Abstract: A low-pressure gas discharge lamp having a gas discharge vessel containing a gas filling including a copper compound. The copper compound is selected from the oxides, chalcogenides, hydroxides, hydrides and the metalorganic compounds of copper. In addition to the copper compound, the gas filling includes a buffer gas such as argon, and may also include a thallium compound and/or a copper halogenide.
Type:
Grant
Filed:
September 7, 2001
Date of Patent:
August 5, 2003
Assignee:
Koninklijke Philips Electronics N.V.
Inventors:
Rainer Hilbig, Robert Peter Scholl, Achim Koerber, Johannes Baier
Abstract: High lumen output quartz metal halide lamps are provided which comprise a vacuum outer fill, and a silicon nitride CVD coating on the outside of the quartz arc tubes (discharge tubes). Instead of nitrogen filled outers, vacuum lamp outers are used to reduce energy loss (since heat conduction loss is reduced) and to increase lumen output. Additionally, only the outside of the arc tubes is coated with silicon nitride, without coating the metal components. This reduces or blocks sodium diffusion through the quartz walls. The silicon nitride coating also retards migration of the trace hydrogen from the lamp outer into the arc tube. At least about a 10% increase, and preferably a 15% increase in lumen output is realized by using a vacuum lamp outer instead of the nitrogen fill outer conventionally used for the traditional quartz fill lamps. The heat conduction loss is reduced and the lamp efficiency is increased significantly.
Abstract: Water flow heater with a first heater element (20) for supplying a fixed power, a second, controllable heater element (30), a temperature sensor (40, 50) for measuring the temperature of heated water, and a control unit (22, 32, 80) for controlling the heat supply from the second heater element (30) in dependence on a temperature detected by the temperature sensor (40, 50). A water flowrate lying within a predetermined range is safeguarded in that a pump (60) is provided for generating a water flow through a channel (13), and the control unit is designed so as to activate the heater elements (20, 30) in dependence on activation of the pump (60). As a result, the first heater element (20) of fixed power can have a comparatively high power rating without the risk of water being too strongly heated thereby.
Type:
Grant
Filed:
October 2, 2001
Date of Patent:
July 29, 2003
Assignee:
Koninklijke Philips Electronics N.V.
Inventors:
Hans Kodden, Thijs De Haan, Simon Kaastra
Abstract: A gas discharge lamp fitted with a gas discharge vessel filled with a gas filling is suitable for a gas discharge which emits VUV radiation, with a luminophore coating containing a down conversion luminophore and with means for igniting and maintaining a gas discharge in which the down conversion luminophore has in a host lattice a pair of activators of the a first lanthanoid ion and a second lanthanoid ion and a sensitizer selected from the group of the copper (I) ion, silver (I) ion, gold (I) ion, zinc (II) ion, gallium (III) ion, indium (III) ion, thallium (III) ion, germanium (IV) ion, tin (IV) ion and lead (IV) ion, is environmentally friendly and has a high lamp efficiency &eegr;lamp.
Abstract: A marking (3 to 5) is provided in a surface (8) of an element (1) which comprises a substrate (6) of aluminum or an alloy thereof and an anodized outer layer (7) in that a region (10) of the surface (8) is irradiated with a laser beam such that at least one visual property of the surface (8) in said region (10) is changed and a visual marking (3 to 5) is obtained which is observable to the human eye. The laser beam penetrates the anodized outer layer (7) at least to a major degree and induces the change in the at least one visual property substantially locally only in a zone (9) where the anodized outer layer (7) adjoins the substrate (6).
Abstract: A display device comprises a color filter pattern between a phosphor pattern and a display window. For blue, the thickness (t2) of this color filter pattern is more than 2.5 micrometer, preferably 5-7 micrometer, and/or for red said thickness is 0.25-1.5 micrometer. The red and/or blue color filter patterns are provided by means of a non-linear photoresist. This enables an improved contrast (LCP) to be achieved.
Type:
Grant
Filed:
December 21, 1998
Date of Patent:
July 8, 2003
Assignee:
Koninklijke Philips Electronics N.V.
Inventors:
Arie R. Van Doorn, Godefridus P. Van Melis
Abstract: The electric lamp has a ceramic lamp vessel (1) having a filling of rare gas and metal halide. Current conductors (2, 3) which support electrodes (4, 5) inside the discharge vessel (1) enter the discharge vessel (1) in a gastight manner through a ceramic sealing compound (6). At least one of the current conductors (2, 3) has inside the lamp vessel (1) a first, halogen-resistant part (21, 31) which is selected from tungsten silicide, molybdenum aluminide, molybdenum boride, pentamolybdenum trisilicide and combinations of at least two of these intermetallic compounds. These compounds have a coefficient of thermal expansion which corresponds to that of the discharge vessel (1). It is thereby prevented that the discharge vessel starts leaking if the ceramic sealing compound (6) extends beyond the first part (21, 31).
Type:
Grant
Filed:
December 2, 1999
Date of Patent:
July 8, 2003
Assignee:
Koninklijke Philips Electronics N.V.
Inventors:
Elisabeth Onnekes-Van Der Voort, Hendrik Dreuning, Franciscus H. Van Lierop, Peter A. Seinen, Martin F. C. Willemsen, Mark Bolech
Abstract: A massaging apparatus (1) comprises a housing (5) having an upper wall (4) and side walls (5, 6, 7, 8) and a bottom wall (9), and massaging means (10) in the area of the bottom wall (9), which massaging means (10) are movable over a body area of a person, which massaging apparatus (1) comprises handling means (29) for holding and guiding the apparatus when the massaging means (10) are moved over a body area, which handling means comprise at least a part of the upper wall (4) of the housing (3) and, in addition, at least one strip-like handle member (30), such that a hand can be inserted at least partly between the handle member (30) and the upper wall (4) of the housing (3), the handle member (30) being preferably constructed so as to be elastic, soft, extensible in its longitudinal direction and continuously adjustable, and consists of a core (51) of a soft material and of a sleeve (52) of a material which is mild to the skin and which surrounds the core (51).