Light emitting diode linear light with uniform far field

摘要: Described is a light emitting diode (LED) linear illumination system that includes array of LED groups, high efficiency non-imaging optics and aberration corrected imaging optics. Each group can include one or more LEDs. The provides uniform intensity in near far fields. System applications machine vision inspection reflectivity targets. Illumination colors, including white light. described has improved thermal optical performance generally compact lower cost relative to conventional systems based on pre-packaged commercially available devices.