Personal Care Device Mirror Feedback System
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Solution Overview
Problem
Existing personal care devices, such as electric shavers, face challenges in providing effective feedback to users during use, making it difficult to operate them correctly, especially in terms of pressure and movement direction, leading to inefficient shaving experiences.
Innovation Solution
The personal care device emits light signals towards a mirror in front of the user, allowing them to see feedback information such as pressure levels and operation guidance, with a calibration system to adapt to individual user habits, and optional acoustic feedback through motor modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If feedback information is displayed on a conventional display device during shaving, then the user receives operation guidance, but the display may distract the user from the shaving process
Solution Approach 1:
The patent introduces a mirror as an intermediary medium to convey feedback information. Instead of displaying information directly on the shaver handle, the system projects feedback onto a mirror that reflects light back to the user. This intermediary approach allows information delivery without requiring the user's direct attention to the display device, maintaining focus on the shaving task while still providing guidance through the reflected light signals.
2Productivity
If the shaver provides various different operating modes and complex functions, then the shaving efficiency is improved, but it becomes more difficult to operate the shaver correctly
Solution Approach 1:
The patent implements a feedback mechanism that monitors the shaver's operating mode and provides real-time visual guidance to the user through light projections on a mirror. The system detects when the shaver is in different operating modes (such as high-speed or low-speed cutting) and projects corresponding visual cues to guide the user's movements and pressure application. This feedback loop helps users correctly operate complex functions by providing intuitive, context-aware guidance without requiring them to study complex manuals.
3Manufacturing precision
If the working head is pressed against the skin too strongly or held at incorrect orientation, then the shaving quality deteriorates, but it is difficult for users to maintain correct technique
Solution Approach 1:
The patent employs a feedback system that uses sensors to detect the shaver's orientation and pressure applied to the skin. Based on this detection, the system projects visual feedback onto a mirror to guide the user in maintaining correct technique. When the shaver is held at the correct angle or applied with appropriate pressure, the feedback light provides confirmation; when technique is incorrect, the feedback guides correction. This continuous feedback loop enables users to maintain proper shaving technique without requiring extensive training or constant self-monitoring.
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 solution enhances user perception of feedback information during shaving, improving handling and guidance, ensuring intuitive and effective use across different operating habits without distracting from the shaving process.
Implementation Method 1
the feedback indicator includes a light emitter configured to emit light from an end portion of the elongated handle and/or from the working head
Data Source
AI summary
A skin treatment device such as an electric shaver, having a housing forming an elongated handle for manually moving the device along a body surface, a working head attached to the handle for effecting a treatment to the body surface, at least one detector for detecting at least one treatment parameter of the device, and a feedback indicator for indicating feedback information based on the detected treatment parameter to a user during the personal care treatment. More particularly, such feedback indicator includes a light emitter configured to emit light signals onto a mirror in front of a user.