Patent ID: 6575579
Filing Date: 2003-06-10
Classification: G03B

Abstract:
A projecting device comprising:a housing; a light source installed in the housing for generating a trichrome light beam; a cylindrical color tube rotatably installed in the housing, having at least three transparent color-filters installed along its cylindrical side for allowing the trichrome light beam to pass through the transparent color-filters to generate corresponding monochrome light beams of various colors; a driving device installed in the housing for rotating the color tube so as to generate different monochrome light beams one by one; an optical modulator installed in the housing for converting an image signal into an image and modulating the image into each of the monochrome light beams outputted from the color tube to generate a modulated light beam; and a projecting lens installed in the housing for projecting the modulated light beam onto a screen.