Portable electric lamp provided with an anti-glare system

The lamp has a communication unit for exchanging identification or configuration data or control instructions with partner portable lamp and used for anti-glare function. Light sources (231, 232) allow generation of a light beam. A power unit controls brightness of light with respect to control information or control signal. A control unit (210) generates the control information or the control signal and comprises a sensor (222) for generating a signal that is representative of reflected light.