Optical System Driving Device Position Detection
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Solution Overview
Problem
Existing optical systems struggle to detect the precise position of movable bodies with three or more degrees of freedom, which is crucial for high-precision adjustments in applications like digital cameras, where accurate alignment and aberration correction are necessary.
Innovation Solution
An optical system driving device is developed, incorporating a movable body with integrally mounted light transmissive units and a detection unit that includes light-emitting and optical detectors. This configuration allows for precise position detection in each degree of freedom by analyzing light-receiving signals, enabling high-precision position adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional detection methods are used for movable bodies with three or more degrees of freedom, then the device complexity is reduced, but the measurement precision of position detection deteriorates
Solution Approach 1:
The patent merges multiple detection functions into a single integrated detection unit. The detection unit combines light-emitting units, optical detectors, and signal processing capabilities to detect positions in three or more degrees of freedom simultaneously. This integration allows high-precision position detection without requiring multiple separate detection systems, thus improving measurement precision while controlling device complexity.
Solution Approach 2:
The detection unit is designed with multi-functionality to handle complex spatial detection requirements. It can detect positions along multiple axes (three or more degrees of freedom) using a unified detection mechanism rather than separate detectors for each axis. This universal approach enables the system to achieve high measurement precision across all degrees of freedom without proportionally increasing device complexity.
2Measurement precision
If multiple separate detection systems are used for each degree of freedom, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple detection functions into a single integrated detection unit. The detection unit combines light-emitting units, optical detectors, and signal processing capabilities to detect positions in three or more degrees of freedom simultaneously. This integration allows high-precision position detection without requiring multiple separate detection systems, thus improving measurement precision while controlling device complexity.
3Manufacturing precision
If conventional alignment adjustment methods are used, then the ease of operation is maintained, but the manufacturing precision of optical axis alignment deteriorates
Solution Approach 1:
The patent implements feedback-based automatic alignment adjustment. The detection unit continuously monitors the positions of movable bodies with high precision, and this position information is fed back to control mechanisms that automatically adjust the alignment. This feedback loop enables high manufacturing precision for optical axis alignment while simplifying the operation, as the system self-corrects without requiring manual intervention.
Solution Approach 2:
The alignment adjustment system operates autonomously using self-service principles. The detection unit automatically detects position deviations, and the system performs self-correction through automated control mechanisms. This eliminates the need for complex manual alignment procedures, thereby achieving high manufacturing precision while maintaining ease of operation.
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 enables high-precision position control of movable bodies in multiple degrees of freedom, enhancing the accuracy of optical system adjustments and reducing the number of components required, thus improving the overall efficiency and precision of optical device operations.
Implementation Method 1
a light-emitting unit 131 that emits light toward the light transmissive unit 150, and an optical detector 132 that receives light emitted from the light-emitting unit 131 and passing through the light transmissive unit 150
Data Source
AI summary
An optical system driving device includes a movable body that is movable in at least three degrees of freedom, and a light transmissive unit integrally mounted to the movable body. The optical system driving device also includes a driving unit that moves the movable body in at least three degrees of freedom, and a detection unit that detects a position of the movable body in each of at least three degrees of freedom. The detection unit includes a light-emitting unit that emits light toward the light transmissive unit, and an optical detector that receives light emitted from the light-emitting unit and passing through the light transmissive unit and outputs a light-receiving signal based on the received light. The detection unit also detects a position of the movable body in each of at least three degrees of freedom based on the light-receiving signal from the optical detector.