Light Source Device Matrix Segmentation for Camera Flash Irradiation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light source devices for applications like camera flashes struggle to effectively irradiate multiple, finely divided irradiation regions with sufficient light, as the area of each region becomes smaller with increased divisions, making it difficult to concentrate light efficiently using optical lenses.
Innovation Solution
A light source device comprising multiple light emitting parts with a first lens and an optical lens, where the first lens narrows the full-width half-maximum of light emitted from each part, providing directivity towards specific irradiation regions, and the optical lens further refocuses this light to ensure adequate illumination of multiple irradiation areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the number of irradiation regions is increased to cover more areas, then the coverage area is improved, but the area of each individual region becomes smaller making it difficult to concentrate light efficiently
Solution Approach 1:
The patent divides the light source into multiple light emitting parts (first, second, third light emitting parts) arranged in a matrix, with each part corresponding to a specific irradiation region. This segmentation allows independent control and optimization of light emission for each region, enabling both broad coverage and sufficient light concentration in each divided area.
Solution Approach 2:
Different light emitting parts emit light with different full-width half-maximum (FWHM) characteristics tailored to their specific irradiation regions. The patent optimizes the emission properties of each light emitting part according to the requirements of its corresponding region, allowing precise control over light distribution and intensity in each area.
2Quantity of substance
If the area of each irradiation region is reduced to increase the number of regions, then the number of covered regions is improved, but the light intensity becomes insufficient
Solution Approach 1:
The patent segments the overall illumination task into multiple independent light emitting parts, each responsible for a specific irradiation region. This allows the system to increase the number of regions while maintaining sufficient light intensity in each region through dedicated light emission control.
Solution Approach 2:
The patent adjusts the full-width half-maximum (FWHM) parameter of light emission for different light emitting parts to optimize light concentration. By controlling the FWHM, the system can concentrate light effectively even in smaller irradiation regions, maintaining adequate light intensity across a larger number of regions.
3Illumination intensity
If optical lenses are used to concentrate light, then the light concentration is improved, but the system complexity increases
Solution Approach 1:
The patent replaces complex optical lens systems with a more straightforward approach using multiple light emitting parts with controlled emission characteristics. Instead of using optical lenses to concentrate light from fewer sources, the system achieves light concentration through controlled emission from multiple dedicated light emitting parts, simplifying the overall optical system.
Solution Approach 2:
The patent controls the full-width half-maximum (FWHM) parameter of light emission to achieve optimal light concentration directly from the light emitting parts. This parameter control approach eliminates the need for additional optical concentration elements, reducing system complexity while maintaining effective light concentration in each irradiation region.
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 solution enables efficient irradiation of multiple, small irradiation regions with sufficient light, improving the clarity of photographs by ensuring precise light distribution and reducing light loss, as demonstrated by simulation results showing a 24% efficiency compared to a configuration without the first lens.
Implementation Method 1
a light emitted from each of the light emitting parts enters the optical lens through the first lens, the light being emitted from the first lens at a second full-width half-maximum smaller than the first full-width half-maximum
Implementation Method 2
an optical lens located above the light emitting surfaces of the light emitting parts, the optical lens including: a first surface located at a light emitting surface side of the light emitting part, the first surface including a plurality of incident regions each corresponding to a respective one of the light emitting parts such that a light emitted from each of the plurality light emitting parts is incident on a respective one of the plurality of incident regions
Data Source
AI summary
A light source device includes: a plurality of light emitting parts arranged in a matrix, each having an upper surface that includes a light emitting surface, each of the light emitting parts being configured to emit light from the light emitting surfaces and at least one of the light emitting parts being configured to be individually turned on, wherein: each of the light emitting parts includes: a light emitting element, a wavelength conversion member covering the upper surface of the light emitting element, and a light-reflective member covering lateral surfaces of the light emitting element wavelength conversion member, and the light-reflective members of the light-emitting parts are directly adjacent to each other; and an optical lens located above the light emitting surfaces of the light emitting parts, the optical lens including: a first surface including a plurality of incident regions, and a second surface including a plurality of emission regions.