Optrel Ag

Lukas Steinemann

An anti-glare protection device for a welding mask includes a transmission control circuit for determining a darkening signal from a control signal, a welding activity detection circuit () for detecting a welding activity, based on the output of a first sensor circuit. The welding activity detection circuit is arranged to control, via an activation switch, whether either the darkening signal or a signal corresponding to an undarkened optical filter is input to a filter drive circuit. The filter drive circuit drives a controllable optical filter to a transmission value according to the signal input to the filter drive circuit. A manual input device allows a user to manually adjust a user selected signal. A second sensor circuit determines a sensed signal. A manually operable mode selection switch for selecting either, in a manual mode, the user selected signal or, in an automatic mode, the sensed signal to be used as the control signal to the transmission control circuit.

Anti-glare protection device

A welding protective mask () includes illumination equipment () for illuminating a work area. The illumination equipment () includes an illumination device (), a detection device () for detecting an ambient light intensity, an energy storage () for electrically supplying the illumination equipment () and controller () for controlling an intensity of light radiated by the illumination means () according to the ambient light intensity. In a preferred embodiment of the invention the controller () is set up to detect a welding process with a flicker circuit and to switch off the illumination device () during the welding process.

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Jona, Switzerland

Lukas Steinemann