3D Shape Measuring Device with Automatic Light and Focus Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Users unfamiliar with three-dimensional measurement find it challenging to acquire and analyze three-dimensional shape data using digital microscopes, as they require adjusting light sources and confirming data, which is not straightforward.
Innovation Solution
A shape measuring device with a light receiving section, a light projecting section that irradiates the object obliquely, and a control unit that processes images to generate three-dimensional shape data, allowing users to select between an application measurement mode for adjusting parameters and a simple measurement mode for automatic data acquisition and display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a digital microscope is used for three-dimensional measurement, then two-dimensional imaging capability is available, but three-dimensional shape data acquisition becomes complex and difficult for users
Solution Approach 1:
The system performs automatic focus adjustment and three-dimensional shape data acquisition without requiring manual intervention. The control unit automatically adjusts the focus of the light receiving section and acquires measurement images at multiple focal depths, enabling the system to serve itself and eliminating the need for user expertise in three-dimensional measurement operations.
Solution Approach 2:
The system pre-adjusts the light receiving section focus to a reference position before measurement begins. By performing focus adjustment and measurement planning in advance, the system prepares the optimal measurement configuration beforehand, reducing the operational complexity during actual measurement and making the process more user-friendly.
2Adaptability or versatility
If manual adjustment of light sources and parameters is required for three-dimensional measurement, then measurement flexibility is improved, but operation complexity increases
Solution Approach 1:
The system dynamically switches between different measurement modes (two-dimensional observation mode and three-dimensional measurement mode) and automatically adjusts measurement parameters based on the selected mode. The control unit adaptively controls the light receiving section and light projecting section according to the measurement requirements, providing flexibility without requiring manual parameter adjustment.
Solution Approach 2:
The system automatically changes measurement parameters such as focal depth, light projection angles, and image acquisition settings based on the selected measurement mode. By programmatically adjusting these parameters, the system maintains measurement flexibility and adaptability while eliminating the need for users to manually configure complex parameters.
3Ease of operation
If multiple measurement modes are provided, then user accessibility is improved, but system complexity increases
Solution Approach 1:
The system integrates multiple measurement functions (two-dimensional observation and three-dimensional shape measurement) into a single platform. The light receiving section serves dual purposes by capturing images in both two-dimensional observation mode and three-dimensional measurement mode, eliminating the need for separate dedicated devices and reducing overall system complexity.
Solution Approach 2:
The system combines the light receiving section and light projecting section into an integrated measurement system. By merging the observation and measurement functions in one system and using the same light receiving section for both two-dimensional and three-dimensional operations, the system reduces structural complexity while providing multiple measurement modes for improved user accessibility.
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 device simplifies the acquisition of three-dimensional shape data, making it easily accessible to users by automating the process in simple measurement mode, reducing the complexity of parameter adjustments and enabling immediate display of realistic three-dimensional texture images.
Implementation Method 1
a light projecting section that irradiates the object with light obliquely from above
Implementation Method 2
a light receiving section that has an observation center axis extending toward an object
Data Source
AI summary
Provided is a shape measuring device capable of making a user to feel that three-dimensional shape data is easily acquirable. Right and left light projecting sections are individually turned on to automatically adjust exposure time or brightness of illumination so that an image displayed in a display section has the optimum brightness. Further, scanning is performed with a plurality of striped patterns using the light projecting section, and in synchronization therewith, a plurality of striped images are acquired by a camera. Subsequently, a 2D texture image of an object is acquired by using ring illumination or all-white uniform illumination of the light projecting section. A PC performs image processing and an analysis on the acquired image data with a measurement algorithm, to generate stereoscopic shape data. Further, a 3D texture image generated by mapping the two-dimensional texture image onto the stereoscopic shape data is displayed in a display section (monitor).