Abstract: The invention relates to an opto-electronic input device (10), wherein the input is formed by detected movements of an object (M), which opto-electronic input device is provided with an optical module (11) comprising at least one laser (1) mounted on a carrier plate (4), which laser emits a radiation beam (S) that is guided to a plate (V) close to the object (M) and, after reflection therefrom, causes a change in the resonant cavity of the laser (1) which is representative of the movement of the object (M), and which is measured within the module (11).

Abstract: The invention relates to an optoelectronic input device (10) in which the input is formed by detected movements of an object (M), the device comprising an optical module (11) comprising at least one laser (1,1?) with a cavity for the generation of a measuring radiation beam (S), optical means (2) for the guidance of the radiation beam (S) to a plane (V) close to the object (M) and conversion means (C) for the conversion of measuring beam radiation reflected and modulated by the object into an electrical signal, wherein the conversion means (C) are formed by a combination of the cavity of the laser (1) and measuring means (3) for measuring a change in the cavity during operation, which radiation is caused by reflected radiation entering the cavity.

Abstract: The invention relates to an opto-electronic input device (10), wherein the input is formed by detected movements of an object (M), which opto-electronic input device is provided with an optical module (11) comprising at least one laser (1) mounted on a carrier plate (4), which laser emits a radiation beam (S) that is guided to a plate (V) close to the object (M) and, after reflection therefrom, causes a change in the resonant cavity of the laser (1) which is representative of the movement of the object (M), and which is measured within the module (11).

Abstract: The invention relates to an optoelectronic input device (10) in which the input is formed by detected movements of an object (M), the device comprising an optical module (11) comprising at least one laser (1,1?) with a cavity for the generation of a measuring radiation beam (S), optical means (2) for the guidance of the radiation beam (S) to a plane (V) close to the object (M) and conversion means (C) for the conversion of measuring beam radiation reflected and modulated by the object into an electrical signal, wherein the conversion means (C) are formed by a combination of the cavity of the laser (1) and measuring means (3) for measuring a change in the cavity during operation, which radiation is caused by reflected radiation entering the cavity.

Abstract: The transformer comprises a rotor core (1) in the form of a circular ferromagnetic disc which is rotatable about its axis (5), and a stator core (3) in the form of a circular, stationary ferromagnetic disc which is coaxial with the rotor core. The facing main surfaces of these discs are provided with grooves (11, 13) and ridges (15, 17) which are concentric with respect to the axis (5). In the grooves (11, 13) there are provided rotor windings (19) and stator windings (21), respectively. The stator windings (21) consist of conductor tracks on at least one main surface of a circular first portion (25) of a flexible, electrically insulating foil which is connected, via a strip-shaped intermediate portion (27) with connection conductor tracks (41), to a second circular foil portion (29) which supports further conductor tracks (37) and components (39) of an electronic circuit.

Abstract: A miniaturized electric coil having a low self-capacitance comprises a bottom conductor pattern provided on a substrate, an insulating intermediate layer and a top conductor pattern which is connected to the bottom conductor pattern via windows in the intermediate layer. The bottom and top conductor layers each comprise n single spiral-like paths. The inner end of the first spiral of the bottom conductor layer contacts the outer end of the first spiral of the top conductor layer, while the inner end of the first spiral of the top conductor layer in its turn contacts the outer end of the second spiral of the bottom conductor layer, and so on.

Abstract: A miniaturized electric coil having a center tap which is constructed from a spiral-like bottom conductor pattern provided on a substrate, an insulating intermediate layer and a spiral-like top conductor pattern which is connected to the bottom conductor pattern via windows in the intermediate layer. A conductor path which is situated in the top conductor pattern is led out from the interior of the top conductor pattern to form the tap. At the area of said conductor path the conductors of the top conductor pattern are locally interrupted but are interconnected by means of said windows and connection conductors in the bottom conductor pattern that are connected parallel to the interruptions so as to ensure an undisturbed current flow in the top conductor pattern.