Stereoscopic Projection Illumination System Miniaturization
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Solution Overview
Problem
Conventional illumination systems for stereoscopic projection devices are bulky and prone to image cross-talk due to the use of a color wheel and color filter, which limits miniaturization and results in undesired wavelength generation when light is not projected at a perpendicular angle.
Innovation Solution
An illumination system for stereoscopic projection devices utilizing a color wheel module with rotating disk and wave band transforming areas to generate and filter lights of specific wavelengths, reducing volume and preventing image cross-talk by ensuring lights are projected at precise angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a color wheel and color filter are used in the illumination system, then the system can generate lights of different wavelengths, but the volume of the stereoscopic projection device cannot be miniaturized
Solution Approach 1:
The patent combines the color wheel and color filter into a single integrated color wheel module. The color wheel contains multiple transforming areas (fluorescent converting areas and color filtering areas) that are radially arranged on the same disk structure. This merging eliminates the need for separate color wheel and color filter components, reducing the overall device volume while maintaining the capability to generate lights of different wavelengths through the integrated transforming areas.
Solution Approach 2:
The color wheel module serves multiple functions simultaneously: it acts as both a color wheel for wavelength transformation and a color filter for wavelength selection. The transforming areas on the color wheel perform both fluorescent conversion and color filtering functions, making the component universal and eliminating the need for separate dedicated components, thereby enabling miniaturization.
2Device complexity
If lights are projected to the color filter at non-perpendicular angles, then the system structure is simplified, but undesired wavelengths are generated causing image cross-talk
Solution Approach 1:
The color wheel module incorporates different types of transforming areas at different radial positions: fluorescent converting areas and color filtering areas. Each area is optimized for its specific function and position. The imaging system is configured to project lights at substantially perpendicular angles to the color filter portion, ensuring that the perpendicular projection requirement is met locally at the filtering area while maintaining overall system simplicity.
3Quantity of substance
If a conventional color wheel and color filter system is used, then wavelength transformation is achieved, but image cross-talk occurs between left and right eye images
Solution Approach 1:
The color wheel is segmented into multiple distinct transforming areas arranged radially, including fluorescent converting areas and color filtering areas. Each area is responsible for specific wavelength transformations. This segmentation allows precise control over which wavelengths are generated and in which directions, preventing cross-talk between left and right eye images by ensuring that each eye receives only its designated wavelength range.
Solution Approach 2:
The imaging system acts as an intermediary between the light source and the projection lenses. It transforms the lights generated by the luminous element at different incident angles into lights with substantially perpendicular incident angles before they reach the color wheel module. This intermediary transformation ensures that the lights interact with the color filtering areas at the correct angles, preventing undesired wavelength generation and image cross-talk.
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 miniaturizes the illumination system and prevents image cross-talk by generating precise wavelengths and controlling light angles, enhancing image quality in stereoscopic projections.
Implementation Method 1
the first wave band lights can transmit the wave band transmitting transforming areas to excite a plurality of first selected wave band lights
Implementation Method 2
a plurality of second selected wave band lights, which are different from the first wave band lights and the first selected wave band lights, are excited and reflected from the wave band reflecting transforming areas
Data Source
AI summary
An illumination system for a stereoscopic projection device is provided. The illumination system comprises a luminous element and a color wheel module. The luminous element is adapted to generate a plurality of first wave band lights when the color wheel module has a plurality of wave band transmitting transforming areas and a plurality of wave band reflecting transforming areas. When the first wave band lights are projected to the wave band transmitting transforming areas, the first wave band lights are adapted to transmit the wave band transmitting transforming areas to excite a plurality of first selected wave band lights. When the first wave band lights are projected to the wave band reflecting transforming areas, the wave band reflecting transforming areas are adapted to excite and reflect a plurality of second selected wave band lights.