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Topic: Xenon arc lamp


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In the News (Wed 19 Nov 08)

  
  Light Sources: Lamps   (Site not responding. Last check: 2007-11-04)
Xenon compact arc lamps are made with rated wattages from 75 to 30,000 watts and are available for operation in either a vertical or horizontal position.
Arc flutter is the rapid side-to-side displacement of the arc column as it is buffetted by convection currents in the xenon gas which are caused as the gas is heated by the arc and cooled by the envelope walls.
The useful life of compact arc lamps is determined primarily by the decrease of luminous flux caused by the deposit of evaporated electrode material on the inner wall of the envelope.
www.pti-nj.com /obb_lamps.html   (1416 words)

  
 Short Arc Lamps
Short arc lamps are used in applications such as graphic arts, photochemistry, medical, electro-optics, searchlights, stage and studio projection lighting, optical instrumentation, and military guidance and fiber optic illumination.
This causes the thorium to migrate to the cathode surface.
The short arc envelope is made on a large special lathe that heats a piece of quartz tube to a near molten point using either a hydrogen or propane and oxygen torches.
www.hilltech.com /products/uv_components/Short_arc_lamps.html   (1488 words)

  
 Nikon MicroscopyU: Interactive Java Tutorials - Focusing and Alignment Mercury and Xenon Arc Lamps
In a mercury arc lamp, plasma balls are located adjacent to both the cathode and anode, and each has approximately the same intensity, which is twice that in the center of the arc.
The arc itself is very small (about 1 or 2 millimeters in length), and the image of the arc must be positioned along the optical axis of the microscope, at the center of the condenser aperture in the vertical illuminator, to ensure even illumination.
Regardless of whether alignment of the arc is accomplished with the aid of an accessory or with a white piece of paper placed on the microscope stage, both methods project the arc image that is present at the entrance pupil of the objective, in effect, the rear objective aperture.
www.microscopyu.com /tutorials/java/arclamp/index.html   (2009 words)

  
 Olympus FluoView Resource Center: Non-Coherent Light Sources for Confocal Microscopy
Arc lamps possess higher coherence unless a large area of the plasma (see Figure 1) is utilized as the source.
Arc lamps are several orders of magnitude more radiant than tungsten filament lamps of comparable wattage, primarily because of the small size of the arc compared to a lamp filament.
In general, arc lamps are less stable than filament lamps because the gas plasma is unstable and affected both by magnetic fields and by the erosion of the electrodes.
www.olympusfluoview.com /theory/noncoherentsources.html   (4165 words)

  
 Rare gas arc lamp having hot cathode - Patent 4882520
A lamp according to claim 1 further comprising a reflection layer disposed between the inner surface of the tube and the fluorescent layer except over a prescribed area of the inner surface of the tube for radiating light in a predetermined direction through the prescribed area.
A xenon glow lamp and a fluorescent lamp are used for a light source of an apparatus, such as, e.g., copying machine, facsimile device, etc. The xenon glow lamp and the fluorescent lamp also are used for a backlighting of a liquid crystal display.
Xenon gas is sealed at 80 Torr in the arc lamp of the present invention.
www.freepatentsonline.com /4882520.html   (2674 words)

  
 Short Arc/Compact Source Lamps
Underpowering an arc lamp can also be bad, since a slightly-too-cool electrode does not emit electrons easily, and the voltage drop in the cathode region of the arc increases and causes positive ions to hit the cathode harder, which "sputters" off cathode material.
However, the arcs in these lamps are not as small nor as intense as in short arc mercury, xenon, and mercury-xenon lamps of similar wattage so these lamps are considered "medium arc length" and not true short arc lamps.
Although the arc in an HMI lamp is intense, it is not as small and concentrated as the arc in mercury and xenon short arc lamps.
www.uvlamp.com /TechArt/shortarc.htm   (2508 words)

  
 (Lighting Technology) Endoscopic Illuminaton Design with Metal-Halide Technology (MEM archive, Apr 02)
Halogen and xenon arc lamp designs have traditionally been the viable options for light sources in endoscopy, but there is a wide gap between the two.
Their lifetime is 1000 hours, twice that of xenon arc lamps, and approximately 20 times that of halogen lamps.
Daylight metal-halide lamps exhibit a CCT of 5500 K, which is very close to xenon and substantially better than halogen at about 3200 K. Over the life of the lamp, however, metal-halide lamps have the potential for some slow color-temperature drift.
www.devicelink.com /mem/archive/02/04/001.html   (2540 words)

  
 Lambda LS | Stand Alone xenon arc lamp - Light source for microscope
The Lambda LS is a stand-alone illuminator consisting of a xenon-arc lamp, lamp housing, cold mirror and power supply in a single enclosure.
Unlike the arc lamps used with most fluorescence microscopes, the 175W xenon bulb is pre-aligned using a parabolic mirror and does not require alignment, focusing or collimation.
This system eliminates a common failure associated with standard arc lamp designs; when using a remote power supply aging may lead to a decreased ability to light the lamp due to loss of the insulating characteristics of the lengthy high-tension line.
www.sutter.com /products/product_sheets/Lambda_LS.html   (447 words)

