Abstract: An apparatus (10) for melt-adhering resin pipes, comprising support means (11, 12) for supporting a resin pipe (1) engaged with a resin joint (2), and laser irradiation means (30) for irradiating a laser beam onto a portion of the resin pipe engaged with the resin joint. Further, an axial direction driving means and a circumferential direction driving means may be provided so that the laser irradiation means (30) moves in the circumferential direction and in the axial direction of the resin pipe.

Abstract: A light source unit includes an emission surface and a plurality of point light sources arranged on the emission surface. An optical system focuses a plurality of light beams emitted from the point light sources into a single light beam and irradiates a target object to be irradiated with the single light beam. The single light beam is obtained with a desired light intensity profile according to a combination of positions where the point light sources are arranged and intensity distributions of the light beams emitted from the point light sources.

Abstract: When installing software in a user's computer using a medium distributed from a supplier, an install limited count, which limits the number of times installation can occur, is recorded in a user-inaccessible area of a removable recording medium. In addition, an install count, which indicates the number of times the software installation has been executed and which is updated when the software installation is executed, is also recorded in the user-inaccessible area of the removable recording medium. Every time the software is installed, the install count is compared with the install limited count to prevent the software installation from being executed more than the number of times set by the install limited count.