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Camera add-on records time of exposureTime photograph is taken and is permanently recorded on edge of exposure by compact electronics module that attaches to camera case. Single-chip timing circuit drives LED display, which is imaged on film plane. Normally blanked display is unblanked when shutter switch is activated.
Document ID
19800000183
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Compton, E. C.
Kassel, P. C., Jr.
Knight, C. W.
Date Acquired
August 10, 2013
Publication Date
September 1, 1980
Publication Information
Publication: NASA Tech Briefs
Volume: 5
Issue: 2
ISSN: 0145-319X
Subject Category
Physical Sciences
Report/Patent Number
LAR-12635
Accession Number
80B10183
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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