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LED MEASUREMENT

Photonics Spectra
Mar 2004
Labsphere Inc., PhotonicsRequest Info
 
LED Measurement Offering rapid, repeatable LED measurement, the OmniLed system from Labsphere Inc. consists of a radiometer, a spectrograph and a selection of optical heads. Suitable for production and laboratory environments, the system enables users to measure flux at the wafer level. Because it can be used from this level through complete LED assembly, it nearly eliminates the variability resulting from the use of different measurement equipment. OmniLed measures optical flux or intensity, current, voltage, optical power and common colorimetric data. Options include multiple heads for a broad measurement range and the ability to manipulate collected data for binning, wafer mapping and integration into the manufacturing information system.


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GLOSSARY
radiometer
A device used to measure the intensity of radiant energy.  
spectrograph
An optical instrument for forming the spectrum of a light source and recording it on a film. The dispersing medium may be a prism or a diffraction grating. A concave grating requires no other means to form a sharp image of the slit on the film, but a plane grating or a prism requires auxiliary lenses or concave mirrors to act as image-forming means in addition to the dispersing element. Refracting prisms can be used only in parallel light, so a collimating lens is required before the prism and...
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