Double-field variable-focus three-dimensional measurement system

A technology of three-dimensional measurement and variable focus, which is applied in the direction of measuring devices, instruments, and optical devices, etc., can solve the problem that it is difficult to take into account the imaging accuracy and imaging field of view of a single system, and achieve dynamic three-dimensional visual imaging with continuous variable angles, improve Accuracy, effects of avoiding time lag and errors
CN103134444AInactive Publication Date: 2013-06-05TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
TONGJI UNIV
Publication Date
2013-06-05
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention relates to a double-field variable-focus three-dimensional measurement system. The system comprises a primary-secondary mirror imaging measuring system, a two-dimensional tracking rotating-mirror device and an adaptive control system. The primary-secondary mirror imaging measuring system is composed of a telephoto subsystem, a short-focus subsystem and a launching light source. The telephoto is composed of a main lens, a first spectroscope, a second spectroscope and a detector. The short-focus system is composed of the main lens, the first spectroscope, the second spectroscope and the detector. The two-dimensional tracking rotating-mirror device is composed of a reflector, a electric rotating motor, a regulating handle, an upper half shaft, a lower half shaft and a horizontal shaft. The adaptive control system is composed of a computer, an input and output (I / O) control circuit, an electromotor and a signal processing and controlling circuit. The system has the advantages of being tight in arrangement, high in measuring efficiency, convenient to measure and is suitable for the three-dimensional measuring of moving and static objects.
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Description

technical field

[0001] The invention relates to a three-dimensional measuring device, in particular to a dual-field variable-focus three-dimensional measuring system. Background technique

[0002] Commonly used object 3D data acquisition methods can be divided into two categories: contact and non-contact. The advantages of the contact measurement method are high measurement accuracy, good repeatability, and strong adaptability, but it cannot perform precise measurements on soft objects, and the measurement speed is slow, the measurement data density is low, and the measurement process requires manual intervention. These shortcomings limit it. The application of the non-contact measurement method is to obtain the three-dimensional information of the object through some physical phenomenon that interacts with the surface of the object, such as sound, light, electromagnetic, etc., among which the modern three-dimensional shape measurement method developed by applying the optica...

Claims

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