Patent ID: 8567956

Claim:
A projector comprising: a light source; a light modulation element having a plurality of pixels arranged in a matrix to which an image data is written in a line sequential manner, and adapted to modulate the light from the light source based on the image data written to the pixels; a polarization switching element having a plurality of linear switching areas adapted to switch a polarization state of the light input between a first polarization state and a second polarization state, and adapted to switch between the first polarization state and the second polarization state in a line sequential manner throughout the plurality of switching areas; a birefringent optical element adapted to change alight path of a light input from the polarization switching element in accordance with the polarization state to thereby emit the light from a different position; a light transmission optical system adapted to transmit the light modulated by the light modulation element to the polarization switching element, and to roughly image the light in the polarization switching element to form an intermediate image; a projection optical system adapted to project the intermediate image formed in the polarization switching element; and a control section adapted to control the polarization switching element, wherein the control section switches between the first polarization state and the second polarization state in a line sequential manner so that a boundary position between the switching area of the polarization switching element set to the first polarization state and the switching area set to the second polarization state moves roughly in sync with a movement of a boundary position on the intermediate image corresponding to a boundary position between an area on the light modulation element to which a first image data corresponding to a first sub-frame is written and an area to which a second image data corresponding to a second sub-frame temporally contiguous to the first sub-frame is written.