Stereoscopic Light Source System Using Single Laser and Rotary Wheel
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Solution Overview
Problem
Conventional solid-state light source systems for stereoscopic projection require complex synchronization of color wheels and occupy significant space, making them difficult to miniaturize.
Innovation Solution
A light source system comprising a first and second solid-state light source, filters, a rotary wheel with a total internal reflection prism, and a multiband filter, which allows for the conversion and separation of light wavebands without the need for complex synchronization, enabling a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two color wheels are used for waveband conversion and separation, then the light source system can achieve stereoscopic projection functionality, but the system occupies large space and requires complex synchronization control
Solution Approach 1:
The patent combines the functions of two separate color wheels into a single integrated optical path. The first color wheel converts blue laser light to red or green light, while the second color wheel separates left-eye and right-eye view angle light. By merging these functions and using a single blue laser light source that emits two different blue wavelengths, the system achieves the same stereoscopic projection functionality with reduced space occupation and without requiring complex synchronization control between two rotating wheels.
Solution Approach 2:
The single blue laser light source serves multiple functions by emitting two different blue wavelengths that can be converted to different colors (red or green) and also serve as the basis for generating both left-eye and right-eye view angle light. This multi-functionality eliminates the need for two separate color wheels, thereby reducing system complexity and space requirements while maintaining full stereoscopic projection capability.
2Adaptability or versatility
If two color wheels are used for waveband conversion and separation, then the light source system can achieve stereoscopic projection functionality, but the control system becomes complex due to rotation synchronization requirements
Solution Approach 1:
The patent merges the control functions by using a single blue laser light source with two different wavelengths instead of two separate color wheels. This eliminates the need for complex synchronization control between two rotating wheels, as the system can achieve the same stereoscopic projection functionality through a simplified optical path with a single light source and associated optical elements.
Solution Approach 2:
The patent extracts and eliminates the synchronization control requirement by removing the second color wheel and its associated control mechanisms. The system achieves stereoscopic projection by using the first color wheel for waveband conversion and a simplified optical arrangement for view angle separation, thereby taking out the complex synchronization control system while preserving the essential functionality.
3Adaptability or versatility
If two color wheels are used for waveband conversion and separation, then the light source system can achieve stereoscopic projection functionality, but miniaturization becomes difficult
Solution Approach 1:
The patent combines the functions of two color wheels into a single integrated optical system. By using a single blue laser light source that emits two different blue wavelengths and a single color wheel for waveband conversion, the system achieves stereoscopic projection functionality with a compact footprint, enabling miniaturization that would be difficult with two separate rotating color wheels.
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 effectively outputs lights of different wavebands to a projector, allowing for stereoscopic image projection while minimizing space and avoiding synchronization issues, thus enabling a more compact and efficient light source system for stereoscopic projection.
Implementation Method 1
a total internal reflection (TIR) prism, being disposed at the second side of the rotary wheel, and having a first surface and a second surface that are connected to each other in a way so that the first surface faces the rotary wheel
Implementation Method 2
a multiband filter, being disposed at the second side of the rotary wheel, and facing the second surface
Implementation Method 3
a first reflector that is disposed at the second side of the rotary wheel and faces the second surface, wherein the multiband filter is disposed between the first reflector and the second surface, with the first reflector oblique to the multiband filter
Data Source
AI summary
A light source system for stereoscopic projection is disclosed, which includes: at least one light source set, two filters, a rotary wheel, a TIR prism, a multiband filter and at least one reflector. The at least one light source set and the two filters are disposed at a first side of the rotary wheel, while the TIR prism, the reflector and the multiband filter are disposed at a second side of the rotary wheel. With the above arrangements, the light source system could provide different lights of different wavebands to a light valve of a projector in different time sequences, and the projector could thus project a right-eye view angle image and a left-eye view angle image to viewers to form a stereoscopic image.