Invention Grant
US08011811B2 Aspherical LED angular lens for central distribution patterns and LED assembly using the same 失效
用于中央配电图案的非球面LED角度透镜和使用其的LED组件

Aspherical LED angular lens for central distribution patterns and LED assembly using the same
Abstract:
The present invention discloses an aspherical LED angular optical lens for central distribution patterns and an LED assembly using the same. The optical lens comprises a concave surface on a source side and a convex surface on an project side. The LED assembly comprising the optical lens can accumulate light emitted from the LED die and generate a peak intensity of the central angular circle distribution pattern which is greater than 72° and smaller than 108°. The present invention only uses a single optical lens capable of accumulating light and forming a required distribution pattern to satisfy the requirement of a luminous flux ratio greater than 85% and the requirement of an illumination, a flash light of a cell phone or a flash light of a camera.
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