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Topic: Bolometer


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  supervisor bolometer lab cv search
Advanced to position from Senior IR Detector Packaging Technician - Lead.
Direct Bolometer FPA Manufacturing operations, including hiring and training of technicians and engineers, processing, forecasting and planning manufacturing strategy.
Determine manufacturing priorities and standards for array processing and equipment utilization.
www.space-careers.com /agency/cvview_4232.html   (953 words)

  
 [No title]   (Site not responding. Last check: 2007-11-04)
The bolometer of claim 1, wherein each of the bridges is provided with an anchor portion, a leg portion and an elevated portion, the anchor portion including a via hole through which one end of the conduction line is electrically connected to the connecting terminal.
The bolometer of claim 1, wherein top end of the electrical conduit is electrically connected to one end of the bolometer element and bottom end of the electrical conduit is electrically connected to other end of the conduction line.
The bolometer of claim 12, wherein the conduction line, the electrical conduit and the bolometer element are made of a titanium.
www.wipo.int /cgi-pct/guest/getbykey5?KEY=00/03214.000120&ELEMENT_SET=DECL   (1500 words)

  
 [No title]   (Site not responding. Last check: 2007-11-04)
One significant issue related to bolometers is that various operational characteristics of bolometers (in addition to the sensitivity of its active area to incident radiation and corresponding changes in bolometer resistance due to the incident radiation of interest) are functions of the temperature of the bolometer itself.
This variation in nominal resistance from bolometer to bolometer, with reference to an average nominal resistance of all of the bolometers, is referred to for purposes of this disclosure as an"offset error."Accordingly, each bolometer may be associated with a particular resistance value that reflects that bolometer's offset error.
This variation in response from bolometer to bolometer at a given calibration temperature is referred to for purposes of this disclosure as"gain error."Since a bolometer essentially measures the temperature of an object of interest relative to an average temperature of the scene being imaged, the gain of a bolometer may be expressed as
www.wipo.int /cgi-pct/guest/getbykey5?KEY=01/84118.011108&ELEMENT_SET=DECL   (13481 words)

  
 Berkeley Bolometer Group - Research
Bolometer systems would be simplified considerably if all components could be made photolithographically on a single substrate.
Planar antennas control the solid angle that is visible to the bolometer as with a horn, but are much easier to fabricate in large arrays.
The bolometer is attached at 4 points (see arrows) to tensioned silicon-nitride members running up to down in the photograph.
bolo.berkeley.edu /bolometers/research.html   (1587 words)

  
 Far Infrared Microbolometer Detectors
In these bolometers the conduction of heat out of the detector into both the substrate and the metal antenna are important.
We can model this bolometer in a particularly simple manner: a uniform bar of material in which power is dissipated uniformly, and whose ends are attached to perfect heat sinks (the metal of the antenna).
The bolometer photoresist pattern is then aligned to the antenna, the bismuth evaporated, and finally the lift-off performed.
weewave.mer.utexas.edu /MED_files/MED_research/microbolometers/bolo_paper/IRMMW_bolo_paper.html   (3610 words)

  
 Bolometer Development at the MPIfR
The Max-Planck Millimeter Bolometer array is installed at the IRAM 30 m telescope on Pico Veleta, Spain.
Since March 2000 the 19 channel submm bolometer array for 870 micron is under operation at the 10 m HHT.
Because SEST has no wobbling secondary mirror, our bolometer readout electronics had be modified to allow special observing modes.
www.mpifr-bonn.mpg.de /div/bolometer   (544 words)

  
 3.2.1 4-color Bolometer - Facility Instrument
Setup for the 4-color bolometer is straightforward: There are three basic areas that you have to deal with: computer commands, tertiary mirror setup, and bolometer configuration.
You will see a set of micrometers underneath the bolometer (labeled x and f), and set into the center of the bottom of the bolometer support plate, there is a single pin.
You have to adjust the bolometer's physical position, the x and f micrometer readings, and the bolometer bias to make the bolometer ready for use at the wavelength you desire.
steffens.as.arizona.edu /~smtsys/documents/smtoum/smtoum/node79.html   (1270 words)

