Self-scanning projection measuring device for two-dimensional configuration outline

A measuring device and self-scanning technology, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of large system structure and motion error, etc., and achieve the effects of short optical path, simple manufacturing, and simple optical noise.
CN1746619AInactive Publication Date: 2006-03-15HUAZHONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Publication Date
2006-03-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

A self ¿C scanning and projecting measurement device of two- dimensional configuration consists of laser, extender lens, light slot, cylindrical lens set, CCD and controller on the same light path in sequence. It is featured as setting light slot on linear scanner for moving said slot along X direction, making light slot length be greater than Y directional width of geometric form section to be measured and making light slot width be less than X directional measurement resolution rate; forming cylindrical lens set by cylindrical lens or cylindrical lens and imaging lens; using controller to control movement and to control collection and process of measurement signal.
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Description

technical field

[0001] The invention relates to a projection measurement device, in particular to a two-dimensional profile self-scanning projection measurement device with different length and width direction measurement resolutions for back-projected parallel light. Background technique

[0002] As a powerful projection imaging measurement tool for obtaining two-dimensional geometric shapes, the two-dimensional profile optical scanning device has been widely used in geometric shape measurement research. In recent years, scholars have conducted a lot of research on this technology, and have been mainly focusing on two-dimensional contour scanning devices with the same measurement resolution in the length and width directions.

[0003] A typical two-dimensional profile projection imaging measurement method is proposed in the article "Detection Method of Car Lamp Contact Sheet" (see "Optical Instruments", 1998, 20(2): 3-7). It is characterized by using an area array CCD (cha...

Claims

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