| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting or signalling device with depth effect. <P>SOLUTION: In the lighting or signalling device provided with an output unit, the output unit consists of a stack of screens, independent of one another, and each screen comprises a plurality of optical patterns 104 produced in its thickness, able to divert light signals 220 emitted by a light source. The spread of the light beam emerging from the device is thus adjustable in a first diffusion direction OX, corresponding, for each screen, to a direction parallel to a plane defined by the screen and containing the optical patterns, and in a second diffusion direction OZ, corresponding to a direction parallel to a plane roughly perpendicular to the planes defined by the screens, the spread on the second diffusion plane depending on the relative positions of the various screens. <P>COPYRIGHT: (C)2008,JPO&INPIT |
