X-ray imaging apparatus
AssigneeKabushiki Kaisha Toshiba
InventorsTerutoshi Fujita, Katsutoshi Itoh
Life of this patent
Estimating the term…
Abstract
An X-ray imaging apparatus 1 includes an imaging device 31. Imaging device 31 has a lens 33, an imaging device 37, a circuit for driving the imaging device, and a board 53, 57 having a circuit used for processing video signals that are produced from the imaging device. These structural elements of the imaging device 31 are integrally rotatable as one body. Even when an X-ray image intensifier and an X-ray generator are revolved around the object, an output image formed on the output surface can be displayed as an upright image, if required. In addition, only the structural component by which the lens and the board 53 are connected together requires a certain level of precision, so that the cost for preparing the structural components of the apparatus is low as a whole.
Claims8
An X-ray imaging apparatus comprising:
- an X-ray image intensifier for converting an X-ray image into a completely-round output visible-light image;
- an optical lens assembly for focusing the output visible-light image on a predetermined position;
- a solid-state imaging device arranged at the predetermined position where the output visible-light image is focused by the optical lens assembly;
- a signal processing circuit board for driving the solid-state imaging device and processing output image signals produced therefrom;
- a support frame, mechanically fixed to the X-ray image intensifier, for mechanically supporting the optical lens assembly, the solid-state imaging device and the signal processing device circuit board;
- and a revolving means for revolving the solid-state imaging device relative to the X-ray image intensifier such that an optical center axis coincides with a center of revolution of the solid-state imaging device,
- said signal processing circuit board being arranged such that the optical center axis extends therethrough, and said solid-state imaging device being fixed to the signal processing circuit board and having a rectangular image-receiving surface,
- said optical lens assembly being mounted on the signal processing circuit board, such that the optical lens assembly and the signal processing circuit board constitute one mechanical body,
- said optical lens assembly being provided in one of a state wherein said optical lens assembly is directly mounted on the signal processing circuit board and a state wherein another member is interposed between said optical lens assembly and the signal processing circuit board,
- said support frame holding a rotating motor fixed thereto, and said motor rotating the solid-state imaging device, the signal processing circuit board and the optical lens assembly as one body with relative to the support frame,
- a plurality of slip rings being arranged close to the solid-state imaging device in a concentric manner and being rotatable together with the solid-state imaging device, and electric power and output image signals being supplied to the solid-state imaging device and the signal processing circuit board by way of the slip rings.
Dependencies are inferred from the claim text.