INSPECTION METHOD OF LAMINATED PLATE

PROBLEM TO BE SOLVED: To provide an inspection method of a laminated plate capable of detecting the foam present in the laminated plate such as a polarizing plate or the like by image inspection. SOLUTION: The inspection method of the laminated plate includes a heating process for heating the lamina...

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Bibliographische Detailangaben
1. Verfasser:	MAEDA IKUHISA
Format:	Patent
Sprache:	eng
Schlagworte:	DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING FREQUENCY-CHANGING INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MEASURING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PERFORMING OPERATIONS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an inspection method of a laminated plate capable of detecting the foam present in the laminated plate such as a polarizing plate or the like by image inspection. SOLUTION: The inspection method of the laminated plate includes a heating process for heating the laminated plate from one side thereof, a photographing process for photographing the other side of the heated laminated plate by an infrared camera and a detection process for detecting the foam present in the laminated plate on the basis of the image photographed by the infrared camera. In the heating process, the laminated plate 16 is placed on a hot plate 18 and can be heated from one side thereof by the hot plate. In the photographing process, the infrared camera 20 is arranged above the laminated plate to photograph the upper surface of the laminated plate. COPYRIGHT: (C)2008,JPO&INPIT