Patent ID: 7514693
Filing Date: 2009-04-07
Classification: G01J

Abstract:
1. A multidirectional ultraviolet sensor for sensing an ultraviolet light, comprising: a substrate having a top surface; a UV-sensitive layer formed on the top surface of the substrate and consisting of particles of irregular shapes of a UV-sensitive material and a binder applied on the top surface of the substrate, said irregularly shaped particles and said binder being attached to said substrate through a process of sintering within a temperature range between 500° C. and 600° C., the UV-sensitive layer having an impedance changeable in response to an intensity of the sensed ultraviolet light; a first electrode layer formed at a first position in contact with the UV-sensitive layer; and a second electrode layer formed at a second position in contact with the UV-sensitive layer, spaced from the first electrode layer.