CS226705B2 - Quick motion picture camera for x-ray apparatuses - Google Patents

Description

22B 705

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fast scanning camera for X-ray apparatus, particularly for films of 100 x 100 mm or 70 x 70 mm. In modern medical examinations, X-rays are no longer used for conventional X-rays, but the physician examines the X-ray image directly on the television screen using the image converter system. In practice, it is necessary to fix the different phases of the X-raygram at least one image. To this end, the image inverter is supplemented with a video splitter and a dot-type camera, the so-called "spotlight". The image splitter is transmitted to the screen either by the optical image-scan or by the image from a photo camera. At any backlighting stage, a snapshot is taken using the switch knob.

In addition to taking individual shots, you need to take a photo-graphic device. he took a so-called frame during the tour, which is also necessary for a simple diagnosis. A patient card is inserted into the point camera to take the name, other data, and the number of the individual image. Single images are photographed using a 70 x 70 mm dia-positive image resp. for a roll film of 100 or 70 mm. The slides are collected into the camera reservoir 25 43 100kSj depending on the type of film used. In the case of X-ray imaging, slides are used rather than roll films

The manipulation of slides with different instruments is performed in a substantially identical manner. From the negative film containing reservoir, the film is removed and transferred to a flush display. The film is then placed in the focus plane of the objective lens where it is fixed and exposed, whereupon the illuminated film is removed from the focal plane and shifted into the light film reservoir. .

The main disadvantage of the known cameras is that it is lengthy for the camera, the shifting mechanisms are complicated, especially when more frames are to be produced in one second.

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the aforementioned drawbacks, to improve film supply and to simplify both the camera design and its control.

The essence of the rapid sensing camera according to the invention, which is formed by an opaque casing, an objective lens by a projection mirror, a drive motor, a shifting mechanism, a mechanism for projection and counting of patient cards and electrical equipment, is in this. that in the plane of the optical axis of the image there is arranged therein a reservoir for accumulating and moving non-illuminated films and for moving them in the plane of focus of the objective lens, the reservoir being provided with a spring for holding and moving the films in succession, with underneath the unlit film reservoir The cartridge for receiving the illuminated films is provided and the cartridges are located in the aperture for adjusting the focus of the lens of the objective lens. The reservoir serves not only here - 3 - 22B 705 for the accumulation of non-illuminated films, but forms a functional part of the scanning machine. Preferably, the individual films are arranged in the cassette with the front and the back closed.

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 camera-film layout,

FIG. 2 detail of the storage of one film in a frame

According to FIG. 1, the apparatus is arranged inside the opaque holder 9. It includes an objective lens 10, a projection mirror 11, a drive motor 12, a slide mechanism 6, a mechanism 14 for projecting and counting patient cards, and an opening 15 for inserting a film magazine. Other electrical accessories 17 such as wiring, switches, magnets, bulbs, etc. are in the instrument.

The non-illuminated films 2 are arranged one after the other in a reservoir inside the camera in such a way that the first film-film beam is arranged immediately in the plane of the lens lens 4 and is ready for shooting after opening the reservoir diaphragm8

The entire bundle of non-illuminated films is pressed by the spring 5 into the plane of illumination. Once the film is brightened, it is moved downward by the mechanism 6 and inserted into another tray 7 which contains the lighted films. This container 7 is located immediately next to the first container 2t which contains non-

226 70S lighted movies. The two cartridges are made of virtually one piece, have the same front and side surfaces and are separated by a partition wall.

Instead of being released by the illuminated film, the predetermined film beam is moved by the spring 5 so that the following unlit image is shifted into the focal plane. In the illuminated film container 7, the entire bundle is pressed by a spring 3.

A diaphragm 8 is arranged on the front surface of the container to protect the film. on the other hand, allows exposure inside the camera. This shutter 8 is still open and closes when the container is removed.

In order to avoid illumination of not only the first but also the second and third pictures, a film is used in practice, the backside of which is opaque and coated with a soluble emulsion upon development.

X-ray films used so far can be used in this apparatus, but in such a way that each film is inserted tightly, on the face of the open cassette 16, and the thus formed cassette bundle 16 is inserted into the cartridge 2. The cassettes 16 are arranged in rows in succession. If the films are placed in the cassettes in such a manner, the film displacement is facilitated, and since the individual cassettes 16 are separated from each other, it is easier to make the film in the laboratory.

Claims (2)

OF THE INVENTION 228 705 1. A high-speed X-ray imaging camera, especially for 100 x 100 mm or 70 x 70 mm films, consisting of a non-transparent case, an objective lens, a projection mirror, a post-engine, a shift mechanism, a melt and card counting mechanism the patient and the electrical equipment, indicating that a reservoir (2) is arranged in the plane of the optical image axis (13) to accumulate and move the non-illuminated films (1) and to move them in the lens focus plane (4), which reservoir (2) is provided with a spring for holding and moving the films one after the other, wherein a reservoir (7) for receiving light-emitting films is provided below the non-illuminated film reservoir (2) and both reservoirs (2,7) are located in the opening (15) for adjusting the reservoirs (2, 7) to the lens (4) of the lens. 2. A fast sensing camera according to claim 1, wherein the individual films are arranged in a cassette (16) with an open end face A closed back. «Represents: