A color lighting apparatus and method which has a small optical apparatus or
method
illuminating color beams with a high optical efficiency and an image projection
apparatus and method using the same. The color lighting apparatus includes a light
source, a color beam separating unit for separating incident light according to
predetermined wavelength bands, a first condensing lens which condenses the light
separated by the color beam separating unit, and a scrolling unit which changes
the travel paths of beams separated according to the predetermined wavelength bands,
forms color bars at different locations, and scrolls the incident light so as to
periodically scroll the color bars. The image projection apparatus includes the
color lighting apparatus, a second condensing lens which again focuses incident
light, a uniform light forming unit which makes light passing through a scrolling
unit into uniform light, an image forming device which forms an image from the
light passing through the uniform light forming unit, and a projection lens unit
which magnifies and projects the image produced form the image forming device onto
a screen.