Carl Zeiss Vision International Gmbh

Carl Zeiss Ag

Carl Zeiss Jena Gmbh

Refractory Intellectual Property Gmbh & Co. Kg

Peter Pacher

Rainer Sessner

Timo Kratzer

Peter Klopfleisch

Katharina Rifai

Matthias Burkhardt

Herbert Krug

Bernd Trummer

Christian Manhart

Matthäus Haider

Joerg Petschulat

Dieter Braunger

Jörg Petschulat

Matthaus Haider

Various embodiments provide for a gas purging plug () with a ceramic refractory body (k) with a first end (u) and a second end (o); the second end (o) is in the mounted position of the gas purging plug () in contact with a metal melt (); the first end (u) is at least partially covered with a metal cover (), the metal cover () comprises an opening () to which optionally a gas supply adapter () is connected; the gas purging plug () is designed in such a way, that a purging gas which is supplied via the gas supply pipe () to the opening () flows through the body (k) and exits the body (k) at the second end (o); and wherein at least one electronic sensor () is in contact with the gas purging plug (), to detect a mechanical vibration ().

Gas purging plug, gas purging system, method for characterization of a gas purging plug and method for purging a metal melt

The invention is directed to an apparatus for demonstrating the visual impression for a wearer of spectacles having polarizing spectacle lenses. The apparatus includes a memory for providing a first image having a motif and a first polarization direction corresponding thereto and a second image having the same motif and a second polarization direction corresponding thereto, which is different from the first polarization direction. The apparatus also includes a display device for displaying the first image with light polarized in the first polarization direction and the second image with light polarized in the second polarization direction in a superposed representation, such that the motif of the first image and the motif of the second image coincide dimensionally identically. The invention is also directed to a method for demonstrating the visual impression for a wearer of spectacles having polarizing spectacle lenses.

Apparatus and method for demonstrating the visual impression for a wearer of spectacles having polarizing spectacle lenses

A system for stereoscopic visualization of image information includes a display device defining a display area for displaying a left and a right partial image. The display device displays the left partial image to a left eye of an observer focused on the display area in a first viewing direction using a left observation beam path and the right partial image to the right eye in a second viewing direction using a right observation beam path. The system includes a vision assist through which the left and right observation beam paths pass. The vision assist sets a beam course for the left and right viewing observation beam paths wherein, starting from the left and right eyes in a direction toward the display area, a perpendicular distance between the left and right observation beam paths decreases to a minimum at a finite distance from the display surface.

Visualization system for three-dimensional images

The invention is directed to a spectacle lens and includes a body which is transparent or at least partly transparent to light and has a phase object which guides the light incident at an angle of incidence &#x3b1; on a side facing away from an observer into a direction depending on the wavelength &#x3bb; of the light and the angle of incidence &#x3b1; thereof. The phase object has a multiplicity of diffraction structures, which diffract monochromatic light at a wavelength of 380 nm&#x2264;&#x3bb;&#x2264;800 nm with a diffraction efficiency of &#x3b7;&#x2265;70% into one and same order of diffraction |m|&#x2265;1 when the monochromatic light is incident at an angle of incidence &#x3b1; on the side of the lens facing away from the observer which lies within a diffraction-structure-specific angle interval 15&#xb0; wide and dependent on the wavelength of the light.

Spectacle lens having a plurality of diffraction structures for light

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Leoben, Austria

Peter Pacher