A headlamp comprising - a light source comprising one or more LED-type diodes; - a power module for supplying current to said light source, said power module being controlled by a control information or a control signal; - a control module for adjusting the light intensity generated by said light source; - a light sensor for sensing light from the environment of the lamp holder, said control module being configured to generate said control information or said control signal according to the information generated by said light sensor, - an accelerometer configured to provide at regular intervals data representative of an acceleration of the headlamp along at least one horizontal axis and one vertical axis; wherein said control module includes circuitry (221, 222, 223) configured to digitally store and process data representative of said acceleration; characterized in that - said control module is configured for selecting a physical activity profile selected from a set of predetermined physical activities stored within a memory from data representatives of said acceleration being digitally processed; and wherein said control module comprises a LUT look-up table stored within said memory providing at least one value or adjustment parameter serving for generating said control information or said control signal; wherein the physical activity profile serves as an entry pointer into said LUT; wherein the value or adjustment parameter read from said LUT is used in conjunction with information generated by the light sensor to determine said control information or said control signal. - a light source comprising one or more LED-type diodes; - a power module for supplying current to said light source, said power module being controlled by a control information or a control signal; - a control module for adjusting the light intensity generated by said light source; - a light sensor for sensing light from the environment of the lamp holder, said control module being configured to generate said control information or said control signal according to the information generated by said light sensor, - an accelerometer configured to provide at regular intervals data representative of an acceleration of the headlamp along at least one horizontal axis and one vertical axis; wherein said control module includes circuitry (221, 222, 223) configured to digitally store and process data representative of said acceleration; characterized in that - said control module is configured for selecting a physical activity profile selected from a set of predetermined physical activities stored within a memory from data representatives of said acceleration being digitally processed; and - said control module is configured for selecting a physical activity profile selected from a set of predetermined physical activities stored within a memory from data representatives of said acceleration being digitally processed; and wherein said control module comprises a LUT look-up table stored within said memory providing at least one value or adjustment parameter serving for generating said control information or said control signal; wherein the physical activity profile serves as an entry pointer into said LUT; wherein the value or adjustment parameter read from said LUT is used in conjunction with information generated by the light sensor to determine said control information or said control signal.