Abstract:
In a process for the fabrication of a radiation-absorbing optical element that contains a substrate (1) of plastic, a layer with a graduated refractive index (4) is fabricated on at least one surface (2) of the substrate (1) using a plasma etching process, after which a metal layer (7) is applied on top of the layer with a graduated refractive index (4).
Abstract:
An optical element or component having excellent anti-fog effects as well as excellent scratch resistance and/or reflection reducing effects and optionally also hydrophobic and/or oleophobic properties, and a method for producing such an optical element or component. The element or component includes, in the following order, a glass substrate, a water-absorbing first layer, and a second layer selected from (i) an anti-reflecting coating; a mirror coating and a hard layer; (ii) a compound and/or combination of a hard layers and anti-reflecting coatings; and (iii) a compound and/or combination of hard layers and mirror coating. Blind holes or bores are introduced into the second layer and the water-absorbing first layer with the holes opening out from the second layer and extending completely through the second layer, and at least partially through the water-absorbing first layer.
Abstract:
The invention relates to a rear surface mirror having a substrate which is transparent for the light to be reflected and having a silver layer which is applied on its rear side, a first intermediate layer being introduced as underlayer between the substrate and the silver layer at least in regions, said underlayer comprising a high-melting oxide or containing the latter and having a higher melting point than silver, and a further cover layer being applied on the side of the silver layer, which is orientated away from the substrate, at least in regions, said cover layer comprising one of the high-melting metals ruthenium, iridium, osmium, palladium, platinum, rhenium and/or rhodium or containing these.
Abstract:
The invention takes as its departure point a housing (10) for receiving electric drives (16, 18, 20), in particular garage-door drives, and/or the controls (24, 26) thereof, which housing exhibits at least two housing parts (12, 14). Provision is made on the housing parts for a latching device (34, 52, 68, 110) and guide elements (108, 112) for the reliable connection of the housing parts (12, 14) and for latching-in and retaining functional components (22, 28, 78) and/or circuit boards (24, 26) for the controls. Consequently, a structure with few individual parts and simple mounting and demounting is achieved.
Abstract:
The universally-applicable circuit arrangement of the invention makes possible an adjustment procedure for holding emitted optical power of a laser constant independent of temperature and aging. This circuit arrangement may be carried out as a three-stage cascade circuit supplied with operating voltages greater than 5 V. In accordance with the purpose of the invention, a circuit arrangement is provided which is universally applicable in a temperature range T=-40.degree. C. to 100.degree. C. for commercially available lasers and can be supplied by a standard 5 V source. In order to accomplish this as per the invention, differential amplifiers acting as current switches are arranged in a first cascade stage and the current sources feeding the differential amplifiers arranged in a second cascade stage. A data signal (D) serving to control the modulating current (I.sub.mod) is logically combined with a pilot signal (P) serving to control the pilot currents (I.sub.P1, I.sub.P2) in at least one cascade stage.
Abstract:
An optical transmitter for digitally transmitting data by using NRZ pulses. The transmitter has a laser diode whose operating current consists of a bias current and a modulation current. A photodiode measures the optical performance of the laser diode. Also provided is a regulating device having a multiplier for multiplying the alternating component of a measuring signal transmitted by the photodiode with a signal beat, the latter having the frequency of the bit rate corresponding to the NRZ pulses, with the output signal of the regulating device setting the bias current via a control member to a value which is smaller, by a predetermined amount, than the laser threshold current.
Abstract:
A method is provided for operating an engine that includes, but is not limited to checking if a clutch pedal is depressed. If this is the case, the setpoint value for the rotational speed is predetermined to a target idle speed and a target torque is predetermined. Following this it is checked if the clutch pedal is in a position in which it is no longer depressed, and if the neutral gear sensor indicates that a gear is engaged. If this is the case, the setpoint value of the rotational speed of the engine and/or the torque reserve are increased. Otherwise, the setpoint value of the rotational speed of the engine and the torque are left.
Abstract:
A method for manufacturing an optical waveguide layer includes a substrate that is prepared, onto which a first part-layer is first grown. Subsequently, a second part-layer of the waveguide layer, consisting of the same material as the first part-layer, is grown on the first part-layer. The second part-layer is bombarded with ions as it grows. The method permits manufacturing optical waveguide layers on temperature-sensitive polymer substrates.
Abstract:
The invention relates to a method and a mold for producing transparent optical elements from polymeric materials. In this case, the optical elements that can be produced in this way are intended to have at least surface regions which have reduced interfacial reflection. According to the invention, the procedure followed here is that, in the case of a reference element which consists of a polymeric material and corresponds to the respective optical element, the entire surface or a correspondingly selected surface is exposed to the influence of high-energy ions in a vacuum. In this way, an irregular nanostructure with alternately arranged elevations and depressions lying in between is formed on the corresponding surfaces. Subsequently, a thin electrically conducting layer is applied and electrochemical forming is carried out in order to obtain a mold with a negative contour which is superposed by the nanostructure. With such a mold, the optical elements can then be produced in a molding process of the nanostructure reducing the interfacial reflection.
Abstract:
A fuel injection pump for internal combustion engines, having a reciprocating pump piston that is guided in a cylinder liner, having a control slide that is axially displaceable on the pump piston, inside a lateral recess of the cylinder liner, and is moved via an adjusting shaft that is located in a transverse conduit disposed in a pump housing transversely to the cylinder axis. The transverse conduit intersects the housing bore that receives the cylinder liner in the region of a recess that form a partial suction chamber, forming a through opening for a lever of the control slide, and it also serves to drain fluid from the partial suction chamber. For hydraulic reasons, this through opening is embodied according to the invention by means of machining from the housing bore in tub-like fashion, and the control slide is also flattened, adapting to the enlargement, so that the high kinetic energy of the fuel stream emerging from the diversion bore and of the fuel flowing out to the transverse bore can be rapidly lowered.