Patent ID: 6326948
Filing Date: 2001-12-04
Classification: G01S,G06F

Abstract:
An input device comprising:a base having a slide surface;a movable body slidable on the slide surface;a light-emitting element for emitting light;a reflective portion which is provided for the movable body and has a reflective surface for reflecting the light emitted by the light-emitting element; anda plurality of light-receiving elements for receiving the light reflected by the reflective portion; anda fixing portion provided on the base,wherein the movable body is supported by an elastic structure including an elastic body which expands/shrinks with a sliding of the movable body,wherein the elastic structure is linked to the base via the fixing portion,wherein the light-emitting element and the plurality of light-receiving elements are connected to the base, andwherein a variation of a total amount of light received by the plurality of light-receiving elements from the light reflected by the reflective portion as the movable body, which has at least a portion thereof in contact with the slide surface and which slides on the slide surface, is detected as a direction and an amount of two-dimensional movement of the movable body.