Projector

A projection-type display apparatus projector comprising:

• a light source for outputting a light beam;
• a first optical element for splitting the light beam output from the light source into a plurality of intermediate light beams;
• a second optical element including a polarization conversion unit and superimposing means for superimposing light beams output from the polarization conversion unit, wherein the second optical element is arranged in a vicinity of a position where the intermediate light beams are converged, the second optical element separates each of the intermediate light beams from the first optical element into a p-polarized light beam and a s-polarized light beam, the second optical element further aligns a polarization direction of one of the p-polarized light beam and the s-polarized light beam with the polarization direction of the other of the p-polarized light beam and the s-polarized light beam, and the second optical element outputs the resulting light beams;
• modulating means for modulating the light beams emitted from the second optical element;
• and
• projection means for enlarging and projecting the modulated light beams from the modulating means to a projection screen, wherein a mounting position of the superimposing means is adjustable.

A projection-type display apparatus projector comprising:

• a light source that emits a light beam;
• modulating means for modulating the light beam emitted by the light source;
• projection means for enlarging and projecting the modulated light beam from the modulating means onto a projection screen;
• an optical element, located in an optical path between the light source and the modulating means, that splits the light beam emitted from the light source into a plurality of intermediate light beams;
• superimposing means for superimposing each of the intermediate light beams from the optical element onto an image forming area of the modulating means;
• and
• an adjusting mechanism that adjusts a mounting position of the superimposing means.

A projection-type display apparatus projector comprising:

• a light source that outputs a light beam;
• a first optical element that splits a light beam from the light source into a plurality of intermediate light beams;
• a second optical element including a polarization conversion unit and superimposing means for superimposing light beams output from the polarization conversion unit, wherein the second optical element is arranged in a vicinity of a position where the intermediate light beams are converged, the second optical element separates the intermediate light beams from the first optical element into a p-polarized light beam and a s-polarized light beam, the second optical element aligns a polarization direction of one of a p-polarized light beam and a s-polarized light beam with the polarization direction of the other of the p-polarized light beam and the s-polarized light beam, and the second optical element outputs the resulting light beams;
• modulating means for modulating the light beams emitted from the second optical element;
• projection means for enlarging and projecting the modulated light beams from the modulating means onto a projection screen;
• and
• an adjusting mechanism for adjusting a mounting position of the superimposing means.

A projector comprising:

• a light source for emitting a light beam;
• modulating means for modulating the light beam emitted by the light source;
• projecting means for projecting the modulated light beam from the modulating means onto a projection screen;
• an optical element, disposed in an optical path between the light source and the modulating means, for splitting the light beam into a plurality of intermediate light beams;
• superimposing means for superimposing each of the intermediate light beams onto an image forming area of the modulating means;
• a power supply;
• an input/output interface circuit;
• a video signal processing circuit;
• a control circuit for driving and controlling the projector;
• and
• an outer casing for housing the light source, the modulating means, the optical element, the superimposing means, the power supply, the input-output interface circuit, the video signal processing circuit, and the control circuit, wherein, a mounting position of the superimposing means is adjustable.

A projector comprising:

• a light source for emitting a light beam;
• a first optical element for splitting the light beam output from the light source into a plurality of intermediate light beams;
• a second optical element including a polarization conversion unit and superimposing means for superimposing light beams output from the polarization conversion unit, wherein the second optical element is arranged in a vicinity of a position where the intermediate light beams are converged, the second optical element separates each of the intermediate light beams from the first optical element into a p-polarized light beam and an s-polarized light beam, the second optical element further aligns a polarization direction of one of the p-polarized light beam and the s-polarized light beam, and the second optical element outputs the resulting light beams;
• modulating means for modulating the light beam emitted from the second optical element;
• projecting means for enlarging and projecting the modulated light beams from the modulating means onto a projection screen;
• a power supply;
• an input/output interface circuit;
• a video signal processing circuit;
• a control circuit for driving and controlling the projector;
• and
• an outer casing for housing the light source, the first and second optical elements, the modulating means, the power supply, the input-output interface circuit, the video signal processing circuit, and the control circuit, wherein, a mounting position of the superimposing means is adjustable.

A projector comprising:

• a light source for emitting a light beam;
• modulating means for modulating the light beam emitted by the light source;
• projecting means for projecting the modulated light beam from the modulating means onto a projection screen;
• an optical element, located in an optical path between the light source and the modulating means, that splits the light beam emitted from the light source into a plurality of intermediate light beams;
• superimposing means for superimposing each of the intermediate light beams onto an image forming area of the modulating means;
• an adjusting mechanism that adjusts a mounting position of the superimposing means;
• a power supply;
• an input/output interface circuit;
• a video signal processing circuit;
• a control circuit for driving and controlling the projector;
• and
• an outer casing for housing the light source, the modulating means, the optical element, the superimposing means, the adjusting mechanism, the power supply, the input-output interface circuit, the video signal processing circuit, and the control circuit.

A projector comprising:

• a light source for emitting a light beam;
• a first optical element for splitting the light beam output from the light source into a plurality of intermediate light beams;
• a second optical element including a polarization conversion unit and superimposing means for superimposing light beams output from the polarization conversion unit, wherein the second optical element is arranged in a vicinity of a position where the intermediate light beams are converged, the second optical element separates each of the intermediate light beams from the first optical element into a p-polarized light beam and an s-polarized light beam, the second optical element further aligns a polarization direction of one of the p-polarized light beam and the s-polarized light beam, and the second optical element outputs the resulting light beams;
• modulating means for modulating the light beam emitted from the second optical element;
• projecting means for enlarging and projecting the modulated light beam from the modulating means onto a projection screen;
• an adjusting mechanism for adjusting a mounting position of the superimposing means;
• a power supply;
• an input/output interface circuit;
• a video signal processing circuit;
• a control circuit for driving and controlling the projector;
• and
• an outer casing for housing the light source, the first and second optical elements, the modulating means, the adjusting mechanism, the power supply, the input-output interface circuit, the video signal processing circuit, and the control circuit.