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Apparatus Would Position Bright Spot On Projection ScreenProposed apparatus aims beam of visible light at wavelength lambda(2) to create bright spot at desired position in image on projection screen. Intended to replace handheld laser and flashlight pointers lecturers sometimes use to indicate features in projected images. Beam of light cannot be inadvertently aimed toward audience.
Document ID
19960022397
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Rayman, Marc D.
(Caltech)
Date Acquired
August 17, 2013
Publication Date
May 1, 1996
Publication Information
Publication: NASA Tech Briefs
Volume: 20
Issue: 5
ISSN: 0145-319X
Subject Category
Electronic Systems
Report/Patent Number
NPO-19429
Accession Number
96B10212
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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