OPTICAL DISTANCE SENSOR

An optical distance sensor includes a first substrate provided with a light emitting element and a light receiving element, an optical structure body molded in one piece on a second substrate, the optical structure body having a plurality of optical elements intended for converging incident light in a parallel direction to a surface of the second substrate, for converging an outgoing light beam from the light emitting element and a light beam reflected by an object to be measured in the parallel direction to the surface of the second substrate, and lenses intended for converging incident light in a perpendicular direction to the surface of the second substrate, for converging the outgoing light beam from the light emitting element and the light beam reflected by the object to be measured in the perpendicular direction to the surface of the second substrate, respectively. Consequently, there can be provided a small-size and low-cost optical distance sensor without having to use any three-layer waveguide with a large manufacturing cost and any hard-to-handle optical fiber.