, detector, and internal channeling section with reflective surfaces are integrated into a single optical cavity structure. This merging of components into one integrated unit simplifies the overall device architecture while maintaining the optical functionality needed for close-proximity detection
Solution Approach 2:
The internal channeling section serves multiple functions simultaneously: it directs light from the emitter to the target, reflects light back to the detector, and prevents direct light leakage between emitter and detector. This multi-functionality reduces the need for separate optical components, thereby reducing device complexity
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 configuration allows for reliable detection of external objects at close proximity, reducing blind spots and maintaining a low noise margin, thereby improving the sensor's accuracy and effectiveness.
Implementation Method 1
The internal channeling section has a first height dimension extending from the bottom end to a top end of the internal channeling section. The internal channeling section is configured to direct light between a first aperture and a second aperture of the optical structure when an external object presents at close proximity
Data Source
AI summary
A proximity sensor device, which may detect the presence of external objects at close proximity is disclosed. The proximity sensor device may comprise an emitter, a detector, a separation wall and an internal channeling section. In one embodiment, the internal channeling section may be configured to direct light from the emitter to the detector when the external object is present at close proximity. In other embodiments, a proximity sensor assembly, an optical structure and an electronic device having similar internal channeling section are disclosed.