Arrangement for color coding of surfaces

Details Arrangement for color coding of surfaces Arrangement for color coding of surfaces

1978-04-17

1981-02-10

Evans, F. L.

Optics: measuring and testing

By shade or color

250226, 3401463B, 356418, 364526, G01N 2125

Patent

active

042498279

ABSTRACT:
An arrangement in which different surfaces of an object have applied to them transparent layers of different colors. Each layer will transmit one or more colors, while inhibiting the transmission of one or more other colors. By applying different color layers or paints, so that the combination of layers have different transmission characteristics, different surfaces of an object may be uniquely identified. To identify a predetermined surface, the colors applied thereon are noted, and the surface is illuminated. A filtering arrangement used in conjunction with either the illuminating source or a photograph camera, causes unique exposure of the film, for a predetermined combination of color filter and color paints applied in sequence on the surface being examined.

REFERENCES:
patent: 3513320 (1970-05-01), Weldon
patent: 3663801 (1972-05-01), Wahli et al.
patent: 3990043 (1976-11-01), Clark
patent: 4143971 (1979-03-01), Levy et al.
Pavanati, IBM Technical Disclosure Bulletin, vol. 19, No. 6, Nov. 1976, pp. 2123 and 2124.

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