| 摘要 |
<p>An optical system has a lightguide having a confinement direction and a first light source (202) disposed proximate a periphery of the lightguide (204). A light injector (216) is disposed to couple light from the first light source (202) into the lightguide (204). The light injector (206) has a surface formed with a confinement curve for confining light in the confinement direction. The light injector (206) may be disposed at either a recess (244) on the periphery of the lightguide or at a cut corner of the lightguide. A refractive structure, haying at least one surface non-perpendicular to an emission axis of the light source may be disposed between the injector and the lightguide. At least a portion of the injector (206) may have a shape corresponding to a confinement curve that is rotated about an axis parallel to the confinement direction.</p> |
