Exhibition Lighting with Object-Focused Color Sensor
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Solution Overview
Problem
Existing lighting systems for exhibition objects fail to maintain consistent color and lighting quality due to varying ambient conditions, as they primarily adjust based on ambient light rather than the object's light emission.
Innovation Solution
A lighting device with a lamp having adjustable LED light sources and a color sensor that detects the object's light emission, allowing for precise adjustment of lighting conditions by calculating deviations from a reference state and adjusting the lamp's parameters to maintain optimal lighting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sensors detect ambient light to control lamp emission, then the control system can respond to lighting changes, but the object's color remains inconsistent due to preponderant ambient light interference
Solution Approach 1:
A restricting optical system is introduced as an intermediary component between the sensor and the ambient light. This optical system selectively blocks ambient light while allowing the sensor to detect the light emitted by the illuminated object, thereby enabling accurate measurement without direct exposure to interfering ambient conditions
Solution Approach 2:
The sensor is configured to extract and detect only the specific component of light that is emitted by the illuminated object, separating this signal from the preponderant ambient light. This extraction approach allows the control system to respond to object lighting changes while ignoring ambient interference
2Extent of automation
If the sensor detects ambient light, then the control system can adjust lamp emission, but the detection accuracy of object lighting parameters is reduced
Solution Approach 1:
The restricting optical system serves as a mediator that enables automatic control by providing the sensor with clean, uninterfered measurements of object lighting parameters, allowing the control system to automatically adjust lamp emission based on accurate object-specific data
Solution Approach 2:
The sensor provides feedback on the actual lighting parameters of the illuminated object to the control system, which then automatically adjusts the lamp emission to maintain desired lighting conditions. The restricting optical system ensures this feedback is based on accurate object lighting measurements rather than ambient light
3Adaptability or versatility
If ambient light detection is used for control, then the system can operate in varying environments, but the object's color consistency cannot be maintained
Solution Approach 1:
The restricting optical system acts as a protective intermediary that shields the detection process from ambient light variations, allowing the system to operate in varying environmental conditions while maintaining accurate detection of object lighting parameters necessary for color consistency
Solution Approach 2:
By providing accurate feedback on the object's lighting parameters isolated from ambient interference, the control system can continuously adjust lamp emission to compensate for environmental variations, thereby maintaining stable object color appearance despite changing ambient conditions
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 device ensures highly accurate and consistent lighting of exhibition objects by focusing on the object's light emission, effectively mitigating the impact of changing ambient conditions and maintaining desired color and intensity.
Implementation Method 1
a lamp (3) having at least one LED light source (4) capable of varying the emission spectrum (in particular, chromatic components and/or colour temperature) and light intensity of the emitted light
Implementation Method 2
a colour sensor (5), capable of detecting a trio of RGB values, and optionally a light intensity or luminance value
Data Source
Figure 1
AI summary
A lighting device (1), in particular for lighting an exhibition object (2), comprises a lamp (3) having at least one LED light source (4) capable of varying the emission spectrum and light intensity of the emitted light; a colour sensor (5), capable of detecting a trio of RGB values and optionally a light intensity or luminance value; and a control unit (7) connected to the light source (4) and to the sensor (5) for operating the lamp (3) and precisely the light source (4) depending on signals received from the sensor (5); a restricting optical system (6), positioned in front of the sensor (5) and configured so as to frame the object (2) or a part thereof and increase the ratio between the light of the object (2), arriving at the sensor (5) from the object (2), or its part framed by the optical system (6), and the ambient light arriving at the sensor (5) from the environment surrounding the object (2).