Patent ID: 7119971

Claim:
A display element support having a structure fitting an optical prism, which reflects light incident on its light incidence surface from a light source at least twice within itself for emitting the reflected light as emitted light to the outside and has projections formed by utilizing slide mechanisms used in an injection molding process of manufacturing the optical prism, on the opposite side surfaces thereof crossing the light incidence surface and light emission surface wherein: the display element support has a mounting portion having a shape complimentary to the shapes of the projections of the optical prism and a stepped portion thereof formed in at least one of each of the optical surfaces including the light incidence surface, light emission surface and reflecting surfaces; further including a portion having a facing surface facing the light incidence surface of the optical prism, the facing surface being at a right angle or a predetermined angle to a reference axis of the light incidence surface so as to evade reflection of at least some light, which has been incident on the light incidence surface from the light source and reflected from the light incidence surface toward the light incidence surface of the optical prism again.