| 摘要 |
This invention relates to a collimation structure of LED module and a lamp using said LED module. The collimation structure of the present invention mainly has a lens provided at a place along the irradiation direction of the light beam emitted from LED. The lens has a first curved surface and a second curved surface, and the curvatures of both are different from each other. In this manner, the object of collimating the light emitted from the LED can be achieved by the provision of the first curved surface and the second curved surface and by the difference between the curvatures of the first curved surface and the second curved surface. Moreover, the collimated beam pattern of the light output through the lens can be changed by the variation of the curvatures of the first curved surface and the second curved surface so that said LED can fulfill the requirement of the application in illumination or alarming. |
