Light conditioning for high-brightness white-light illumination sources

摘要

In one general aspect, the invention features an illumination source that comprises a housing and a plurality of LED illumination elements that are mounted proximate each other in a central cluster with respect to the housing and leaving a peripheral space around the cluster, with the peripheral space being significantly larger than a separation between the LED illumination elements in the cluster. A transparent housing cover is mounted with respect to the housing in front of an axis of illumination of the LED illumination elements. A tinted transparent housing cover and/or a smoothing LED can also be employed.