| 摘要 |
PURPOSE: An optical sheet and a light emitting device package including the same are provided to improve optical efficiency by including the optical sheet which includes a fluorescent substance. CONSTITUTION: A body(110) comprises a cavity(120). A light source part(130) is mounted on the bottom surface of the body. A light-transmissive encapsulating material is filled in the cavity. An optical sheet(140) is located on the body in order to cover the cavity. The optical sheet comprises a base part(142) and a prism pattern(144) arranged on the base part.
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