Hand held flashlight with selective beam and enhanced apparent b

Details Hand held flashlight with selective beam and enhanced apparent b Hand held flashlight with selective beam and enhanced apparent b

1991-06-28

1994-11-22

Husar, Stephen F.

Illumination

Self powered lamp

Having plural lamp bulbs or lamp sockets

362235, F21L 700

Patent

active

053674464

ABSTRACT:
This invention produces a spot beam or a broad beam having no unilluminated regions within the beam. In one case, the size of the beam is established by the relative position of the light bulb and a uniquely shaped reflector. The apparent brightness of the beam is established by oscillating the beam in a controlled fashion. In another case, both the size of the beam and the apparent brightness are established by oscillating the beam in a controlled fashion. The result of this invention is a spot beam that can be made into a broad beam without the dark regions that result from the existing adjustment techniques and also a broad beam having an apparent brightness greater than that attainable by other techniques.

REFERENCES:
patent: 4249234 (1981-02-01), Park et al.
patent: 4274130 (1981-06-01), Elliott
patent: 4713736 (1987-12-01), Kasboske

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