Device for producing light and its application for lighting and light signing

摘要

The device (1) has a light source (11) associated to a main wave guide (10). The guide (10) has a light propagating envelope (100), which presents a refraction index (n1) more than a refraction index (n2) of an inner part (101) of the main guide in contact with the envelope. The light source is designed to inject a part of light produced in the envelope. A diffusion unit (12) diffuses a part of light circulating in the envelope towards exterior of the envelope on a portion of the envelope of preset length.