Patent ID: 8083355

Claim:
A projector, comprising: a light source device; an optical device that modulates a light beam irradiated from the light source device in accordance with image information; and a projection optical device that projects the light beam modulated by the optical device, wherein the optical device includes: an optical element optically converting the light beam incident thereon and emitting the converted light beam; and a heat pipe having an outer surface that is connected with the optical element in a heat transferable manner to cool the optical element, the heat pipe including: a tube; a capillary structure provided in the tube; and a coolant housed in the tube, the coolant circulating in the tube to transfer heat in the heat pipe, and the heat pipe has a U-shape in plan view which is formed by a base end extending in a predetermined direction and a pair of extending portions extending from ends of the base end in a direction substantially orthogonal to an extending direction of the base end, the outer surface of the heat pipe being pressed so as to coincide with a profile of an outer surface of the optical element such that the heat pipe surface-contacts with the outer surface of the optical element.