Patent ID: 8550633

Claim:
A projection image display apparatus that enlarges and displays an image, said projection image display apparatus comprising: a case; a laser light source; a cooling mechanism that includes a component that produces vibration during an operation; a diffuser that diffuses light emitted from said laser light source; optics that shape the light that is diffused by said diffuser to light having a uniform luminance distribution and a rectangular cross-section; and an optical modulation element that modulates the light shaped by said optics, wherein said component included in said cooling mechanism and said diffuser are connected by a vibration transmitting member, wherein said component causes a sympathetic vibration between said vibration transmitting member and said diffuser, and wherein an end portion of said vibration transmitting member is secured to a part that is disposed on the case and said diffuser is disposed above another end portion of said vibration transmitting member, wherein said cooling mechanism is disposed on said vibration transmitting member between said part and said diffuser.