Variable Focal Length Lens Combined Image Detection Cycle
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Solution Overview
Problem
Existing variable focal length lens devices face challenges in achieving sufficient image quality at multiple focal lengths while minimizing image detection time, particularly due to the limitations of single-plane and multi-plane image-detecting operations which either result in image deterioration or prolonged detection times.
Innovation Solution
A variable focal length lens device and method that incorporate a combined mode of image detection, combining multi-plane and single-plane image-detecting operations to set focal lengths within a cycle, allowing for efficient image acquisition at multiple focal lengths by reducing the number of single-plane operations and optimizing image detection time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If multi-plane image-detecting operation is used to obtain images at multiple focal lengths simultaneously, then image detection time is reduced, but image quality deteriorates due to superimposition of in-focus and out-of-focus images
Solution Approach 1:
The patent segments the image detection process into two distinct operations: multi-plane image-detecting operation for capturing images at multiple focal lengths simultaneously, and single-plane image-detecting operation for capturing high-quality images at specific focal lengths. This segmentation allows the system to leverage the speed advantage of multi-plane operation while maintaining the quality advantage of single-plane operation through selective application of each method
Solution Approach 2:
The patent merges the multi-plane image-detecting operation and single-plane image-detecting operation into a hybrid combined mode. The control unit intelligently selects and combines these two operations based on the specific imaging requirements, allowing the system to achieve both rapid image detection and high image quality by appropriately mixing the advantages of both methods
2Measurement precision
If single-plane image-detecting operation is used to maintain high image quality at a single focal length, then image quality is preserved, but image detection time increases when multiple focal lengths are required
Solution Approach 1:
The patent introduces dynamic adaptability by enabling the control unit to switch between single-plane and multi-plane image-detecting operations based on real-time imaging requirements. This dynamic approach allows the system to use single-plane operation for high-quality requirements at specific focal lengths while transitioning to multi-plane operation when speed is prioritized, optimizing the balance between quality and time
3Measurement precision
If frame-by-frame image detection is performed at multiple focal lengths using single-plane operations, then sufficient image quality is achieved at each focal length, but total image detection time is prolonged
Solution Approach 1:
The patent employs periodic action by implementing a hybrid detection cycle that alternates between multi-plane and single-plane operations. The control unit periodically switches between these modes based on the detection progress and requirements, allowing the system to efficiently capture images at multiple focal lengths by combining the rapid multi-plane captures with selective single-plane refinements, thereby improving overall detection speed while maintaining quality
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 combined mode enables high image quality at multiple focal lengths while significantly reducing image detection time, outperforming traditional frame-by-frame methods by allowing image detection to be completed in a shorter timeframe.
Implementation Method 1
The liquid lens system includes a cylindrical oscillator made of a piezoelectric material that is immersed in a transparent liquid. When an alternating-current (AC) voltage is applied to an inner circumferential surface and an outer circumferential surface of the oscillator of the liquid lens system, the oscillator expands and contracts in a thickness direction thereof to oscillate the liquid inside the oscillator.
Implementation Method 2
When the frequency of the applied voltage is tuned to an intrinsic frequency of the liquid, a concentric standing wave is created in the liquid to form concentric regions of different refractive indexes around a center axis of the oscillator.
Implementation Method 3
When light is introduced into the oscillator along a center axis thereof in this state, the light follows a diffusing or converging path according to the refractive index of each of the concentric regions.
Data Source
AI summary
A variable focal length lens device includes an image-detection-condition setting unit configured to set image detection conditions. The image-detection-condition setting unit is configured to set, as image detection conditions, a combined mode of repeating an image detection loop including at least one multi-plane-image-detecting operation and at least one single-plane-image-detecting operation. In the multi-plane-image-detecting operation, a plurality of values of the focal length, at each of which the image detection is performed, are set in one cycle in which the focal length of the variable focal length lens is varied. In the single-plane-image-detecting operation, a single value of the focal length, at which the image detection is performed, is set in one cycle in which the focal length of the variable focal length lens is varied.