Single-Lens 2D/3D Camera with Disparity and Convergence Control
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Solution Overview
Problem
Existing multi-view imaging systems lack the capability to independently control convergence angle and interocular distance, and none can switch between 2D and 3D imaging modes using a single lens.
Innovation Solution
A single-lens two-channel reflector with laterally displaceable outward and inward mirrors, controlled by separate mechanisms to adjust intraocular distance and convergence angle, allowing switching between 2D and 3D imaging modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the convergence angle of the optical axes of the virtual cameras is made smaller (convergence point further away), then the convergence angle is reduced, but the interocular distance between the virtual cameras becomes smaller and the disparity between left and right views is reduced
Solution Approach 1:
The patent divides the control of convergence angle and interocular distance into independent segments. The outward mirrors are controlled separately from the inward mirrors, allowing the convergence angle to be adjusted without necessarily changing the interocular distance. This segmentation enables independent optimization of both parameters, resolving the contradiction where previously they were coupled.
Solution Approach 2:
The patent introduces dynamic control mechanisms that allow real-time adjustment of mirror positions. The outward mirrors can be swiveled about their vertical centerlines independently, and the inward mirrors can be positioned at variable locations along the optical axis. This dynamic capability enables the system to maintain optimal disparity while adjusting convergence angle, and vice versa.
2Ease of operation
If the outward mirrors are swiveled about their vertical centerlines to adjust convergence angle, then the convergence angle control is improved, but the device complexity increases
Solution Approach 1:
The patent designs the mirror control mechanisms to serve multiple functions. The same swivel mechanism that adjusts the convergence angle also enables the outward mirrors to be positioned at different locations along the optical axis. This multi-functionality reduces the need for separate control mechanisms, thereby limiting the increase in device complexity while maintaining ease of operation.
3Device complexity
If a single lens is used for both 2D and 3D imaging, then the device complexity is reduced, but the capability to switch between imaging modes is lost
Solution Approach 1:
The patent employs dynamic mirror positioning to enable mode switching. In 3D mode, the outward and inward mirrors are positioned to create separate left and right imaging channels. In 2D mode, the mirrors are repositioned to allow a single imaging channel through the central inlet. This dynamic reconfiguration allows a single lens to serve both 2D and 3D imaging functions without requiring multiple lenses or complex switching mechanisms.
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
Enables precise control of disparity and convergence angle, facilitating simultaneous 2D and 3D imaging with a single imager, addressing the limitations of prior art by allowing independent adjustment of imaging parameters and mode switching.
Implementation Method 1
Within each channel, one of the mirrors takes incoming light rays and reflects the light rays to the other mirror for it to output the light rays to an imager such as a camera, CCD, etc. through the lens.
Implementation Method 2
A second controller alters the deflection angle of the inward mirror units thus adjusting the convergence angle
Data Source
AI summary
A single-lens two-channel reflector provides the capability to switch between two-dimensional and three-dimensional imaging. The reflector includes laterally displaceable outward reflectors and displaceable inward reflectors that can simultaneously provide left and right images of a scene to an imager, and controllers for controlling relative distance between the outward and the inward reflectors, and for controlling deflection angle of the inward reflectors, so as to enable the adjustment of disparity and convergence angle.