Light Source System Dynamic Track Adjustment
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Solution Overview
Problem
Conventional projector technologies face limitations in extending the life of wavelength conversion materials due to aging caused by high-powered excitation, as the illumination area is not fixed, leading to reduced light conversion efficiency and heat dissipation issues.
Innovation Solution
A light source system with a moving device carrying wavelength conversion materials, where the excitation light's spot moves periodically along a first working track and is adjusted by an adjusting device to move along a separate second working track, reducing the load on the materials and incorporating a detection system to trigger adjustments when light emission intensity drops, thereby prolonging the system's life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the light spot moves periodically along a fixed working track, then the heat dissipation ability of the wavelength conversion material is improved, but the material ages faster and the system life is limited
Solution Approach 1:
The patent applies the dynamics principle by making the working track variable rather than fixed. The adjusting device dynamically changes the light spot position on the moving device, transforming the illumination pattern from a fixed circular track to a variable multi-track pattern. This dynamic adjustment prevents the material from aging at the same location repeatedly, thereby extending system life while maintaining heat dissipation benefits.
Solution Approach 2:
The patent applies the dimensionality change principle by adding a second dimension of movement. Instead of the light spot moving only along a single circular track in one dimension, the adjusting device introduces movement in a perpendicular dimension, creating a two-dimensional illumination pattern. This causes the light spot to traverse multiple working tracks, distributing the illumination load across different material regions and reducing localized aging.
2Power
If high-powered excitation light is used, then the light conversion efficiency is improved, but the wavelength conversion material experiences reduced life due to heat and aging
Solution Approach 1:
The patent applies the periodic action principle by implementing periodic movement of the light spot along multiple working tracks. The moving device periodically changes position, and the adjusting device periodically shifts the light spot location. This periodic redistribution of illumination prevents any single material region from undergoing continuous high-powered excitation, thereby reducing heat accumulation and extending material life while maintaining overall conversion efficiency.
Solution Approach 2:
The patent applies the continuity of useful action principle by ensuring that the wavelength conversion material continuously receives illumination across multiple tracks rather than being stationary under a single light source. The combined movement of the moving device and adjusting device creates continuous variation in the illumination pattern, preventing localized overheating while maintaining sustained light conversion activity throughout the material.
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 effectively slows down the aging of wavelength conversion materials by altering the light spot's position, reducing the load on unit areas, and increasing the overall life of the light source system.
Implementation Method 1
illuminating an excitation light on wavelength conversion materials of multiple wavelength ranges
Data Source
Figure 1
Figure 2a~2d
Figure 3
AI summary
A light source system and a projection system applied thereby. The light source system includes a light source (10) emitting excitation light, a moving device (20) provided with an optical wavelength conversion material and an adjustment device (30). The excitation light irradiates on the optical wavelength conversion material. When the moving device (20) is in a periodical moving state, the light spot position irradiated by the excitation light on the moving device (20) moves following a first working track. The adjustment device (30) is used for adjusting the light spot position so that the light spot position irradiated by the adjusted excitation light on the moving device (20) moves following a second working track. The first working track is separated from the second working track. The present invention can reduce the working load of the optical wavelength conversion material on the first working track, thus slowing the aging speed of the optical wavelength conversion material, and improving the service light of the light source system.