OPTICAL STRUCTURE OF PATTERN IMAGE PROJECTOR

摘要

The present invention relates to an optical structure of a pattern image projector. More specifically, the optical structure of a pattern image projector enables selective projection of various pattern images and implementation of various colors by combining LED light sources. The optical structure of a pattern image projector according to the present invention includes: LED light sources; a first light emission lens which has a positive refractive force to collect the light emitted from the LED light sources for the first time; an illumination lens unit which is formed on the front surface of the first light emission lens and includes a second light emission lens with a positive refractive force to form a light perpendicular to the light axis with the light collected in the first light emission lens; a pattern chart unit has an image formed with the light collected from the illumination lens unit; and a projection lens unit which projects the image on the pattern chart to the outside.