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CCD CAMERA

Photonics Spectra
Jun 2004
PhotometricsRequest Info
 
CCD CAMERA The CoolSnapK4 from Photometrics is a CCD camera system for full field-of-view fluorescence microscopy. It has a 2048 × 2048-element active array with 7.4 × 7.4-µm pixel pitch, and low-noise electronics that deliver 12-bit images at 20 MHz. The spatial resolution of the detector is matched to that of optical microscopes, eliminating the need for intermediate demagnifying optics. A progressive-scan, interline-transfer CCD from Kodak, with microlenses, provides good sensitivity, and TE cooling down to –25 °C minimizes dark current noise. The system provides 4096 levels of gray-scale data for quantitative analysis, and the company says that its camera head, high-speed PCI card and software can be quickly installed.


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GLOSSARY
fluorescence microscopy
Observation of samples using excitation produced fluorescence. A sample is placed within the excitation laser and the plane of observation is scanned. Emitted photons from the sample are filtered by a long pass dichroic optic and are detected and recorded for digital image reproduction. 
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