Stereoscopic Display Device Using Polarization Optical Member
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Solution Overview
Problem
Conventional stereoscopic display devices fail to produce sharp and realistic 3D images due to reduced luminance caused by the first image passing through a transparent display, resulting in a lack of vividness and realism.
Innovation Solution
A stereoscopic display device comprising a first and second display, with a semi-transmissive optical member that includes a polarization transmissive axis for transmitting the first image and a polarization reflective axis for reflecting the second image, allowing for enhanced luminance and realism by using a dual brightness enhancement film with high transmittance and reflectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transparent display is used to display the second image, then the watcher can see the second image, but the luminance of the first image is reduced
Solution Approach 1:
The patent changes the optical parameters of the second display from fully transparent to semi-transmissive with specific polarization properties. By controlling the transmittance and reflectance characteristics, the first image maintains high luminance while the second image is effectively displayed through polarization-based image separation.
Solution Approach 2:
The patent uses a composite optical system combining a semi-transmissive optical member with polarization-selective properties. This composite structure integrates both transmission and reflection functions in a single component, allowing the first image to pass through with high luminance while the second image is reflected to the watcher.
2Manufacturing precision
If a transparent display is used, then the device structure is simplified, but the stereoscopic image lacks sharpness and realism
Solution Approach 1:
The patent optimizes the optical parameters of the semi-transmissive optical member, specifically controlling transmittance and reflectance ratios. This parameter optimization ensures that the first image maintains sufficient luminance for sharp display while the second image achieves adequate brightness for realistic stereoscopic effect.
Solution Approach 2:
The patent replaces the mechanical arrangement of separate transparent displays with an optical system based on polarization and semi-transmissive properties. This substitution achieves image separation and depth perception through optical principles rather than mechanical positioning, improving image sharpness while managing device complexity.
3Illumination intensity
If the first image passes through the transparent display, then the device structure is simplified, but the luminance is reduced
Solution Approach 1:
The patent extracts the image separation function from the display structure itself and assigns it to a dedicated semi-transmissive optical member. This extraction allows the first image to pass through the optical member with minimal interference, maintaining high luminance, while the second image is handled separately through reflection.
Solution Approach 2:
The semi-transmissive optical member acts as an intermediary between the first and second displays. It mediates the light paths by transmitting the first image with high efficiency while reflecting the second image, thereby preserving luminance of the first image and enabling effective display of the second image simultaneously.
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 significantly enhances the luminance and resolution of the stereoscopic image, enabling the creation of vivid and realistic 3D visuals with improved depth perception.
Implementation Method 1
a semi-transmissive optical member including a polarization transmissive axis transmitting the first image and a polarization reflective axis reflecting the second image
Implementation Method 2
a polarization reflective axis reflecting the second image
Data Source
AI summary
Disclosed is a stereoscopic display device for realizing a sharp and realistic stereoscopic image. The stereoscopic display device includes a first display displaying a first image, a second display displaying a second image, and a semi-transmissive optical member including a polarization transmissive axis transmitting the first image and a polarization reflective axis reflecting the second image.