MIRROR DEVICE FOR BACK LIGHTING TYPE PROJECTOR

PURPOSE:To produce a large-sized mirror, to disassemble, to reassemble, to carry in/out a reflective mirror through a standard door and to replace the reflective mirror after setting by vertically and horizontally arranging plural reflective mirrors in a plane state and uniting them. CONSTITUTION:The back lighting type projector 1 is mainly constituted of a housing 2, a projecting part 3, a mirror device 4 and a screen 5. Light 6 projected from the projecting part 3 is reflected on the reflective surface of the mirror device 4, and then, it is projected to the screen 5 from the back. The reflective surface of the mirror device 4 is formed by a reflective mirror aggregate 7 constituted of four reflective mirrors 8 having the same rectangular shapes which are vertically and horizontally arranged in a plane state, and reinforcing plates 9 are joined and fixed on the back surface of each reflective mirror 8. As to each reflective mirror 8 provided with the reinforcing plate 9, the end surfaces of adjacent reflective mirrors are made to butt with each other so that each reflective surface may be positioned at the same plane, and four outer peripheral sides of the aggregate constituted of four reflective mirrors 8 provided with reinforcing plates 9 are held by a mirror frame 10.