Balzers Aktiengesellschaft

Unaxis-balzers Aktiengesellschaft

Balzers Aktiegesellschaft

Balzers Aktiengellschaft

Peter Wierer

Karl Hohenegger

Johannes Edlinger

Cosmas G Malin

Ilse Widmann

Manfred Kuster

Christian Beyeler

Helmut Rudigier

Reinhard Sperger

Helmut Schoech

Jurgen Buchholz

A dielectric interference filter system with at least filter elements of different spectral characteristics on the same carrier substrate is provided. The filter elements have the same height and/or adjoin each other without gaps. The system is used for, inter alia, interference color filter systems in the form of an LCD-display or CCD-arrangement. A process for manufacturing the system includes preparing at least one filter element by coating and subsequent etching, and preparing at least one subsequent filter element by coating and subsequent structuring utilizing lift-off in which the etching mask is used as the lift-off mask.

Dielectric interference filter system, LCD-display and CCD-arrangement as well as process for manufacturing a dielectric interference filter system and use of this process

An environmentally stable silver containing mirror having very high reflection values over a large spectral range comprises a silver containing layer disposed on a substrate, which is covered by a zinc sulfide layer. So that the sulfur being set free during the application or during the vaporization of the zinc sulfide to be applied, does not attack the silver, at least one barrier or intermediate layer is placed between the silver containing layer and the zinc sulfide layer.

Method of making high-reflection mirrors

High-reflection silver mirror

A color wheel includes a rotatable disc-shaped carrier to which three or more planar color filter segments are secured in radial fashion about the periphery thereof. The portions of the color filter segments extending beyond the peripheral portion of the carrier form a substantially continuous translucent color ring for being inserted into, and rotated through, a light path. Each of the color filter segments is formed of a continuous sheet of material without any apertures formed therein. The disc-shaped carrier has one or more recesses, or bonding zones, formed therein to receive innermost bonding portions of the color filter segments; these recesses provide stops for aiding in the proper radial and axial positioning of the color filter segments. The bonding portions of the color filter segments are secured to the bonding zone of the disc-shaped carrier by an adhesive. A further recess can be formed in the disc-shaped carrier adjacent each bonding zone to receive the adhesive layer.

Method of rapidly producing color changes in an optical light path

Color wheel and picture generation unit with a color wheel

An environmentally stable silver mirror having very high reflection values over a large spectral range comprises a silver layer disposed on a substrate, which is covered by a zinc sulfide layer. So that the sulphur being set free during the application or during the vaporization of the zinc sulfide to be applied, does not attack the silver, at least one barrier or intermediate layer is placed between the silver layer and the zinc sulfide layer.

In order to reduce the number of thin-films necessary to construe an interference band-pass filter for exclusive transmission of light in the UVA range the filter edge towards smaller wavelengths in the spectral characteristic is realized by the absorption edge of the material of one of the thin-films of a thin-film interference filter which filter produces the band-pass filter edge directed towards higher wavelengths.

Method for realizing a filter edge, optical thin-film and optical device

Growing community of inventors

Bludenz, Austria

Peter Wierer