Digital Microscope Automatic Focusing Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing digital microscopes rely on manual focusing, which introduces human subjective factors, resulting in slow focusing speed and low accuracy, especially in near and far focusing.
Innovation Solution
A digital microscope with an automatic focusing mechanism, comprising a housing, a lens assembly, a support, a sliding block, an image sensor, and a driving assembly, which uses ranging modules and a position sensor to assist in real-time distance measurement and precise image sensor movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual focusing is used, then the device complexity is reduced, but the focusing speed and accuracy deteriorate
Solution Approach 1:
The patent replaces manual mechanical focusing with an automated driving assembly that includes a motor and screw rod mechanism. This mechanical substitution eliminates human subjective factors while achieving both fast and accurate focusing through automated control of the image sensor position.
Solution Approach 2:
The system performs self-focusing by using the image sensor to detect image quality and automatically adjusting its position through the driving assembly. The microscope system serves itself by eliminating the need for external manual operation, achieving automatic focusing based on real-time image feedback.
2Speed
If the image sensor is moved closer to the lens assembly, then the focusing speed for near objects improves, but the focusing accuracy for far objects deteriorates
Solution Approach 1:
The patent implements dynamic focusing by enabling the image sensor to move along the optical axis through the driving assembly. This dynamic positioning allows the system to adapt to different object distances, achieving both fast near-focusing and accurate far-focusing by adjusting the sensor position based on real-time focusing requirements.
Solution Approach 2:
The system uses feedback from the image sensor to detect image quality and automatically adjusts the sensor position through the driving assembly. This closed-loop feedback mechanism ensures both fast and accurate focusing by continuously monitoring and adjusting based on actual imaging conditions.
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 automatic focusing system eliminates human subjective errors, achieving faster and more accurate focusing while improving user convenience and flexibility.
Implementation Method 1
the circuit board is mounted with ranging modules for measuring an object's distance
Implementation Method 2
a position sensor is mounted at a bottom of the acquisition plate, the position sensor being positioned via the positioning block
Implementation Method 3
the driving assembly includes a motor arranged at one end of the support and a screw rod connected to an output end of the motor; and an end of the screw rod connected to the motor passes through the sliding block and is threadedly connected to the sliding block
Data Source
AI summary
The present disclosure relates to the technical field of digital microscopes, and particularly to a digital microscope capable of automatic focusing, including a housing and a lens assembly arranged at a bottom of the housing. A focusing mechanism is mounted at an interior of the housing; the focusing mechanism includes a support vertically mounted at the interior of the housing, a sliding block movably arranged on the support and parallel to the lens assembly, and an image sensor mounted on the sliding block; and the support is mounted with a driving assembly for controlling the movement of the sliding block to move the image sensor close to or away from the lens assembly. Through the above arrangements, human subjective factors are avoided; an automatic focusing effect is realized, which considers not only a focusing speed but also a focusing accuracy; and the convenience of use is improved.