Two-dimensional image pickup apparatus

DETAILED DESCRIPTION In view of the above described circumstances, it is therefore an object of the present invention to provide a small, down-sized image pickup apparatus that is free from the above identified problems.
Another object of the present invention is to provide a two-dimensional image pickup apparatus adapted to stably reading information without significantly increasing the internal noise and reducing the S/N ratio if heat is generated by the electronic parts during the operation of the apparatus.
Still another object of the present invention is to provide an image pickup apparatus adapted to obtaining transmitted X-ray images for diagnosis and analysis.
Still another object of the present invention is to provide a low cost cassette-type image pickup apparatus that is small and lightweight and can be carried with ease.
According to an aspect of the invention, the above objects of the invention are achieved by providing a two-dimensional image pickup apparatus comprising two-dimensional photoelectric converters arranged on a substrate, a base member for supporting the substrate, electronic parts for processing the electric signals of said photoelectric converters and an apparatus cabinet containing the above components, said base member being formed by a metal-based printed circuit board, said electronic parts being mounted on said base member.
According to another aspect of the invention, in an image pickup apparatus according to the invention, said base member and part or all of said apparatus cabinet are formed by a metal-based printed circuit board and said electronic parts are mounted on said printed circuit board.