Light source device and projector

A light source device, comprising:

• a light emitting tube having a light emitting portion that generates light by an electric discharge between a pair of electrodes and first and second sealed portions provided on either side of the light emitting portion;
• a main reflecting mirror provided along a first sealed portion of the light emitting tube and having a main reflecting portion that reflects light radiated from the light emitting tube so as to converge at a predetermined position;
• and
• a sub-reflecting mirror provided along a second sealed portion of the light emitting tube and having a sub-reflecting portion and a base portion, the sub-reflecting portion sending light radiated from the light emitting tube toward a side opposite to the main reflecting mirror back to the light emitting portion of the light emitting tube, and the base portion being provided at a side of the second sealed portion of the sub-reflecting portion and formed with a curved surface having curvature different from the sub-reflecting portion.

A light source device, comprising:

• a light emitting tube having a light emitting portion that generates light by an electric discharge between a pair of electrodes and first and second sealed portions provided on either side of the light emitting portion;
• a main reflecting mirror provided along a first sealed portion of the light emitting tube and having a main reflecting portion that reflects light radiated from the light emitting tube so as to converge at a predetermined position;
• and
• a sub-reflecting mirror provided along a second sealed portion of the light emitting tube and having a sub-reflecting portion and a base portion, the sub-reflecting portion sending light radiated from the light emitting tube toward a side opposite to the main reflecting mirror back to the light emitting portion of the light emitting tube, and the base portion being provided at a side of the second sealed portion of the sub-reflecting portion and formed with a curved surface having a center different from the sub-reflecting portion.

A light source device, comprising:

• a light emitting tube having a light emitting portion that generates light by an electric discharge between a pair of electrodes and first and second sealed portions provided on either side of the light emitting portion;
• a main reflecting mirror provided along a first sealed portion of the light emitting tube and having a main reflecting portion that reflects light radiated from the light emitting tube so as to converge at a predetermined position;
• and
• a sub-reflecting mirror provided along a second sealed portion of the light emitting tube and having a sub-reflecting portion and a base portion, the sub-reflecting portion sending light radiated from the light emitting tube toward a side opposite to the main reflecting mirror back to the light emitting portion of the light emitting tube, and the base portion being provided at a side of the second sealed portion of the sub-reflecting portion and transmitting light.

A light source device, comprising:

• a light emitting tube having a light emitting portion that generates light by an electric discharge between a pair of electrodes and first and second sealed portions provided on both sides of the light emitting portion;
• a main reflecting mirror provided along a first sealed portion of the light emitting tube and having a main reflecting portion that reflects light radiated from the light emitting tube so as to converge at a predetermined position;
• and
• a sub-reflecting mirror provided along a second sealed portion of the light emitting tube and having a sub-reflecting portion and a base portion, the sub-reflecting portion sending light radiated from the light emitting tube toward a side opposite to the main reflecting mirror back to the light emitting portion of the light emitting tube, and the base portion being provided at a side of the second sealed portion of the sub-reflecting portion and diffusing light.

A light source device, comprising:

• a light emitting tube having a light emitting portion that generates light by an electric discharge between a pair of electrodes and first and second sealed portions provided on either side of the light emitting portion;
• a main reflecting mirror provided along a first sealed portion of the light emitting tube and having a main reflecting portion that reflects light radiated from the light emitting tube so as to converge at a predetermined position;
• and
• a sub-reflecting mirror provided along a second sealed portion of the light emitting tube and having a sub-reflecting portion and a base portion, the sub-reflecting portion sending light radiated from the light emitting tube toward a side opposite to the main reflecting mirror back to the light emitting portion of the light emitting tube, and the base portion being provided at a side of the second sealed portion of the sub-reflecting portion and preventing light radiated from the light emitting tube from being sent back to the light emitting portion and the vicinity thereof.