Stereoscopic Display Remote Beam Alignment via Polarizing Splitter
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Solution Overview
Problem
Conventional single projector stereoscopic image display systems suffer from reduced brightness and inefficient alignment processes, particularly when installed at high positions or in large spaces, where manual alignment can be dangerous and time-consuming.
Innovation Solution
A stereoscopic image display apparatus with a remotely controlled alignment function, utilizing a polarizing beam splitter to split image light into transmitted and reflected beams, and remote-control alignment type reflecting members to adjust the beam paths, allowing for precise alignment of beams without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual alignment is used to align transmitted and reflected beams, then alignment precision can be achieved, but the alignment process becomes dangerous and time-consuming when installed at high positions or in large spaces
Solution Approach 1:
The patent introduces an alignment marker as an intermediary object placed at the projection position. The marker serves as a reference target that can be remotely observed and measured, eliminating the need for personnel to manually access high or dangerous positions. The marker's position and orientation provide visual feedback for beam alignment without requiring direct human intervention at the alignment location.
Solution Approach 2:
The patent replaces manual mechanical alignment operations with an optical measurement system. By using the alignment marker and optical beam intersection, the system allows remote alignment verification through optical means rather than requiring physical manual adjustment at the installation location, thereby improving safety and operational efficiency.
2Device complexity
If a single projector system is used to display stereoscopic images, then device complexity is reduced, but brightness is significantly reduced due to beam splitting
Solution Approach 1:
The patent employs a high-reflectivity mirror (with reflectivity of 90% or more) to maintain the continuity and intensity of the reflected beam. By minimizing energy loss during reflection, the system ensures that the reflected beam retains sufficient brightness for effective projection, thereby compensating for the inherent brightness reduction in single-projector beam-splitting systems.
3Illumination intensity
If high-reflectivity mirrors are used for beam reflection, then brightness is improved, but alignment precision requirements become more stringent
Solution Approach 1:
The alignment marker serves as a precise intermediary reference that enables accurate alignment verification. By providing a clearly defined target position and orientation, the marker allows for precise measurement of beam intersection without requiring complex alignment procedures, thereby meeting the stringent precision requirements imposed by high-reflectivity mirrors.
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 enhances brightness and efficiency by enabling remote control of beam alignment, ensuring accurate overlap of beams to form a single image, thereby improving the quality and convenience of stereoscopic image display, especially in large spaces and at elevated installations.
Implementation Method 1
a polarizing beam splitter for spatially splitting image light emitted by a projector into at least one transmitted beam and at least one reflected beam based on polarized components
Implementation Method 2
a remote-control alignment type reflecting member for adjusting the path of the reflected beam in response to a second remote control signal such that the reflected beam overlaps the transmitted beam
Data Source
AI summary
A stereoscopic image display apparatus that is capable of being efficiently aligned using a remotely controlled alignment function and a method of displaying a stereoscopic image using the same are disclosed. The stereoscopic image display apparatus includes a polarizing beam splitter for spatially splitting image light emitted by a projector into at least one transmitted beam and at least one reflected beam based on polarized components, at least one modulator for adjusting the transmitted beam and the reflected beam such that the transmitted beam and the reflected beam have different polarization directions when a left image and a right image are projected by the transmitted beam and the reflected beam, an angle adjustment unit for adjusting the position on a screen on which the transmitted beam is projected in response to a first remote control signal, a remote-control alignment type reflecting member for adjusting the path of the reflected beam in response to a second remote control signal such that the reflected beam overlaps the transmitted beam projected on the position on the screen adjusted in response to the first remote control signal in order to form a single image, and a remote controller remotely connected to the angle adjustment unit and the remote-control alignment type reflecting member for transmitting the first remote control signal and the second remote control signal to the angle adjustment unit and the remote-control alignment type reflecting member, respectively.