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Shutter For VPPA-Welding Vision SystemConceptual electro-optical shutter subsystem regulates intensity of light entering video camera from variable-plasma-pulse-arc weld in process. Camera part of video system that enables welding technician to obtain better view of weld bead and puddle in light of arc. Electro-optical shutter opened during low-illumination viewing intervals near zero crossings of welding current, preventing overloading of video camera.
Document ID
19890000575
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Lirette, Murray J. (Martin Marietta Corp.)
Date Acquired
August 14, 2013
Publication Date
November 1, 1989
Publication Information
Publication: NASA Tech Briefs
Volume: 13
Issue: 11
ISSN: 0145-319X
Subject Category
Fabrication Technology
Report/Patent Number
MFS-28267
ISSN: 0145-319X
Report Number: MFS-28267
Accession Number
89B10575
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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