Rotating Cam Focus Adjustment for Moving Objects
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Solution Overview
Problem
Conventional camera technologies face challenges in maintaining high-speed focus control to capture clear images of rapidly moving objects, particularly when objects are on conveyer belts, as existing methods can cause physical defects and are not suitable for rapid adjustments.
Innovation Solution
A camera system that includes a lens, a mirror, and a cam driven by a rotating motor, which adjusts the focal length by moving the mirror or sensor using a rotational motion, allowing for automatic focus adjustment based on the object's distance and speed, with an elastic member to prevent shaking and enhance control accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional focus control methods are used, then the camera can maintain focus for stationary objects, but the focus adjustment speed is too slow for rapidly moving objects
Solution Approach 1:
The patent implements dynamic focus adjustment by replacing conventional slow focus mechanisms with a rotating motor-driven cam system that enables rapid mirror movement. The cam's rotational motion dynamically adjusts the mirror position in real-time, allowing the camera to track rapidly moving objects while maintaining image quality through continuous, high-speed focus adaptation.
Solution Approach 2:
The patent substitutes conventional mechanical focus control with a rotating motor-driven system. The rotating motor converts rotational motion into linear mirror displacement through the cam mechanism, achieving faster and more precise focus adjustment compared to traditional mechanical systems. This mechanical substitution enables high-speed focus control suitable for capturing rapidly moving objects.
2Measurement precision
If the camera uses a simple focus mechanism, then the device complexity is reduced, but the focus control precision deteriorates
Solution Approach 1:
The patent employs a cam with a specifically designed curved profile that translates rotational motion into precise linear mirror displacement. The cam's curved geometry enables accurate focus control by maintaining a linear relationship between object distance changes and mirror position adjustments, achieving high measurement precision through geometric design rather than complex electronic control systems.
Solution Approach 2:
The patent changes the operational parameters of the focus mechanism by using a rotating motor-driven cam system that provides both speed and precision. The cam's incremental value is specifically determined to ensure linear focal length adjustment, transforming the focus mechanism from a simple or complex state to an optimized state that achieves both precision and controlled complexity.
3Adaptability or versatility
If the camera adjusts focus for linearly moving objects, then the focus accuracy is improved, but the system cannot handle objects with non-linear motion patterns
Solution Approach 1:
The rotating cam mechanism provides dynamic adaptability by allowing the focus adjustment speed and pattern to vary with the object's motion characteristics. The cam's rotational profile can be designed to match different motion patterns, enabling the system to adapt to both linear and non-linear object movement while maintaining focus accuracy through real-time adjustment.
Solution Approach 2:
The patent creates a universal focus adjustment system that can handle various object motion patterns through the rotating motor-driven cam mechanism. By adjusting the cam's rotational characteristics, the same basic mechanism can accommodate different motion types, providing multi-functionality without sacrificing focus precision for any specific motion pattern.
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
Enables rapid and accurate focus adjustment on moving objects, reducing physical defects and improving image quality by linearly controlling the focal length in response to changing object distances, suitable for both line scan and area scan cameras.
Implementation Method 1
a lens configured to collect and transmit light received from a moving object
Implementation Method 2
a mirror configured to reflect the light transmitted via the lens
Implementation Method 3
a sensor configured to receive the light reflected by the mirror and convert the light into an image signal
Implementation Method 4
a cam configured to move the mirror forward and backward using a rotational motion thereof and adjust a focal length between the lens and the sensor
Data Source
AI summary
A camera configured to adjust a focus thereof on the basis of a rotating method and an object processing apparatus using the same are provided. The camera according to one embodiment moves a mirror between a lens and a sensor forward and backward, moves one side end of the sensor without a mirror, or moves the sensor forward and backward using rotation of a cam connected to a rotating motor to adjust a focal length between the lens and the sensor and adjust a focus of the camera onto a moving object.