Flashlight Module Light Field Adjustment for Mobile Photography
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Solution Overview
Problem
Cell phone cameras with slim designs face limitations in flash application due to size and power constraints, leading to the use of LEDs that provide dimmer light compared to xenon lights, necessitating a method to effectively adjust the light field for various environments.
Innovation Solution
A handheld communications device with a flashlight module that includes a detection unit and a control unit to dynamically select lighting configurations based on detected light field attributes, adjusting the light field from centralized to uniform to match environmental requirements for improved photography.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LED is used as flashlight in cell phone camera, then power consumption is reduced, but light intensity becomes dimmer
Solution Approach 1:
The patent implements dynamic adjustment of the flashlight module by detecting light field attributes (such as brightness distribution and scene characteristics) and automatically selecting from multiple lighting configurations. This allows the system to optimize light intensity in real-time based on environmental conditions, thereby compensating for the inherently dimmer output of LEDs while maintaining low power consumption compared to xenon lights.
Solution Approach 2:
The system changes operational parameters by providing multiple lighting configurations with different light field attributes (centralized, uniform, or hybrid light fields). By adjusting which configuration is active based on detected scene requirements, the system optimizes illumination effectiveness without increasing power consumption, resolving the contradiction between LED energy efficiency and sufficient light intensity.
2Adaptability or versatility
If multiple lighting configurations are provided, then adaptability to different environments is improved, but device complexity increases
Solution Approach 1:
The system employs dynamic selection among multiple lighting configurations based on real-time detection of light field attributes. The control unit automatically determines the appropriate configuration by analyzing scene characteristics, providing high adaptability to different environments (indoor, outdoor, close-up, distant objects) without requiring manual intervention or complex mechanical adjustments.
Solution Approach 2:
The flashlight module is designed with multiple lighting configurations that can be selectively activated based on environmental requirements. This multi-functionality allows a single device to handle diverse photography scenarios (indoor with many objects, outdoor with distant objects, different lighting conditions) without requiring separate hardware for each scenario, thereby achieving high adaptability while managing device complexity through software-controlled selection.
Data Source
AI summary
An adjustment method for a flashlight module of a handheld communications device includes following steps: detecting a light field of at least one frame and obtaining at least one attribute; determining whether the at least one attribute satisfies a specific criterion; and selecting a specific lighting configuration from a plurality of lighting configurations supported by the flashlight module after the at least one attribute satisfies the specific criterion, wherein the plurality of lighting configurations respectively correspond to different light fields.