Automatic Illumination Control for Constant Brightness and Color Temperature
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Solution Overview
Problem
Conventional illumination devices struggle to maintain consistent illumination intensity and color temperature when the distance between the subject and the device changes, leading to suboptimal photography conditions and increased costs due to frequent lamp replacements and heat-related issues.
Innovation Solution
An automatic illumination control apparatus equipped with a distance measuring sensor and an illumination managing unit that adjusts the output of the illumination device based on the distance between the subject and the device, ensuring constant illumination intensity and color temperature through real-time feedback and control of LED modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the illumination device uses high-power lamps (200W or 2kW) to provide sufficient light output, then the illumination intensity is improved, but the heat generation increases causing subject skin damage and device malfunction
Solution Approach 1:
The patent changes the fundamental parameter of light source technology from traditional high-power lamps to LED modules, which have superior power efficiency and generate significantly less heat while maintaining adequate illumination output for photography applications
Solution Approach 2:
The patent converts the heat generation problem into a benefit by using LED technology that inherently produces minimal heat, thereby eliminating the harmful effects of heat-related skin damage and device malfunction while maintaining sufficient illumination intensity
2Productivity
If the illumination device operates for extended periods to complete photography tasks, then the productivity is improved, but the lamp lifespan decreases due to heat accumulation and color temperature changes
Solution Approach 1:
The patent changes the operational parameters by switching to LED modules that maintain stable color temperature over time and can operate continuously without the degradation issues affecting traditional lamps, thereby extending lifespan while supporting extended photography sessions
Solution Approach 2:
The patent enables continuous operation of the illumination device without the need for frequent lamp replacements or interruptions due to heat-related problems, allowing photography tasks to proceed continuously for extended periods
3Illumination intensity
If the illumination device provides high total luminous flux (20000 lumens or more) to meet photography requirements, then the illumination intensity is improved, but the energy consumption increases
Solution Approach 1:
The patent fundamentally changes the energy efficiency parameter by using LED modules that convert electrical energy to light much more efficiently than traditional lamps, achieving high total luminous flux output with significantly reduced energy consumption
4Adaptability or versatility
If the illumination device uses traditional lamps to create different atmospheres through color temperature variations, then the adaptability is improved, but the manufacturing complexity increases due to separate air-conditioning equipment requirements
Solution Approach 1:
The patent changes the color temperature control approach by using LED modules with adjustable color temperature settings that can be controlled electronically without requiring separate air-conditioning equipment, thereby maintaining atmosphere creation capability while reducing device complexity
Solution Approach 2:
The patent replaces the mechanical/thermal approach of using separate air-conditioning equipment with an electronic control system that adjusts LED color temperature parameters, eliminating the need for additional cooling hardware while maintaining adaptability
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 consistent and high-quality photography by automatically adjusting illumination intensity and color temperature, reducing the need for manual adjustments and extending the lifespan of the illumination device while minimizing heat generation and energy consumption.
Implementation Method 1
a distance measuring sensor which is installed at a position close to the illumination device to measure distance information between the illumination device and the subject
Data Source
AI summary
An automatic illumination control apparatus for adjusting an output of an illumination device depending upon a distance between a subject and the illumination device, includes: a distance measuring sensor installed at a position close to the illumination device to measure distance information between the illumination device and the subject; and an illumination managing unit configured to generate a management signal including an illumination intensity of illumination which is outputted from the illumination device according to the distance information, and send the management signal to the illumination device. With the present invention, even though the subject comes toward or away from the main illumination device and thus the distance between the subject and the illumination is changed, the illumination intensity indicative of the subject and the space around the subject and the color temperature can be constantly maintained, thereby obtaining the still picture or the motion picture with constant quality.