Abstract: A code reader comprising an integrated light source for the illumination of a reading region, a sensor matrix and an optical receiving system positioned in front of the latter, wherein the light emergence surface of the light source is located in or closely in front of the depth of field zone of the optical receiving system.

Abstract: A scanner, especially one for the detection of one- and/or two-dimensional codes with a reception optics, projects the image of a reading line onto a linear arrangement of photoreceivers. An illumination arrangement for linearly illuminating an entire reading line has several substantially point-like light sources arranged adjacent to each other in a line. To boost the efficiency of the illumination arrangement, it has at least one anamorphotic illumination optics which forms the light emitted by the light sources into an illumination line.

Abstract: The invention relates to an apparatus for the determination of the focal distance of an optical imaging system comprising a first partly reflecting element and a second partly reflecting element which are arranged in the beam path at an angle to the optical axis such that a first portion of the light is reflected at the first element into a first light field, a second portion of the light is reflected at the second element into a second light field and a third portion of the light passes through both elements to form a third light field, and an optical detection device to register at least a part of an interference pattern in the overlap region of the first and second light fields. The invention furthermore relates to an optical imaging system comprising an apparatus in accordance with the invention for the determination of the focal distance and a laser scanner having an optical imaging system in accordance with the invention.

Abstract: A code reader comprising an integrated light source for the illumination of a reading region, a sensor matrix and an optical receiving system positioned in front of the latter, wherein the light emergence surface of the light source is located in or closely in front of the depth of field zone of the optical receiving system.

Abstract: A scanner, especially one for the detection of one- and/or two-dimensional codes with a reception optics, projects the image of a reading line onto a linear arrangement of photoreceivers. An illumination arrangement for linearly illuminating an entire reading line has several substantially point-like light sources arranged adjacent to each other in a line. To boost the efficiency of the illumination arrangement, it has at least one anamorphotic illumination optics which forms the light emitted by the light sources into an illumination line.

Abstract: A scanner for the detection of one-dimensional and/or two-dimensional codes has a light receiver arranged in a housing and an optical receiving system associated therewith and also accommodated in the housing. At least one light source is additionally provided in the housing to illuminate the region to be scanned arranged in a scanning plane. At least one of the light source and the optical receiving system is movable in order to allow a reading distance between the housing and the object plane to be varied.

Abstract: An optoelectronic sensor has a light source (10) for the transmission of a scanning beam (11), a light deflection unit (12), which is formed for the periodic deflection of the scanning beam (11) within an angular transmitting range (14), a receiving device for detection light reflected from an object to be sensed and/or back-scattered light, and a deflector (18) which has a light entry surface (20) arranged at least regionally within the angular transmission range (14). The light deflector is formed for the deflection of light incident through the light entry surface (20) onto a photo-detector (22). The photo-detector (22) can be coupled to a synchronization circuit to produce a synchronization pulse for the determination of the start of a sensing period.

Abstract: The invention relates to a bar code reading apparatus of the sensing for a bar code along a scanning direction, comprising a light source to produce a transmitted light beam and a diaphragm to restrict the cross-section of the transmitted light beam, wherein the diaphragm has a diaphragm aperture, the boundary of which has four adjoining sections, of which two sections lie opposite to one another and extend substantially transverse to the scanning direction (transverse sections), and of which two sections lie opposite to one another and extend substantially along the scanning direction (longitudinal sections).

Abstract: The invention relates to a scanner, in particular for the detection of one-dimensional and/or two-dimensional codes, having a light receiver arranged in a housing and an optical receiving system associated therewith and also accommodated in the housing, wherein at least one light source is additionally provided in the housing to illuminate the region to be scanned arranged in a scanning plane.

Abstract: The invention relates to an optoelectronic sensor, in particular a bar code reader, with an optical receiving system positioned in front of a light receiver for the deflection of a light beam reflected from an object, in particular a bar code, onto the light receiver. Through the provision of aperture diaphragms, or a plurality of light receivers, or regions with different image forming characteristics in the optical receiving system, a situation is achieved in which the receiving characteristics of the overall system, which result by reason of the shape of the sensing laser beam, as a result of the characteristics of the electronic evaluation system and as a result of different light intensities of the light returned, for example from a bar code, are optimized for different sensing distances.

Abstract: A miniature air bearing for supporting and guiding parts has a bearing surface of monocrystalline silicon. Nozzles are formed on the bearing surface by means of anisotropic etching for feeding air.