Image display apparatus having optical scanner

摘要

An image display apparatus having an optical scanner. The apparatus includes: an illumination optical system to emit a beam; a spectrometer that separates the beam emitted from the illumination optical system by reflecting and diffracting the beam at different diffraction angles according to a wavelength of the beam while rocking back and forth at a predetermined angle with respect to a rotational axis; a relay lens system that converts the beam separated by the spectrometer into parallel beams; an image optical system that produces an image by reflecting the parallel beams incident from the relay lens system; a screen and a projection optical system that projects the beams reflected by the image optical system onto the screen. The beam is reflected and diffracted at different diffraction angles to correspond on a one-to-one basis to each scanning line of the panel, thereby allowing a display of full-size, high brightness, and high resolution images using a single panel.