Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1989-05-24
1991-03-26
Arnold, Bruce Y.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
350 66, 350 691, 350 371, 35016212, 250230, 2502011, 356 71, G02B 2610, G02B 2742
Patent
active
050023489
ABSTRACT:
The present invention relates to a scanning beam optical processing system which combines Fourier optics with the ability to scan a stationary object plane. A scanning system moves a beam of light over a stationary medium and directs the light to a beam deflector. A descanning position control system re-establishes the beam deflected from the beam deflector along a stationary optical path for optical processing of information obtained from the medium. Hyperbolic lenses are used in the scanning system. The descanning position control system includes a controller comprising a detector for sensing a portion of the beam deflected from the beam deflector and for generating a signal representative of the position thereof and a differential amplifier for comparing the signal representative of the position of the deflected beam of light with a signal representative of the predetermined fixed reference axis for generating a beam deflector drive signal in response thereto.
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Arnold Bruce Y.
Ben Loha
E. I. Du Pont de Nemours and Company
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