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- FEL_lamp abstract "The FEL lamp (less accurately called a light bulb) is an ANSI standard 1000 watt quartz halogen lamp with a G9.5 medium 2-pin base used in many stage and studio lights that costs around $12 and is available from a number of manufacturers including GE, Osram, Ushio, Eiko, and Philips. What sets this apart from other lamps used for similar purposes is that it almost literally sets the standard (more precisely, it is the means by which the standard is transmitted from one location to another). Specially seasoned and calibrated FEL lamps are used in laboratories as radiance and irradiance standards (related to luminance and illuminance) used to calibrate photometers, light meters, spectophotometers and other laboratory instruments. For nine thousand dollars (and up), one can buy an FEL lamp from NIST that has been calibrated for light output, color temperature, and spectral energy distribution. NIST Traceable FEL lamps are available from commercial suppliers. Matching sockets for the G9.5 base include Sylvania TP22, TP220, Buhl Electric QEW-2, QEW-21, QEW-22, Bender + Wirth 968, Ushio: C-3, C-3(A). The calibration lamps are generally modified to use a larger bi-post base that fits into special kinematic mount sockets for precise optical alignment. Although the socket for calibration lamps is not polarized, polarity must be observed because the calibration lamps are normally run on DC and the lamp filament will recrystalize according to the applied DC polarity.".
- FEL_lamp wikiPageExternalLink V112.N01.A03.pdf.
- FEL_lamp wikiPageExternalLink Metrologia_1996.pdf.
- FEL_lamp wikiPageExternalLink specRadiFlux.html.
- FEL_lamp wikiPageExternalLink 39010C.
- FEL_lamp wikiPageExternalLink 1996%20Ohno%20(OSA%20handbook%20of%20applied%20photometry)%20Photometric%20standards.pdf.
- FEL_lamp wikiPageExternalLink index.shtml.
- FEL_lamp wikiPageExternalLink lxspot11.htm.
- FEL_lamp wikiPageID "17454549".
- FEL_lamp wikiPageRevisionID "532039758".
- FEL_lamp hasPhotoCollection FEL_lamp.
- FEL_lamp subject Category:Lamps.
- FEL_lamp type Artifact100021939.
- FEL_lamp type Device103183080.
- FEL_lamp type Instrumentality103575240.
- FEL_lamp type Lamp103636248.
- FEL_lamp type Lamps.
- FEL_lamp type Object100002684.
- FEL_lamp type PhysicalEntity100001930.
- FEL_lamp type SourceOfIllumination104263760.
- FEL_lamp type Whole100003553.
- FEL_lamp comment "The FEL lamp (less accurately called a light bulb) is an ANSI standard 1000 watt quartz halogen lamp with a G9.5 medium 2-pin base used in many stage and studio lights that costs around $12 and is available from a number of manufacturers including GE, Osram, Ushio, Eiko, and Philips. What sets this apart from other lamps used for similar purposes is that it almost literally sets the standard (more precisely, it is the means by which the standard is transmitted from one location to another).".
- FEL_lamp label "FEL lamp".
- FEL_lamp sameAs m.0462nxv.
- FEL_lamp sameAs Q5425349.
- FEL_lamp sameAs Q5425349.
- FEL_lamp sameAs FEL_lamp.
- FEL_lamp wasDerivedFrom FEL_lamp?oldid=532039758.
- FEL_lamp isPrimaryTopicOf FEL_lamp.