mirage

Measurement of angle of rotation using circular optical grating

DSpace/Manakin Repository

 

Search DR-NTU


Advanced Search Subject Search

Browse

My Account

Measurement of angle of rotation using circular optical grating

Show full item record

Title: Measurement of angle of rotation using circular optical grating
Author: Shang, H. M.; Toh, S. L.; Fu, Yu; Quan, Chenggen; Tay, Cho Jui
Copyright year: 2001
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.
Subject: DRNTU::Science::Physics::Optics and light
Type: Conference Paper
Conference name: Second International Conference on Experimental Mechanics (Singapore)
Research Centre: Temasek Laboratories
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.
Version: Published version

Files in this item

Files Size Format View
Measurement of ... rcular optical grating.pdf 331.3Kb PDF View/Open
   

DOI Query

- Get published version (via Digital Object Identifier)
   

This item appears in the following Collection(s)

Show full item record

Statistics

Total views

All Items Views
Measurement of angle of rotation using circular optical grating 931

Total downloads

All Bitstreams Views
Measurement of angle of rotation using circular optical grating.pdf 414

Top country downloads

Country Code Views
Singapore 184
United States of America 100
China 68
Russian Federation 6
France 5

Top city downloads

city Views
Singapore 184
Mountain View 74
Beijing 39
Tokyo 4
Redwood City 3

Downloads / month

  2014-09 2014-10 2014-11 total
Measurement of angle of rotation using circular optical grating.pdf 0 0 17 17