Abstract: A device for feeding materials to an evaporator of a vapor deposition apparatus comprises a balance onto which material to be evaporated is fed and an ejector associated with the balance and responsive to a predetermined weight of the substance on the balance to eject the substance from the balance through a trajectory path and into the evaporator.

Abstract: A method for producing carbon coatings by sputtering comprises placing the target material to be sputtered which is made of a fibrous carbon material such as paper, velvet, wood, etc. which has been charred on the cathode. The apparatus comprises an electrode forming an anode which is arranged in spaced relationship to a cathode.

Abstract: A vacuum metering valve comprises a housing having an inlet and a discharge space from the inlet with a flow passage between the inlet and outlet having a valve seat with a valve member which is mounted in the housing for movement toward and away from the seat. The construction includes mechanical means for adjusting the position of the valve member in relation to the seat and in addition temperature control means are provided for varying the position in reference to the seat in accordance with temperature variations. Temperature variations are produced by suitable means for heating and cooling an auxiliary member which is disposed for example between a mechanical adjustment device and the valve member.

Abstract: A method for determining the quantity ratio of two components of a multi-substance mixture whose absorption bands are adjacent to each other and overlap comprises using an interference filter which is rotated in a uniform rotation about a first axis through the filter plane which forms with a perpendicular erected on the filter plane a fixed angle .beta. which is not equal to zero. The filter is rotatably arranged about a second axis through the filter plane and the method is characterized by adjusting the angle .alpha. which the axis of rotation forms with the ray in the range of .beta. is less than .alpha. so that a signal corresponding to the first derivative of the spectral intensity distribution of the radiation transmitted by the substance mixture just passes through zero and a quantity correlated with this angle is used as a measure of the quantity ratio.

Abstract: A pump for the treatment of gases with a sorbent material in an evacuated chamber comprises a housing which has a plurality of stacked plates which define a continuous upwardly extending path for the sorbent material which is made up of successive spirals. At least some of the spirals are spaced vertically apart to define a sorption zone permitting the passage of gases to be treated over the sorbent material. In addition the stacked plates also define a closed path in the housing leading from the sorption zone and out of the housing for discharing desorbed gases. The housing is vibrated by a vibration drive applied to effect upward movement of the sorbent material and a downcomer pipe or return pipe extends through the plates for returning the sorbent material from the upper portion of the path back to the location of the bottom of the sorbent material path. The sorbent material is continuously moved upwardly through the housing on the plates by vibrating the housing to effect such movement.

Abstract: A light transmitting, absorbing coating is produced on a substrate by depositing layers of silicon in an oxidizing residual gas atmosphere and chrome in a non-oxidizing residual gas atmosphere in alternate layers cathode sputtering. The light transmitting layer comprises a substrate having a coating of a bluish-grey transmission color which comprises a plurality of alternate chrome and silicon dioxide layers with the thickness of the individual chrome layers being smaller than 10 nm.

Abstract: The self-calibrating leak detector circuit arrangement comprises a measuring probe for generating an electrical signal when exposed to the leaking gas. A measuring amplifier is connected to the probe for amplifying the electrical signal and a second integrating amplifier stage is connected to the measuring amplifier output for amplifying the signal. The second amplifier stage has a feedback connection to the input of the measuring amplifier for counteracting at least a part of the electrical signal from the probe. A push button switch is advantageously connected between the measuring amplifier and the second amplifier stage to momentarily impress the output of the measuring amplifier on the input of the second integrating amplifier stage. Indicators are connected to the outputs of the respective amplifiers for a reading of their respective outputs.

Abstract: An apparatus for determining the rate of flow of particles in a vacuum deposition device using the relationship that the rate of flow of the particles is equal to the density of the particle current times the mean velocity of the particles comprises establishing a flow or current of particles in the device and the directing of a laser beam through the current of particles in order to measure the attenuation of the beam after it has passed through the particles and thus to determine the vapor density within the current. The absorption wavelength shift of the laser beam provides an indication of the velocity component of the current because the shift is produced by a Doppler effect by the velocity component of the particle current in the direction of flow from the source of the particles to the substrate to be coated.

Abstract: A reflection reducing system on a highly refractive infrared transmitting substrate, comprises a germanium layer immediately adjacent the substrate, an adjoining layer of zinc selenide, and at least one layer of Al.sub.2 O.sub.3 terminating the layer system to the outside.

Abstract: The arrangement is for the mass-spectrometric detection of ions in the presence of a disturbing background, and is of the type including a source of ions, a mass-spectrometric separating system, a detector for the presence of ions, and a focusing device for the ions interposed between the source and the detector. The focusing device comprises an asymmetric electrostatic focusing lens arrangement having semi-cylindrical electrodes defining a lens axis, an ion entrance aperture, and an ion exit aperture. In three embodiments of the electrostatic focusing lens, the ion entrance aperture is eccentric to the axis of the lens. In a fourth embodiment, the ion entrance and exit apertures are coaxial with the lens axis and a pair of intermediate electrodes define an ion aperture which is eccentric relative to the axis of the lens.

Abstract: A vacuum apparatus for treating articles, particularly a vacuum evaporator, for applying coatings of material onto articles, such as lenses, comprises a housing which defines an interior treatment chamber. The chamber includes a support means for supporting a substance to be evaporated which includes means for electrically heating the substance located at a bottom wall and which includes an opposite top wall which carries a support for the article to be coated or treated. A foil material capable of being electrically heated is supported in the housing in spaced location from the side and the top walls at least and it is held in position by clamping elements which provide means for connecting the foil to an electrical supply source for supplying a heating current.