LED Lamp with a Brightness Control Device

摘要

The present invention provides a headlamp capable of producing different light beams and fitted with a dynamic control mechanism for controlling the brightness minimizing light interference in all situations. The lamp comprises a light source with LED-type diodes; means for controlling the brightness and/or the geometry of the light beam; capturing means for generating an electrical signal representative of the reflected light intensity of the area illuminated by said light beam onto an illuminated object; and a control unit for generating control signals from the information generated by said capture system. The lamp has capturing means includes a focal system having a variable field under control of the control unit. Preferably, the capturing means includes at least two sensors with fixed focal length or, alternatively, a single sensor may be combined with a single controllable focal system electrically.

主权项

1. A lamp comprising
a light source having one or more LED-type diodes; means for controlling the brightness and/or the geometry of said light beam of said light source in response to a control information or control signal; capturing means for sensing light and generating an electrical signal representative of the reflected light intensity of the area illuminated by said light; a control unit for generating said control information or said control signal from the information generated by said capturing means;wherein said capturing means is associated with a variable focal field controlled by said control unit to generate corresponding electrical signals at different focal lengths.