Lighting unit for liquids

Details Lighting unit for liquids Lighting unit for liquids

1986-01-15

1987-02-17

Schwartz, Larry I.

Illumination

With static structure

Wall or ceiling

362293, 362294, 362308, F21S 102

Patent

active

046444505

ABSTRACT:
A lighting unit for liquids comprises a tubular member with a flange at one end and a screwthread at the other whereby it can be secured in the wall of a vessel to hold liquid. A holder engaged in the rear end of the tubular member holds a bulb such as an automobile head lamp bulb, and a lens is mounted in a recess in the front end of the tubular member. The lens has a convex front face, a concave rear face and a negative focal length and, with the light mounted close to the rear of the lens, gives a very wide angle of illumination. The angle may for example be 172.degree. and the tubular member may be of only 7 cm diameter.

REFERENCES:
patent: 2330935 (1943-10-01), Tuck
patent: 2824217 (1958-02-01), Karole
patent: 4433366 (1984-02-01), Wade
patent: 4574337 (1986-03-01), Poppenheimer

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