Autostereoscopic Display Using Rotational Mirror Wheel
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Solution Overview
Problem
Conventional autostereoscopic displays require multiple projectors, leading to large size and high cost, and suffer from efficiency losses due to blocked non-working views, resulting in reduced brightness and difficulty in achieving large display sizes.
Innovation Solution
An autostereoscopic display device utilizing a rotational mirror wheel and actuator to deviate a single light source into multiple directions, combined with light modulators and optical modules, allowing for the generation of multiple image light beams corresponding to different views without the need for multiple projectors, thereby reducing size and cost while maintaining efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple projectors are used to provide images in a conventional autostereoscopic display, then multiple views can be provided, but the device size becomes large and cost increases
Solution Approach 1:
The patent segments the light beam propagation path by introducing a light beam deviating device that sequentially directs light to different light modulators. This allows a single light source to serve multiple views by temporal and spatial segmentation of the light path, eliminating the need for multiple projectors while maintaining multi-view capability
Solution Approach 2:
The patent employs dynamic switching mechanisms including a rotational mirror wheel and electronic control of light beam deviation to rapidly alternate between different view configurations. This dynamic approach enables a single light source to sequentially serve multiple views, achieving multi-view functionality without the static requirement of multiple projectors
2Adaptability or versatility
If multiple projectors are used to provide images in a conventional autostereoscopic display, then multiple views can be provided, but the manufacturing cost increases
Solution Approach 1:
The patent makes a single light source perform multiple functions by using it to illuminate multiple light modulators sequentially through the light beam deviating device. This universal light source replaces multiple dedicated projectors, reducing component count and manufacturing cost while maintaining the ability to provide multiple views
Solution Approach 2:
The patent merges the functions of multiple projectors into a single integrated system consisting of one light source, one or more light modulators, and a light beam deviating device. This consolidation reduces the total number of components and simplifies the manufacturing process while achieving the same multi-view output
3Reliability
If non-working views are blocked in slit switch light field technology, then view separation is achieved, but display efficiency decreases and brightness is lost
Solution Approach 1:
The patent employs periodic switching of the light beam deviation to sequentially activate different light modulators for different views. This periodic action ensures that only the currently active view receives light, achieving view separation without the need to block non-working views, thereby maintaining display efficiency and brightness
Solution Approach 2:
The patent maintains continuous useful action by ensuring that the light source continuously illuminates the active light modulator without interruption. By dynamically directing light to the appropriate modulator without blocking non-active paths, the system maintains high display efficiency and brightness while achieving view separation
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 solution enables a compact, cost-effective autostereoscopic display that generates multiple image light beams corresponding to different views, enhancing display efficiency and brightness by using a single light source, allowing for faster view switching and improved gray scale modulation.
Implementation Method 1
The rotational mirror wheel includes a rotational wheel and a plurality of reflection mirrors. At least one reflective area is formed on each of the reflective mirrors when the first light beam impinges on the reflective mirror, and the first light beam is reflected from the reflective area.
Implementation Method 2
The first light modulator is configured for modulating the first light beam into a plurality of first image light beams in sequence.
Implementation Method 3
The optical module is configured for guiding the first light beam propagated from the light beam deviating device to the first light modulator, and guiding the first image light beams to the lens.
Data Source
AI summary
An autostereoscopic display device includes a first light source, a light beam deviating device, a first light modulator, a lens, and an optical module. The first light source is configured for providing a first light beam. The light beam deviating device is configured for deviating the first light beam propagated from the first light source to different directions in sequence. The first light modulator is configured for modulating the first light beam into a plurality of first image light beams in sequence. The optical module is configured for guiding the first light beam propagated from the light beam deviating device to the first light modulator, and guiding the first image light beams to the lens.