Abstract:
Invenţia se referă la un dispozitiv optoelectronic pentru atenuarea electrooptică a energiei laser în cadrul unui microscop chirurgical oftalmic cu laser, în mod continuu şi fără a folosi piese în mişcare. Dispozitivul conform invenţiei este alcătuit dintr-un modulator electrooptic (MEO), un fotodetector (FD) şi un sistem (EC) electronic de comandă, şi este destinat a fi montat în interiorul unui biomicroscop oftalmic cu laser, între laser (L) şi luneta de expandare (LE), astfel încât un fascicul laser polarizat emis de laser (L) trece prin modulatorul electrooptic (MEO), unde este atenuat la o valoare reglată de un operator, cu ajutorul sistemului (EC) electronic de comandă, iar fotodetectorul (FD) va măsura nivelul energiei fasciculului atenuat, transmiţând sistemului (EC) electronic de comandă valoarea măsurată, după care fasciculul atenuat îşi continuă parcursul prin microscopul chirurgical oftalmic, trecând prin luneta de expandare (LE), fiind apoi focalizat la locul operaţiei, cu ajutorul unui obiectiv (OBM).
Abstract:
A neutral particle generator is disclosed that includes a container which holds a material in at least a partial plasma state, for example a Deuterium plasma. In one form, a first cathode is positioned within the container and produces a first beam of neutral particles directed away from the first cathode. Optionally, a second cathode is also positioned within the container and produces a second beam of neutral particles directed away from the second cathode, and/or a target is also positioned within the container. In one form, the first cathode and the second cathode are linearly opposed so that the first beam interacts/collides with the second beam resulting in fusion reactions of at least some of the neutral particles, which thereby results in generation of emitted neutrons.
Abstract:
A CONVERGENCE MAGNET ASSEMBLY FOR A CATHODE RAY TUBE COMPRISING THREE PAIRS OF MAGNET RINGS POLARIZED RESPECTIVELY WITH P-POLE, 4-POLE AND 6-POLE, A PLURALITY OF SPACERS, EACH DISPOSED BETWEEN ADJACENT ONES OF THE MAGNET RING PAIRS FOR PREVENTING A ROTATION INTERFERENCE THEREBETWEEN, AND A NON- MAGNETIC HOLDER FOR HOLDING THE MAGNET RINGS AND SPACERS, WHEREIN THE CONVERGENCE MAGNET ASSEMBLY FURTHER COMPRISES A SEPARATE 6-POLE MAGNET FORMED IN A SPECIFIC ONE OF THE SPACERS FOR INDUCING ONE OR BOTH SIDE ONES OF RED, GREEN AND BLUE BEAMS TO BE DISPLACED AT A MINIMUM MAGNETIC FIELD STATE OF THE MAGNET RINGS TO INCREASE A CENTER CONVERGENCE VARIANCE. ACCORDING TO THE PRESENT INVENTION, THE THREE BEAMS CAN READILY BE STATICALLY CONVERGED IN A NO-ERROR TUBE. FURTHER,THE CONVERGENCE MAGNET ASSEMBLY IS CAPABLE OF BEING USEFULLY APPLIED TO EVEN ITC AUTOMATION AND BEING MANUFACTURED WITHOUT SETTING A DIFFERENCE BETWEEN MAGNETIC FLUX DENSITIES AND DISCRIMINATING MAGNET RINGS AT BEAM INLET AND OUTLET SIDES FROM EACH OTHER.(FIGURE 4)
Abstract:
An electron beam controlled switch employing a radial geometry and a Wire-Ion Plasma-Electron gun (WIP E-gun) as an electron source is disclosed. The switch comprises an inner cylinder that serves as the WIP E-gun cathode, a cylindrical grid that serves as the WIP E-gun anode, an array of fine wire anodes disposed in the WIP E-gun ionization chamber, a foil support cylinder to support the foil windows which also serve as the switch anode, and an outer cylinder which also serves as the switch cathode. The WIP E-gun and ionization chamber is gas filled at low pressure, while the switch cavity is filled with a high pressure gas. A voltage pulse is applied to the wire anodes to ionize the gas in the ionization chamber. The ions are extracted through the chamber grid and accelerated through a high voltage to bombard the E-gun cathode. The electrons emitted from the ion bombardment are accelerated outwardly through the high voltage, penetrate through the foil windows and into the pressurized gas in the switch cavity. The high energy electrons ionize the gas between the switch anode and cathode, thereby turning "ON" the switch. In the absence of the electron beam, the switch gas deionizes and switch conduction is quickly extinguished.
Abstract:
An in-line CRT features a static convergence means. It has at most two permanent magnets in or around the tube neck before the deflection coils.
Abstract:
An in-line CRT features a static convergence means. It has at most two permanent magnets in or around the tube neck before the deflection coils.
Abstract:
The invention relates to an apparatus for generating a plurality of charged particle beamlets, comprising a charged particle source for generating a diverging charged particle beam, a converging means for refracting said diverging charged particle beam and a lens array comprising a plurality of lenses, wherein said lens array is located between said charged particle source and said converging means. In this way, it is possible to reduce aberrations of the converging means.
Abstract:
A neutral particle generator is disclosed that includes a container which holds a material in at least a partial plasma state, for example a Deuterium plasma. In one form, a first cathode is positioned within the container and produces a first beam of neutral particles directed away from the first cathode. Optionally, a second cathode is also positioned within the container and produces a second beam of neutral particles directed away from the second cathode, and/or a target is also positioned within the container. In one form, the first cathode and the second cathode are linearly opposed so that the first beam interacts/collides with the second beam resulting in fusion reactions of at least some of the neutral particles, which thereby results in generation of emitted neutrons.
Abstract:
A system for joining at least two beams of charged particles that includes directing a first beam along a first axis into a field. A second beam is directed along a second axis into the field. The first and second beams are turned, by interaction between the field and the first and second beams, into a third beam directed along a third axis.