A projector includes a first lens plate having a plurality of lenses, a second lens plate having a plurality of lenses, a light valve that modulates an output light beam from the second lens plate, and a light source apparatus. The light-source apparatus has a light-source lamp including an emission tube, a reflective mirror that reflects a divergent light beam from the light-source lamp to output a parallel light beam, the reflecting mirror having a reflective surface, a lamp housing that supports the reflective mirror, and an electrode lead. The electrode lead is led out of an end of the emission tube that is projected forward out of the reflective surface and is connected to an external connection terminal board which is positioned to a rear side of the reflective surface. The electrode lead is routed via the portion of the reflective mirror other than an effective area of the reflective mirror. A portion of the electrode lead positioned on the side of the reflective surface is arranged along a grove of a lens of the plurality of lenses of one of the first and second lens plate.
This is a Continuation of application Ser. No. 09/772,934 filed Jan. 31, 2001, now U.S. Pat. No. 6,690,282, which in turn is a Continuation of application Ser. No. 08/981,006 filed Dec. 10, 1997, now U.S. Pat. No. 6,269,799, which is a 371 of PCT/JP97/01067 on 27 Mar. 1997. The entire disclosure of the prior applications is hereby incorporated by reference herein in its entirety.
A multi-display device for connecting projection screens of a plurality of image display devices so as to form one-screen image. Each of the image display devices includes a luminance lowering characteristic storage unit for storing a look-up table indicating average luminance lowering characteristic of a projection lamp, a timer unit for counting the lit time of lamp of the device, a lit time storage unit for accumulating and storing the lit time from the lamp use start moment, and an external communication unit for communicating.
