Multi-Flash Photography System with Programmable Lighting Control
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Solution Overview
Problem
Existing multi-flash photography systems struggle to precisely customize lighting characteristics and ensure reproducible image-to-image capture, especially in clinical/medical research, due to variability in light sources and subject movement during rapid burst-mode image capture.
Innovation Solution
A multi-flash photography system with sequentially fired flash devices of varying characteristics, controlled by a programmed template and a shared photometric sensor, using a combination of flash sources (xenon, LED, and continuous light) with filter mechanisms to achieve precise spectral and directional control, and a sensor assembly positioned near the subject for accurate light measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple flash devices with different lighting characteristics are used to customize lighting environment, then lighting customization capability is improved, but system complexity increases
Solution Approach 1:
The system divides the lighting control into separate controllable flash devices, each capable of independent spectral filtering and polarization control. This segmentation allows precise customization of lighting characteristics while maintaining manageable system architecture through modular design.
Solution Approach 2:
The system employs dynamic control of flash firing sequences and intensity levels through programmable templates. The photometric detector provides real-time feedback to adjust lighting parameters during capture, enabling adaptive lighting customization that responds to subject conditions and capture requirements.
2Ease of operation
If photometric detection is performed at the flash unit or through-the-lens, then measurement simplicity is improved, but measurement accuracy for subject-received light deteriorates
Solution Approach 1:
The patent introduces a shared photometric detector as an intermediary measurement device positioned near the subject. This detector directly measures the light that reaches the subject, providing accurate photometric data for flash intensity control while maintaining operational simplicity through automated feedback control.
3Productivity
If rapid burst-mode image capture is used to minimize subject movement, then image capture speed is improved, but lighting consistency between images deteriorates
Solution Approach 1:
The system employs a shared photometric detector that provides real-time feedback on lighting conditions during rapid burst-mode capture. This feedback mechanism enables dynamic adjustment of flash intensity and timing for each image, ensuring consistent lighting across multiple rapid captures despite subject movement or environmental changes.
Solution Approach 2:
The system performs preliminary photometric measurements and calculates appropriate flash intensity levels before each capture event. Programmed templates pre-configure lighting parameters, and the photometric detector validates conditions, ensuring consistent lighting setup is established in advance of each rapid image capture.
4Manufacturing precision
If multiple light sources with different spectral characteristics are used to enhance image attributes, then image quality enhancement is improved, but device complexity increases
Solution Approach 1:
The system segments the lighting function into multiple independent light sources, each capable of providing different spectral characteristics. Each light source can be independently controlled and filtered, allowing precise enhancement of specific image attributes while maintaining modular system architecture.
Solution Approach 2:
Different light sources and filters are applied to different spatial zones and spectral ranges to enhance specific local attributes of the subject. For example, UV lighting may enhance skin texture while visible light provides overall illumination, with each source optimized for its specific enhancement function.
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 system enables precise customization of lighting for enhanced image attributes, minimizes subject movement, and ensures consistent light metering across multiple sources, facilitating accurate cross-comparison of images in rapid burst-mode capture.
Implementation Method 1
a shared photometric detector located sufficiently close to the subject being photographed to ensure that the light seen by the detector is proportionally the same as the light received by the subject
Implementation Method 2
filters that provide linear, cross, parallel, or circular polarization, and/or pass ultra-violet, infrared, or another selected portion(s) of the light spectrum
Implementation Method 3
filters that provide linear, cross, parallel, or circular polarization
Data Source
AI summary
A multi-flash photography system provides a dynamically-configurable lighting environment for a single exposure that is created and shaped through the sequentially firing of various light sources with different lighting characteristics controlled in accordance with both a programmed template specifying the flash type, position, firing order, and output intensity, as well as optical processing requirements such as filtering, polarizing, etc., and a shared photometric detector located sufficiently close to the subject being photographed to ensure that the light seen by the detector is substantially the same as the light received at the subject.