Imaging Apparatus Infrared Illumination Control
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Solution Overview
Problem
There is a growing demand for imaging apparatuses with higher illumination intensity limits to effectively capture images of objects in low light conditions or at a distance, particularly for monitoring applications, where existing technologies struggle to provide sufficient illumination control.
Innovation Solution
The imaging apparatus incorporates an infrared illumination unit, a target detection unit, a radiation illuminance calculation unit, and a comparison unit to dynamically adjust illumination intensity based on the detected presence of a human body, ensuring that the radiation illuminance does not exceed a predetermined threshold, thereby optimizing image capture without excessive infrared radiation exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the illumination intensity of the illumination device is increased to enable imaging of objects farther away or under low light conditions, then the imaging capability is improved, but the radiation illuminance to the human body increases and may exceed safe thresholds
Solution Approach 1:
The illumination intensity is made dynamically adjustable based on real-time detection of human body presence and calculation of radiation illuminance. The system transitions from static high-intensity illumination to dynamic intensity control that adapts to environmental conditions and human proximity, resolving the contradiction between maintaining high illumination capability and preventing excessive radiation exposure.
Solution Approach 2:
The system implements a feedback loop where the detection unit monitors human body presence, the calculation unit computes radiation illuminance, and the control unit adjusts illumination intensity accordingly. This closed-loop feedback mechanism ensures that illumination intensity is continuously optimized to maintain imaging quality while preventing radiation illuminance from exceeding safe thresholds.
2Illumination intensity
If the illumination intensity is increased to capture images in low light conditions, then the image capture capability is improved, but the energy consumption increases
Solution Approach 1:
The system dynamically adjusts illumination intensity based on ambient light conditions and human body presence. Instead of operating at maximum intensity continuously, the illumination device adapts its output to match actual imaging needs, reducing energy consumption while maintaining effective image capture capability in low light conditions.
Solution Approach 2:
The control unit changes the illumination parameter (intensity) based on detected conditions such as ambient light levels and human proximity. By varying the illumination intensity parameter dynamically, the system achieves effective low-light imaging only when necessary, thereby reducing overall energy consumption compared to continuous high-intensity operation.
3Illumination intensity
If the illumination intensity is continuously adjusted to maintain optimal imaging conditions, then the imaging quality is improved, but the device complexity increases
Solution Approach 1:
The control unit integrates multiple functions including detection signal processing, radiation illuminance calculation, threshold comparison, and illumination control into a single multi-functional component. This universal control unit manages all aspects of illumination adjustment based on human body detection, simplifying the overall device architecture while maintaining the ability to dynamically optimize imaging quality.
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
This solution enables effective image capture in low light conditions by adjusting illumination intensity according to the detected target, preventing prolonged exposure to high infrared radiation and maintaining appropriate brightness, thus enhancing monitoring capabilities while minimizing potential human body irradiation.
Implementation Method 1
an illumination unit configured to emit infrared light
Data Source
AI summary
An imaging apparatus includes an illumination unit, an imaging unit, an illumination control unit, a target detection unit, a radiation illuminance, and a comparison unit. The illumination unit emits infrared light. The imaging unit captures an image of an object. The illumination control unit controls an illumination intensity of the illumination unit for irradiating the object. The target detection unit detects at least a portion of a human body contained within an irradiation range of the illumination unit. The radiation illuminance calculation unit calculates a radiation illuminance of the illumination unit with respect to the portion of the human body detected by the target detection unit. The comparison unit compares the radiation illuminance calculated by the radiation illuminance calculation unit with a predetermined threshold value. The illumination control unit controls the illumination intensity of the illumination unit based on a comparison result of the comparison unit.