Patent ID: 8491132

Claim:
A projector comprising: a first lamp serving as a light source; a second lamp arranged so as to shine in the same direction as the first lamp to make an irradiation direction parallel; a lighting optical system that has light from the first lamp or the second lamp incident thereon, generates image light, and emits the image light; a projection optical system that has an optical axis substantially perpendicular to the irradiation direction of the first lamp and the second lamp, has the image light from the lighting optical system incident thereon, and emits the image light to an outside; a first mirror that is arranged opposite to the first lamp and the second lamp across the optical axis of the projection optical system and reflects the light from the first lamp or the second lamp to cause the light to enter the lighting optical system; a movable mirror that, when the first lamp is turned on, causes the light from the first lamp to directly enter the first mirror by deviating from an optical path on a straight line connecting the first lamp and the first mirror and, when the second lamp is turned on, reflects the light from the second lamp by being set up on the optical path on the straight line connecting the first lamp and the first mirror to cause the light to enter the first mirror; and a second mirror that reflects the light from the second lamp to cause the light to enter the movable mirror.