Patent ID: 8711097

Claim:
An optical navigation device that is operable to move a cursor based on movement of an object, the device comprising: an outer housing; a light source having a top surface from which light is emitted; a curved reflector located adjacent to the light source and positioned above the top surface of the light source to gather and reflect light from the light source in a first direction; an object surface located in the first direction from the reflector, the object surface being transparent to the light from the light source and through which the light reflected by the reflector is directed and which can be reflected back through the object surface by an object located above the object surface; a lens located below the object surface to gather and direct light passing back through the object surface after being reflected off of the object, the light being directed in a second direction that is not parallel to the first direction; a multi-pixel image sensor located in the second direction from the lens to receive light reflected off of the object and directed by the lens; and an inner housing surrounding the image sensor and located within the outer housing, the inner housing allowing light to pass from outside the inner housing to the image sensor only through the lens; and wherein the light source and the reflector are located outside a portion of the inner housing that surrounds the image sensor.