Patent ID: 8000019

Claim:
An optical system for a display panel comprising: a light source; a color separating portion for separating light that is emitted from the light source into a plurality of beams having different spectra; and a projecting portion for projecting the plurality of beams onto a plurality of divided areas of a predetermined range in the display panel, while sequentially switching the plurality of beams; wherein the color separating portion comprises: three light introducing members each for emitting the light that is incident from the light source through an emitting surface; a selecting portion that is arranged on an optical path between the light source and the three light introducing members, for selecting only one of the three light introducing members and for causing the light to be incident on the selected light introducing member; and three color separating members which are arranged on the emitting surface of each of the three light introducing members, said three color separating members for separating the light into three color beams, colors of the three color beams, generated by the three color separating members, being in a different order from each other, wherein the projecting portion further comprises a projecting means for projecting the three color beams which are emitted from the three color separating members onto the plurality of divided areas.