F.o.b. Gmbh Gesellschaft Zur Fertigung Farbiger Optoelektronischer Bauelemente

Andreas Berger

Wolf-Gernot Drost

Klaus Berndt

The invention relates to a method for producing UV polarizers, according to which spheroid particles situated near the surface of the glass are incorporated into the support material (primarily standard float glass) in a novel arrangement. According to the method for producing UV polarizers, after the introduction of metal ions (e.g., silver ions) into the glass surface, a large size distribution of particles is achieved by multiple alternation of a heat treatment for separating out spherical metal particles, followed by the renewed introduction of metal ions and a subsequent heat treatment. A deformation of the glass produces spheroid particles of various sizes and different semi-axis relationships. The particles are characterized by their large size distribution and are deformed differently in relation to their spheroid shape. In this way UV polarizers are produced which have a wide absorption range since the absorption bands having different maximum positions overlap.

Method for producing UV polarizers

The invention generally relates to an optical switch which in particular, is able to present a high-resolution color display. The aim of the invention is to produce an optical switch which has a simpler design than known constructive solutions and has a high degree of luminous efficiency and low parallax. The optical switch should also be guaranteed to function at approx. 550&deg; C. The inventive e.g., LCD-type optical switch is characterized in that at least one of the support plates consists of color-structured dichroic polarization glass which is impressed with dichroic color filters, in that the dichroic color filters are situated within an orthogonal matrix in color filter layers and in that the color filter layers of the support plate, starting form the surface of the support plate, extend into the same to a depth of a few &mgr;m. Once the glass support plates have been structured, the color patterns remain stable to approx. 550&deg; C. As a result of using the color-structured dichroic polarization filter, the invention requires at least one less polarization filter than conventional LCD's and therefore has a simpler construction.

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Halle, Germany

Andreas Berger