The MegaViewG2 is the 2nd generation of Olympus Soft Imaging Solutions high resolution and high speed read-out side-mounted TEM CCD camera system. The MegaViewG2 is part of our G2 SERIES, our new TEM camera line-up – for best in speed, sensitivity and dynamic range. This lens-optically coupled 14-bit camera offers a well-comprehensive concept composed of the latest in electronics, optics, design and functionality. The MegaViewG2 is equally convincing users in the bio-medical, life sciences, and materials science.
The MegaViewG2 consists of a high yield phosphor screen, a prism to reflect the image onto the CCD sensor, as well as housing and flange specific to almost all TEM. The rigid coupled phosphor screen-lens-scintillator-CCD combination provides optimum conditions for an artifact-free shading correction. This single port design is important for obtaining reproducible shading images. The positioning of the phosphor screen inside the TEM is pneumatically driven. X-Ray safety is guaranteed up to 200 KeV by the camera housing.
The MegaViewG2 camera system is equipped with a specially designed objective lens. In conjunction with the CCD chip and the even more efficient scintillator the tuned up optics of the MegaViewG2 system ensures great sensitivity and light efficiency, as well as a high signal-to-noise ratio.
Consummate CCD sensor
The highly sensitive 2/3” interline CCD image sensor used in the MegaViewG2 provides effective pixels of 1392 x 1040 pixel. The resolution of the camera is 1376 x 1032 pixels with 14-bit dynamic range (16384 grey values). The pixel size of the CCD chip is 6.45 x 6.45 µm² (effectively 20 x 20 µm²). The CCD sensor possesses uniquely high quantum efficiency, which in combination with reduced dark current results and cooling down to 10° C (25° C ambient temperature) in a tremendous increase of the total quantum efficiency (DQE) of the camera system.
Various imaging modes
Several binning mode are supported by MegaViewG2. The users can select between modes of 1x, 2x, 4x and 8x binning. This means sensitivity can be increased even more. The interline transfer chip uses an electronic shutter which neatly sidesteps any possible mechanical problems. The MegaViewG2 offers exposure times ranging from 100 µs to 160 seconds. This is a fundamental prerequisite for being able to acquire images of either intense illumination or of very low intensity. The MegaViewG2 supports frame rates of more than 25 images per seconds at 2x binning and of 15 images per seconds at full resolution. This high frame rate is ideal for locating suitable sample segments directly onscreen or adjusting the microscope parameters. At any resolution the camera provides excellent dynamic range and sensitivity.