| 摘要 |
PURPOSE: An LED(Light Emitting Diode) lighting device is provided to control the center illuminance by appropriately controlling the location of condensing lenses and unit reflectors. CONSTITUTION: An optical source part(20) comprises a circuit board(21), a plurality of LED packages(23), and a plurality of condensing lenses(25). A plurality of LED packages are installed on the circuit board. A unit reflector is arranged on a part of LED packages among a plurality of LED packages. The unit reflector has a light guide hole. The both side reflection sidewall of the light guide hole has an asymmetry angle of inclination. The condensing lens is arranged on the rest LED package. |
