Electrically focused surgical light

Details Electrically focused surgical light Electrically focused surgical light

1978-08-24

1981-09-08

Padgett, Benjamin R.

Illumination

Work-table lighting system

362 3, 362 11, 362 13, 362 18, 362227, 362233, 362295, 362297, 362804, A61G 1300

Patent

active

042888441

ABSTRACT:
A multi-filament lamp combination is disclosed which may be used alone and in multi-lamp arrangements with other single and multi-filament lamps to provide pattern size variation from a large diameter flood effect to a smaller diameter spot effect. A spot/flood capability exists to provide large pattern exposure simultaneously with secondary spotlighting. The filaments can be energized selectively from a remote switching station so that the individuals who are scrubbed and gloved need not touch any part of the switching arrangement to change the lamp pattern size. A cluster of lights can contain one or more multi-filament lamps within the cluster, so that by switching on the rear most filament of the multi-filament lamps and switching off the single filament lamps, a small high intensity pattern is obtained by switching to the other filaments, a large pattern of high intensity is formed. More than two filaments can be provided in each lamp.

REFERENCES:
patent: 2263162 (1941-11-01), Collins
patent: 3221214 (1965-11-01), Wolff et al.
patent: 3763394 (1973-10-01), Blanchard
patent: 3891842 (1975-06-01), Strusinski
patent: 3927313 (1975-12-01), Herold
patent: 4025778 (1977-05-01), Hayakawa
patent: 4037096 (1977-07-01), Brendgord et al.

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