Inspection lighting system

Details Inspection lighting system Inspection lighting system

1982-09-30

1985-08-06

McGraw, Vincent P.

Optics: measuring and testing

Inspection of flaws or impurities

Textile inspection

356430, 356446, 26 70, G01N 2147, G01N 2188

Patent

active

045332452

ABSTRACT:
A method and apparatus for inspecting substrates such as flat textile fabrics which have been sculptured to a depth of less than about 0.003 inches. Opposing line sources of illumination are used to illuminate the substrate at a relatively low angle while the substrate is held flat in front of a dark, non-reflective background and is substantially shielded from ambient light.

REFERENCES:
patent: 2059308 (1934-02-01), Boadwee et al.
patent: 3524988 (1967-11-01), Gaither, IV
patent: 3574469 (1971-04-01), Emerson
patent: 3877814 (1975-04-01), Hess et al.
patent: 3992111 (1976-11-01), Roulier et al.
patent: 4065213 (1977-12-01), Nyman

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