Autostereoscopic Display Viewing Distance Control
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Solution Overview
Problem
Existing autostereoscopic displays have a fixed optimal viewing distance, leading to 3D crosstalk when viewers move, and existing methods for controlling this distance do not accurately account for the refractive index of optical elements, resulting in suboptimal stereoscopic image quality.
Innovation Solution
A multi-view autostereoscopic display system that includes an optical element on a display panel, an optimal viewing distance control device to adjust primary and secondary view images based on viewer position, and a 3D formatter to map pixel data, ensuring accurate image separation and quality even when the viewer is not at the optimal distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the optimal viewing distance is fixed based on constant back length and focal length, then the display structure is simple and manufacturing is easy, but the viewer experiences 3D crosstalk when moving from the optimal position and the viewing flexibility is limited
Solution Approach 1:
The patent applies the dynamics principle by making the back length adjustable rather than fixed. The back length adjustment unit enables the distance between the pixel array and the lens to be dynamically changed, allowing the optimal viewing distance to be adapted to different viewing conditions and viewer positions, thereby eliminating 3D crosstalk while maintaining a relatively simple optical system structure.
2Adaptability or versatility
If the back length is changed to adjust optimal viewing distance, then the viewing distance can be adjusted, but the optical system becomes more complex and manufacturing becomes difficult
Solution Approach 1:
The back length adjustment unit implements dynamic adjustment of the back length, enabling the display to adapt to different viewing distances without requiring complete redesign of the optical system. This dynamic approach provides viewing distance adaptability while maintaining manufacturing feasibility through a modular adjustment mechanism.
3Measurement precision
If existing control methods are used without considering refractive index, then the control algorithm is simple, but the optimal viewing distance calculation is inaccurate and image quality deteriorates
Solution Approach 1:
The patent applies the feedback principle by incorporating the refractive index of the lens into the optimal viewing distance calculation algorithm. The control unit uses this refined calculation, which accounts for optical refraction effects, to accurately determine and adjust the optimal viewing distance, thereby improving measurement precision while managing algorithm complexity through systematic integration of refractive parameters.
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 maintains stereoscopic image quality and reduces 3D crosstalk by dynamically adjusting view images based on viewer position, using real-time sensor data and refractive angle calculations to ensure accurate image separation and display.
Implementation Method 1
the autostereoscopic display installs an optical element, such as a parallax barrier or a lenticular lens (hereinafter abbreviated to 'lens'), in front of or behind a display screen and separates optical axes of a left eye image and a right eye image
Data Source
AI summary
A display including an optical element disposed on a pixel array of a display panel; an optimal viewing distance control device configured to adjust primary view images seen through both eyes of a viewer to a first view image and second view image based on a viewer's position information sensed by a sensor, to automatically adjust other view images between the primary view images to view images separated at regular intervals, and to produce a view map using the adjusted primary view images and the adjusted other view images between the primary view images; a 3D formatter configured to map pixel data of a multi-view image based on the view map received from the optimal viewing distance control device; and a display panel driving circuit configured to write the pixel data of the multi-view image received from the 3D formatter to the display panel.