JPS643834U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an optical system according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram of a portion of FIG. 1. In the figure, 1 is a light source, 2 is a condenser system, 3 is a display body, 4 is a projection lens, 5 is a birefringent plate, 6 is a screen surface, and 7 is a quarter wavelength plate.

Claims (1)

[Claims for Utility Model Registration] (1) In a projector that projects a display body consisting of a plurality of pixels arranged with gaps between the pixels onto a screen surface using a projection lens,
The projection lens is provided with a birefringent plate in a gap between each pixel of the display body projected onto the screen surface so that a projected image of at least one pixel of pixels adjacent to the gap is separately projected. and the display body. (2) The birefringent plate has a thickness such that, when separating the passing light beam into ordinary rays and extraordinary rays, the amount of separation separates the projected image on the screen surface by approximately half the array pitch of the projected pixels. 2. A projector according to claim 1, characterized in that the projector has the following features: (3) Utility model registration claim 2, characterized in that the birefringent plate is constructed by joining two birefringent plates with optical axes set so as to separate light rays in two different directions. The projector described in section. (4) The projector according to claim 3, wherein a quarter wavelength plate is disposed between the two birefringent plates.