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Three-dimensional surface profile measurement of a cylindrical surface using a multi-beam angle sensor
- Source :
- Precision Engineering. 62:62-70
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- To investigate the application of the multi-beam angle sensor (MBAS) to high-precision optical aspheric and freeform surfaces, which are critical components in optical systems, we present a method of using an MBAS to reconstruct an aspheric surface from angle data. The MBAS is based on a multi-autocollimator system with a microlens array, which can split the beam into several spots and can convert centroid detection of the light intensity into an angle measurement. The MBAS is designed to address the curvature-range problem via a circumferential scan better than other methods and automatically eliminates the tilt error caused by rotation of a workpiece. Using a tracking technique, the MBAS can automatically determine focal spot positions from the centroid measurement of the light intensity. This is directly related to the accuracy of the angular difference measurement. The experimental results confirm the feasibility of using an MBAS for 3D surface profile measurements of cylindrical surfaces.
- Subjects :
- Surface (mathematics)
Microlens
0209 industrial biotechnology
Materials science
business.industry
General Engineering
Centroid
02 engineering and technology
Tracking (particle physics)
Rotation
01 natural sciences
010309 optics
Light intensity
020901 industrial engineering & automation
Optics
Tilt (optics)
0103 physical sciences
business
Beam (structure)
Subjects
Details
- ISSN :
- 01416359
- Volume :
- 62
- Database :
- OpenAIRE
- Journal :
- Precision Engineering
- Accession number :
- edsair.doi...........14bc85cece7359963a51e89935fcd6f4