Optical imaging system with a plurality of image planes

G - Physics – 01 – C

Patent

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Details

G01C 11/02 (2006.01) H04N 9/09 (2006.01) H04N 5/335 (2006.01) H04N 3/15 (2006.01)

Patent

CA 2074127

In this optical imaging system the same object section is imaged by optical means on three spatially separate image planes. Surface sensors A, B, C of identical width which in turn comprise optoelectronic sensor elements arranged in the manner of a matrix are arranged in the three image planes at a distance from one another in parallel rows and are offset relative to one another from one row to the other. The three grids of surface sensors which are accordingly formed are offset relative to one another from one image plane to the other in such a way that the object section is detected without gaps by means of the surface sensors A, B and C during optical superposition. Thus, large surface area pictures with high resolution can be taken with the use of conventional surface sensors, e.g. of the CCD type. Due to the special arrangement of the surface sensors, three image planes with the corresponding optical means, e.g. three lenses or less than three lenses and additional beam splitter systems such as semipermeable mirrors or prisms, are sufficient.

Dans un système imageur optique, la même partie d'objet est imagée par des moyens optiques sur trois plans image spatialement distincts. Des capteurs de surface A, B et C de largeur identique, comprenant eux-mêmes des éléments optoélectroniques sensibles disposés en forme de matrice, sont placés dans les trois plans image à une certaine distance les uns des autres, en rangées parallèles, et sont décalés les uns par rapport aux autres d'une rangée à l'autre. Les trois grilles de capteurs de surface ainsi formées sont décalées les unes par rapport aux autres d'un plan image à l'autre de façon que la partie d'objet soit détectée sans discontinuité au moyen des capteurs de surface A, B et C pendant la superposition optique. Ainsi, de grandes images haute résolution peuvent être prises à l'aide de capteurs de surface classique, p. ex. de type DTC. Étant donné le montage particulier des capteurs de surface, trois plans image avec les moyens optiques correspondants, p. ex. trois lentilles ou moins et des systèmes de séparation de faisceau supplémentaires tels que prismes ou miroirs semi-perméables, sont suffisants.

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