Abstract: A portable lamp, such as a headlamp is presented. The lamp contains a light source comprising one or more sources for generating at least one light beam; a means for controlling the brightness of said at least one beam in response to a control information or a control signal; and a control unit for the purpose of generating said control information or said control signal. The control unit contains a photo sensor and a regulation circuit controlling a switch-off phase of one or more beams during a period not visible to the holder of the lamp. The switch off phase being combined with at least one measure of diversity made by means of the photo sensor(s) on the reflective ambient environment.

Abstract: The invention relates to a portable electric lamp with a light source generating at least one light beam; and a pane of glass arranged in front of the light source. The pane of glass has an electro-optical diffusion device controlled by an electrical signal in order to generate electrically adjustable diffusion. This diffusion generates a light beam with variable geometry from the single narrow beam. This results in headlamps with improved control of the geometry of its lightbeams.

Abstract: A portable lamp comprising: Communication means for exchanging identification data, configuration settings or control instructions with another portable lamp. More specifically, the communication means are used for avoiding exposition to glare.

Abstract: A portable lamp, such as a headlamp, comprising: a light source comprising one or more sources for generating at least one light beam; means for controlling the brightness of said at least one beam in response to a control information or a control signal; a control unit for the purpose of generating said control information or said control signal; wherein said control unit comprises at least a photo sensor and a regulation circuit controlling a switch-off phase of one or more beams during a period not visible to the holder of the lamp, said switch off phase being combined with at least one measure of diversity made by means of said photo sensor(s) on the reflective ambient environment.

Abstract: A portable lamp comprising: Communication means for exchanging identification data, configuration settings or control instructions with another portable lamp. More specifically, the communication means are used for avoiding exposition to glare.