| 摘要 |
PROBLEM TO BE SOLVED: To provide stroboscopic LED light sources for use with devices for improving the processing of fluids, such as blood, components of blood and fluids derived from blood. SOLUTION: The invention relates to apparatus for separating blood into blood components, particularly components for stroboscopic LED light sources for centrifuges. The stroboscopic apparatus comprises a first light source with reflective surfaces spaced around a central illumination axis, and light-emitting diodes spaced away from the axis radially outward from the reflective surfaces. An additional light source comprises a modified parabolic reflector surrounding a light emitting diode, the parabolic reflector having walls spaced outwardly from an axis of symmetry such that focal points fall radially outwardly from a center of the LED, forming a circular focal area. A controller that energizes the diodes to emit light for selected periods of time comprises a pair of switches connected in series, with an LED connected between the switches. One of the switches is connected to ground and is closed at the end of a period of illumination. COPYRIGHT: (C)2011,JPO&INPIT
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