Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2005-02-01
2005-02-01
Le, Que T. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C250S363040
Reexamination Certificate
active
06849844
ABSTRACT:
A high resolution, non-scanning system for microscopy and/or tomography whereby a broad non-focused input image transmitted through a medium such the human body is processed, in contrast with a focused scanning beam. A high pass filter provides high sensitivity, and a high magnification feedback loop magnifier having reduced lens aberrations is also provided. A zoom lens focuses the input image such as a tumor at different planes within the medium. Image processing systems for correction via a back-propagation algorithms followed by a two-dimensional (2-D) deflection sensor and a 2-D Demultiplexer is employed to produce separate phase and amplitude image signals that are then mixed and applied to a display yielding three dimensional tomographic images. Novel two demultiplexers for calculation amplitude and phase images are disclosed based on a smart pixelated array, a tunable grating, and a two-probe beam hologram, each beam having two different wavelengths or two different modulations.
REFERENCES:
patent: 6262818 (2001-07-01), Cuche et al.
Le Que T.
Nathans Robert
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