摘要:
Eine Lampe-Reflektoreinheit besteht aus einer Lampe, insbesondere Glimmlampe (1) und einem optischen Reflektor, insbesondere eine spiegelnde Folie (2), wobei die Lampe (1) und der Reflektor (2) in einem Block (3) aus mindestens teilweise lichtdurchlässigem Isolierstoff eingebettet sind. Die beiden Stromzuführungen (6a; 6b) der Lampe (1) unterstützen ggf. die Krümmung der Folie (2), sowie deren Justierung bezüglich des Lampenkolbens (4) und sind mit Außenkontakten (13a; 13b) verbunden. Alternativ ist der Reflektor als mindestens eine spiegelnde Schicht ausgebildet, die auf einem Teilbereich der Oberfläche des Lampenkolbens oder des Blocks aufgebracht ist.
摘要:
An electrodeless fluorescent lamp comprises a sealed lamp vessel (G) containing a luminescent layer (P) and a fill capable of sustaining a discharge when suitably excited by an electric field. A coating (FTO) of electrically conductive light transparent material is provided on the external surface of the vessel to confine the electric field within the vessel (G). The conductive coating (FTO) is covered with a transparent insulative layer (2) and is electrically connected to a mains decoupling capacitor for electrical safety and to reduce conducted interference. Preferably the layer 2 is a silicone sheath.
摘要:
A lamp (L1) comprises a light-transmitting airtight container such as glass tube (1) provided with portions to be sealed at both ends thereof, a light emitting means, including a fluorescent luminous layer (7) and electrodes (3), provided in the light-transmitting airtight container and a metal oxide layer (6) formed directly or indirectly on an inner surface of the light-transmitting airtight container and vitrified at least at the seal portion thereof (6a). A lighting apparatus (P1) comprises a main body (9), the lamp (L1) mounted to the main body (9) of the structure described above and an operating unit (10) mounted to the main body (9) for operating the lamp (L1).
摘要:
An electrodeless fluorescent lamp comprises a sealed lamp vessel G containing a fill capable of sustaining a discharge when suitably executed. The fill is excited by an RF electromagnetic field produced by a winding 4 energised by an RF oscillator 5 powered via a rectifier 6 from the mains. To confine the RF field within the vessel a conductive coating FTO is provided inside the vessel G. To at least reduce conducted interference a conductive coating A1 is provided on the outside of the vessel G. The coating A1 is electrically coupled (e.g. via 7) to RF ground which may be one side of the mains. An electrically insulative housing covers the coating A1. The housing which extends to a zone of maximum diameter of the vessel G may grip the vessel.
摘要:
A discharge lamp (36) having a lamp envelope (10) with at least one sealed end (16,17) which is disposed in the base member (28) of the discharge lamp (36) includes an excitation arrangement capable to emit light output upon sufficient energization, an energization arrangement (34) disposed in the base member (28) sufficient to excite the lamp envelope (10). The sealed end (16,17) of the lamp envelope (10) has a roughened texture (25,26) disposed around a substantial portion thereof. The texturized region is grit blasted and structurally weaker than the remaining portion of the lamp envelope (10). At least one sealed end (16,17) of the lamp envelope (10) is texturized and is effective so as to: shut down the discharge lamp (36) upon the possible occurrence of a high temperature condition and, upon shut down, substantially maintain the envelope fill material within the lamp envelope (10) and base member (28).
摘要:
An arc lamp suitable for use as a high intensity light source in a projection system is described. A reflector (44) is arranged to reflect the light produced by the arc into a directional light beam, secondary reflection means being arranged to direct part of the reflected beam so as to compensate for regions which are obscured by the electrodes. Means are provided within the light source to dissipate heat generated by the electrodes.
摘要:
Incandescent reflector lamps of the R and ER type having a metallic light-reflecting coating (34) inside exhibit a pleasing soft white appearance with substantially diminished glare and filament hot spots when the forward, light-projecting portion of the lamp envelope is coated with a coating (36) comprising a silicone containing untreated titanium dioxide particles of a relatively coarse or large size.