Wide-Angle Camera Illumination Control for Overexposure Balance
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Solution Overview
Problem
Surveillance cameras with wide-angle lenses face challenges in maintaining optimal image capturing quality due to issues of insufficient light or overexposure in different usage environments, requiring different types of cameras for varying conditions.
Innovation Solution
An image capturing device with multiple light-emitting modules and a control module that adjusts light currents based on usage scenarios, using reflective elements to control light distribution and intensity, ensuring optimal illumination for different viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single type of surveillance camera is used, then device complexity is reduced, but the camera cannot adapt to different lighting conditions (insufficient light or overexposure)
Solution Approach 1:
The patent implements dynamic adjustment of light-emitting modules to adapt to different lighting conditions. The control module dynamically controls the light-emitting elements based on environmental lighting detection, allowing the camera to adjust illumination intensity in real-time for different scenarios such as insufficient light or overexposure conditions.
Solution Approach 2:
The patent creates a universal surveillance camera system that can handle multiple lighting conditions through integrated light-emitting modules. By combining ambient light sensing and controllable light-emitting elements, a single camera device performs the functions previously requiring multiple specialized cameras.
2Illumination intensity
If additional light sources are used to illuminate the environment, then image capturing quality in low light conditions is improved, but the risk of overexposure in bright environments increases
Solution Approach 1:
The patent implements a feedback control mechanism where the control module receives signals from both ambient light sensors and image capturing modules. Based on this feedback, the system dynamically adjusts the intensity of light-emitting elements to maintain optimal illumination levels, preventing both insufficient light and overexposure conditions.
Solution Approach 2:
The patent changes the operational parameters of light-emitting modules based on environmental conditions. The control module adjusts emission intensity, duration, and timing of light beams according to detected ambient light levels, transforming the light source from a static component to a dynamically controlled one that adapts to prevent overexposure.
3Area of stationary object
If wide-angle lenses are used to obtain larger viewing angle, then coverage area is improved, but image capturing quality deteriorates due to insufficient light or overexposure
Solution Approach 1:
The patent segments the illumination function into multiple independent light-emitting elements that can be individually controlled. This segmentation allows different regions to receive appropriate illumination levels, with the control module selectively activating specific light-emitting modules based on the spatial distribution of light and camera capture requirements.
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
Maintains good image capturing quality by dynamically adjusting light-emitting effects according to different environments, enhancing image clarity and reducing the need for multiple camera types.
Implementation Method 1
The first light-emitting module is disposed on the substrate to provide a first light beam with a first brightness distribution
Implementation Method 2
The second light-emitting module is disposed on the substrate to provide a second light beam with a second brightness distribution
Implementation Method 3
The plurality of reflective elements are respectively located between the plurality of first light-emitting elements and a center point position of the image capturing device
Data Source
AI summary
An image capturing device including a substrate, a first light-emitting module, a second light-emitting module, an image capturing module, and a control module is provided. The first light-emitting module is configured to provide a first light beam with a first brightness distribution. The second light-emitting module is configured to provide a second light beam with a second brightness distribution. The image capturing module is configured to capture an environmental image illuminated by an illumination beam to obtain an image signal. The control module is electrically connected to the first light-emitting module, the second light-emitting module, and the image capturing module, and is configured to generate an adjustment signal, and adjust a current of the first light-emitting module and a current of the second light-emitting module according to the adjustment signal. In addition, an adjustment method of the image capturing device is also provided.