Illumination apparatus and projection display apparatus
AssigneeSanyo Electric Co., Ltd.
InventorsMakoto MAEDA, Takaaki Abe
Life of this patent
Estimating the term…
Abstract
An illumination apparatus includes: a first dichroic mirror; a second dichroic mirror which separates the combined light into a red component light R and the green component light G; and a polarization adjuster provided on an optical path of the combined light between the dichroic mirrors. The polarization adjuster adjusts a polarization direction of a yellow component light Ye in the combined light. A second dichroic mirror separates the combined light into the red component light R on which a part of or all of the yellow component light Ye is superimposed and the green component light G on which the rest of the yellow component light Ye is superimposed.
Claims8
An illumination apparatus which uses a fourth color component light in addition to a first color component light, a second color component light, and a third color component light, the fourth color component light having a waveband between wavebands of the first color component light and second color component light, comprising:
- a first color separator configured to separate the third color component light from a combined light including the first color component light, the second color component light and the fourth color component light;
- a second color separator configured to separate the combined light, which is separated by the first color separator, into the first color component light and the second color component light;
- and
- a first polarization adjuster provided on an optical path of the combined light between the first color separator and the second color separator,
- wherein the first polarization adjuster adjusts a polarization direction of the fourth color component light in the combined light, and
- the second color separator separates the combined light into the first color component light on which a part of or all of the fourth color component light is superimposed and the second color component light on which a rest of the fourth color component light is superimposed.
A projection display apparatus which includes a first imager configured to modulate a first color component light, a second imager configured to modulate a second color component light and a third imager configured to modulate a third color component light, and which uses a fourth color component light in addition to the first color component light, the second color component light, and the third color component light, the fourth color component light having a waveband between wavebands of the first color component light and the second color component light, the projection display apparatus comprising:
- a first color separator configured to separate the third color component light from a combined light including the first color component light, the second color component light, and the fourth color component light;
- a second color separator configured to separate the combined light, which is separated by the first color separator, into the first color component light and the second color component light;
- a first polarization adjuster provided on an optical path of the combined light between the first color separator and the second color separator;
- and
- a projection lens unit configured to project color component lights emitted from the first imager, the second imager and the third imager, wherein
- the first polarization adjuster adjusts a polarization direction of the fourth color component light in the combined light, and
- the second color separator separates the combined light into the first color component light on which a part of or all of the fourth color component light is superimposed and the second color component light on which a rest of the fourth color component light is superimposed.
Dependencies are inferred from the claim text.