发明名称 |
Pressure-electrical signal conversion means |
摘要 |
The present invention is a pressure-electrical signal conversion means comprising a diaphragm assembly which is moved in accordance with the difference of pressure between two compartments therein, illumination means able to direct light in a band onto a photosensitive unit which includes two elements so disposed that when any particular band of the photosensitive area is illuminated the illuminated area of one element is greater than that of the other, this photosensitive element produces an output proportional to the relative size of the illuminated areas of these elements, the photosensitive unit and illumination means being movable relative to one another in proportion to the movement of the diaphragm.
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申请公布号 |
US4122337(A) |
申请公布日期 |
1978.10.24 |
申请号 |
US19770771675 |
申请日期 |
1977.02.24 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
OKUDA, ISAMU;HORII, HIROSHI;MORI, KEIJIRO |
分类号 |
G01L9/00;G05D16/20;H04R23/00;(IPC1-7):G01D5/34 |
主分类号 |
G01L9/00 |
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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