Pivoting Mirror for High-Speed 3D Object Recording
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Solution Overview
Problem
Existing devices for visually recording two-dimensional or three-dimensional objects suffer from low precision and slow image recording speeds, particularly when reading codes on circuit boards with components at different positions, due to the use of multiple cameras or cameras that need to be moved, leading to complex constructions and potential distortions.
Innovation Solution
A device with a single camera and a rapidly adjustable or pivotable mirror element that allows precise positioning of objects within the recording area, enabling high-speed and high-precision image capture by pivoting the mirror element around one or two axes without moving the camera, thus increasing the speed and precision of object recording.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple cameras or movable cameras are used to record objects at different positions, then the recording coverage is improved, but the device complexity and recording speed deteriorate
Solution Approach 1:
The recording area is segmented into multiple zones that can be sequentially accessed by pivoting the mirror element. Instead of using multiple cameras simultaneously, a single camera records different segments of the object by changing the optical path direction through mirror pivoting, thereby covering the entire object area while maintaining simple device structure.
Solution Approach 2:
The patent introduces a new dimension of optical path control by pivoting the mirror element around axes, allowing the single camera to access different spatial positions of the object. This dimensional transformation of the optical path enables comprehensive coverage without adding multiple cameras or moving the camera itself.
2Area of stationary object
If cameras are moved to capture objects at different positions, then the recording coverage is improved, but the recording speed and precision deteriorate
Solution Approach 1:
Instead of moving the camera to capture different positions, the patent inverts the approach by keeping the camera stationary and moving the mirror element to redirect the optical path. This inversion allows the camera to remain fixed while still achieving comprehensive coverage, thereby maintaining high recording speed and precision.
Solution Approach 2:
The mirror element serves as an intermediary between the stationary camera and the object. By pivoting the mirror, the optical path is redirected to capture different positions of the object without moving the camera itself, thus maintaining both high speed and precision while achieving comprehensive coverage.
3Area of stationary object
If cameras are moved to capture objects at different positions, then the recording coverage is improved, but the measurement precision deteriorates
Solution Approach 1:
The patent inverts the conventional approach by keeping the camera stationary and moving the mirror element instead. This ensures that the camera's optical system remains fixed, maintaining consistent focus and high measurement precision across all recorded positions, while still achieving comprehensive coverage through mirror pivoting.
4Area of stationary object
If multiple cameras are used to inspect objects, then the recording coverage is improved, but the device complexity increases
Solution Approach 1:
The single camera is designed to perform multiple functions by combining it with a pivoting mirror element. The camera can capture different positions, angles, and details of the object by redirecting the optical path through mirror pivoting, thereby achieving multi-functional capability equivalent to multiple cameras while maintaining simple device structure.
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 rapid and precise recording of objects, achieving speeds of at least 20 objects per second with a precision of 1/100 mm or better, allowing for efficient detection of flaws and codes on circuit boards, and can handle larger objects like circuit boards in a single scanning procedure without complex constructions.
Implementation Method 1
a single camera and at least one adjustable or pivotable mirror element are provided
Data Source
AI summary
A device for visually recording two-dimensional or three-dimensional objects, which comprises a camera for recording images of the two-dimensional or three-dimensional object and which is provided with, can be connected to or is connected to at least one evaluation unit for evaluating the recorded images. A single camera and at least one adjustable or pivotal mirror element are provided. According to the method for visually recording two-dimensional or three-dimensional objects while using a device of the aforementioned type, a camera and at least one adjustable mirror element are arranged relative to one another so that the objects to be recorded are situated in the coverage area of the at least one mirror element. The adjustable mirror element for recording the objects to be recorded is displaced or pivoted about one or two axes with an adjustable velocity. The camera records the objects projected in the at least one mirror element, and the recorded objects are routed from the camera to an evaluation unit for evaluation and are processed.