| 摘要 |
<p>The guide (2) has an elongated body made of transparent material and including a curved portion between a coupling zone and one of exit face (22) or reflection face of the body. A correction zone (12) forms diopters (16, 18) with material as that of the body. One of the diopters is arranged to refract light rays (14) from the coupling zone such that the rays reach the coupling zone or one of the faces irrespective of curve of the body. The diopter, which is met by the ray from the coupling zone, is configured for deviating the ray in a same direction as the curve of the body.</p> |
