Photosensitive charge coupled accumulation device and lidar inco

Details Photosensitive charge coupled accumulation device and lidar inco Photosensitive charge coupled accumulation device and lidar inco

1998-10-01

2000-07-04

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 504, 348311, 348317, H04N 315

Patent

active

060846593

ABSTRACT:
The CCD device is suitable for use in a lidar. It has an image zone constituted by a matrix of M lines and N columns of photosensitive sites for receiving a light signal and generating charges, a first memory zone constituted by a matrix of P lines and N columns of non-photosensitive sites, a read-out register having a single line of N sites, and a second memory zone having P lines of N sites, apt to receive in parallel charges contained in the N sites of the read-out register. The first memory zone has a first line of sites apt to receive and to sum charges generated in a respective column of the image zone at the end of each of successive acquisition periods. The second memory zone stores and transfers charges to N sites of a same line of the image zone or the first memory zone whereby accumulating, in each line of the first memory zone, charges accumulated during an observation period and resulting from a plurality of successive summations. At the end of each acquisition period, a timer transfers at high speed the charges present in all sites of all columns of the image zone along the columns to respective sites of the line which achieves summation.

REFERENCES:
patent: 4727259 (1988-02-01), Halvis
patent: 4881809 (1989-11-01), Thierry
patent: 5056914 (1991-10-01), Kollodge
patent: 5166800 (1992-11-01), Mori et al.
patent: 5220164 (1993-06-01), Lieber et al.

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