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KEENVIEW-G2 - FAST ON-AXIS TEM CCD CAMERA SOLUTION
Key features
KeenView
  • Up to 1376 x 1032 pixels
  • More than 25 fps @ binning 2
  • Peltier-cooled
  • Fiber-optically coupled (tapered)
  • 14 bit
  • No water cooling or external shutters necessary
Summary
The fast, high-resolution KeenviewG2 is mounted under the TEM column at the on-axis position. Installing the KeenviewG2 is straightforward because neither water cooling nor external shutter is necessary. Data is transferred to the PC via the FireWireTM interface. The high lateral and dynamic resolution make the KeenviewG2 an obvious choice for acquiring high-resolution images for both biomedical and materials science applications. The total integration of the camera into iTEM, the TEM imaging platform, means that the acquired images can be processed, evaluated, archived and documented – immediately and at the greatest convenience.
Description Specifications
The KeenViewG2 is the 2nd generation of Olympus Soft Imaging Solutions high resolution and high read-out speed, bottom-mounted TEM CCD camera system. This fiber-optically coupled 14-bit camera sets benchmarks with its finely balanced blend of electronics, optics, design and functionality. The KeenViewG2 is equally attractive and practical for users in the bio-medical, life sciences, materials science and semiconductor fields. The KeenViewG2 is another solution in the Olympus Soft Imaging Solutions vision of “Electron Microscopy made simple”.
The fast, high-resolution KeenViewG2 is mounted under the TEM column at the on-axis position. Installing the KeenViewG2 is straightforward because neither water cooling nor external shutter is necessary. Data is transferred to the PC via the FireWireTM interface. The high lateral and dynamic resolution make the KeenViewG2 an obvious choice for acquiring high-resolution images for both biomedical and materials science applications. The total integration of the camera into iTEM, the TEM imaging platform, means that the acquired images can be processed, evaluated, archived and documented – immediately and at the greatest convenience.
CCD Chip
The highly sensitive 2/3” interline CCD image sensor used in the KeenViewG2 provides a resolution of 1376 x 1032 pixels at 14-bit dynamic range. The pixel size of the CCD chip is 6.45 x 6.45 μm2 (effectively 23.5 x 23.5 μm2). Minimizing power consumption has made active camera cooling superfluous.
Binning
Several binning modes are supported by KeenViewG2. The users can select between modes of 2x, 4x and 8x binning. This means sensitivity can be increased even more.
High frame rates
The KeenViewG2 supports frame rates of more than 25 images per second at binning 2 and of 15 images per second at full resolution. This high frame rate is ideal for locating suitable sample segments directly onscreen.
CCD Cooling
Noise is generally introduced if the CCD chip is not cooled to a sufficiently low tem-perature, known as “dark current”. This thermal noise is not a problem with the KeenViewG2 due to a sophisticated Peltier-cooling system which regulates the tem¬perature of the CCD chip at 10° C (@ 25° C ambient temperature).
Variable exposure times
The KeenViewG2 offers exposure times ranging from 100 μs to 160 s. This is a fundamental prerequisite for being able to acquire images of either intense illumination or of very low intensity.
Fiber optical coupling
The KeenViewG2 camera system couples the electron-sensitive layer (scintillator) with the CCD chip using unique fiber optics (tapered). This innovative approach provides the user with a welcome price/performance advantage. In conjunction with the highly sensitive CCD chip and the optimized scintillator, this ensures high sensitivity and efficiency.
Optimized scintillators
The KeenViewG2 uses a dedicated high-sensitivity phosphor scintillator. In order to match customers’ individual demands, various scintillators can be customized for several accelerating voltages and applications.
Anti-Blooming / Diffraction
The CCD chip architecture guarantees high anti-blooming. Individual pixels are clearly distinguished. In conjunction with the extremely short exposure times, this optimizes the acquisition of diffraction images.
Housing
Installing the KeenViewG2 is simple and straightforward. No additional water cooling and no other modifications at the TEM are necessary to set up the camera system. X-ray safety is guaranteed by the camera housing for up to 300 KeV.
Real-time functions
Integration of the KeenViewG2 with iTEM, Olympus Soft Imaging Solutions TEM imaging platform, ensures Real-Time shading correction, intensity histograms, auto contrast adjustment and Real-Time Fast Fourier Transformations during image acquisition.
Integration
Furthermore, the integration of the camera with iTEM provides professional functions such as autofocus, labeling, processing, archiving, analyzing and report generation. Photographic quality printouts can be obtained virtually in seconds after acquisition – without the darkroom.
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