Patent ID: 7744246

Claim:
An optical module including: at least one light emitting diode (LED) that emits light with a wide divergence; and a non-imaging optical element (NIO) that collects light emitted by the LED with high efficiency, compresses the collected light and directs the compressed light with a precalculated intensity distribution across a pattern, wherein the NIO further includes a first member located around a LED optical axis having a first end that collects light from the LED and a second end opposite the first end to transmit light; a second member located around the first member, wherein the second member has a first end to collect light and a second end opposite the first end to transmit light, and a wall formed therebetween, wherein an surface of the wall is curved to reflect light through the second end with a precalculated divergence that does not exceed a maximum angle; wherein the first member and the second member are integrated into a single element having a mutual focal point; wherein the optical module further comprises a plurality of LEDs; wherein the NIO element compresses light into a required pattern only in a vertical plane; wherein the optical module provides a linear pattern in a horizontal plane; and wherein the NIO element is shaped as rectangular bar in a horizontal cross-section and the plurality of LEDs are connected to an inner side of the bar at a distance from the first end of the first member equal to the focal length of the NIO element, and the LED axes located in a horizontal plane perpendicular to the rectangular bar longitudinal axis.