  
 High-Tc Bolometer for far-infrared detection
Because of the central importance of the OH radical in the stratospheric ozone balance, ESA is currently coordinating investigations on different techniques to measure the global climatology of stratospheric OH.
The bolometer is required as the detector for the so called OHIO instrument.
The performance of the bolometer can be further improved by reducing the thermal conductance between the sensing element and the silicon substrate.
www.neiu.edu /~pjdolan/Link6   (611 words)

  
 Technology - Images & Videos
Taking some lessons from nature, the Jet Propulsion Laboratory (JPL) designed a novel "micromesh bolometer" to measure minute temperature variations in the cosmic microwave background, which provides a snapshot of the universe about 300,000 years after the Big Bang.
By absorbing millimeter-wave radiation from the cosmic microwave background, the bolometer measures the changing temperature of the micro web with a tiny thermometer made from specially developed Germanium.
The bolometer measures minute temperature variations (a 100-millionth of a degree or 0.0001 C) in the cosmic microwave background.
www2.jpl.nasa.gov /technology/images_videos/iv_pages/bolometer.html   (273 words)

  
 Micromachined Emitter/Bolometer Structures for Infrared Gas Sensors
In the presence of an infrared-absorbing gas, the amount of radiation returning to the emitter/ bolometer would decrease, causing the emitter/bolometer to come to thermal equilibrium at a lower temperature than it would in the absence of such a gas.
The temperature-dependent electrical resistance of the emitter/bolometer would be measured and used to infer the concentration of the infrared-absorbing gas.
This effect enhances the signal to- noise ratio of the bolometer considerably and enables the manufacture of a small, low-power, high-sensitivity gas sensor.
www.nasatech.com /Briefs/Dec01/NPO20931.html   (612 words)

  
 Bolometer
A bolometer features a specially constructed element of temperature-sensitive material.
bolometer element, the power absorption by the element heats the element and causes a change in its
The cross-sectional dimension of the bolometer element is
www.tpub.com /content/neets/14193/css/14193_106.htm   (355 words)

  
 SCULIB_FLATFIELD_SEQUENCE - get bolometer measurement sequence for FLATFIELD
Whatever bolometer is the target of the measurement, data will be taken from all A/D channels.
If the bolometers belong to more than one sub-instrument an error will be reported and bad status returned.
If the sub-instrument is not one of the arrays then the reference bolometer will not be used and the bolometers(s) will be measured in sequence.
www.strw.leidenuniv.nl /docs/starlink/ssn72.htx/node155.html   (435 words)

  
 CfCP: EDGE at Chicago
(An infrared bolometer measures changes in the heat input from the surroundings and converts this into a measurable quantity such as a voltage or current.
This technology is essential for EDGE science because unambiguous detection of the CIB requires a spectral decomposition of the sky signal, using multiple spectral bands, in order to separate it from Galactic dust emission.
The bolometer array is an innovative, compact, and extendable design that is applicable to upcoming space missions.
cfcp.uchicago.edu /research/cosmicradiation/edge   (1612 words)

  
 Bolometer Detector   (Site not responding. Last check: 2007-11-04)
The detector used in our experiments is an InSb hot electron bolometer cooled to liquid helium temperatures via an inner dewar of liquid helium surrounded by an outer jacket of liquid nitrogen.
The millimeter-waves are converted to a voltage signal, which passes through a low-noise preamplifier before being processed by a lock-in amplifier.
Below is a photograph of one of the bolometer detectors used by the Ziurys Group.
www.chem.arizona.edu /faculty/ziur/detector.html   (68 words)

  
 Bolometer
The bolometer is a loading device that undergoes changes of resistance as changes in dissipated power occur.
The two types of bolometers are the BARRETTER and the THERMISTOR.
In other words, one condition of balance exists when no rf power is applied; but in the presence of power, a second condition of balance exists because of the resistance changes of the bolometer.
www.tpub.com /neets/book16/67a.htm   (802 words)

  
 ACBAR Publications
The data span the 2002 austral winter during which ACBAR was mounted on the Viper Telescope at the South Pole.
We recover the atmospheric signal in the presence of instrument noise by calculating the correlation between signals from distinct elements of the ACBAR bolometer array.
We describe the Arcminute Cosmology Bolometer Array Receiver (ACBAR); a multifrequency millimeter-wave receiver designed for observations of the Cosmic Microwave Background (CMB) and the Sunyaev-Zel'dovich effect in clusters of galaxies.
cosmology.berkeley.edu /group/swlh/acbar/publications   (1010 words)

