发明名称 |
Medical radiographic equipment |
摘要 |
<p>A variable area stop is associated with the film holder, the screened areas being covered with plates of X ray absorbent material which define a window within the conical X ray beam and can be introduced before exposure starts and remain in position throughout the exposure. An image intensifier forms a part of the monitoring system used in an automatic exposure control loop.</p> |
申请公布号 |
DE1956070(A1) |
申请公布日期 |
1971.05.13 |
申请号 |
DE19691956070 |
申请日期 |
1969.11.07 |
申请人 |
SIEMENS AG |
发明人 |
GRASSMANN,PETER,DIPL.-PHYS.DR. |
分类号 |
H05G1/38;H05G1/64 |
主分类号 |
H05G1/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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