Schott Ag

Lucent Technologies Inc.

Schott Glas

Steffen Reichel

Ulrich Peuchert

Frank-Thomas Lentes

Yoshio Okano

Jochen Alkemper

Yvonne Menke

Martin Letz

Jose Zimmer

Michael Weisser

Ralf Biertuempfel

Simone Monika Ritter

Joseph S Hayden

Wolfram Beier

Christian Schenk

Kevin Tabor

Carsten Weinhold

Burkhard Danielzik

Dieter Werner

Matthias Brinkmann

Petra Auchter-Krummel

José Zimmer

Bernd Teichmann

Joe Hayden

Bianca Buchold

Helge Vogt

Noboru Kobayashi

Michael Landi

Christopher Klein

Rainer Jaschek

Michael Waschulewski

Stephan Kuepper-Brennberger

A lighting device is provided that includes an LED and an NIR filter for a control panel or a display, which does not interfere with a night vision device. The light of the LED is in an area of u'&#x3e;0.19 and v&#x2032;&#x3e;0.46 of the u&#x2032;v&#x2032; diagram of the CIE-LUV chromaticity diagram. The NIR filter exhibits descending light transmittance between 500 nm and 800 nm. The thickness of the NIR filter is chosen so that a sufficient blocking effect is provided in a range of wavelengths between 600 nm and 800 nm, so that the color coordinates of the filtered useful light are in an area with a radius of 0.04 around coordinates u&#x2032;=0.19 and v&#x2032;=0.49 of the u&#x2032;v&#x2032; diagram.

LED lighting device compatible with night vision devices

The invention relates to a LED light source comprising a preferably aspheric glass lens having an aspect ratio of more than 0.1.

LED light source with collimation optics

The method for producing at least one rotationally symmetrical lens consisting of an opto-ceramic includes the step of moulding a ceramic green body for the lens, wherein the mould has a shaping surface, which is described by the following equation B: ygives a position on an optical axis; x designates a perpendicular distance from the optical axis to the surface; k, c, and a, a, a, a, . . . are constants describing a surface of the lens to be moulded and z=|x|+b, wherein b is a constant with a value greater than 0 and less than 0.3 mm, which is a measure of a deviation of the shaping surface from the surface of the lens.

Method for producing a rotationally symmetric lens from a ceramic green body and moulding tool for performing the method

The invention relates to an optical hybrid lens. According to the invention, the lens consists of a substrate () that consists of a ceramic having a predetermined shape and at least another material (), which covers a surface of the substrate () at least in certain sections in order to form a lens surface. Use of an optical ceramic as a material enables an additional degree of freedom for adjusting the imaging properties of the hybrid lens. The optical ceramic may have a high refractive index and a low dispersion. The other material can be a material that can be deformed or recast at temperatures that are low in comparison to those of the optical ceramic. In particular the other material can be a low-TG glass or a polymer. The other material is directly applied onto the substrate without a further surface finishing being necessarily required. Other aspects of the invention relate to an optical lens group, an optical image acquisition device, and a process for manufacturing a hybrid lens.

Process for the production of an optical lens

The moulding tool is a near-net-shape negative mould for shaping a ceramic green body for the lens. The mould has a shaping surface, which is described by the following equation B: y1 gives a position on an optical axis; x designates a perpendicular distance from the optical axis to the surface; k, c, and a, a, a, a, . . . are constants describing a surface of the lens to be moulded and z=|x|+b, wherein b is a constant with a value greater than 0 and less than 0.3 mm, which is a measure of a deviation of the shaping surface from the surface of the lens.

Moulding tool for moulding a ceramic green body and use of said moulding tool

The present invention relates to the use of lead-free and phosphate-containing glasses, preferably colored and filter glasses which absorb light in the infrared region (IR-region), in a precision molding process. Preferably, the content of fluorine in the glass is low. Advantageously, so optical constituents can be produced without finishing, such as for example lenses for digital cameras. By the use according to the present invention, also other optical constituents can be produced which can be directly used for a corresponding technical purpose. For an advantageous use, the optical constituents produced by precision molding can be used in the fields imaging, projection, telecommunications, optical communications engineering and laser technology.

Use of lead-free and phosphate-containing glasses in a precision moulding process

The refractive, transmissive or diffractive optical elements are made from a ceramic containing one or more oxides of the type XO, which is transmissive for visible light and/or for infrared radiation and which has a cubic crystal structure analogous to that of YO. In preferred embodiments X is Y, Sc, In, or a lanthanide element, namely La to Lu, and in particular is Lu, Yb, Gd, or La. Also mixtures of oxides of the type XOwith oxides having different stoichiometries, such as HfOand/or ZrO, may be present, as long as the cubic structure of the ceramic is maintained.

Optical elements made from ceramics comprising one or more oxides of Y, Sc, in and/or lanthanide elements and mapping optics including the optical elements

The invention relates to a display device having a fiber-optic plate and a display with an image plane on which the image information of the display is generated, the fiber-optic plate comprising a fiber bundle with a multiplicity of fiber cores extending beside one another, which are enclosed by a cladding material and which transmit light from an entry face of the fiber-optic plate, facing the display, to an exit face of the fiber-optic plate, wherein the entry face of the fiber-optic plate lies further away from the image plane than the lateral dimension of the smallest image information representable by the display.

Display device with fiber-optic arrangement

Raman amplification is used in optical transmission systems, devices and/or components way of for applying Raman amplification avoiding or suppressing detrimental and hence undesirable non-linear effects is provided. Raman amplification in an optical device is provided by firstly determining a pump power () necessary for providing Raman amplification and then by providing a low spectral power density by pumping the optical device with pump power () at a relatively broad pump power spectrum and preferably a low spectral pump power amplitude such that the total output pump power () remains sufficiently high. The pump power () is optically attenuated prior to being coupled to the optical device.

Method and contrivance for applying a Raman amplification in a transmission and/or fibre device

The optical elements are made from an opto-ceramic material that is characterized by high density, transparency for visible light and IR, high refractive index, high Abbe number and outstanding relative partial dispersion. Mixed oxides are sintered to obtain the opto-ceramic material. The mixed oxides contain zirconium oxide and hafnium oxide mixed with one or more oxides of yttrium, scandium, lanthanide elements, and optionally mixed with one or more of SiO, NaO, and TiO. Alternatively the mixed oxides contain zirconium oxide and hafnium oxide mixed with CaO and/or MgO and optionally mixed with one or more of SiO, NaO, and TiO. In addition, the mixed oxides can also include one or more oxides of Al, Ga, In, and Sc; optionally one or more oxides of yttrium, some lanthanide elements; and optionally one or more of SiO, NaO, MgO, CaO, and TiO.

Optical elements and imaging optics comprising them

The invention relates to an optical lowpass filter that has a plurality of light guiding optical fibers, and to a method for producing such an optical lowpass filter.

Optical lowpass filter and method for producing an optical lowpass filter

In order to produce an improved coupling between waveguides of different refractive indexes, provision is made of a connecting device for connecting at least two optical waveguides ( ), in the case of which a first optical waveguide ( ) is held relative to a second optical waveguide ( ), an end face ( ) of the first waveguide ( ) running obliquely to the optical axis ( ) of the first waveguide ( ), and an end face ( ) of the second waveguide ( ) running obliquely to the optical axis of the second waveguide ( ). In this case, the refractive index of at least one light-guiding region of the first optical waveguide ( ) differs from the refractive index of a light-guiding region of the second optical waveguide ( ), and the optical axes of the first and the second optical waveguides ( ) are arranged substantially parallel to one another.

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Mehlingen, Germany

Steffen Reichel