Projection apparatus

A projection apparatus comprising:

• a light source apparatus that outputs light via an exit port;
• a first reflective optical element that reflects at least part of the light outputted by the light source apparatus;
• a second reflective optical element disposed in an optical path of the light reflected off the first reflective optical element;
• and
• a projection optical apparatus disposed in an optical axis of light that exits out of the second reflective optical element,
• wherein the projection optical apparatus has
• an entrance optical path that the light that exits out of the second reflective optical element enters,
• a deflection member that deflects a direction of the light traveling along the entrance optical path, and
• a passage optical path along which the light that exits out of the deflection member travels, and
• an extension of a light exiting optical axis of the light source apparatus does not coincide with an extension of an optical axis of the entrance optical path and intersects with an extension containing an optical axis of the passage optical path,
• the projection apparatus further comprising an image generator that generates image light from the light passing through the second reflective optical element and outputs the image light in a direction opposite to a direction in which the light is incident from the second reflective optical element,
• wherein the second reflective optical element transmits the light incident from the first reflective optical element to cause the light to enter the image generator and reflects the image light incident from the image generator to cause the image light to exit toward the projection optical apparatus.

A projection apparatus comprising:

• a light source apparatus that outputs light via an exit port;
• a first reflective optical element that reflects at least part of the light outputted by the light source apparatus;
• a second reflective optical element disposed in an optical path of the light reflected off the first reflective optical element;
• and
• a projection optical apparatus disposed in an optical axis of light that exits out of the second reflective optical element,
• wherein the projection optical apparatus has
• an entrance optical path that the light that exits out of the second reflective optical element enters,
• a deflection member that deflects a direction of the light traveling along the entrance optical path, and
• a passage optical path along which the light that exits out of the deflection member travels, and
• an extension of a light exiting optical axis of the light source apparatus does not coincide with an extension of an optical axis of the entrance optical path and intersects with an extension containing an optical axis of the passage optical path,
• the projection apparatus further comprising a fan provided in a space between the light source apparatus and the projection optical apparatus and located on an opposite side of the extension of the light exiting optical axis of the light source apparatus from the optical axis of the entrance optical path.

A projection apparatus comprising:

• an exterior enclosure;
• a light source apparatus that outputs light via an exit port;
• a first reflective optical element that reflects at least part of the light outputted by the light source apparatus;
• a second reflective optical element disposed in an optical path of the light reflected off the first reflective optical element;
• a projection optical apparatus disposed in an optical axis of light that exits out of the second reflective optical element;
• and
• a first fan,
• wherein the projection optical apparatus has
• an entrance optical path that the light that exits out of the second reflective optical element enters,
• a deflection member that deflects a direction of the light traveling along the entrance optical path, and
• a passage optical path along which the light that exits out of the deflection member travels, and
• an extension of a light exiting optical axis of the light source apparatus does not coincide with an extension of an optical axis of the entrance optical path and intersects with an extension containing an optical axis of the passage optical path,
• the exterior enclosure has a first inner surface facing a direction of travel of the light deflected by the deflection member and a second inner surface located on an opposite side of the light source apparatus from the projection optical apparatus, and
• the first fan provided in a space among the first surface, the second surface, the light source apparatus and the projection optical apparatus and located on an opposite side of the extension of the light exiting optical axis of the light source apparatus from the optical axis of the entrance optical path.