Flash LED Sensor Layout for Stable Color Correction
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Solution Overview
Problem
Existing camera modules with integrated flash LED and optical sensors face challenges in securing design freedom and maintaining stable light reception for accurate color correction and flicker removal, particularly in mobile devices.
Innovation Solution
A flash LED package with optical sensors is designed, featuring a circuit board with a flash LED device and multiple optical sensors arranged symmetrically around it to detect different wavelengths, along with an IC chip to process sensor signals, ensuring balanced light reception and minimizing distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If optical sensors are integrated with flash LED module, then design freedom for mobile devices is improved, but light receiving stability for color correction deteriorates
Solution Approach 1:
The patent applies asymmetry by strategically positioning optical sensors at specific locations around the flash LED device rather than symmetric distribution. The sensors are placed at predetermined positions that optimize their ability to detect ambient light while avoiding direct exposure to flash LED emissions, thereby maintaining light receiving stability while achieving compact integration
Solution Approach 2:
The patent introduces an intermediary approach by separating the optical sensor detection function from direct proximity to the flash LED. Sensors are positioned to detect ambient light through indirect paths or at angles that prevent direct flash interference, acting as intermediaries between the flash system and the light detection function
2Measurement precision
If multiple optical sensors are arranged around flash LED device, then color correction accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the optical sensing function into multiple specialized sensors positioned at different locations around the flash LED device. Each sensor targets specific wavelength ranges or spatial directions, allowing for precise color correction through segmented spectral analysis while maintaining manageable system complexity through modular sensor placement
Solution Approach 2:
The patent implements local quality by assigning different detection characteristics to sensors at different positions. Sensors are configured with specific spectral sensitivities and angular orientations appropriate to their local position, optimizing each sensor's performance for its specific location while collectively achieving comprehensive color correction
3Volume of moving object
If optical sensors are positioned adjacent to flash LED device, then compact integration is improved, but light distortion increases
Solution Approach 1:
The patent applies dimensionality change by transitioning from a planar arrangement to a three-dimensional spatial configuration. Optical sensors are positioned at elevated positions or at angular orientations relative to the flash LED device, creating vertical and angular separation that reduces direct light interference while maintaining compact footprint. This spatial dimensioning allows compact integration without sacrificing light reception accuracy
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 effectively corrects color shifts and removes optical flicker by symmetrically arranging sensors to maintain consistent field of view, enhancing camera image quality in various environments.
Implementation Method 1
first and third optical sensors arranged to be adjacent to a first side of the flash LED device on the upper surface of the circuit board and configured to detect light of a first wavelength and light of a second wavelength, respectively
Data Source
AI summary
A flash light emitting diode (LED) package includes a circuit board, a flash LED device disposed on an upper surface of the circuit board n, first and third optical sensors arranged to be adjacent to a first side of the flash LED device on the upper surface of the circuit board and configured to detect light of a first wavelength and light of a second wavelength, respectively, second and fourth optical sensors arranged to be adjacent to a second side of the flash LED device on the upper surface of the circuit board and configured to detect light of the first wavelength and light of the second wavelength, respectively, and an integrated circuit (IC) chip disposed to face a third side between the first and second sides of the flash LED device on the upper surface of the circuit board.