PURPOSE: To equalize the intensity distribution of a projection beam, by constituting the device by which plural flexible photoconductive fibers are bundled, one end and the other end are made a light incidence terminal and a light projection terminal, respectively, a light beam from each light source is led into each fiber of the incidence terminal, and its composite light beam is projected from the projection terminal.

CONSTITUTION: A light beam from the laser tube 30 passes through the optical element 31 such as a filter or a shutter, etc., is reflected by the mirror 32, and goes into the light beam division means 33. The light beam division means 33 contains plural half mirrors between the total reflection mirror 33a of the uppermost surface and the half mirror 33b of the incidence terminal, the light beam which has been equally divided is made incident into the hard waveguide 70 of the connector 50 by correspondence of 1 to 1. The divided light beam is led into each fiber of the photoconductive fiber bundle through the connection terminal 60 equipped with the hole 61 into which the waveguide 70 is fitted, and it is projected from the other end of the fiber bundle. Accordingly, the intensity distribution of a projection light beam can be equalized.