Biometric Sensor Lens for Smart Watch Wrist Monitoring
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Solution Overview
Problem
Smart watches and smart glasses lack effective biometric sensor features due to their small size, limiting their ability to provide desired functionalities while maintaining a compact design.
Innovation Solution
A user portable apparatus incorporating a biometric sensor system with a light emitter and detector, coupled with a controller and power supply, that emits and detects light to and from the user's wrist, utilizing a lens with opaque and transmissive sections to transmit and receive biometric data, enabling features like pulse oximetry and heart rate monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If biometric sensor features are added to smart watches and smart glasses, then functionality is improved, but device size increases
Solution Approach 1:
The patent combines the light emitter, light detector, and lens into an integrated biometric sensor assembly that can be incorporated into existing smart watch or smart glass devices. This merging of components enables biometric functionality without requiring separate dedicated space for each component, thus adding versatility while minimizing size increase.
Solution Approach 2:
The biometric sensor system is designed to perform multiple functions including heart rate monitoring, blood oxygen saturation measurement, and other physiological measurements using the same basic component structure. This multi-functionality allows a single sensor assembly to provide various biometric features, improving adaptability without proportionally increasing device volume.
2Measurement precision
If a lens is added to transmit light for biometric sensing, then measurement capability is improved, but device complexity increases
Solution Approach 1:
The lens is designed with specific local properties - it has a first region with particular optical characteristics for transmitting light from the emitter to the detector, and may have different regions with different properties for optimizing various measurement functions. This localized optimization improves measurement precision without requiring the entire optical system to be complex.
Solution Approach 2:
The lens acts as an intermediary optical element that facilitates light transmission between the light emitter and light detector. By introducing this intermediate component, the system achieves better measurement capability through improved light guidance and focusing, while the lens itself is a relatively simple component that does not significantly increase overall system 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
Enables effective biometric data collection and wireless communication of health metrics such as heart rate and blood oxygen saturation, enhancing the functionality of smart devices without increasing their size.
Implementation Method 1
The light detector can detect light reflected from the wrist of the user from the first light emitter
Implementation Method 2
The lens can include a first light transmissive section that transmits light from the light emitter to the user and a second light transmissive section separate from the first light transmissive section that transmits light reflected from the user to the light detector
Data Source
AI summary
An apparatus can include a wrist worn device configured to be worn on a wrist of a user. The apparatus can include a controller. The apparatus can include a power supply. The apparatus can include a light emitter that can emit light from a user side of the wrist worn device to a wrist of the user. The apparatus can include a light detector that can detect light reflected from the wrist of the user from the first light emitter and can send a detector signal to the controller. The detector signal can be based on the detected light. The apparatus can include a lens coupled to a user side of the wrist worn device external to the light emitter and light detector. The lens can include an opaque section. The lens can also include light transmissive section that transmits light from the light emitter to the user.