Patent ID: 8534874

Claim:
A heat dissipation member disposed opposing a reflective light modulation element, the heat dissipation member comprising: a heat receiving surface, disposed opposing a rear surface of the reflective light modulation element, that receives heat from the reflective light modulation element; a heat dissipation surface located on the opposite side of the heat receiving surface; and multiple heat dissipation fins that protrude from the heat dissipation surface, each fin of the multiple heat dissipation fins protruding in an approximately plate shape; wherein the multiple heat dissipation fins are formed so that the density at which the multiple heat dissipation fins are disposed, when viewed along a cross-section of heat dissipation fins among the multiple heat dissipation fins that is orthogonal to the direction in which the heat dissipation fins protrude, is greater at a center area of the heat dissipation surface than at an end area of the heat dissipation surface, the heat dissipation fins are disposed at equal intervals, and width dimensions of the heat dissipation fins decrease from the center area of the heat dissipation surface to the end area of the heat dissipation surface.