Micro focus x-ray tube for examining printed circuit board in electronic industry, has cooling unit for supplying flow of cooling agent e.g. air, to target over cooling agent channel, and component of tube connected with target

摘要

The tube has a cooling unit (22) for supplying flow of cooling agent e.g. air, to a target (16) over a cooling agent channel. A component of the tube is connected with the target, where the channel is formed sectionally in the target and/or the component of the tube. The channel is directed sectional to the target in such a manner that the cooling agent arrives directly in contact with the target during operation of the tube, where the channel exhibits a cooling agent supply channel (24) and a cooling agent discharge channel (26). The target is arranged at a retainer (14).