Patent ID: 6939008

Claim:
A projection type display device comprising: a light source for emitting light including a plurality of light components falling within mutually different wavelength ranges; a plurality of pixels for modulating the light independent of each other; a first optical system, which receives the light that has been emitted from the light source and directs the light toward the pixels; a second optical system, which projects the light that has been modulated by the pixels onto a projection plane, wherein the first optical system includes at least one optical element for converging the light components onto mutually different ones of the pixels in accordance with their wavelength ranges, the mutually different ones of the pixels being arranged in a predetermined azimuth on a panel plane on which the pixels are defined, wherein the optical element is elongated in shape and has first and second lengths as measured in first and second directions that are defined in a common plane, respectively, the first direction being substantially parallel to the predetermined azimuth, the second direction being substantially perpendicular to the first direction, the second length being greater than the first length so that the optical element is elongated in shape, wherein the optical element converges the light components both in the first and second directions; wherein the optical element is a microlens; wherein the light comprises first, second and third different colored wavelengths, the first colored wavelength impinging upon the microlens at an angle normal to the common plane and the second and third different colored wavelengths impinging upon the optical element at angles inclined from the normal so that the first, second and third different colored wavelengths impinge upon the microlens at different angles; and wherein the microlens converges light of the first wavelength onto a pixel that is overlapped by the microlens, and the microlens directs light of the second and third wavelengths onto respective other pixels that are not overlapped by the microlens.