Apparatus and method for a shoulder implant, for example, for the glenohumeral joint. A light emitting diode and a reflector are housed in a space formed by the base member and the lens. The film can float by receiving buoyancy in the oil. The following condition is met by the system, where L1 is an interval between the object plane and the surface apex that is the closest to the object plane, and L2 is an interval between the surface apex of the first reflective surface and the surface apex that is the closest to the object plane:0. The method yet also includes pumping out the plasma chamber to increase a pressure differential between a first pressure that exists under the backside of the substrate and a second pressure that exists in a region above the substrate, wherein the pressure differential enables the substrate to be lifted from the ESC. When a vehicle reaches near an intersection, an on-vehicle system refers to communication availability information previously stored by using a car navigation system, and recognizes whether on-vehicle communication equipment is capable of communicating with roadside communication equipment.