Abstract:
The lamp has at least one capacitive input coupling structure (2) consisting of a dielectric with dielectric saturation polarization and an effective surface area, whereby the product of the effective area and the saturation polarization is 10 5 C. The product of the coercive field strength and effective thickness of the dielectric that forms the capacitive input structure less than 200 V.
Abstract:
The present invention relates to a lamp unit (501) for an adaptive front lighting system (AFS) (500) for a vehicle (100). The lamp unit (501) comprises a liquid crystal element (200/200') arranged to receive light emitted by a light source (502), which liquid crystal element (200/200') has a first state in which it is adapted to transmit incoming light without substantially refracting said incoming light, and a second state in which it is adapted to refract said incoming light when the light passes through said liquid crystal element. This allows light to be altered without any mechanical movements in or of the lamp unit (501). The present invention also relates to an AFS (500) comprising such a lamp unit (501), and a vehicle (100) comprising such an AFS (500).
Abstract:
In a capacitively coupled discharge lamp the electrode comprises a dielectric material that during operation is in contact with the discharge. The impedance of the dielectric material is small and its electron affinity is negative. In this way it is realized that the discharge lamp can be operated efficiently at low frequencies (less than 500 KHz).
Abstract:
Light source (1) comprises a discharge vessel (2) filled with a gas and an electron beam source (4) located in a vacuum or in a region of low pressure. The electron beam source produces electrons (12) which enter the discharge vessel through a foil (8) having a diamond layer. An Independent claim is also included for a process for the production of the foil for the light source comprising depositing carbon atoms on a substrate (7) to form the diamond layer and back etching the substrate so that the remaining part of the substrate is molded into a frame for the foil. Preferably the diamond layer has a thickness of less than 100, especially less than 50 microns. The diamond layer has a metallic solder layer or an organic adhesive layer.
Abstract:
In a capacitively coupled discharge lamp the electrode comprises a dielectric material that during operation is in contact with the discharge. The impedance of the dielectric material is small and its electron affinity is negative. In this way it is realized that the discharge lamp can be operated efficiently at low frequencies (less than 500 KHz).
Abstract:
A light source has a discharge vessel which is filled with a filling gas, and an electron beam source which is arranged in vacuum or in a region of low pressure. The electron beam source generates electrons which are propelled through an entry foil into the discharge vessel. An electric field may be generated inside the discharge vessel.
Abstract:
Light source (1) comprises a discharge vessel (2) filled with a gas and an electron beam source (4) located in a vacuum or in a region of low pressure. The electron beam source produces electrons (12) which enter the discharge vessel through a foil (8) having a diamond layer. An Independent claim is also included for a process for the production of the foil for the light source comprising depositing carbon atoms on a substrate (7) to form the diamond layer and back etching the substrate so that the remaining part of the substrate is molded into a frame for the foil. Preferably the diamond layer has a thickness of less than 100, especially less than 50 microns. The diamond layer has a metallic solder layer or an organic adhesive layer.
Abstract:
A light source has a discharge vessel which is filled with a filling gas, and an electron beam source which is arranged in vacuum or in a region of low pressure. The electron beam source generates electrons which are propelled through an entry foil into the discharge vessel. An electric field may be generated inside the discharge vessel.
Abstract:
A security system is described,comprising a sensor module (15) which accommodates a laser sensor(10)working with self-mixing interference. The laser sensor(10)generates measurement data which are related to the velocity of an object such as the body of a human being and,optionally,the distance between the laser sensor (10) and the object. Dependent on the measurement data assembled by the laser sensor (10)and supplied to a control circuit(30)such as an airbag computer, the airbag computer activate security means such as an airbag(35)in order to prevent injuries of the human body. Furthermore, a method of driving such a security system is described.
Abstract:
The invention relates to a high-intensity discharge lamp for a vehicle-light projector system, comprising a base (4) that carries an outer envelope (1) in which a burner (2) is arranged, the burner (2) comprising a discharge chamber (21) into which two electrodes (22, 23) project, the discharge chamber (21) being filled at least with an inert gas, a mixture of metal halides and a salt reservoir, the so-called 'salt lake' (25). The outer envelope (1) has a coating (31) in strip form that screens off light and that extends, on the side of the outer envelope (1) adjacent the salt lake (25), for at least 40 % of the length of the outer envelope (1) and whose width covers an angle of between 90° and 180° around the outer envelope (1). The invention also relates to a projector system for motor vehicle headlamps comprising at least one high- intensity discharge lamp of this kind.