Abstract: The invention relates to a display unit comprising a first display (3) with a dial face (4) and a pointer (5). In front of said first display (3), on the side facing the observer, a second display (7) is disposed and is transparent when not activated. Said second display is adapted to display information and is configured as a self-emitting display with negative representation. The second display (7) is a structural component that comprises an organic light-emitting substance (OLED).

Abstract: In an instrument cluster for motor vehicles with a variable-color display, with which at least two different measured variables and/or operating states of the motor vehicle can be represented in analog and/or digital form, when a value of a measured variable is overshot or a certain operating state of the motor vehicle is entered, the color and/or brightness of representation of more than one measured value displayed and/or operating state displayed are changed.

Abstract: The invention relates to a headup display having an image forming unit 1 for forming an item of image information to be displayed that can be projected as light beams 2 by the image forming unit 1 or via an optical projection system onto a partially reflecting windshield pane 7. The image forming unit 1 has an OLED display 8 for forming the image information be displayed, in front of which there is arranged a light directing element 14 by which the light beams 2 produced by the OLED display 8 can be directed approximately parallel to one another.

Abstract: A vehicle mirror has a mirror glass (1) which also forms a substrate for an OLED display (7). This OLED display (7) fully covers the mirror glass (1). A front cover glass (5) forms the second substrate for the OLED display (7).

Abstract: A laser levelling instrument with a levelling base (7) and fine self-levelling of the laser beam (10) has an inner cylinder (5) which bears aligning elements and is suspended in an oscillating manner inside an outer cylinder (1). The laser levelling instrument is characterized in that the outer cylinder (1) and the inner cylinder (5) form a capacitor system with opposite electrode faces; the outer cylinder (1) is joined at right angles to the base (7) and is centred with respect to the beam axis (11); and signals for detecting the oscillating position of the inner cylinder (5) may be derived from the capacitor system.

Abstract: A device for measuring distance with a visible measuring beam (11) generated by a semiconductor laser (10), has a collimator object lens (12) to collimate the measuring beam towards the optical axis (13) of the collimator object lens (12), an arrangement to modulate the measuring radiation, a reception object lens (15) to receive and image the measuring beam reflected from a distant object (16) on a receiver, a switchable beam deflection device (28) to generate an internal reference path between the semiconductor laser (10) and the receiver and an electronic evaluation device (25) to find and display the distance measured from the object. According to the invention, the receiver contains a light guide (17') with a downstream opto-electronic transducer (24), in which the light guide inlet surface (17) is arranged in the imaging plane of the reception object lens (15) for long distances from the object and can be controllably moved (18') from this position (18) transversely to the optical axis (14).

Abstract: An operating device with haptic response for the manual entering of information into a device comprises a setting member having a position which is variable under the action of an actuating force, and with which there is connected a transducer for producing electric signals which characterize the position of the setting member. There is connected with the setting member a braking element which, under control by the electric signals, exerts a force on the setting member, the value of which force depends on the position of the setting member. The braking element has at least two surfaces which are movable relative to each other and between which there is provided a force transmitting fluid the transmission properties of which can be varied by the electric signals.

Abstract: A device for measuring distance with a visible measuring beam (11) generated by a semiconductor laser (10), a collimator object lens (12) to collimate the measuring beam towards the optical axis (13) of the collimator object lens (12), a radiation arrangement to modulate the measuring radiation, a reception object lens (15) to receive and image the measuring beam reflected from a distant object (16) on a receiver, a switchable beam deflection device (28) to generate an internal reference path between the semiconductor laser (10) and the receiver and an electronic evaluation device (25) to find and display the distance measured from the object. According to the invention, the receiver contains a light guide (17') with a downstream opto-electronic transducer (24), in which the light guide inlet surface (17) is arranged in the imaging plane of the reception object lens (15) for long distances from the object and can be controllably moved (18') from this position (18) transversely to the optical axis (14).

Abstract: An MOS input buffer circuit includes an input connected to the gate electrode of an enhancement mode input MOSFET. The drain of the input MOSFET is connected to the output of the input buffer circuit. The source of the input MOSFET is connected to the drain of a second depletion mode MOSFET having its source connected to ground and its gate connected to a V.sub.DD voltage conductor. A load circuit is coupled between the V.sub.DD voltage conductor and the output, and consists of an enhancement mode MOSFET and a depletion load MOSFET coupled in series between output and V.sub.DD voltage conductor. A third depletion mode MOSFET has its drain connected to the V.sub.DD voltage conductor, its source connected to the source of the input MOSFET, and its gate connected to the output. The positive gain (or negative slope) portion of the switching characteristic of the input buffer circuit extends substantially all the way between the high and low output levels.