Method and apparatus for coating detection and surface evaluation

A primary beam of light is directed against the surface of a piece of material under conditions predetermined to generate a secondary beam by either transmission through the piece or reflection from the surface thereof. The secondary beam is directed against means for measuring the intensity of the...

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Bibliographische Detailangaben
1. Verfasser:	BYERS, DONALD W
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACCESSORIES THEREFOR APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS AUXILIARY PROCESSES IN PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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Beschreibung
Zusammenfassung:	A primary beam of light is directed against the surface of a piece of material under conditions predetermined to generate a secondary beam by either transmission through the piece or reflection from the surface thereof. The secondary beam is directed against means for measuring the intensity of the transmitted or reflected light and the light intensity measured. The procedure is repeated on a different surface of the piece and the results compared. This gives an evaluation of the surface and a determination of the presence, absence, or condition of any coating which may be present on the surface. The apparatus of the invention comprises means for achieving the foregoing functions.The methode and apparatus are of particular application in the determination of which is the coated side of an object, such as a photographic film, or a coated lens.