摘要:
The invention describes a method of generating calibration data (ΔU x , CP x ) for a system (3) comprising a gas-discharge lamp (1) and a cooling arrangement (2) for cooling the lamp (1), which method comprises the steps of establishing a correlation (R P-U ) between a lamp operating parameter delta (ΔU) and a lamp cooling status parameter delta (ΔP, ΔB); and associating a cooling arrangement control parameter (CP, CP x ) with a lamp operating parameter delta (ΔU) on the basis of the established correlation (R P-U ). The invention also describes a method of calibrating a cooling arrangement (2) of a system (3) comprising a gas-discharge lamp (1) and a cooling arrangement (2) for cooling the lamp (1). The invention also describes a method of controlling a cooling arrangement (2) in a system (3) comprising a high-pressure gas discharge lamp (1). The invention further describes a system (3) comprising a high-pressure gas discharge lamp (1); a cooling arrangement (2) for cooling the lamp (1), which cooling arrangement (2) is calibrated using the calibration method according to the invention; and a cooling arrangement controller (33) for controlling the cooling arrangement (2) using the control method according to the invention.
摘要:
The invention relates to a high-pressure discharge lamp having an ignition aid and comprising a discharge vessel, which is accommodated in an outer bulb. The ignition aid is a UV enhancer having a can-like container (12), which has an inner electrode (18). At least part of the end-face edge of the inner electrode at least comes close to the end face (24) of the container (12). An external electrode is attached to the outside of the container.
摘要:
A high-pressure discharge lamp comprises a translucent ceramics airtight vessel (1) including an envelopment portion (1a) and a small-diameter cylindrical portion (1b) connected to the envelopment portion (1a) and having a sealing portion (SP). A current introducing conductor (2) is inserted in the inside of the small-diameter cylindrical portion (1b) including a sealing metal portion (2a) and a halogen-resistant portion (2b) connected each other. An electrode (3) is arranged at one end of the halogen-resistant portion (2b). The sealing portion (SP) is sealed by a fusion of melted poly-crystalline alumina ceramics of the small-diameter cylindrical portion (1b) at the sealing metal portion (2a) of the current introducing conductor (2), and the melted alumina ceramics includes aluminum grain growth control additives.
摘要:
The invention relates to a direct-current discharge lamp comprising an anode (10) and a cathode (12) disposed across from one another at a predetermined distance (r) inside a discharge vessel (14) filled with a filling gas, wherein electrical power (P) may be applied to the anode (10) and cathode (12) in order to produce a gas discharge, wherein at least the distance (r) between the anode (10) and cathode (12), the electrical power (P), and a geometry of the anode (10) are adapted to one another such that, in the heated state of the direct-current discharge lamp, a region (22) of a surface (24) of the anode (10) facing the cathode (12) is free flowing.
摘要:
An arc discharge light source (10) for automotive headlight applications comprises an arc tube (12) having a hollow body (14) arrayed a long a longitudinal axis (16) and provided with first and second ends (18, 20). The first and second ends have, respectively, first and second jointure areas (22, 24) with the hollow body (14). Electrodes (26, 28) are sealed respectively in each of the first and second ends (18, 20). An arc generating and sustaining medium is contained within the hollow body. a low-voltage-pulse starting aid (30) is associated with the arc tube and comprises an electrically conductive member (32) having an intermediate portion (34) and proximal and distal ends (36, 38). The intermediate portion (34) extends the length of the hollow body (14) and the proximal and distal ends (36, 38) each terminating in a loop (40, 42) comprised of a single turn of electrically conductive material. The loop (40) from the proximal end (36) surrounds the first jointure area (22) and the loop (42) from the distal end (38) surrounds the second jointure area (24).
摘要:
An electric discharge tube capable of withstanding a large electricity inputted therein, being reduced in size, and capable of realizing a small photo stroboscopic device and a photo camera, comprising a glass bulb sealed with rare gas and having a wall thickness of 0.2 to 0.6 mm, a pair of main electrodes installed at both inner ends of the glass bulb and a trigger electrode formed on the outer surface of the glass bulb, and a silicon dioxide film formed on the inner surface of the glass bulb with a thickness of 0.05 to 0.11 νm, wherein an electric power of 0.90 Ws/mm3 or less on the glass bulb inside volume basis is inputted into a clearance between the main electrodes.
摘要:
A coating (6) consisting of inert material is applied to the inner wall of the discharge vessel (2). The layer thickness is so low that no absorption of the emitted radiation occurs.
摘要:
A ceramic arctube for use in a high intensity discharge lamp. The arctube includes a ceramic light transmitting tube which surrounds the arc. The light transmitting tube has two or more features selected from the group consisting of (a) an inner diameter less than 2.6 mm, (b) a wall thickness of less than 1.4 mm, (c) an average grain size of greater than 20 microns or less than 5 microns or real in-line transmission (RIT) greater than 20 %, and (d) an inner surface or outer surface having an Ra value less than 100 nm. These features lead to a smaller apparent size of the arc source and less scattering of light, resulting in improved performance of the arctube in a reflector lamp.