Front attachment for CRT. E.G. for a monitor or video tube
AssigneeFlachglass Aktiengesellschaft
InventorsDieter Muller, Wilhelm Rein
Life of this patent
Estimating the term…
Abstract
Front attachment unit for the cathode ray tube of monitors, television sets or the like, consisting of a sheet of glass, in particular a sheet of gray glass, anti-reflection equipment on the front side and an absorption coating on the rear side, whereby the absorption coating has metallic atoms. The absorption coating is single-layer and made of chromium, a chromium/nickel alloy or silicides. It is anti-statically adjusted and grounded. It is of a thickness which reduces the light transmission compared with a non-coated sheet of glass by approximately a third.
Claims10
A front attachment for a cathode ray tube, comprising:
- a single inorganic glass sheet integrally having a rear side adapted to be applied ahead of the face of a cathode ray tube and turned toward the cathode ray tube, and a front side facing away from the cathode ray tube;
- an anti-reflection finish on said front side;
- an electrically conductive anti-static light absorbent coating on said rear side in the form of a single layer selected from the group which consists of chromium, a chromium/nickel alloy and a metal silicide of a thickness applied by magnetron cathodic vapor deposition which reduces the light transmissivity by approximately one quarter to four fifths of the transmissivity of a sheet of the glass not provided with said coating;
- and
- means for grounding said light absorbent coating.
Dependencies are inferred from the claim text.