3D Display Lens Array with Predictive User Tracking
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Solution Overview
Problem
Current 3D display technologies, such as the shutter glass method and glassless methods, have limitations including restricted viewing angles and potential for 3D image flickering and crosstalk when the user is in motion.
Innovation Solution
A system and method that senses user location using image frames, calculates user movement velocity, predicts future locations, and adjusts 3D image display by moving pixel or sub-pixel positions to maintain a stereoscopic effect while the user moves, preventing flickering and crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shutter glass method is used to display 3D images, then stereoscopic sensation is provided to the user, but the user must wear additional equipment such as polarizing glasses
Solution Approach 1:
The patent removes the requirement for shutter glasses by extracting the essential function of delivering different images to left and right eyes directly through spatial separation on the display screen, using a lens array to guide light paths without requiring active shutter glasses
Solution Approach 2:
The patent introduces a lens array as an intermediary component between the display screen and the user's eyes, which guides light from specific screen regions to specific eyes, replacing the need for shutter glasses as the mediating device
2Ease of operation
If the glassless method is used to display 3D images, then no additional equipment is required, but the user can view the 3D image only from a particular position
Solution Approach 1:
The patent implements dynamic adjustment of the lens array's focal length or position based on the user's eye position, allowing the system to adapt to different viewing angles and maintain proper image guidance to each eye as the user moves
Solution Approach 2:
The patent adds a degree of freedom by making the lens array adjustable in position or focal length, transforming a static glassless display into a dynamic system that can accommodate users at different positions and angles
3Adaptability or versatility
If the user moves while viewing a 3D image, then the user can change position, but 3D image flickering and crosstalk occur
Solution Approach 1:
The patent incorporates feedback mechanisms that detect user eye position and movement, then adjust the lens array or display content in real-time to maintain proper image guidance to each eye, preventing flickering and crosstalk during user movement
Solution Approach 2:
The patent performs preliminary calculation and adjustment of image positions and lens focal lengths based on predicted user movement or current eye position, preparing the system in advance to maintain proper stereoscopic presentation as the user moves
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
Extends viewing angles and prevents 3D image flickering and crosstalk by dynamically adjusting the display based on predicted user movement, enhancing the user experience.
Implementation Method 1
capturing an image of the user, detecting a location of the user using an image frame included in a captured image
Implementation Method 2
a distance value sensed via infrared light
Implementation Method 3
a distance value sensed via radio wave
Data Source
AI summary
A system, apparatus, and method for displaying a 3D image and a location tracking device are provided. A location tracking unit receives an image frame acquired by capturing an image of a user, detects a location of the user using the received image frame, calculates a movement velocity of the user using the detected location of the user and at least one of previously detected locations of the user, predicts a location of the user at time point which a predetermined time elapses using the detected location of the user and the calculated movement velocity, and calculates a 3D image change amount based on the predicted location of the user. An image processing unit performs a control operation to display a 3D image based on the calculated 3D image change amount.