Abstract: A lens assembly with a high uniform rectangular focused halo comprises: a first lens and an adjacent second lens. The first lens includes a first incident surface, a first non-spherical surface, and a first convex array emitting surface. The first incident surface contains a light source focus, and the first convex array emitting surface consists of multiple non-spherical convex arrays having rectangular openings. The second lens includes a second concave array incident surface and a second non-spherical surface emitting surface. The second concave array incident surface consists of multiple non-spherical concave arrays having rectangular openings corresponding to the first convex array emitting surface. The lens assembly provided by the present invention allows light to pass through only one total internal reflection lens and one flat convex lens so that the energy can be focused, while maintains an ultra-high optical efficiency.

Abstract: A multi-processor system includes multiple processors arranged in multiple clusters. Different clusters have different power and performance characteristics. The system includes a task scheduler to schedule tasks to the processors. The task scheduler, in response to detection of a scheduling event trigger, is operative to identify a scheduling objective between a first objective of energy optimization and a second objective of load balance. The scheduling objective is identified based on at least respective operating frequencies and loading of all processors in a highest-capacity cluster of the multiple clusters. According to the identified scheduling objective, the task scheduler schedules a given task to a processor selected among the processors in the multiple clusters.

Abstract: A multi-processor system includes multiple processors arranged in multiple clusters. Different clusters have different power and performance characteristics. The system includes a task scheduler to schedule tasks to the processors. The task scheduler, in response to detection of a scheduling event trigger, is operative to identify a scheduling objective between a first objective of energy optimization and a second objective of load balance. The scheduling objective is identified based on at least respective operating frequencies and loading of all processors in a highest-capacity cluster of the multiple clusters. According to the identified scheduling objective, the task scheduler schedules a given task to a processor selected among the processors in the multiple clusters.