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

Patent · Tue Oct 11 00:00:00 EDT 1983

OSTI ID:7146145

Frank, A M; Edwards, W R

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 is disclosed. 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. 1 fig.

• DOE Contract Number: W-7405-ENG-48
• Assignee: PTO; EDB-94-125608
• Patent Number(s): US 4409643; A
• Application Number: PPN: US 6-360966
• OSTI ID: 7146145
• Resource Relation: Patent File Date: 23 Mar 1982
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
LIGHT SOURCES
DESIGN
MILITARY EQUIPMENT
NIGHT SKY
POWER SUPPLIES
SEMICONDUCTOR DIODES
SERVICE LIFE
USES
ELECTRONIC EQUIPMENT
EQUIPMENT
LIFETIME
RADIATION SOURCES
SEMICONDUCTOR DEVICES
SKY
450000* - Military Technology
Weaponry
& National Defense