Abstract: The invention relates to a method for production of a coated substrate, whereby at least one functional layer is deposited on the substrate from the vapor phase by means of chemical or physical deposition of a coating material and a temporary protective layer is applied to the functional layer by means of evaporation of a salt, in particular, an alkali metal halide. The invention further relates to a coated substrate with at least one functional layer and a temporary protective layer applied to the functional layer, which comprises a salt, in particular, an alkali metal halide, preferably a salt-like alkali metal halide and more particularly sodium chloride.

Abstract: Substrates, such as spectacle lenses for example, may be provided with a coating which is not uniform by way of screens. The screens are aperture rings, arranged concentric to a symmetry axis of the vaporising crucible in a vacuum coating unit, by way of a screen holder. The spectacle lenses are disposed on a substrate holder also in circles about the symmetry axis. The shadows cast by the aperture rings cover but a partial region of the spectacles lenses such that those regions of the lenses receive less coating than in the unshaded free regions. The aperture rings are exchangeable in order to match the coating process to the customer requirements. Furthermore, the separation of the subtrate holder from the aperture rings is adjustable.

Abstract: A device for coating both sides of a substrate with a hydrophobic layer in a vacuum coating system has a substrate holder, a first evaporator arranged one side of said substrate bolder for evaporating a substance forming the hydrophobic layer, and a second evaporator arranged on another side that is opposite from said one side.

Abstract: An apparatus for the vapor deposition of a layer, in particular of a hydrophobic and/or oleophobic top coat layer, onto front and rear sides of planar substrates. The apparatus includes at least one vacuum chamber. A substrate holder is disposed in said vacuum chamber for receiving at least one substrate. A first evaporator is disposed in said vacuum chamber opposite the front side of the substrate. At least one second evaporator is disposed in said vacuum chamber opposite the rear side of the substrate. The second evaporator has a radiation plate for directing evaporated material in direction of the substrate and a basket-like wire container disposed between said substrate holder and said radiation plate, for receiving at least one pellet with material to be evaporated in said wire container.

Abstract: Substrates, such as spectacle lenses for example, may be provided with a coating which is not uniform by way of screens. The screens are aperture rings, arranged concentric to a symmetry axis of the vaporising crucible in a vacuum coating unit, by way of a screen holder. The spectacle lenses are disposed on a substrate holder also in circles about the symmetry axis. The shadows cast by the aperture rings cover but a partial region of the spectacles lenses such that those regions of the lenses receive less coating than in the unshaded free regions. The aperture rings are exchangeable in order to match the coating process to the customer requirements. Furthermore, the separation of the subtrate holder from the aperture rings is adjustable.

Abstract: The invention relates to a plasma source whose plasma is ignited by an electric voltage. To be able to carry out the ignition at relatively low voltages, a plate (5) provided with holes (13, 14) is provided beneath a plasma volume (17), which is disposed above a wall (21) of a plasma chamber (3). Through this plate (5) an ignition volume (16) is formed beneath the plasma volume (17) with a higher pressure than in the plasma volume (17), in which the plasma ignites first. The ignition is subsequently propagated through the holes of the plate (5) into the plasma volume (17).

Abstract: The invention relates to a plasma source whose plasma is ignited by means of an electric voltage. To be able to carry out the ignition at relatively low voltages, a plate (5) provided with holes (13, 14) is provided beneath a plasma volume (17), which is disposed above a wall (21) of a plasma chamber (3). Through this plate (5) an ignition volume (16) is formed beneath the plasma volume (17) with a higher pressure than in the plasma volume (17), in which the plasma ignites first. The ignition is subsequently propagated through the holes of the plate (5) into the plasma volume (17).

Abstract: In a method for creating a corrosion-resistant coating (27) of high reflectivity on the surface of a workpiece (22), especially a glass reflector insert, in an evacuable coating chamber with a vaporizing system disposed therein, a second coating (24) of aluminum is deposited cold from a vapor onto a first, cold-applied coating (23) forming an adhesion mediator of nickel-chromium oxide, and onto that a third coating (25) of SiO.sub.2 is applied cold, and a fourth coating (26) of TiO.sub.2 or Ta.sub.2 O.sub.5 is applied at a workpiece temperature of at least 250.degree. C., and finally, as a fifth coating (27), a nickel-chromium oxide layer is deposited reactively from a vapor at a workpiece temperature of at least 250.degree. C. The deposit of the first, third, fourth and fifth coatings (23, 25, 26, 27) from a vapor is performed by means of electron beam vaporizers and the vapor depositing of the second coating (24) is performed by means of a resistance vaporizer.

Abstract: Test-glass changer for measuring layer properties optically in vacuum coating installations. A holding device (10) that accommodates several test glasses (12) is rotatably supported on a substrate holder (4), which serves to transport substrates (5) through a stream (22) of coating material. A control mechanism (16) serves to introduce in each case one test glass (12) into a path of rays (A-A) of a measuring device (7,8) and into the stream (22) of coating material. The control mechanism (16) is an incremental motor, by means of which in each case one test glass (12) can be changed over into a position, stationary relative to the substrate holder (4), in which position it can be passed alternately with the substrates (5) through the path of rays (A-A) of the measuring device (8,8) and through the stream (22) of coating material.

Abstract: A method for producing a transparent protective coating on a plastic optical substrate surface is disclosed. In particular, a substrate is positioned between two electrodes on the cathode in a reaction chamber. Once positioned, a noble gas is introduced into the chamber and the surface of the plastic optical substrate is bombarded. A monomeric organic compound of either siloxane or silazane is introduced into the reaction chamber and a bias voltage of a value in the range of 80 to 500 volts is obtained to polymerize the compound on the substrate surface. Following the beginning of this polymerization, oxygen is introduced into the reaction chamber in an amount of about 5 times the amount of the monomeric organic compound to form a mixture with the compound.

Abstract: An apparatus for regulating the evaporation rate of oxidizable substances in reactive vacuum deposition by the metered addition of oxygen to a vacuum deposition chamber during deposition, wherein the addition of oxygen to a predetermined value, the pressure "p" in the vacuum chamber is measured, and the evaporation rate "r" for any pressure changes is regulated such that the ratio of pressure to evaporation rate p:r is maintained substantially constant.

Abstract: A process for regulating the evaporation rate of oxidizable substances in reactive vacuum deposition by the metered addition of oxygen to a vacuum deposition chamber during deposition, wherein the addition of oxygen to a predetermined value, the pressure "p" in the vacuum chamber is measured, and the evaporation rate "r" for any pressure changes is regulated such that the ratio of pressure to evaporation rate p:r is maintained substantially constant.