Image Shifting Module Dual Vibration Mechanism Resolution
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Solution Overview
Problem
Conventional rear projection display devices increase image resolution by using costly high-resolution display components or a vibration mechanism that only shifts images by ½ pixel, limiting resolution enhancement to either horizontal or vertical direction.
Innovation Solution
An image shifting module with two vibration mechanisms is introduced, shifting sub-images by a desired distance along the horizontal and vertical directions in each frame time, allowing simultaneous enhancement of both horizontal and vertical resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a vibration mechanism is used to increase image resolution, then manufacturing cost is reduced, but resolution enhancement is limited to only horizontal or vertical direction
Solution Approach 1:
The patent applies dimensionality change by introducing a second vibration mechanism that operates in the vertical direction while the first vibration mechanism operates in the horizontal direction. This transforms a single-dimensional image shifting capability into a two-dimensional capability, allowing simultaneous enhancement of both horizontal and vertical resolution without requiring expensive high-resolution display components.
2Manufacturing precision
If high-resolution display components are used, then image resolution is improved, but manufacturing cost increases
Solution Approach 1:
The patent applies dynamics by using vibration mechanisms to dynamically shift the image position of sub-images during operation. Instead of relying on static high-resolution display components, the system uses dynamic mechanical movement to achieve resolution enhancement, allowing standard-resolution components to produce higher-resolution output through temporal and spatial modulation of light paths.
3Device complexity
If a single vibration mechanism shifts image by ½ pixel, then device complexity is reduced, but productivity in terms of resolution enhancement is limited
Solution Approach 1:
The patent applies merging by combining the functions of two vibration mechanisms operating in perpendicular directions into a unified image shifting module. This integrated module simultaneously performs horizontal and vertical image shifting, achieving comprehensive resolution enhancement in both dimensions while maintaining a cohesive structural design that minimizes overall system 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
The image shifting module effectively increases image resolution by doubling the column and row resolutions, enabling higher resolution image projection without the need for expensive high-resolution display components.
Implementation Method 1
the first vibration mechanism shifts the imaging position of the sub-images along a horizontal direction by a first distance in each frame time
Implementation Method 2
the second vibration mechanism shifts the image position of the sub-images along a vertical direction by a second distance in each frame time
Data Source
AI summary
An image shifting module for shifting imaging positions of sub-images projected on a screen in each frame, and an optical projection device using the same are provided. The image shifting module includes a first vibration mechanism and a second vibration mechanism. The first vibration mechanism is disposed on the transmission path of the sub-images and shifts the sub-images projected on the screen by a first distance along a horizontal direction in each frame time. Moreover, the second vibration mechanism is disposed on the transmission path of the sub-images and shifts the sub-images projected on the screen by a second distance along a vertical direction in each frame time. Through this image shifting module, the image resolution can be increased.