Light diffusing lens for light emitting device

The present disclosure relates to a light diffusing lens for a light emitting device, and the light diffusing lens according to an embodiment of the present disclosure includes a light entering portion concavely formed on a center of a lower surface of a main body; a light emitting portion formed on an upper surface of the main body in a curved shape; a reflection portion formed on the lower surface of the main body along a circumference of the light entering portion; and a flange protruding outward from a lower end of the light emitting portion along an outer circumference of the main body, wherein the flange has a sheet escape recess formed on a lower portion thereof along a circumferential direction to allow an end of a sheet hole of a reflection sheet to escape thereinto, and is formedto be spaced apart from the reflection portion. 本发明涉及一种用于发光设备的光扩散透镜，且根据本发明的一实施例的光扩散透镜包括：一光进入部，凹入地形成在一主体的下表面的中心；一光发出部，以一弯曲状形成在所述主体的上表面上；一反射部，沿所述光进入部的周圈形成在所述主体的下表面上；以及一凸缘，沿所述主体的外周从所述光发出部的下端向外突出；其中，所述凸缘具有在其下部沿周向形成的一片逸出凹槽以允许一反射片