| dc.contributor.author |
Shang, H. M. |
| dc.contributor.author |
Toh, S. L. |
| dc.contributor.author |
Fu, Yu. |
| dc.contributor.author |
Quan, Chenggen. |
| dc.contributor.author |
Tay, Cho Jui. |
| dc.date.accessioned |
2010-11-26T08:04:49Z |
| dc.date.available |
2010-11-26T08:04:49Z |
| dc.date.copyright |
2001 |
| dc.date.issued |
2010-11-26T08:04:49Z |
| dc.identifier.citation |
Shang, H. M., Toh, S. L., Fu, Y., Quan, C., Tay, C. J. (2001). Measurement of angle of rotation using circular optical grating. Proceedings of the Second International Conference on Experimental Mechanics, 4317, pp.72-75. |
| dc.identifier.uri |
http://hdl.handle.net/10220/6477 |
| dc.description.abstract |
In this paper, a simple method is described for the measurement of small angles of rotation of a flat surface using a circular
optical grating, which may be generated and projected onto the test surface using either a standard Michelson interferometer
or a computer-controlled LCD projector. In view of its availability in most laboratories, a Michelson interferometer is used
in this paper. The diameter of the grating that is generated can be easily magnified or be reduced to suit the size of the test
surface. With circular grating, the angular rotation of both diffuse and specularly reflective surfaces about any axis of
rotation can be measured from the distortion of the grating. The distorted grating that is diffracted from a specularly
reflective surface may be recorded in two different ways using a CCD camera. In the first method, the distorted grating is
recorded off the mirror surface as though it were a diffuse surface. In the second method, the distorted grating is specularly
reflected onto an opaque screen and the CCD camera subsequently records the grating image off this screen. |
| dc.language.iso |
en |
| dc.rights |
Copyright 2001 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. |
| dc.subject |
DRNTU::Science::Physics::Optics and light. |
| dc.title |
Measurement of angle of rotation using circular optical grating. |
| dc.type |
Conference Paper |
| dc.contributor.conference |
Second International Conference on Experimental Mechanics (Singapore) |
| dc.contributor.research |
Temasek Laboratories |
| dc.identifier.doi |
http://dx.doi.org/10.1117/12.429549 |
| dc.description.version |
Published version |
