发明名称 |
Photodetector having cascaded photoelements. |
摘要 |
<p>A photodetection system includes first and second photodetectors (10, 12), each having an anode and a cathode. The anode (10A) of one (10) of the photodetectors is ohmically connected to the cathode (12A) of the other (12) photodetectors. The photodetectors are suitably electrically biased and disposed for receiving one or two light beams. Output circuit means (22) are electrically connected to the anode and cathode junction between the two photodiodes for providing an output electrical signal having low or no common mode noise. A preferred embodiment of the invention using a single semiconductor chip for the entire circuit arrangement is also illustrated.</p> |
申请公布号 |
EP0304560(A2) |
申请公布日期 |
1989.03.01 |
申请号 |
EP19880108682 |
申请日期 |
1988.05.31 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
MADRID, BENNY ARCHIE |
分类号 |
G01J1/44;G11B7/13;G11B11/10;G11B11/105;H03F3/08 |
主分类号 |
G01J1/44 |
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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