JPH01115732U

JPH01115732U -

Info

Publication number: JPH01115732U
Application number: JP1133988U
Authority: JP
Priority date: 1988-01-29
Filing date: 1988-01-29
Publication date: 1989-08-03

Description

[Brief explanation of the drawing]

第１図ないし第８図はこの考案の実施例に係り
、第１図はマスク機構の概略斜視図、第２図はそ
の平面図、第３図はその側面図、第４図ないし第
７図はそれぞれマスク機構の各種セツト状態を示
す概略平面図、また、第８図ａ〜ｆはそれぞれフ
イルム面の各種分割パターンを示す説明図である
。第９図および第１０図はそれぞれマスク板の別
の実施例を示す平面図、第１１図はＸ線撮影装置
の全体側面図である。また、第１２図は従来のマ
スク機構の概略平面図、第１３図ａ〜ｅは従来の
マスク機構によつて得られるフイルム面分割パタ
ーンの説明図である。１３，１４……マスク板、１５……マスク板ス
ライド駆動機構、１６……横長のＸ線透過窓、１
６ａ……広幅のＸ線透過窓、１６ｂ……小幅のＸ
線透過窓、１７……縦長のＸ線透過窓。 1 to 8 relate to an embodiment of this invention, in which FIG. 1 is a schematic perspective view of the mask mechanism, FIG. 2 is a plan view thereof, FIG. 3 is a side view thereof, and FIGS. 4 to 7. 8 are schematic plan views showing various set states of the mask mechanism, and FIGS. 8a to 8f are explanatory views showing various division patterns on the film surface, respectively. 9 and 10 are plan views showing other embodiments of the mask plate, respectively, and FIG. 11 is an overall side view of the X-ray imaging apparatus. Further, FIG. 12 is a schematic plan view of a conventional mask mechanism, and FIGS. 13 a to 13 e are explanatory diagrams of film surface division patterns obtained by the conventional mask mechanism. 13, 14...mask plate, 15...mask plate slide drive mechanism, 16...horizontal X-ray transmission window, 1
6a...Wide X-ray transmission window, 16b...Small width X
Ray-transmitting window, 17... Vertical X-ray-transmitting window.

Claims

[Scope of utility model registration request]

A mask plate on which a horizontally long X-ray transparent window is formed, a mask plate on which a vertically long X-ray transparent window that can be superimposed on this mask plate, and a mask plate on which a vertically long X-ray transparent window is formed.These two mask plates are slid horizontally in a straight line, In the mask mechanism of an X-ray rapid photography device, which is equipped with a mask plate slide drive mechanism that selectively moves the mask plate between a radiation irradiation zone and a position to which it has been evacuated, a horizontally long X-ray transparent window formed on one mask plate is moved vertically. A mask mechanism for an X-ray rapid photography device, characterized in that it is composed of a plurality of types of transparent windows having different widths in different directions.