3D Imaging Device Polarizer Group Transparent Surface Reconstruction
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Solution Overview
Problem
Current three-dimensional stereoscopic imaging technologies face challenges in accurately reconstructing transparent and highly reflective surfaces, and are susceptible to environmental and light source interference.
Innovation Solution
A three-dimensional imaging device and method that utilize a lens group, beam-splitting prism group, polarizer group, and sensor group to capture and process light beams at different polarization angles, allowing for the reconstruction of object surfaces even when they are transparent or highly reflective.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If active imaging technology is used for three-dimensional stereo imaging, then imaging capability is achieved, but the reconstruction accuracy of transparent and smooth surfaces deteriorates
Solution Approach 1:
The patent introduces a polarizer group as an intermediary component between the beam-splitting prism group and the sensor group. This polarizer group converts the light beams into polarized light with specific polarization angles before they reach the sensors, enabling accurate capture of surface normal information even from transparent and highly reflective surfaces that were previously difficult to reconstruct accurately.
2Reliability
If conventional three-dimensional imaging methods are used, then imaging is achieved, but susceptibility to environmental and light source interference increases
Solution Approach 1:
The patent changes the polarization angle parameter of the light beams using the polarizer group. By controlling the polarization angle to be one of the preset angles (such as 0°, 45°, 90°, or 135°), the system creates distinct signal characteristics that are less susceptible to interference from environmental factors and light source changes, thereby improving imaging reliability.
3Measurement precision
If multiple polarizers are used to capture different polarization angles, then surface reconstruction accuracy improves, but device complexity increases
Solution Approach 1:
The patent segments the imaging system into distinct functional groups: a lens group for light collection, a beam-splitting prism group for separating light paths, a polarizer group for converting light to specific polarization angles, and a sensor group for capturing the polarized light. This segmentation allows each component to perform its specific function efficiently while maintaining overall system manageability despite the increased number of components.
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 proposed solution improves the accuracy of three-dimensional imaging by effectively handling transparent and highly reflective surfaces, while also reducing the complexity of the device structure and minimizing interference from external factors.
Implementation Method 1
a lens group, gathering light beams to output a first light beam and a second light beam towards a first direction
Implementation Method 2
the first beam-splitting prism transmits and reflects the first light beam to output a first transmitted light beam towards the first direction and a first reflected light beam towards a second direction
Implementation Method 3
the first beam-splitting prism transmits and reflects the first light beam to output a first transmitted light beam towards the first direction
Implementation Method 4
the polarizer group converts the transmitted light beam or the reflected light beam into a polarized light of a preset polarization angle
Implementation Method 5
each sensor obtains the polarized light of the preset polarization angle output from each polarizer to form an image
Data Source
AI summary
A three-dimensional imaging device includes a lens group configured for gathering light beams to output a first light beam and a second light beam towards a first direction; a beam-splitting prism group provided on a side of the lens group that outputs the light beams for transmitting and reflecting a first light beam and a second light beam; a polarizer group including at least three polarizers provided on a side of the beam-splitting prism group that outputs a light beam; the polarizer group is configured for converting the transmitted light beam or the reflected light beam into a polarized light of a preset polarization angle; and a sensor group including at least three sensors, a position of each sensor corresponds to a position of each polarizer, each sensor is configured to obtain the polarized light of the preset polarization angle output from each polarizer to form an image.