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

Patent · 31 December 1982

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
• 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

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connected
diode
electrically
electrically connected
equipment
focus
intensity
intensity light
lens
lifetime
light
light produced
light source
long-lifetime
map
maps
night
nighttime
normal
obscuring
portion
positioned
power
power source
produced
properly
reading
series
source
sufficiently
user
viewing
vision
writing
writings