Schott Ag

Schott Glaswerke

Bam Bundesanstalt Fuer Materialforschung Und-pruefung

Rainer Haspel

Franz Ott

Uwe Kolberg

Joseph S Hayden

Joerg Hinrich Fechner

Axel Engel

Hrabanus Hack

Ute Resch-Genger

Katrin Hoffmann

Michael Stelzl

Ralf Diezel

Doris Ehrt

The invention discloses a standard for referencing luminescence signals, having an optically transparent base material comprising a lanthanum phosphate glass, a fluorophosphate glass, a fluor-crown glass, a lanthanum glass, a glass-ceramic formed therefrom or a lithium aluminosilicate glass-ceramic, the base material including a bulk doping with at least one constituent which is luminescent and comprises at least one rare earth and/or a nonferrous metal, in particular cobalt, chromium or manganese.

Standard for referencing luminescence signals

The invention relates to a borosilicate glass having the following composition (in wt. % based on oxide content): between 55 and 80 of SiO; between 8 and 25 of BO; between 0.5 and 10 of AlO; between 1 and 16 of LiO+NaO+KO; between 0 and 6 of MgO+CaO+SrO+BaO; between 0 and 3 of ZnO; between 0 and 5 of ZrO; between 0 and 5 of BiO; and between 0 and 3 of MoO; the sum of the BiOand MoOamounting to between 0.01 and 5. The invention also relates to a fluorescent lamp, especially a miniature fluorescent lamp.

UV-blocking borosilicate glass, the use of the same, and a fluorescent lamp

A method of detecting defects present at the surface and/or internally in transparent materials, particularly of detecting included foreign bodies or bubbles in glass, is disclosed. The test material is scanned with an electromagnetic radiation of a single wavelength which is set to the penetration depth in the test material. The intensity reflected by the defects is picked up and analyzed. By this method only defects located up to a specified depth in the material are detected. Visible light as well as UV- or IR radiation may be applied. The associated test rig comprises a tunable Laser (2), a conveyor belt (6) carrying the test material (5), a fast rotating mirror-wheel (3) which directs the light beam (4) at high speed over the test material (5), and an optical sensor (7) connected with an analyzer unit (8).

Method and apparatus for detecting defects in transparent materials

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Monsheim, Germany

Rainer Haspel