Patent Number: 
Section: claims

1. A multipurpose device for transmitting radiation from a source to an object, comprising two reflectors each shaped as a truncated segment of a curved surface and both arranged to produce a combined focal zone, a distributed radiation source positioned in the aperture plane of at least one of the reflectors or in one of the focal areas of each reflector, and an object placed in the combined focal area of both reflectors. 2. A multipurpose device as claimed in claim 1, wherein the curved surface of each reflector is a spherical or cylindrical surface, and the distributed radiation source is placed in the aperture plane of at least one of the reflectors. 3. A multipurpose device as claimed in claim 1, wherein the reflectors are arranged opposite one another to produce a combined focal area. 4. A multipurpose device as claimed in claim 1, wherein the reflectors are arranged at an angle to one another to produce a combined focal area. 5. A multipurpose device as claimed in claim 1, further provided with at least one pair of spherical or cylindrical reflectors in a plane normal to the plane of the first pair of antenna reflectors. 6. A multipurpose device as claimed in claim 1, wherein the curved surface of the reflectors comprises at least a pair of elliptical cylinders positioned opposite one another to produce a single combined focal area for an object to be placed therein, distributed sources being arranged in the two other focal areas. 7. A multipurpose device as claimed in claim 5, wherein one elliptical reflector only is used in at least two planes, one distributed source being placed in the focal area of each reflector, and an object being placed in the combined focal area of said reflectors.