Illuminated mirror device and illumination control method thereof
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Solution Overview
Problem
Conventional illuminated mirror devices fail to provide precise illumination of specific facial areas when a user turns their face, leading to dazzling and inadequate lighting of desired parts.
Innovation Solution
An illuminated mirror device with a light-emitting part divided into regions, controlled by an image sensor and control circuit to adjust luminance distribution based on the user's face direction, ensuring appropriate illumination of desired areas while preventing glare.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If illumination is given simply toward the front of the mirror surface, then the structure is simple, but when the user turns the face, illumination light enters the user's eye causing dazzling and the desired facial area cannot be illuminated precisely
Solution Approach 1:
The light-emitting part is divided into multiple regions (first light-emitting region and second light-emitting region) that can be independently controlled. This segmentation allows different regions to provide illumination for different facial areas, enabling precise illumination control when the user turns their face while maintaining manageable system complexity.
Solution Approach 2:
The illumination system dynamically adjusts which light-emitting regions are activated based on the detected face direction. The control circuit changes the illumination pattern in real-time according to user movement, providing precise illumination without dazzling while adapting to different usage scenarios.
2Illumination intensity
If the irradiation direction is adjusted to follow the user, then the user's desired facial area can be illuminated, but illumination light may still enter the user's eye causing dazzling
Solution Approach 1:
Different regions of the light-emitting part provide different illumination qualities based on the detected face direction. When the user turns their face, only the appropriate region is activated to illuminate the desired facial area, while other regions remain off to prevent light from entering the user's eye and causing dazzling.
Solution Approach 2:
The determination part detects the user's face direction and provides feedback to the control circuit, which then adjusts the illumination pattern accordingly. This closed-loop control ensures that illumination is provided precisely where needed while avoiding the harmful effect of light entering the user's eye.
3Illumination intensity
If a light-emitting part with angle adjusting actuator is used, then irradiation direction can be controlled, but the device complexity and cost increase
Solution Approach 1:
The patent replaces the mechanical angle-adjusting actuator system with an electronic control system that uses a determination part to detect face direction and a control circuit to selectively activate different light-emitting regions. This substitution eliminates complex mechanical components while achieving the same irradiation direction control function through electronic means.
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 device effectively illuminates the desired facial area without dazzling the user, providing clear visibility even when the face is turned, by dynamically adjusting the luminance distribution of the light-emitting regions.
Implementation Method 1
a light-emitting part (14) surrounding the mirror part (13) in a frame shape
Data Source
Figure 1~3
Figure 4~5
Figure 6(a)~8(b)
AI summary
Provided is an illuminated mirror device including: a mirror; a light-emitting part for illumination disposed near the mirror; and driving means for driving the light-emitting part, and detection means for detecting a direction of a face of a person in front of the mirror with respect to the mirror, wherein the driving means controls an emission luminance distribution on a light-emitting surface of the light-emitting part on the basis of the face direction detected by the detection means. Also provided is a method for controlling illumination thereof.