Optical characteristic measuring systems and methods such as for determining the color or other optical characteristics of teeth are disclosed. Perimeter receiver fiber optics preferably are spaced apart from a source fiber optic and receive light from the surface of the object/tooth being measured....http://www.google.es/patents/US20020097400?utm_source=gb-gplus-sharePatente US20020097400 - Apparatus and method for measuring optical characteristics of an object
Apparatus and method for measuring optical characteristics of an object
Número de solicitud: 10/039,205 Número de publicación: US 2002/0097400 A1 Fecha de presentación: 4 Ene 2002 Patente emitida: US6915955 ( Fecha de emisión 12 Jul 2005)