Sensing Package Optical Redirection for Wearable Thickness
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Solution Overview
Problem
Existing wearable devices that detect physical activity and health metrics through light emission and reception face challenges in reducing thickness while maintaining functionality, which affects comfort and usability.
Innovation Solution
A sensing package that includes a carrier with an emitter and a component to change the direction of light, allowing for indirect light emission and reception, reducing the thickness of the device while maintaining effective signal detection through optical control and treatment of light parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If light emitter and receiver are integrated into wearable devices to detect physical activity and health metrics, then functionality is improved, but device thickness increases
Solution Approach 1:
The patent applies dimensionality change by introducing optical components (prism, mirror, or waveguide) that redirect light propagation from a direct linear path to an indirect angular path. This allows the light emitter and receiver to be positioned closer together while maintaining effective detection distance, thereby reducing device thickness without sacrificing functionality.
Solution Approach 2:
The patent uses optical components (prism, mirror, or waveguide) as intermediaries to transfer light between the emitter and receiver. These intermediaries enable the light to change direction and reach the receiver at an angle, allowing for compact integration of emitter and receiver while preserving the detection function.
2Ease of operation
If device thickness is reduced to enhance comfort, then ease of operation is improved, but light detection effectiveness may deteriorate
Solution Approach 1:
The patent resolves this contradiction by changing the spatial dimension of light propagation through optical components. The light is directed at an angle rather than traveling directly, which allows the emitter and receiver to be positioned within a compact thickness while maintaining sufficient detection effectiveness through the angled light path.
Solution Approach 2:
The optical components serve as intermediaries that preserve light detection effectiveness by efficiently transmitting and redirecting light. The prism, mirror, or waveguide ensures that light reaches the receiver with sufficient intensity and accuracy, maintaining detection reliability even in a thin device configuration.
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 flexibility and comfort of wearable devices by reducing thickness and improving usability while maintaining effective light detection and signal processing for health metrics like oxygen saturation and heart rate.
Implementation Method 1
an emitter configured to emit a first light propagating in a first direction
Implementation Method 2
a component configured to change the first light into a second light propagating in a second direction different from the first direction
Implementation Method 3
receiving a third light reflected by the object and propagating in a third direction
Data Source
AI summary
The present disclosure provides a sensing package. The sensing package includes a carrier configured to face an object to be inspected and an emitter disposed adjacent to the carrier. The emitter is configured to emit a first light propagating in a first direction. The sensing package further includes a component configured to change the first light into a second light propagating in a second direction different from the first direction. An optical module and a method for detecting light are also provided.