Adjustable Color Wheel Light Source for 2D and 3D Projection
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Solution Overview
Problem
Conventional light source systems for image projection fail to generate different light sequences according to varying working modes, such as 2D and 3D projection displays, resulting in unsatisfactory color saturation and brightness in display applications.
Innovation Solution
A light source system incorporating a color wheel with adjustable positions and segments that can switch between different light sequences by altering the exposure of excitation light to areas with specific wavelength conversion materials, dichroic filters, and polarizers to generate red, green, blue, and white lights for various display modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional color wheel with fixed segments is used to generate multi-color light sequences, then the system can provide white light enhancement for brightness improvement, but the color saturation becomes poor and unsatisfactory
Solution Approach 1:
The patent applies dynamics by making the color wheel rotatable and adjustable, allowing it to switch between different rotational states. In the first rotational state, the color wheel generates red, green, and blue light sequences for high color saturation. In the second rotational state, it generates red, green, blue, and white light sequences for brightness enhancement. This dynamic adjustment resolves the contradiction between color saturation and brightness by enabling the system to adapt to different display requirements.
2Adaptability or versatility
If a conventional light source system is designed for a single working mode, then the structure remains simple, but it cannot provide different light sequences for different display applications such as 2D and 3D projection
Solution Approach 1:
The patent applies universality by designing a color wheel that can perform multiple functions through rotational adjustment. The same color wheel structure serves different purposes: in the first rotational state, it provides RGB light sequences for 3D projection display; in the second rotational state, it provides RGBW light sequences for 2D projection display. This multi-functional design enables the system to support different display modes without requiring separate light source systems, thus resolving the contradiction between adaptability and device complexity.
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
Enables the generation of distinct light sequences for different working modes, enhancing color saturation and brightness, and supporting both 2D and 3D projection displays with improved luminous efficiency and color differentiation.
Implementation Method 1
The color wheel 14 includes several segments, which carries different fluorescent materials to convert excitation light to converted light
Implementation Method 2
dichroic filters, and polarizers to generate red, green, blue, and white lights
Data Source
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AI summary
Disclosed are a light source system (30) and an image projection system including the light source system. The light source system comprises a light source (31) used for generating a excitation light, a moving color device (34) used for receiving the excitation light which has a first area (41) and a second area (42) with at least two segments respectively, a driving device (34) used for driving the moving color wheel periodically so that a first light sequence is generated by the two or more first segments in the first working mode and a second light sequence is generated by the two or more second segments in the second working mode. The first light sequence is different from the second light sequence. The first and second working modes are switched by a switching device. Thus two or more different lights sequences in different working modes are generated.