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CCD Sensors

Photonics Spectra
Oct 2010
Hamamatsu CorporationRequest Info
 
Hamamatsu Corp. has introduced CCD linear image sensors with an internal electronic shutter function. Designed for use in spectrometers, the S11155-2048 and S11156-2048 are back-thinned and achieve 10-MHz maximum readout due to their resistive gate structure. They have a spectral response range from 200 to 1100 nm with high sensitivity in the UV region. Other features include low image lag, an improved antiblooming function and reduced etaloning effects. The S11155-2048 has pixels measuring 14 x 500 μm, while the S11156-2048’s pixels measure 14 x 1000 μm. Both devices have 2048 pixels and are supplied in a 24-pin ceramic dual in-line package with a quartz glass window.


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GLOSSARY
etaloning
A phenomenon that degrades the performance of thinned, back-illuminated CCDs. The effect is caused by lightwaves passing through the CCD and reflected at the rear surface, producing interference fringes when they interact with incoming waves.
glass
A noncrystalline, inorganic mixture of various metallic oxides fused by heating with glassifiers such as silica, or boric or phosphoric oxides. Common window or bottle glass is a mixture of soda, lime and sand, melted and cast, rolled or blown to shape. Most glasses are transparent in the visible spectrum and up to about 2.5 µm in the infrared, but some are opaque such as natural obsidian; these are, nevertheless, useful as mirror blanks. Traces of some elements such as cobalt, copper and...
pixel
Contraction of "picture element." A small element of a scene, often the smallest resolvable area, in which an average brightness value is determined and used to represent that portion of the scene. Pixels are arranged in a rectangular array to form a complete image.
quartz
See crystal quartz; fused quartz.
sensor
1. A generic term for detector. 2. A complete optical/mechanical/electronic system that contains some form of radiation detector.
shutter
A mechanical or electronic device used to control the amount of time that a light-sensitive material is exposed to radiation.
spectral response
Measure of a detector's signal during exposure to radiation of a constant power level and varying wavelength.
spectrometer
A kind of spectrograph in which some form of detector, other than a photographic film, is used to measure the distribution of radiation in a particular wavelength region.  
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