Patent ID: 8820990
Filing Date: 2014-09-02
Classification: B29C,B29K,F21S,G02B

Abstract:
1. A vehicle lamp comprising: a transparent element comprising: a first light source coupled via a light coupling point into the rod-shaped second optical area along a direction of elongation of the second optical area; light from the first light source decoupled via at least one light decoupling point along the rod-shaped second optical area; at least one second light source emitting light toward the transparent element such that a first portion of the light passes sequentially through a first portion of the first contiguous optical area, through the optical boundary layer and through the rod-shaped second optical area, and through a second portion of the first contiguous optical area, such that a second portion of the light passes through the transparent element without encountering the optical boundary and rod-shaped second optical area; and the rod-shaped second optical area appearing transparent and unlighted by the first light source from outside the vehicle lamp except at the at least one light decoupling point along the rod-shaped second optical area based at least in part on the relative optical indices of refraction of the two optical areas.