LIGHTING DEVICE, PATTERN RADIATION DEVICE AND SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a pattern radiation device capable of getting a high optical output and reducing its size and cost.SOLUTION: This invention relates to a pattern radiation device 20 for radiating an image of predetermined pattern to a projecting surface 30. The pattern radiation device comprises a light-emitting part 31 for emitting light; a light collecting part 32 for collecting light emitted from the light-emitting part; a diffusion part 33 for diffusing light collected by the light collecting part 32; unifying optical system 34 [light tunnel] for inputting light diffused by the diffusion part, unifying a light intensity distribution more than that of input light and emitting it; an image forming part 35 for passing the light emitted from the unifying optical system in response to the predetermined image pattern; and a radiation optical system 36 for radiating light passed through the image forming part 35 against the projecting surface 30.SELECTED DRAWING: Figure 2