Plywood surface defect detecting head

Details Plywood surface defect detecting head Plywood surface defect detecting head

1985-10-29

1988-04-19

LaRoche, Eugene R.

Optics: measuring and testing

Inspection of flaws or impurities

Having predetermined light transmission regions

250572, G01N 2189

Patent

active

047385332

ABSTRACT:
There is disclosed a plywood surface defect detecting head. It comprises a shielding plate slidingly contacted at its front end with one surface of the plywood, a light source provided at one side of the shielding plate, and an optical fiber provided at the other side of the shielding plate, the optical fiber being disposed such that one end thereof slidingly contacts the plywood surface together with the shielding plate and the other end thereof faces toward a light detector.

REFERENCES:
patent: 3120861 (1964-02-01), Finlay et al.
patent: 3890509 (1975-06-01), Maxey
patent: 4029391 (1977-06-01), French
patent: 4338032 (1982-07-01), Bardsley et al.
IBM Technical Disclosure Bulletin, vol. 22, No. 10, Mar. 1980, "Detection of Underfilled Holes in a Ceramic Sheet".
Applied Optics, vol. 21, No. 19, Oct. 1, 1982, "Fiber-Optic Scattering Monitor for Use with Bulk Opaque Material".

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