  
 Lamp Safety   (Site not responding. Last check: 2007-11-04)
Lamps should be allowed to cool for a minimum of ten (10) minutes after the lamp is turned off.
Xenon arc lamps should not be used beyond their rated service life.
Xenon arc lamps must be disposed of in a careful and proper manner in order to prevent injury.
www.ushio.com /support_lampsafety.htm   (1405 words)

  
 Power supply to xenon ARC lamp interface - Patent 6376993
A typical short arc lamp comprises an anode and a sharp-tipped cathode positioned along the longitudinal axis of a cylindrical, sealed concave chamber that contains xenon gas pressurized to several atmospheres.
The arc lamps usually start on a first attempt by the igniter, but if that fails several more pulses of high voltage can be issued.
If the lamp connected between output terminals 322 and 324 is on at all, a transistor 358 will switch on and drive another external LED indicator, this one for "lamp on".
www.freepatentsonline.com /6376993.html   (2937 words)

  
 Reflected Ultraviolet Photography - Sources of UV radiation   (Site not responding. Last check: 2007-11-04)
The high-pressure mercury vapour lamp fitted with a Wood's filter (Figure 14), is the standard instrument in dermatology for examining the skin under ultraviolet-this filter virtually restricts output of the lamp to a line at 365nm.
The 'classic' Wood's lamp found in many laboratories and clinics is a high pressure mercury vapour lamp fitted with a UV transmission filter - or Wood's filter - which effectively restricts the lamp's output to a single line spectrum at 365nm.
The xenon flash discharge tube has a very high output between 300 and 400nm and is the most useful source of ultraviolet to the biomedical photographer.
msp.rmit.edu.au /Article_01/04.html   (1374 words)

  
 UV Curing Lamps
The most common arc lamp for curing uv is a mercury lamp with a peak wavelength of 365nm.
As the internal temperature of the metal halide lamp increases to the vaporization point of the metals, the positive ions being produced allow the metals to release their outer electrons causing ultraviolet radiation output at specific wavelengths.
If the lamps are over heated for even a short period of time, iron is separated from the salt that is formed with the halogen and irreversibly fuses to the quartz.
www.hilltech.com /products/uv_components/UV_curing_lamps.html   (1043 words)

  
 Labsphere Inc Product   (Site not responding. Last check: 2007-11-04)
Xenon lamps provide significantly greater spectral radiation in the blue and ultraviolet regions of the spectrum over traditional tungsten-halogen lamps.
Uniform Source spheres are insensitive to the normal spatial fluctuations of Xenon input beams, and therefore produces a stable uniform blue radiance.
Xenon arc lamp uniform source spheres are used for many applications including calibration; flat fielding and testing of remote sensing cameras and detectors which operate in the blue region of the spectrum.
www.lightsearch.com /ads/product/labsphere6.html   (88 words)

  
 ARC: Products & Applications
Uses: The mercury short arc lamps produce intense radiation by an electric gas discharge, in which the mercury atoms are excited into a plasma.
The deep ultraviolet short arc lamps are used for photoresist stabilization, and photolithography.
Uses:The xenon long arc lamp is ideally suited for illumination of a large surface area, for example, solar cell testing, solar simulation, rapid thermal processing, and material inspection.
www.arc-lamps.com /products.html   (505 words)

  
 Short Arc/Compact Source Lamps
Short arc lamps should be operated only at the wattage they were designed for and with the type of current they were designed for.
The color and spectrum are somewhat like that of a "daylight" fluorescent lamp, except the yellow mercury line is stronger with the still-high mercury pressure and this makes the short arc lamp not quite as blue nor have quite as good color rendering as the "daylight" fluorescent lamp.
This loss is not as bad as it is in general purpose high intensity discharge lamps since the arc is shorter, but is still in addition to the horrendous electrode loss that short arc lamps have.
members.misty.com /don/shortarc.html   (2964 words)

  
 xenon arc lamp information -- xenon arc lamp   (Site not responding. Last check: 2007-11-04)
Mercury and Xenon Arc Lamp spectra The super-pressure xenon arc-discharge lamp is often used when a wide range of excitation wavelengths is required.
The Xenon Arc lamp of the Fadometer was filtered to approximate the spectral distribution of natural sunlight.
Hydrochlorothiazide was irradiated for 30, 60, 90 and 120 min with a 250 W xenon arc lamp using a WG295 cut-off filter.
www.itemlamp.info /xenonarclamp   (1203 words)