  
 SURFLIB_DECODE_REMSKY_STRING - Calculate bolometer list from remsky input
This governs the bolometers that are allowed to be returned.
Can be prefixed with a minus sign to indicate that a bolometer should be removed from the final list.
In effect this is equivalent to the actual number of bolometers on the array.
www.strw.leidenuniv.nl /docs/starlink/ssn72.htx/node57.html   (214 words)

  
 SCULIB_CALC_FLATFIELD - calculate flat-field results for a bolometer   (Site not responding. Last check: 2007-11-04)
This routine calculates the image parameters from data taken as a flat-field measurement of a SCUBA bolometer.
The volume will be the sum of all map pixels under a circle of 12 arcsec radius for short-wave array bolometers, or 25 arcsec for other types.
If this area laps over the edges of the map, or any pixels inside it have bad quality then a warning message will be output but QUALITY will stay good.
star-www.rl.ac.uk /star/dvi/ssn72.htx/node103.html   (590 words)

  
 Search Results for bolometer - Encyclopædia Britannica
In the first bolometer, invented by the American...
Beyond the red end of the visible range but at frequencies higher than those of radar waves and microwaves is the infrared region of the electromagnetic spectrum, between frequencies of 1012 and 5...
The greatest written works in one magnificent collection.
www.britannica.com /search?query=bolometer&submit=Find&source=MWTEXT   (221 words)

  
 AllRefer.com - bolometer (Physics) - Encyclopedia
You are here : AllRefer.com > Reference > Encyclopedia > Physics > bolometer
The bolometer was invented in 1880 by Samuel P. Langley.
Basically it consists of a radiation-sensitive resistance element in one branch of a Wheatstone bridge; changes in radiation cause changes in the electrical resistance of the element.
reference.allrefer.com /encyclopedia/B/bolomete.html   (188 words)

  
 Bolometer mapping - rotated chopping secondary   (Site not responding. Last check: 2007-11-04)
We now offer a new bolometer mapping mode at the 30m telescope using the rotated chopping secondary.
In this observing mode the scanning and the chopping direction can be rotated with respect to the azimuth direction.
The rotated map allows to scan perpendicular to the major axis of the galaxy.
iram.fr /IRAMFR/ARN/dec04/node4.html   (300 words)

  
 BOLOMETER DIAGNOSTIC   (Site not responding. Last check: 2007-11-04)
This information about the bolometer diagnostic is maintained by Anthony Leonard
On DIII-D two bolometer arrays provide measurements of the radiated power distribution and the total radiated power.
Both arrays consist of 24 channels and span the entire plasma.
fusion.gat.com /diag/bolo   (312 words)

  
 SHARC - the CSO's Bolometer Camera   (Site not responding. Last check: 2007-11-04)
Since installed at the CSO SHARC opened up new possibilities in the study of dust emission from protostars to protogalaxies.
With 20 bolometers (4 dysfunctional out of the total 24), mapping is faster than ever before, with the added benefit of approximately diffraction and background limited performance.
If you have made pointed observations (using CHOP_SLEWY), then you should use BADRS (Bolometer Array Data Reduction Software), by Dominic Benford.
www.submm.caltech.edu /cso/sharc/cso_sharc.html   (289 words)

  
 ACBAR Main Page
The Arcminute Cosmology Bolometer Array Receiver (ACBAR) is a sensitive multi-frequency reciever designed to measure slight temperature differences in the Cosmic Microwave Background.
The Cosmic Microwave Background (CMB) is the faint afterglow of the Big Bang which formed the universe.
Operational support was provided by the United States Antarctic Program.
cosmology.berkeley.edu /group/swlh/acbar   (131 words)

  
 SEST Receivers - SIMBA   (Site not responding. Last check: 2007-11-04)
SIMBA is a 37-channel hexagonal bolometer array, operating at 1.2 mm.
The HPBW of a single element is about 24", the separation between elements on the sky is 44".
Last modified by Markus Nielbock, June 21st, 2003
www.ls.eso.org /lasilla/Telescopes/SEST/html/telescope-instruments/simba   (336 words)

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