| 摘要 |
<p>An optical signal emitter assembly (20) emits light pulses which are received by an optical traffic preemption system detector. The optical signal emitter assembly employs a honeycomb element (40) positioned in front of a light source (36) which collimates light emitted by the optical signal emitter assembly. The optical signal emitter assembly is convertible from a stand-alone unit containing power supply circuitry (32), timing circuitry (34), and a light source (36) in a single housing, to a unit wherein the light source can be mounted independently from a housing containing the power supply circuitry and the timing circuitry. <IMAGE></p> |
