Stereo Imaging Miniature Endoscope Bae, Y; Manohara, H; White, V E ...
NASA Tech Briefs,
06/2011, Letnik:
35, Številka:
6
Magazine Article, Trade Publication Article
Stereo imaging requires two different perspectives of the same object and, traditionally, a pair of side-by-side cameras would be used but are not feasible for something as tiny as a less than ...4-mm-diameter endoscope that could be used for minimally invasive surgeries or geo-exploration through tiny fissures or bores. The proposed solution here is to employ a single lens, and a pair of conjugated, multiple-bandpass filters (CMBFs) to separate stereo images. When a CMBF is placed in front of each of the stereo channels, only one wavelength of the visible spectrum that falls within the passbands of the CMBF is transmitted through at a time when illuminated. Because the passbands are conjugated, only one of the two channels will see a particular wavelength. These time-multiplexed images are then mixed and reconstructed to display as stereo images.
New results on microsecond electron beam generation on the U-3 accelerator for plasma heating experiments at the GOL-3 device are presented. The electron beam is generated in the vacuum diode and the ...plasma filled diode and 20-fold focused in a mirror magnetic field. The energy spectrum of beam electrons was measured by magnetic analyzer and the broadening of spectrum width was observed in the experiments on dense (n~5.10 15 cm -3 ) plasma heating. The annular structure of the beam in the beginning of pulse was detected and possible reasons are discussed. First results of experiments on beam generation in the plasma filled diode are presented.
PDF
