Long lifetime, low intensity light source for use in nighttime v

Details Long lifetime, low intensity light source for use in nighttime v Long lifetime, low intensity light source for use in nighttime v

1982-03-23

1983-10-11

Lechert, Jr., Stephen J.

Illumination

Self powered lamp

362186, 362208, 362800, F21L 700

Patent

active

044096437

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.

REFERENCES:
patent: 4290095 (1981-09-01), Schmidt
patent: 4310873 (1982-01-01), Bean

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