Patent ID: 6380541
Filing Date: 2002-04-30
Classification: G01T

Abstract:
Device for localizing radiation sources contained in a given area comprising a pinhole chamber situated in said given area, a wall surrounding the pinhole chamber for shielding said pinhole chamber from radiation with said pinhole chamber having an optical axis and said wall having a pinhole and a movable section in which the pinhole is located, closing means for closing off the pinhole in the pinhole chamber, said closing means being transparent to source radiation, image forming means facing the pinhole in order to obtain firstly an image of the radiation sources due to their radiation and secondly an image of the area due to visible light from the area upon removing the closing means from the pinhole, and an optical system connected to the movable section with said movable section being adjustable for changing the relative positions of said optical system and said pinhole with respect to said pinhole chamber such that the position of the optical system and the position of the pinhole can be interchangeably switched from a first position in which the pinhole is aligned coaxially with said optical axis to a second position in which said optical system is aligned coaxially with said optical axis so that the image of the area and sources can be taken using either the pinhole or optical system, said optical system being adapted to produce sharp images in visible light over the required field depth.