Adaptive Flash Illumination Arrays for Zoom-Dependent Scene Lighting
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Solution Overview
Problem
Existing light source modules in camera devices fail to adjust illumination effectively for varying zoom levels, object distances, and different camera modes, leading to inadequate or uneven illumination of scenes.
Innovation Solution
A mobile computing device equipped with a camera arrangement and a light source module featuring an array of illumination elements and a projection lens. A controller determines the optimal illumination pattern and intensity by considering camera modes, zoom levels, object distances, and ambient lighting conditions, adjusting individual illumination elements accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a light source module uses fixed illumination settings, then the device complexity is reduced, but the illumination quality becomes inadequate or uneven across different zoom levels and object distances
Solution Approach 1:
The light source module dynamically adjusts its illumination characteristics by varying the intensity and distribution of light across multiple LED elements based on real-time camera parameters including zoom level, focus distance, and scene depth. This dynamic adaptation enables the system to maintain optimal illumination quality across different shooting conditions without requiring multiple fixed light sources.
Solution Approach 2:
The system changes illumination parameters such as intensity, color temperature, and spatial distribution by adjusting the drive current to individual LED elements. The controller modifies these parameters in response to detected camera settings and scene characteristics, enabling flexible illumination adaptation while using a single light source module.
2Manufacturing precision
If a light source module does not adjust for different camera modes and zoom levels, then the device complexity is reduced, but the illumination uniformity deteriorates
Solution Approach 1:
Different regions of the light source module are controlled independently, with individual LED elements adjusted to provide localized illumination compensation. This allows specific zones to be optimized for different depth planes and camera modes, achieving uniform illumination across the entire field of view while maintaining manageable control complexity through modular element addressing.
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 ensures even and optimal illumination of scenes across different camera modes and zoom levels, improving image quality by minimizing shadows and highlights.
Implementation Method 1
the plurality of illumination elements may be one or more light emitting diodes (LEDs)
Data Source
AI summary
A light source module includes an array of illumination elements and an optional projecting lens. The light source module is configured to receive or generate a control signal for adjusting different ones of the illumination elements to control a light field emitted from the light source module. In some embodiments, the light source module is also configured to adjust the projecting lens responsive to objects in an illuminated scene and a field of view of an imaging device. A controller for a light source module may determine a light field pattern based on various parameters including a field of view of an imaging device, an illumination sensitivity model of the imaging device, depth, ambient illumination and reflectivity of objects, configured illumination priorities including ambient preservation, background illumination and direct/indirect lighting balance, and so forth.