Stereoscopic Display Color Wheel Rotation Frequency Control
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Solution Overview
Problem
Conventional 3D display technologies often suffer from a color breaking phenomenon when the viewer's eyeball moves, affecting display quality by presenting incorrect colors instead of mixed colors, such as seeing red, green, and blue instead of white.
Innovation Solution
A stereoscopic display system with a projection device and stereoscopic glasses, where the rotation device, such as a color wheel, is controlled by a circuit to rotate at 2n times the image input frequency, ensuring n rotations during each period for left-eye and right-eye image reception, increasing color change frequency to prevent color breaking without impacting brightness and enhancing display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rotation device rotates at the image input frequency, then the display system can maintain image brightness, but color breaking phenomenon occurs when the viewer's eyeball moves
Solution Approach 1:
The patent applies periodic action by rotating the color wheel at 2n times the image input frequency, creating n color cycles during each eye's image reception period. This periodic color transformation prevents the color breaking phenomenon by ensuring that color changes occur at a frequency that matches the temporal resolution of human vision, thereby maintaining perceived color accuracy even when the viewer's eyeball moves.
Solution Approach 2:
The patent changes the rotation speed parameter of the color wheel from the image input frequency to 2n times the image input frequency. This parameter change increases the color transformation frequency, which resolves the color breaking issue by ensuring that multiple color cycles occur during each stereo image period, making color shifts imperceptible to the human eye during eyeball movement.
2Object-affected harmful factors
If the rotation device increases rotation speed to prevent color breaking, then color breaking is avoided, but image brightness may be affected
Solution Approach 1:
The periodic rotation of the color wheel at 2n times the image input frequency ensures that color information is presented in a rhythmic pattern that matches the temporal characteristics of human vision. This periodic action maintains image brightness because the duty cycle and light output duration remain consistent, while the increased frequency prevents color breaking by exceeding the temporal resolution threshold of human vision.
Solution Approach 2:
The color wheel maintains continuous rotation without interruption, ensuring that color information is continuously presented to both eyes during their respective reception periods. This continuity of useful action preserves image brightness while the increased rotation frequency (2n times) ensures that color transitions are smooth and imperceptible, thereby preventing color breaking without sacrificing brightness.
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
Effectively prevents color breaking and improves the display quality of stereoscopic images by increasing the color change frequency during left-eye and right-eye image reception, maintaining image brightness.
Implementation Method 1
The rotation device is disposed on a transmission path of a light beam and converts the light beam to a color beam
Data Source
AI summary
A stereoscopic display system and a control method of the stereoscopic display system are provided. A rotation device is controlled to rotate at 2n times an image input frequency, so that the rotation device respectively completes n rotations during a period in which stereoscopic glasses receive a left-eye image and a period in which the stereoscopic glasses receive a right-eye image.