Patent ID: 6961192
Filing Date: 2005-11-01
Classification: G02B,H04N

Abstract:
1. A color lighting system, comprising: a light source to emit light; a color beam separator separating incident light emitted from the light source according to predetermined wavelength bands and transmitting the separated beams at different angles; a first condensing lens condensing the separated beams; and a scrolling unit changing travel paths of the condensed beams in color bars at different locations, and scrolling the changing of the travel paths of the condensed beams so as to periodically scroll the color bars, and wherein the scrolling unit comprises; a turning cylinder array lens, rotatably disposed along an optical path of light, incident on the scrolling unit, including a plurality of adjacently disposed cylindrical lenses, along an outer circumference portion of the turning cylinder array lens, having a cylinder shape; and a driving unit rotatably driving the turning cylinder array lens, and wherein the turning cylinder array lens is a diffraction optical element, forming the plurality of cylindrical lenses, using a diffraction pattern.