Integrated Rotary Wheel Light Source for Miniaturized 3D Projection
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Solution Overview
Problem
Conventional 3D projection systems using solid-state light sources have complex structures, high costs, and are difficult to miniaturize due to the need for precise alignment of phosphor rotary wheels and color wheels, making them cost-ineffective and incompatible with the trend towards miniaturization and improved brightness.
Innovation Solution
A light source system comprising two solid-state light sources, two filters, a rotary wheel, a first reflector, a second reflector, and a multiband filter, where the rotary wheel has waveband converting, reflecting, and transmission regions to convert and direct light beams of different wavebands, allowing for simplified optical structure and miniaturization while maintaining high brightness and color gamut.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional solid-state light source systems with phosphor rotary wheels and color wheels are used, then 3D projection capability is achieved, but the structure becomes complex and difficult to miniaturize
Solution Approach 1:
The patent combines the phosphor rotary wheel and color wheel into a single integrated rotary wheel structure. The rotary wheel contains both waveband converting regions (with phosphor materials) and color filtering regions (with color filters) on its periphery, eliminating the need for separate phosphor wheel and color wheel assemblies. This merging reduces structural complexity while maintaining 3D projection capability.
Solution Approach 2:
The rotary wheel serves multiple functions simultaneously: it acts as both a waveband converter (through phosphor regions) and a color filter (through color filter regions). This multi-functional design replaces what previously required two separate components, simplifying the overall optical structure while achieving the same 3D projection effect.
2Adaptability or versatility
If conventional solid-state light source systems with phosphor rotary wheels and color wheels are used, then 3D projection capability is achieved, but the system volume increases and miniaturization becomes difficult
Solution Approach 1:
By merging the phosphor rotary wheel and color wheel into a single integrated rotary wheel, the patent significantly reduces the system volume. The combined structure eliminates the space required for two separate rotating components, their respective mounting structures, and alignment mechanisms, enabling miniaturization while preserving 3D projection functionality.
3Reliability
If conventional solid-state light source systems are used, then light beam propagation is achieved, but precise alignment and manipulation of light paths requires complex structures
Solution Approach 1:
The integration of phosphor and color filter regions into a single rotary wheel eliminates the need for complex alignment mechanisms between separate wheels. The unified structure ensures fixed relative positions between waveband conversion and color filtering functions, simplifying light path manipulation while maintaining alignment reliability.
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 achieves a simplified optical structure, miniaturization, and improved brightness, enabling efficient 3D and 2D projection with a desirable color gamut, reducing manufacturing costs and aligning with the trend towards smaller, more efficient projection technologies.
Implementation Method 1
The first waveband converting region and the second waveband converting region are used to convert the first or the second light beam into a third light beam of a third waveband
Implementation Method 2
The multiband filter is used to allow the fourth light beam of a fourth waveband in the third light beam to pass therethrough and used to reflect the fifth light beam of a fifth waveband included in the third light beam
Implementation Method 3
The first surface of the rotary wheel further comprises a first waveband converting region, a reflecting region and a transmission region
Data Source
AI summary
A light source system includes two solid-state light sources, two filters, a rotary wheel, a first reflector, a second reflector and a multiband filter is provided. The rotary wheel has a first surface and a second surface opposite to the first surface. The two solid-state light sources and the two filters are disposed in front of the first surface. The first surface includes a first waveband converting region, a reflecting region and a transmission region. The second surface includes a second waveband converting region is symmetrical to the first waveband converting region. The first reflector, the second reflector and the multiband filter are disposed in front of the second surface. Furthermore, the multiband filter is disposed between and optically coupled with the first and the second reflectors. With these arrangements, the light source system could provide light beams of different wavebands to the light valve of a projector.