| http://www.w3.org/ns/prov#value | - G2152.In FIG. 3(a) and FIG. 3(b), each of the plurality of light-bar generating units and the plurality of light-spot generating units is a respective external light-source device, and the plurality of light-bar generating units and the plurality of light-spot generating units are installed in the periphery of the operation area 222 in upper-lower symmetry or left-right symmetry about the operatio
|
