Abstract: Electro-optical glare protection device comprising a liquid crystal (LCD) and an electronic control circuit (75) for controlling same, whereby a plane-parallel liquid crystal cell (LCD) is joint face to have at least on one side with a plane lens (33, 34, 37, 33, 42, 43, 46, 47, 52, 53, 56, 57) in order to form a neutral lens (31, 35) or an ophthalmic lens (41, 45, 51, 55) and in particular a multi-focal or progressive lens. This electro-optical glare protection device is preferably operated in a “normally-black” mode and comprises a wearing-switch (78) which detects whether the anti-glare device is worn or if it is pushed aside or put aside.

Abstract: The invention relates to a face and antiglare protection device (1) for observing an object field or a workplace with light intensity differences varying in time and/or space of, for example, 10000:1, as in welding operations. The device (1) comprises at least one camera (4) for generating electronic image signals, at least one sensor (5) for generating electronic measuring data, at least one electronic system (8) for processing the image signals and the measuring data and at least one display for the optical representation of the object field and the measured data. According to the invention, the device comprises at least two electronic cameras (4) having a different spectral and/or spatial resolution. The electronic system (8) is provided with image analyzing means which analyze the image signals captured by said electronical cameras (4) and, preferably, the measuring data of the at least one sensor (5).