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Test Bed For Control Of Optical-Path LengthsTruss structure and ancillary equipment constitute test bed for experiments in methods of controlling lengths of optical paths under conditions of structural vibration and deformation. Accommodates both passive and active methods of control. Experimental control system reduces millimeter-level disturbances in optical path length to nanometers. Developed for control, alignment, and aiming of distributed optical systems on large flexible structures. Test bed includes tower 2.5 meters high with two horizontal arms extending at right angles from its top. Rigidly mounted on massive steel block providing measure of isolation from ground vibrations. Optical motion-compensation system similar to one described previously in NASA Tech Briefs enclosed in flexure-mounted frame, called "trolley," at end of longer horizontal arm.
Document ID
19940000117
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
O'Neal, Michael C.
(Caltech)
Eldred, Daniel D.
(Caltech)
Liu, Dankai
(Caltech)
Redding, David C.
(Charles Draper Laboratories)
Date Acquired
August 16, 2013
Publication Date
February 1, 1994
Publication Information
Publication: Laser Tech. Brief.
Volume: 2
Issue: 1
Subject Category
Mechanics
Report/Patent Number
NPO-18487
Accession Number
94B10117
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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