  
 UV Flashlamps from Xenon Corporation
Xenon Corporation has over 40 years of high intensity pulsed UV lamp design and manufacturing to meet industry, research and educational needs.
The ability to shape the lamp to the application, providing better uniformity and enhanced matching of the UV light with the substrate, is a benefit for demanding applications.
Spiral shaped pulsed UV lamps meet the need for fast, low heat adhesive bonding of two polyethylene discs as well as complete curing of thick top-layer coatings used with new formats such as Blu-ray Disc™.
www.xenoncorp.com /lamps.html   (271 words)

  
 Continuously and apparently continuously operating xenon lamps
Please note that automotive high intensity discharge lamps are not so much xenon lamps as they are specialized metal halide lamps, and they are expensive and the ballasts for them are expensive and these lamps have more severe starting voltage requirenments than more ordinary metal halide lamps.
The spectrum of a xenon arc lamp is like that of daylight in much of the ultraviolet, through the visible spectrum, and in much of the infrared.
In a short arc lamp with a pressure of several atmospheres or more at room temperature and dozens to maybe over a hundred atmospheres hot, it takes hundreds of watts per centimeter to make the xenon effeciently radiate a daylight-like continuous spectrum.
members.misty.com /don/contxe.html   (2123 words)

  
 Fort Imaging Systems - Explore the inaccessible - Solutions/Illumination/Xenon arc
The xenon arc lamp range is based on two references, offering lighting power levels of 50W and 180W.
The xenon arc technology makes these sources ideal for assisted vision applications where the colour is essential to the checking process (e.g.: looking for corrosion).
Their colour temperature (5400°K) is very close to that of natural light, thus preventing the colorimetric distortions that lead to loss of essential information when the image is captured.
www.fort-fr.com /en/Solutions/Illumination/ArcXenon.htm   (131 words)

  
 Xenon Short Arc Lamp   (Site not responding. Last check: 2007-11-04)
This is a xenon short arc lamp, it consists of a large PSU(Power Supply Unit) and a remote unit which contains the bulb.
Once the lamp is running it draws about 30 volts DC from the power supply, at around 15-25 amps dependant on the power setting.
The lamp will only start if it is facing towards an window during the daytime, or you shine a flashlight into the bulb itself.
www.thaltech.com /laser/xenon.html   (313 words)

  
 Coatings That Weather the Testing Storm
A high-intensity xenon arc lamp line source sits at the center of a stainless steel chamber.
The lamp output is intended to simulate sunlight; some of it is channeled through a light pipe to an ultraviolet (UV) bandpass filter, and then on to a photodetector.
The xenon arc lamp source approximates solar radiation well; however, its output does contain some intense spectral lines in the IR and also extends deeper into the UV than the sun does (Figure 2).
www.ptbmagazine.com /Jan00/ptb.0100coat.html   (1528 words)

  
 Lamp Housings: General Information   (Site not responding. Last check: 2007-11-04)
Because the ellipsoid encloses a large portion of the solid angle about the arc lamp, over 65% of the lamp's emission is collected and focussed at the output.
Compare this to the typical performance of a traditional lamp housing design, such as that used in the A-500, where roughly 10% of the light is collected.
With the arc lamp precisely positioned at one focal point, the collected light is focussed at the second focal point.
www.pti-nj.com /obb_1s1.html   (572 words)

  
 BVDA: Polilight PL400
The output is not as high as that of a xenon arc lamp of comparable wattage would deliver, especially in the UV and blue region, but the light output is still high.
Since the electronics that are needed for the lamp are much simpler than those necessary for a xenon arc lamp, the PL400 weighs less than the PL500 and the older PL6 and PL10 units.
The metal halide arc lamp has a long lamp life and is cheaper to replace than a xenon arc lamp.
www.bvda.com /en/sect16/en_16_1b.html   (705 words)

  
 Cairn Research Ltd. High Intensity Xenon Arc Lamps
The greater heat dissipation capability of the Optosource allows it to be used with 150W lamps as well, for which we have developed a 150W version of the power supply, with otherwise similar characteristics.
While the greater optical output of the 150W version may well be useful in some applications, the characteristics of 150W compared with 75W lamps are such that the focussed spot is bigger rather than brighter, and our initial comparisons have shown that the 75W version is actually the better choice for the Optoscan.
Although xenon lamps typically run at only about 10-20V, they require a high-voltage trigger pulse of around 30KV to initiate the arc.
www.cairnweb.com /systems/prod_lamp.html   (807 words)

  
 Ultimate AV: JVC DLA-G150CL D-ILA front projector
When others were adopting short-arc metal-halide and vapor lamps, JVC opted for xenon arc lamps to improve white balance.
On one hand, its white point is much closer to D6500, and the lamp exhibits more even spectral output than the UHP, UHM, or other short-arc lamps used in most LCD and DLP home theater projectors.
That's 2.5 times the cost of those competing short-arc lamps, which are claimed to run for 3000 hours or more.
www.guidetohometheater.com /videoprojectors/94   (774 words)

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