초록 ▼

A projection type color image display apparatus includes: a light source for emitting white light; a first optical element for dividing the white light into a plurality of colored lights and for converging each colored light to form a plurality of spots, the spots of each colored light being formed

A projection type color image display apparatus includes: a light source for emitting white light; a first optical element for dividing the white light into a plurality of colored lights and for converging each colored light to form a plurality of spots, the spots of each colored light being formed at different positions from the spots of the other colored light; a liquid crystal display element including a plurality of pixels, the pixels corresponding to the spots and modulating the respective colored lights, whereby an image displayed by the liquid crystal display element is carried by the colored lights; a second optical element for diffracting the colored lights modulated by the liquid crystal display element to make a principal ray of each colored light substantially parallel to a principal ray of the other colored light; and a third optical element for receiving the colored lights from the second optical element and for projecting the image displayed by the liquid crystal display element while the image is enlarged.

대표청구항 ▼

[ What is claimed is:] [1.] A projection type color image display apparatus comprising:a light source for emitting white light;first optical means for dividing the white light into a plurality of colored lights and for converging each of the plurality of colored lights to form a plurality of spots,

[ What is claimed is:] [1.] A projection type color image display apparatus comprising:a light source for emitting white light;first optical means for dividing the white light into a plurality of colored lights and for converging each of the plurality of colored lights to form a plurality of spots, the spots of each of the plurality of colored lights being formed at different positions from the spots of the other of the plurality of colored lights;a liquid crystal display element including a plurality of pixels, the plurality of pixels corresponding to the plurality of spots formed by the first optical means and modulating the respective plurality of colored lights, whereby an image displayed by the liquid crystal display element is formed by the plurality of colored lights;second optical means for diffracting the plurality of colored lights modulated by the liquid crystal display element to make a principal ray of each of the plurality of colored lights substantially parallel to a principal ray of the other of the plurality of colored lights, the second optical means including at least one holographic element having a uniform optical property over an entire surface thereof; andthird optical means for receiving the plurality of colored lights from the second optical means and for projecting the image displayed by the liquid crystal display element while the image is enlarged.