A device such as an integrated display device and projector apparatus
using said display device for projecting an image on a screen comprises a
number of light sources, waveguides, optical switches, micro-lenses and
scanning mirrors. The display apparatus consists of said display device,
a modulator circuit, an optical switch controller, a scanning mirror
controller, a synchronizer and projection optics. This device enables the
projector apparatus to be extremely small and to reduce its power
consumption in comparison with conventional projectors.