Publication:
Developing and testing of a prototype electro-optical phase encoded position transducer

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Authors
Parriott, Gary R.
Subjects
Advisors
Davis, David Scott
Date of Issue
1991-12
Date
1991-Dec
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
A proof-of-concept experimental validation of a proposed idea for a prototype electro-optical phase encoded position transducer was conducted. The intensity of two IR LED beams were modulated sinusoidally at frequency omega, with a 90 degree temporal phase difference. They further modulated by a pair of sinusoidal optical encoding masks with 90 degree spatial phase difference. The mask pair was mounted on a mechanical tage and translated perpendicular to the beam axis. The sum of the two signals produced by this electro-optical configuration constituted another sinusoid at temporal frequency omega, whose phase was proportional to mask position. Although small deviations from ideal behavior were observed, the validity of the technique has been established incontestably.
Type
Thesis
Description
Series/Report No
Department
Physics
Other Units
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NPS Report Number
Sponsors
Funder
Format
54 p. : ill. ; 28 cm.
Citation
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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