Light source and projector

Abstract

A light source includes: light-emitting portion having a discharge space in the interior thereof; an arc tube having first and second sealing portions provided on both sides of the light-emitting portion along an optical axis; a reflector arranged so that a center where the optical axis passes is located on the side of the first sealing portion with respect to the light-emitting portion and configured to reflect a luminous flux emitted from the light-emitting portion; and an air flow control unit arranged on the side of the reflector in the direction of the optical axis with respect to inflection points at a connecting portion between the light-emitting portion and the first sealing portion, extending respectively along a plane including the optical axis, and including at least two panel-shaped members extending not in parallel to each other and forming a predetermined angle.

Dependencies are inferred from the claim text.