Ambient Light Sensing LED Module for Dynamic Color Temperature
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Solution Overview
Problem
Conventional LED strobe or flash lighting systems are inadequate for low ambient light environments and unable to adjust their color temperature based on environmental conditions, leading to suboptimal image capture in varying lighting situations.
Innovation Solution
An intelligent color-tunable LED strobe system that senses ambient light levels and color temperature, using RGB+WW LEDs to adjust brightness and color temperature to match the environment, providing sufficient and appropriate lighting for superior image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional LED strobe or flash lighting systems are used, then the device remains simple and portable, but the lighting is inadequate in low ambient light environments
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the color temperature of the LED strobe system based on ambient light conditions. The system transitions from fixed-color temperature to variable color temperature, matching the ambient environment (e.g., warm tones for indoor lighting, cooler tones for daylight) to maintain appropriate lighting characteristics across different scenarios.
Solution Approach 2:
The patent implements feedback by incorporating an ambient light sensor that continuously monitors environmental lighting conditions and feeds this information back to the control system. This enables the LED driver to automatically adjust color temperature and intensity in response to changing ambient conditions, resolving the adaptability issue.
2Adaptability or versatility
If conventional LED strobe or flash lighting systems are used, then the device structure remains simple, but the color temperature cannot be adjusted to match the environment
Solution Approach 1:
The patent applies universality by designing a multi-functional LED driver that can adjust both intensity and color temperature of the LED output. This single driver circuit performs multiple functions (dimming, color temperature control, strobe timing) that would otherwise require separate control circuits, thereby managing complexity while achieving adaptability.
Solution Approach 2:
The system changes the color temperature parameter dynamically based on ambient conditions rather than using fixed color temperature. This is achieved through PWM (pulse width modulation) control of LED current, allowing the same hardware to produce different color temperatures by adjusting electrical parameters.
3Length of stationary object
If hard light is used to provide projected illumination, then the light can be thrown beyond a foot, but it creates harsh lighting that causes discomfort and glare
Solution Approach 1:
The patent applies dynamics by making the lighting characteristics adjustable rather than fixed. The system can dynamically switch between hard light modes (for distance projection) and soft light modes (for comfortable illumination) based on the operational requirement, allowing the same hardware to serve multiple lighting purposes.
Solution Approach 2:
The system changes the quality of light output by adjusting color temperature and intensity parameters. By controlling the LED driver to produce different color temperatures and brightness levels, the system can create harsh short-range light or comfortable long-range light as needed.
4Object-affected harmful factors
If soft light is used to provide non-harsh illumination, then comfort is improved, but the light cannot be projected or thrown beyond a foot
Solution Approach 1:
The patent applies dynamics by enabling the lighting system to adapt its characteristics based on operational needs. The same LED module can be configured to emit soft light for close-up comfortable illumination or hard light for distant projection, providing flexibility that resolves the distance-comfort contradiction.
Solution Approach 2:
The patent segments the LED output into different functional zones or modes - a central region for soft illumination and peripheral regions for projected hard light. This spatial segmentation allows different light qualities to coexist from the same source, satisfying both comfort and projection requirements simultaneously.
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 system ensures adequate and uniformly colored lighting, enhancing image quality by intelligently adjusting to ambient conditions, providing both hard and soft light capabilities without the need for external modifiers.
Implementation Method 1
A first plurality of LEDs are disposed along a periphery of the first surface, the first plurality of LEDs are configured to generate light in a first direction toward an edge of the lens. A second plurality of LEDs disposed proximate to the first surface, the second plurality of LEDs are configured to generate light in a second direction through the lens.
Data Source
AI summary
The disclosed technology relates to a hard and soft light module having a housing with a first surface that accommodates a lens. A first plurality of LEDs are disposed along a periphery of the first surface, the first plurality of LEDs are configured to generate light in a first direction toward an edge of the lens. A second plurality of LEDs are disposed proximate to the first surface, the second plurality of LEDs are configured to generate light in a second direction through the lens. The first plurality of LEDs are configured to generate a soft light and the second plurality of LEDs are configured to generate a hard light.