Optics: measuring and testing – Inspection of flaws or impurities – Transparent or translucent material
Patent
1979-12-14
1981-12-22
Corbin, John K.
Optics: measuring and testing
Inspection of flaws or impurities
Transparent or translucent material
250562, 250572, G01N 2186
Patent
active
043068081
ABSTRACT:
For inspecting a float glass ribbon for flaws an optical flaw detection system utilizing a laser beam which linescans the surface is provided. The laser beam is made incident to the glass ribbon at a high angle of incidence with respect to the normal. Deviation of the light transmitted through the glass ribbon is used as an indication of a defect. The invention is particularly useful for detecting "tin drip" type defects.
REFERENCES:
patent: 3493769 (1970-02-01), Revesz et al.
patent: 3743431 (1973-07-01), Cushing et al.
patent: 3792930 (1974-02-01), Obenreder
patent: 3866038 (1975-02-01), Korth
patent: 3925049 (1975-12-01), Schwenninger
Corbin John K.
Ford Aerospace & Communications Corp.
Godwin Jr. Paul K.
Koren Matthew W.
Sadler Clifford L.
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