Carl Zeiss Jena Gmbh

Dietrich Schmidt

Christfried Symanowski

Gudrun Schroeter

Eberhard Piehler

Gertrud Blei

Juergen Pudenz

Rainer Schnell

Hans-Juergen Meissner

Gerd Rieche

Hans-Joachim Stoehr

The invention is directed to an arrangement for the polarization of light, preferably for use in projectors. It comprises at least one illumination source, an integrator with a structural component part which is arranged in the light entrance plane, has the entrance opening, and is constructed so as to be reflecting in the direction of the interior of the integrator, as well as components for the polarization and reflection of partial beams of the light bundle entering the integrator. According to the invention, at least two reflecting polarizers are arranged in the light exit plane of the integrator in the same angular position relative to the axis of the integrator. The polarizers have polarization directions that are rotated relative to one another. Phase plates which adapt the polarizers with non-transmitted polarization directions to the polarizers with transmitted polarization directions are provided outside of the integrator.

Arrangement for polarization of light

An arrangement for projecting a multi-color image, including at least two image-generating elements which enable generation of one partial color image each of the multi-color image, and a color combiner which superimposes the light partial beam paths and emits it as a common beam. The arrangement further includes projection optics. The image scales being different for the partial color images, one optical device each is arranged in one or more of the partial beam paths of the partial color images whose image scales differ and each optical device is configured such that, due to the change in the image scale of the corresponding partial color image effected by it, the image scale of the partial color image corresponds to a predetermined, common image scale.

Arrangement for the projection of a multi- coloured image into a projection surface

In a device for generating a quadrangular illuminating field, having a light mixing rod, which has a quadrangular cross-section as well as a quadrangular inlet area and a quadrangular outlet area and guides light coupled in via the inlet area to the outlet area, in order to generate therein the quadrangular illuminating field, the outlet area is limited by four rectilinear sides, of which two each meet in one of the corners of the outlet area at an angle which is not equal to 90&deg;.

Device for generating a quadrangular illuminating field and use of such device in an optical device comprising a surface to be illuminated having a predetermined shape

In a light mixing rod comprising an inlet area and an outlet area, which guides light coupled in via the inlet area along a light guiding direction to the outlet area, two mixing rod portions are provided, which are successively arranged in the light guiding direction and optically coupled with each other, a first of which is in the form of a hollow portion into which the second mixing rod portion extends at least partially.

Light mixing rod comprising an inlet area and an outlet area and use of such a light mixing rod in an optical device comprising a surface to be illuminated

In a device for generating a quadrangular illuminating field, having a light mixing rod, which has a quadrangular cross-section as well as a quadrangular inlet area and a quadrangular outlet area and guides light coupled in via the inlet area to the outlet area, in order to generate therein the quadrangular illuminating field, the outlet area is limited by four rectilinear sides, of which two each meet in one of the corners of the outlet area, and, in one or two corners, the sides meeting therein converge at right angles while, in the other corners, the sides meeting therein converge at an angle, which is not equal to 90&deg;.

In a projection device with a matrix ( ) located in an image plane for generating a video image, with optics ( ) for projection of this video image on a screen and with a light source ( ) for illuminating the matrix ( ), there is an arrangement by which the video image can be uniformly illuminated.

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Jena, Germany

Dietrich Schmidt