Patent ID: 8870416
Filing Date: 2014-10-28
Classification: F21S,F21V,G02B,H01L

Abstract:
1. A LED package structure having a light-projecting angle adjusting function, comprising: a substrate unit including a substrate body; a light-emitting unit including at least one light-emitting element disposed on the substrate body and electrically connected to the substrate body; a support unit including a support element disposed on the substrate body and surrounding the at least one light-emitting element; a lens unit including an electrically-controlled zoom lens disposed above the at least one light-emitting element and retained by the support element, wherein the electrically-controlled zoom lens has a variable focal length, and light beams generated by the at least one light-emitting element pass through the electrically-controlled zoom lens to form a projection light source; a first input unit including a first signal input module for providing a first predetermined voltage signal; a second input unit including a wireless receiver, a second signal input module for providing a second predetermined voltage signal, and a wireless transmitter disposed inside the second signal input module and corresponding to the wireless receiver, wherein the second predetermined voltage signal provided by the second signal input module is wirelessly transmitted to the wireless receiver through the wireless transmitter; and a control unit including a voltage controlling module electrically connected between the electrically-controlled zoom lens and the first signal input module and electrically connected between the electrically-controlled zoom lens and the wireless receiver, wherein the voltage controlling module provides a predetermined voltage value for the electrically-controlled zoom lens according to the first predetermined voltage signal provided by the first signal input module or according to the second predetermined voltage signal received by the wireless receiver, and the variable focal length of the electrically-controlled zoom lens is adjusted according to the predetermined voltage value provided by the voltage controlling module.