Micro-LED Illumination Array With IR Ranging for Pixelated Lighting
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Solution Overview
Problem
Existing portable electronic device flashes struggle to provide high-quality illumination that adapts to varying distances and environments.
Innovation Solution
An illumination device with a light-emitting element array, lens array, infrared light-emitting element array, and control unit that uses micro light-emitting diodes and infrared micro light-emitting diodes for ranging, along with micro light homogenizing elements to provide pixelated and optimized illumination based on distance and location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional flash illumination is used, then the structure is simple, but the illumination quality cannot be adjusted according to target distance
Solution Approach 1:
The illumination device divides the light source into multiple independent micro-LEDs arranged in an array, where each micro-LED can be independently controlled to emit light beams of different intensities and directions. This segmentation enables the system to adapt illumination to different target distances by selectively activating specific micro-LEDs, resolving the contradiction between adaptability and structural simplicity.
Solution Approach 2:
The device employs dynamic control of micro-LED emission through a control unit that adjusts the intensity and activation state of each micro-LED based on detected target distance. This dynamic adjustment capability allows the illumination pattern to change adaptively with target position, achieving distance-specific optimization without requiring multiple fixed configurations.
2Illumination intensity
If multiple light sources are used for distance-based illumination adjustment, then illumination quality improves, but energy consumption increases
Solution Approach 1:
The control unit activates only the specific micro-LEDs needed for the current illumination task based on target distance, rather than illuminating all micro-LEDs uniformly. This local quality approach ensures that energy is concentrated where needed, maintaining high illumination quality for the specific target area while minimizing overall energy consumption by leaving other micro-LEDs inactive.
Solution Approach 2:
The system dynamically changes the emission parameters (intensity, activation state) of individual micro-LEDs based on the detected target distance. By adjusting these parameters in real-time, the device optimizes illumination quality for each specific scenario while minimizing energy consumption by adapting the light output to the actual requirements rather than maintaining constant high-level illumination.
3Stability of the object's composition
If micro light homogenizing elements are added, then illumination uniformity improves, but device complexity increases
Solution Approach 1:
The micro light homogenizing elements are integrated directly with the micro-LED array structure, merging the light emission function and light homogenization function into a unified configuration. This integration achieves illumination uniformity through the combined optical effect of the micro-LED arrangement and homogenizing elements without requiring separate, complex optical systems, thus improving uniformity while limiting the increase in overall device 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
The device achieves high-quality, pixelated illumination by adjusting light intensity and form to suit the target distance, enhancing illumination quality and efficiency.
Implementation Method 1
each light-emitting area includes a plurality of micro light-emitting diodes arranged in an array
Implementation Method 2
The infrared light-emitting element array includes a plurality of infrared micro light-emitting diodes arranged in an array form
Implementation Method 3
After respectively passing through the lenses, the light beams are formed into a plurality of illumination light beams
Data Source
AI summary
The disclosure provides an illumination device including a light-emitting element array, a lens array, an infrared light-emitting element array, at least one light sensing element, and a control unit. The light-emitting element array includes a plurality of micro light-emitting diodes arranged in an array. The lens array includes a plurality of lenses. The infrared light-emitting element array includes a plurality of infrared micro light-emitting diodes arranged in an array form, and the infrared micro light-emitting diodes are respectively configured in the light-emitting element array. Each infrared micro light-emitting diode and the at least one light sensing element are configured to provide a plurality of ranging data. The control unit controls each micro light-emitting diode to generate a plurality of light beams according to the ranging data so as to form a plurality of illumination light beams, and the illumination light beams illuminate a target in a pixelated form.