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Title: Long lifetime, low intensity light source for use in nighttime viewing of equipment maps and other writings

Abstract

A long-lifetime light source with sufficiently low intensity to be used for reading a map or other writing at nighttime, while not obscuring the user's normal night vision. This light source includes a diode electrically connected in series with a small power source and a lens properly positioned to focus at least a portion of the light produced by the diode.

Inventors:
 [1];  [2]
  1. (Livermore, CA)
  2. (Modesto, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
864734
Patent Number(s):
4409643
Assignee:
Frank, Alan M. (Livermore, CA);Edwards, William R. (Modesto, CA) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
lifetime; intensity; light; source; nighttime; viewing; equipment; maps; writings; long-lifetime; sufficiently; reading; map; writing; obscuring; user; normal; night; vision; diode; electrically; connected; series; power; lens; properly; positioned; focus; portion; produced; light produced; power source; light source; electrically connected; intensity light; /362/

Citation Formats

Frank, Alan M., and Edwards, William R. Long lifetime, low intensity light source for use in nighttime viewing of equipment maps and other writings. United States: N. p., 1983. Web.
Frank, Alan M., & Edwards, William R. Long lifetime, low intensity light source for use in nighttime viewing of equipment maps and other writings. United States.
Frank, Alan M., and Edwards, William R. Sat . "Long lifetime, low intensity light source for use in nighttime viewing of equipment maps and other writings". United States. https://www.osti.gov/servlets/purl/864734.
@article{osti_864734,
title = {Long lifetime, low intensity light source for use in nighttime viewing of equipment maps and other writings},
author = {Frank, Alan M. and Edwards, William R.},
abstractNote = {A long-lifetime light source with sufficiently low intensity to be used for reading a map or other writing at nighttime, while not obscuring the user's normal night vision. This light source includes a diode electrically connected in series with a small power source and a lens properly positioned to focus at least a portion of the light produced by the diode.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {1}
}

Patent:

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