Light Source Apparatus Non-Overlapping Intensity Distribution
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Solution Overview
Problem
Existing light source apparatuses that combine beams from multiple solid-state light sources often result in high optical intensities in irradiated regions, leading to excessive load on the irradiated area, which can cause damage and reduce the lifespan of components like wavelength converters.
Innovation Solution
A light source apparatus comprising multiple light emitters arranged in rows along different directions, with a combiner that adjusts the beam paths to ensure non-overlapping high-intensity regions, reducing the load on wavelength converters and improving light utilization efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple solid-state light sources are combined to increase total light output, then light utilization efficiency is improved, but optical intensity in irradiated regions becomes excessively high causing load on components
Solution Approach 1:
The patent segments the light emission into multiple directional groups (first directional group and second directional group) with different emission directions. By arranging light emitters to emit in different directions and combining these segmented beams, the high intensity concentration is avoided while maintaining total light output, thus improving light utilization without excessive optical intensity load on components.
2Device complexity
If light emitters are arranged in a one-dimensional row to simplify structure, then device complexity is reduced, but light intensity distribution becomes non-uniform with overlapping high-intensity regions
Solution Approach 1:
The patent transitions from a one-dimensional row arrangement to a two-dimensional arrangement where light emitters are positioned at different locations and oriented in different directions (first directional group and second directional group). This dimensional change allows the high-intensity regions of different emitters to be spatially separated in the irradiated region, achieving more uniform light intensity distribution while maintaining structural simplicity.
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 achieves a more uniform light intensity distribution, reducing the load on wavelength converters and prolonging their lifespan while enhancing light utilization efficiency, leading to a more reliable and efficient light source apparatus.
Implementation Method 1
a combiner that combines the first luminous flux and the second luminous flux with each other to produce combined light
Implementation Method 2
a wavelength converter that is disposed in the irradiated region irradiated with the combined light from the light source apparatus and converts a wavelength of the combined light
Data Source
AI summary
A light source apparatus includes a first light source that includes a plurality of first light emitters arranged in a row along a first direction and emits a first luminous flux, a second light source that includes a plurality of second light emitters arranged in a row along a second direction and emits a second luminous flux in a direction in which the first luminous flux is emitted, and a combiner that combines the first and second luminous fluxes with each other to produce combined light and outputs the combined light to an irradiated region. The combined light has a combined light intensity distribution in which a first region where a light intensity of the first luminous flux is maximized and a second region where a light intensity of the second luminous flux is maximized do not overlap with each other.