Calibrating Double Optical Path Lens Systems for Image Uniformity
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Solution Overview
Problem
Existing methods for calibrating optical imaging lens systems fail to address non-uniformity issues across different optical systems, leading to inconsistent image quality due to variations in optical parameters such as lateral magnification, contrast, and image surface illumination.
Innovation Solution
A calibration apparatus and method for optical imaging lens systems with double optical paths, utilizing a first and second optical subsystem with equal back focal lengths, an optical path selector, reflector sets, and a sensor to alternately record and calibrate image data based on selected optical parameters of each subsystem, ensuring uniformity by adjusting the optical path selector's state to direct light either to or away from the sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single optical system is used for imaging, then the device complexity is reduced, but image non-uniformity and inconsistency across different optical systems occur due to manufacturing variations
Solution Approach 1:
The patent divides the optical system into multiple independent optical subsystems (first optical subsystem, second optical subsystem) that can be separately calibrated and controlled. Each subsystem has its own optical parameters that can be independently adjusted, allowing for precise control of image uniformity while maintaining overall system simplicity.
Solution Approach 2:
The patent introduces adjustable optical parameters (lateral magnification, contrast, image surface illumination, distortion) that can be changed to calibrate differences between optical systems. By modifying these parameters through the calibration module, image uniformity is improved without increasing the fundamental device structure complexity.
2Manufacturing precision
If multiple optical subsystems are used to improve image uniformity, then image consistency is improved, but the device complexity and calibration difficulty increase
Solution Approach 1:
The patent combines multiple optical subsystems into a unified imaging system where both subsystems work together to provide consistent images. The calibration module integrates the calibration processes for both subsystems, allowing them to be adjusted simultaneously to achieve uniformity without requiring separate complex calibration procedures for each subsystem.
Solution Approach 2:
The calibration module serves multiple functions: it calibrates both the first and second optical subsystems, adjusts multiple optical parameters (lateral magnification, contrast, illumination, distortion), and coordinates the optical path selector. This multi-functionality reduces the overall system complexity by consolidating calibration operations into a single integrated module.
3Manufacturing precision
If optical parameters are adjusted to calibrate image non-uniformity, then image quality consistency is improved, but the calibration process time increases
Solution Approach 1:
The patent performs calibration measurements and parameter adjustments in advance during the manufacturing process. By pre-calibrating the optical subsystems and storing the optimal parameters, the system can quickly adjust to different imaging conditions without requiring time-consuming calibration during actual operation, thus reducing overall calibration time.
Solution Approach 2:
The calibration module uses feedback from image quality measurements to automatically adjust optical parameters. By continuously monitoring image uniformity and making real-time adjustments, the system minimizes the time required for calibration compared to manual adjustment methods, achieving both high precision and efficient calibration process.
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 solution effectively improves image uniformity by calibrating differences between optical systems, ensuring consistent image quality by adjusting optical parameters and synchronizing the optical path selector's state to alternately record images from both subsystems.
Implementation Method 1
an optical path selector selectively having a light reflection state and a light passing state
Data Source
AI summary
This invention provides a calibration method and a corresponding apparatus for optical imaging lens system with double optical paths. The apparatus for optical imaging lens system with double optical paths comprises a first optical subsystem, a second optical subsystem and a calibration module. The calibration module receives a first image data from the first optical subsystem and a second image data from the second optical subsystem. The calibration module calibrates the first image data according to at least one selected optical parameter of the second optical subsystem, and calibrates the second image data according to at least one selected optical parameter of the first optical subsystem. The selected optical parameters of the first optical subsystem and the second optical subsystem are different.