Method of manufacturing a lighting unit for inspecting a surface

Details Method of manufacturing a lighting unit for inspecting a surface Method of manufacturing a lighting unit for inspecting a surface

1997-06-18

2000-06-06

O'Shea, Sandra

Illumination

Work-table lighting system

362 33, A61G 1300

Patent

active

060709863

ABSTRACT:
An object of the invention is to make it easy to manufacture the lighting unit 4 in which a plurality of illuminants 1 are arranged on the concave face of a board 2 formed into a shape of a hollow truncated cone. A method of manufacturing a lighting unit comprises the steps of holding a flexible circular printed circuit board 2 having a concentric circular hole and a cutout which has at least two sides 2a, 2b in a planar state, embedding a plurality of illuminants 1 in the board, and jointing one side 2a of the cutout and the other side 2b of the cutout or holding both sides 2a, 2b in close contact so as to place the illuminants 1 in the side of the concave face of the board 2.

REFERENCES:
patent: 3073210 (1963-01-01), Packard
patent: 4893223 (1990-01-01), Arnold
patent: 5309277 (1994-05-01), Deck
patent: 5321593 (1994-06-01), Moates
patent: 5420773 (1995-05-01), Huang
patent: 5519496 (1996-05-01), Borgert et al.

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