Spectral Imaging Calibration for Lens Interchange and Zoom
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Solution Overview
Problem
Existing technologies face challenges in spectral imaging by the angle dependence of the liquid crystal device, specifically in lens interchange and calibration, limiting spectral imaging due to view change and lens interchange, and dynamic angle-of-view change.
Innovation Solution
A calibration method for spectral imaging using a lens, a liquid crystal device, and a polarizing element, the calibration method includes generating calibration data for a target lens that matches observation information with true spectral information, supporting dynamic angle-of-view change and lens interchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If calibration is performed according to a specific optical system or lens, then spectral imaging accuracy is improved, but lens interchangeability deteriorates
Solution Approach 1:
The patent creates a universal calibration method that works across multiple lenses and optical systems. By establishing a calibration approach that accounts for angle-dependent characteristics without being tied to a specific lens, the system achieves both spectral imaging accuracy and lens interchangeability. The calibration data structure and processing method are designed to be adaptable to different lenses while maintaining consistent performance.
2Measurement precision
If the incident angle is limited to maintain spectral imaging quality, then measurement precision is improved, but dynamic angle-of-view change capability deteriorates
Solution Approach 1:
The patent implements a dynamic calibration approach that adapts to changing incident angles. By incorporating angle information into the calibration process and using interpolation techniques to handle varying angles, the system maintains spectral imaging quality even when the angle of view changes dynamically during operation, such as during zooming operations.
Solution Approach 2:
The calibration method accounts for changes in incident angle as a variable parameter. By establishing calibration relationships that consider angle-dependent characteristics and using interpolation to handle intermediate angle values, the system maintains measurement precision across a range of angles rather than being restricted to a fixed angle.
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 method facilitates lens interchange and supports dynamic angle-of-view change in spectral imaging, enabling accurate spectral information generation despite changes in focal length due to zooming.
Implementation Method 1
spectral imaging using a liquid crystal device and a polarizing element
Implementation Method 2
a liquid crystal device, and a polarizing element
Implementation Method 3
light reflected from a measurement target or transmitted through the measurement target
Implementation Method 4
light reflected from a measurement target or transmitted through the measurement target
Data Source
AI summary
The present disclosure relates to a calibration method that makes it possible to facilitate angle-of-view change and lens interchange in spectral imaging using a liquid crystal device and a polarizing element. In a spectral imaging system in which a lens condenses incident light from a scene, and a liquid crystal device and a polarizing element generate a spectral image on the basis of a plurality of modulated images generated by modulating the incident light transmitting through the lens while changing an applied voltage to the liquid crystal device, calibration data is generated for a target lens to be calibrated that matches observation information corresponding to spectral information generated with use of the target lens with spectral information generated with use of a known lens. The present disclosure can be applied to a spectral imaging device using a liquid crystal device and a polarizing element.