Patent ID: 6846116

Claim:
A sensor head that applies a light beam from a light producing element to an object and detects a light beam reflected by the object using a light detecting element to acquire information on physical quantities of the object, said sensor head comprising: a first substrate on which are located a light producing element emitting light and a light detecting element producing an electrical signal in response to incident light; a one-piece optical structure body on a second substrate, the optical structure body having a plurality of optical elements for converging incident light along a direction parallel to a surface of the second substrate, and for converging an outgoing beam from the light producing element and a light beam reflected by an object, along the direction parallel to the surface of the second substrate; and lenses for converging incident light along a direction perpendicular to the surface of the second substrate, and for converging the outgoing beam from the light producing element and the light beam reflected by the object, along the direction perpendicular to the surface of the second substrate, respectively.