Patent ID: 6527440
Filing Date: 2003-03-04
Classification: G01K

Abstract:
An apparatus for detecting a temperature variation in a component of an electrical generator system, the apparatus comprising:a light source; a light window positioned adjacent the electrical generator system and comprising a variably opaque material responsive to the temperature variation; a light sensor; a pair of light guides corresponding to the light window, the pair of light guides comprising a first light guide having a first end positioned adjacent the light source and a second end positioned adjacent the light window so as to convey light emitted from the light source to the light window, and a second light guide having a first end positioned adjacent the light window and a second end positioned adjacent the light sensor so as to capture light emitted from the light source and to convey the captured light to the light sensor; and a heat conductor having a first portion connected to the light window and a second portion connected to the component of the electrical generator system, wherein the heat conductor has a thermal conductivity coefficient greater than 0.1.