发明名称 |
Automatic exposure device for a panoramic X-ray photographing device |
摘要 |
An automatic exposure device for obtaining X-ray pictures with superior quality and constant contrast by feedback of both tube voltage and tube current according to the residual X-ray dose which penetrates the body of a patient. This device is further characterized in that the feedback control is compensatingly done according to the changes in the tube voltage and tube current caused by fluctuations of the power supply.
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申请公布号 |
US4641331(A) |
申请公布日期 |
1987.02.03 |
申请号 |
US19840636689 |
申请日期 |
1984.08.01 |
申请人 |
KABUSHIKI KAISHA MORITA SEISAKUSHO |
发明人 |
MAKINO, TAKAO;OSADA, SHINICHI |
分类号 |
G01N23/04;H05G1/36;H05G1/46;H05G1/60;H05G1/64;(IPC1-7):H05G1/30;H05G1/32 |
主分类号 |
G01N23/04 |
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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