Carl-zeiss-smt Ag

Carl Zeiss Laser Optics Gmbh

Carl Zeiss Meditec Ag

Carl-zeiss-stiftung

Ralf Kuschnereit

Bernd Kleemann

Hans-Jochen Paul

Jeffrey Erxmeyer

Stefan Weissenrieder

Christoph Hauger

Martin Hacker

Michael Gerhard

Werner Nahm

Peter Vogt

Harry Bauer

Thure Boehm

J&uuml;rgen Hartmaier

Jens Spanuth

Jens Ullmann

Peter Andrews

Gabor Scharioth

Bernhard Wergl

Dietrich Klaassen

Systems and methods are described for imaging an eye portion or for treating glaucoma in an eye of a patient. In a first step an optical microscopic image of a portion of the eye is acquired. In the optical microscopic image a distinguishable anatomical structure is identified to predict a location of a volume portion to be imaged three-dimensionally. Three-dimensional imaging of the located volume portion is performed by acquiring an optical coherence tomography image of the located volume portion. The volume portion is treated by either directing a laser beam to the volume portion or inserting an implant based on the OCT-image.

Systems and methods for treating glaucoma and systems and methods for imaging a portion of an eye

An optical grating has a multiplicity of parallel diffraction structures, which are arranged on a support defining a base face. Each structure has a blaze flank that is inclined substantially at the Littrow angle with respect to the base face, and a back flank. Both flanks together form a reflection layer which comprises a reflective base layer and a transparent protective layer that is connected to the base layer and covers it. The protective layer on the blaze flank and the protective layer on the back flank are made of the same material. The thicknesses of the protective layers on the blaze flank and on the back flank, however, are different.

Optical grating and method for the manufacture of such an optical grating

Optical arrangement, optical grating and method for the manufacture of such an optical grating

Antireflection multilayer coatings with only three or four layers are proposed for the production of laser resistant optical components with minimal residual reflection and high transparency for UV light in a wavelength range approx. 150 nm to approx. 250 nm at large angles of incidence in the range of approx. 70&#xb0; to approx. 80&#xb0;, particularly in the range between approx. 72&#xb0; and approx. 76&#xb0;. For incident p-polarized UV light three-layer systems can be used, in which a layer of low refractive material, in particular magnesium fluoride is arranged between two layers of high refractive material and, in the case of the specified wavelength, of minimally absorbent material, in particular of hafnium oxide or aluminum oxide. For example, this allows a residual reflection of perceptibly less than 1% to be achieved in the case of a wavelength of 248 nm at angles of incidence in the range between approx. 72&#xb0; and approx. 76&#xb0;.

Antireflection coating for ultraviolet light at large angles of incidence

Antireflection multilayer coatings with only three or four layers are proposed for the production of laser resistant optical components with minimal residual reflection and high transparency for UV light in a wavelength range approx. 150 nm to approx. 250 nm at large angles of incidence in the range of approx. 70&deg; to approx. 80&deg;, particularly in the range between approx. 72&deg; and approx. 76&deg;. For incident p-polarized UV light three-layer systems can be used, in which a layer of low refractive material, in particular magnesium fluoride is arranged between two layers of high refractive material and, in the case of the specified wavelength, of minimally absorbent material, in particular of hafnium oxide or aluminum oxide. For example, this allows a residual reflection of perceptibly less than 1% to be achieved in the case of a wavelength of 248 nm at angles of incidence in the range between approx. 72&deg; and approx. 76&deg;.

A device is used to hold an optical element, in particular one made of a crystalline material, in particular of CaF , while the optical element is being coated, in particular by the vapor-deposition of at least one functional layer in a vacuum coating plant. The latter has a device for mounting the optical element, it being possible for the optical element to be heated in the vacuum coating plant via suitable radiation, in particular infrared radiation. An intermediate element which has a lower thermal absorption than the device for mounting the optical element is arranged between the device for mounting the optical element and the optical element.

Holding device for an optical element made of a crystalline material

In a method for heating workpieces, in particular optical elements such as lenses, in particular lenses made from calcium fluoride material, which are optically transparent over a large IR wavelength region of up to approximately 9 &mgr;m, the heating by thermal radiation takes place in the transition region of the optical element between optical transparency and an optically absorbing region in a wavelength region from 9 to 12 &mgr;m.

Method for heating a workpiece

Growing community of inventors

Oberkochen, Germany

Ralf Kuschnereit