LED Multi-Function Light Detection for Brightness Control
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Solution Overview
Problem
Conventional electrical devices with lighting modules, such as LCDs, require additional photo-sensors to adjust brightness based on surrounding light intensity, increasing costs and altering device design.
Innovation Solution
Incorporating at least one LED that functions in both indicating and detecting modes to control the brightness of the lighting module, eliminating the need for an additional photo-sensor by using the LED to detect surrounding light intensity and transmit signals to the control unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If an additional photo-sensor is used to detect surrounding light intensity and adjust backlight brightness, then energy saving is achieved, but cost increases and device design is altered
Solution Approach 1:
The LED is designed to perform multiple functions: indicating working state and detecting surrounding light intensity. By making the LED multi-functional, the patent eliminates the need for separate photo-sensors, thereby reducing device complexity and cost while maintaining the energy-saving brightness adjustment capability
Solution Approach 2:
The patent combines the indicating function and light detection function into a single LED component. This merging of functions allows the system to use existing LED infrastructure for dual purposes, avoiding additional components and simplifying the overall device structure
2Difficulty of detecting and measuring
If a photo-sensor is disposed on the exterior of the electrical device, then light detection is enabled, but case design with opening is required and cost increases
Solution Approach 1:
The LED serves itself by detecting surrounding light intensity for its own control purposes. The LED's ability to detect light allows the system to automatically adjust brightness based on environmental conditions without requiring external sensing components or modifications to the case structure
Solution Approach 2:
The exterior LED is utilized for both indication and light detection purposes. This multi-functional use of the existing LED eliminates the need for additional photo-sensors and associated case modifications, simplifying manufacturing while enabling light detection capability
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 reduces costs by omitting the need for an additional photo-sensor while maintaining the ability to adjust brightness effectively, thereby enhancing energy efficiency and maintaining the device's design appearance.
Implementation Method 1
the LED is configured to detect the surrounding light intensity and transmit a detecting signal to the control unit
Data Source
AI summary
A brightness adjustable electrical apparatus is disclosed. The electrical apparatus comprises a lighting module, a control unit and at least one light emitting diode (LED). The control unit is electrically connected to the lighting module for lighting control. The LED is electrically connected to the control unit, wherein the LED has an indicating mode to indicate the working state of the electrical apparatus and a detecting mode to detect the surrounding light intensity.