| 摘要 |
The present invention refers to a lens for a signal light, which lens is configured to convert a first distribution of light rays emitted from a light source (23) into a second distribution of light rays. The lens comprises at least three sectors and each lens sector has at least one internal surface (42i-44i) and at least one corresponding external surface (42e-44e) arranged to convert the first distribution into the second distribution. The internal (42i-44i) and external (42e-44e) surfaces .form an overall internal surface (40i. 140i) and a corresponding external surface (40e, 140e) free from undercuts. At least one sector has an internal surface (43i) arranged to refract the light rays emitted from the light source (23) , and at least two external surfaces (43el, 43e2), wherein a first of the two external surfaces is arranged to reflect the rays refracted by the internal surface (43i) and a second of the two external surfaces (43e2) is arranged to refract the rays reflected by the first external surface (43el) . The invention also concerns a method of manufacturing the lens and a signal light, in particular for naval use. |
