Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Reexamination Certificate
2008-12-18
2011-11-29
Porta, David (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
Reexamination Certificate
active
08067741
ABSTRACT:
The invention provides a gamma detection device, a collimator for use therein, and use of such a collimator or device in imaging an object. The invention is directed to pinhole imaging with high energy photons, such as 511 keV photons. In order to achieve sufficiently low pinhole knife edge penetration, the collimator uses a plurality of focused clusters of pinholes, each with a smaller opening angle, and arranged such that all the combined fields of view of the individual pinholes in all clusters provide a large central field of view with still compact dimensions of the detection device. This is made possible since the field of view of a single cluster is divided up into a number of individual fields of view.
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Birch & Stewart Kolasch & Birch, LLP
Lee Shun
Milabs B.V.
Porta David
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