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

Patent · Sat Jan 01 00:00:00 EST 1983

OSTI ID:864734

Frank, Alan M ^[1]; Edwards, William R ^[2]

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1. Livermore, CA
2. Modesto, CA

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.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Frank, Alan M. (Livermore, CA);Edwards, William R. (Modesto, CA)
• Patent Number(s): US 4409643
• OSTI ID: 864734
• Country of Publication: United States
• Language: English

Related Subjects

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
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