| 摘要 |
An exemplary optical lens ( 300 ) includes a top surface ( 301 ), a base portion ( 304 ) opposite to the top surface, and a peripheral side surface defining a first refractive portion ( 302 ). The top surface is a generally funnel-shaped top surface. The first refractive portion is corrugated with a plurality of protruding ridge structures, and each of the ridge structures includes a refractive surface ( 3021 ). An exemplary light emitting device incorporating the optical lens is also provided.
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