Ldt-gmbh & Co. Laser-display-technologie Kg

Other

Jenoptik Ldt Gmbh

Carl Zeiss Jena Gmbh

Ltd Gmbh & Co. Laser-display-technologie Kg

Schneider Rundfunkwerke Aktiengesellschaft

Schneider Elektronik Rundfunkwerke Gmbh

Ldt Gmbh Co. Laser-dispaly-technologie Kg

Ldt Gmbh Laser-display-technologie Kg

Ldt Gmbh & Co. Laser-display-technology Kg

Ldt Gmbh & Co. Laser-display-technologies Kg

Christhard Deter

Klaus Hiller

Wolfgang Vogel

Frank Werfel

Juergen Kraenert

Rolf Roeder

Dieter Hubrich

Jorg Wunderlich

Gunther Elster

Richard Wallenstein

Frank Goepfert

Dirk Loeffer

Olaf Kotowski

Rolf Ruder

Gerhard Hofmann

Martin Enenkel

Holger Frost

Wolfram Biehlig

Joerg Wunderlich

Dirk Loeffler

Wolfgang Holota

The invention relates to an arrangement for projecting an image, which is made of pixels, onto a projection surface, including at least one light source whose intensity can be altered and which emits a light beam, also including a deflection device which deflects the light beam onto the projection surface, and a two-stage transformation lens system which is arranged between the deflection device and the projection surface. The invention also relates to optical systems for adjusting the angle of an incident light beam by means of a two-stage transformation lens. The invention includes a transformation lens system is made up of two partial systems having positive refractive power such that when seen in the direction of the propagation of the light, the entrance pupil is arranged in front of the first lens apex of the transformation lens system and the exit pupil of the transformation lens system is arranged between the lens apex of the last lens and the projection surface, and a diaphragm is arranged inside the exit pupil.

Arrangement for projecting an image onto a projection surface and associated transformation lens system

In a magnetic bearing in which a first part ( ) is mounted magnetically relative to a second part ( ) and the second part ( ) has a Type II superconducting material ( ) containing an anisotropic crystal or a plurality of grains formed of this anisotropic crystal, this crystal being anisotropic in that the superconducting current flows in current-carrying planes, the first part ( ) has a configuration of magnets ( ) with which the superconducting material ( ) interacts, and the crystal itself or the crystal in the plurality of grains faces the first part ( ) with the normals on the current-carrying planes (a-b).

Magnetic bearing and use thereof

An arrangement for displaying video images on a projection surface, in which the display is carried out on the projection surface at an inclination, comprises a source for the emission of a substantially parallel light bundle for a sequential illumination of image points of the video image, which source can be intensity-modulated, a deflection device for scanning the light bundle in two dimensions, and a control device which controls the intensity modulation for the light bundle as well as the deflection of the light bundle in accordance with a function that is obtained through a calculated distortion correction of the image, at least with respect to the inclination. A method for the compensation of geometric image errors in video images is also disclosed.

Method for the compensating of geometric images and an arrangement for carrying out the method

Image representation system

In a magnetic bearing in which a first part is mounted magnetically relative to a second part and the second part has a Type II superconducting material containing an anisotropic crystal or a plurality of grains formed of this anisotropic crystal, this crystal being anisotropic in that the superconducting current flows in current-carrying planes, the first part has a configuration of magnets with which the superconducting material interacts, and the crystal itself or the crystal in the plurality of grains faces the first part with the normals on the current-carrying planes.

Magnetic bearing and its use

A video projection system for projecting more than one picture in which a light source for generating at least one light bundle, an intensity modulator and a spatial light bundle modulator, wherein they are controlled by a video signal, and at least one projection surface for displaying a determined quantity or quantities of individual pictures are arranged in the direction of light of a beam path. The video projection system contains a quantity or quantities of projectors which correspond(s) to the quantity or quantities of individual pictures, each projector having a spatial light bundle modulator, wherein they are optically connected with the light source. The light bundle is divided into a quantity or quantities of partial light bundles which correspond(s) to the quantity of projectors are arranged following the one light source, considered in the direction of the beam path, each of which partial light bundles has a partial beam path, followed in each partial beam path by an intensity modulator. The intensity modulator and the spatial light bundle modulator, are arranged in one of the partial beam paths, and are controlled by the signals of a video source.

Video projection system for projecting more than one picture

In a device for the deflection of a light bundle generated by a light source, wherein this device has a nonmechanical deflection device in which the light bundle enters and exits at a different angle determined by a controlling variable, which angle depends on the wavelength of every light component in the light bundle, it is provided that an optically dispersively active system is provided behind the nonmechanical deflection device in the light propagation direction, wherein the angular dispersion of this system is dependent on the angle of the light bundle entering the system, wherein the angular dispersion compensates for the wavelength dependence of the angle of the nonmechanical deflection device determined by the controlling variable.

Device for deflection, use thereof, and a video system

In a video projection device for showing a video picture composed of picture points of defined magnitude on a screen with at least one light source for emitting a light bundle with a predetermined beam profile for illuminating every picture point on the screen during a predetermined time interval, it is provided that the beam profile of the light bundle is expanded wider than the defined magnitude of the respective picture point to be illuminated and the time interval is so short that the magnitude of the picture point recognized in the eye of an observer watching the video picture is perceptible in conformity with the defined size of the picture point. A method, in which a video picture on a screen is formed of picture points in that a light bundle with a predetermined beam profile is directed onto the screen for the illumination, in each instance, of a picture point of defined size for a predetermined time interval, is characterized in that a light bundle with a beam profile which is expanded further than those by means of the defined size of the picture point to be illuminated is used in the method, and every picture point is illuminated within a time interval which is short enough that the magnitude of the picture point recognized in the eye of an observer watching the video picture is perceived in conformity with the defined size of this picture point.

Video projection apparatus and method of displaying a video image composed of pixels of a defined size

In an apparatus for generating an image on a screen by illuminating image points in a plurality of partial images by light bundles, wherein the apparatus has at least one deflection device for deflecting a plurality of light bundles in respectively associated image points of the individual partial images, and a control device for controlling the intensity of the light bundles depending on the brightness of the respective image point to be illuminated, and optics between the screen and deflection device for deflecting the light bundles in a partial image associated with the respective light bundle, it is provided that the optics include an entrance pupil which is spread out over an extended area and an exit pupil which is much smaller in comparison to the entrance pupil, and in that a plurality of deflection devices for deflecting a light bundle associated with a partial image are provided in or near the entrance pupil which is spread out over an extended area.

Device for the production of an image on a screen by illuminating picture elements in a plurality of partial images

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Gera, Germany

Christhard Deter