反光杯是指用点光源灯泡为光源，需远距离聚光照明的反射器，通常杯型，俗称反光杯。
本发明采用反光杯作为LED光通量收集装置。
The present invention adopts a reflective cup as an LED light flux collecting device.
针对反光杯结构的关键要素：反光杯形状、反光杯深度、反光杯角度，优化设计了LED光学结构。
On the basis of the several key elements of reflective cup structure, indluding its shape, depth, and angle, this paper optimized the design of LED optical structure.
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