Abstract
Abstract— Light extraction from InGaN‐based light‐emitting diodes (LEDs) on which microlens arrays were integrated using ray‐tracing methods was simulated. Enhancement of the total light extraction and beam shaping in the forward direction of the output of microlens‐integrated LEDs compared to conventional LEDs were observed. The diameter, curvature radius, and density of the microlens arrays on the LEDs were varied and the optimal conditions for external efficiency was determined.
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