Patent ID: 8573975

Claim:
An interactive system, comprising: a head mounted apparatus comprising at least one photodetector affixed thereto, and a firing apparatus comprising a trigger-able activation mechanism, wherein said firing apparatus comprises: a light generating device for emitting a modulated light beam that includes information regarding said firing apparatus upon triggering of said firing apparatus in a direction toward said head mounted apparatus, and lens optics positioned in a path of said modulated light beam comprising a one dimensional lens for beam shaping said modulated light beam to provide a shaped modulated beam comprising a low divergence horizontal beam portion in a horizontal direction and a vertically elongated beam portion in a vertical direction; wherein said lens optics comprises a multi-lens arrangement comprising (i) a converging lens and (ii) said one dimensional lens, wherein said converging lens and said one dimensional lens have non-overlapping optics, and wherein said one dimensional lens provides said vertically elongated beam portion and said converging lens provides said low divergence horizontal beam portion; wherein said one dimensional lens comprises a cylinder lens or a one dimensional gradient index (GRIN) lens, or wherein said one dimensional lens comprises a negative lens that is aligned to provide said vertically elongated beam portion and to not affect said modulated light beam in said horizontal direction.