LED luminaire with optical sensor structure for optical feedback
A technology of light-emitting diodes and optical sensors, which is applied to optical elements, electroluminescent light sources, and devices with multiple detectors for changing the spectral characteristics of emitted light, etc. question
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[0022] With reference to the accompanying drawings, figure 1 is a schematic cross-sectional view of one embodiment of the optical components of the RGB light emitting diode light source of the present invention, the light emitting diode array 101 includes individual light emitting diode assemblies (102, 103, 104), which are arranged in two concentric rings around the central axis A stand-alone LED components. Each LED assembly includes a sealed LED package 126 and a collimating lens 120 . Optical sensor assembly 105 is located on central axis A and includes diffuser 109, concentrator 110, and photodiode arrays 112, 113, 114 (see figure 2 and 3 ).
[0023] The main condenser lens 106 directs the light output from the LED array 101 to the target light guide 108 . A suitably shaped partial reflector 107 is provided in the region between the main condenser lens 106 and the target light guide 108 . The partial reflector 107 should have a total reflectivity of about 1%, which ...
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