PROJECTILE OPTICAL DEVICE OF USING UNIFIED STRUCTURE

摘要

A projection optical device is provided to decrease a size of the projection optical device by using a rod lens instead of a light tunnel structure. A projection optical device includes a light source(10), an optical mixer(20), and a beam guide(30). The light source generates at least one beam. The optical mixer synthesizes the beams from the light source. The beam guide uniformly irradiates the synthesized beam. The optical mixer is integrated with the beam guide. The beam guide is composed of a rod lens. A collimating lens(40) magnifies the light which is emitted from the beam guide. The light source is a laser source. The laser source generates red, green, and blue laser beams.