发明名称 |
Power meter with background subtraction |
摘要 |
A technique for performing background suppression in photodiode detectors is disclosed. A first detector measures the light emitted by the source to be measured and the background light, while a second detector simultaneously measures the background light only. The value measured by the second detector is subtracted from the value measured by the first detector, and the difference represents the portion of the first detector's measured value which is attributable to the source to be measured.
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申请公布号 |
US5376783(A) |
申请公布日期 |
1994.12.27 |
申请号 |
US19940231884 |
申请日期 |
1994.04.22 |
申请人 |
OPHIR OPTRONICS LTD. |
发明人 |
VECHT, JACOB J.;HALPERIN, BEN-ZION;GREENFIELD, EPHRAIM |
分类号 |
G01J1/42;G01J1/44;(IPC1-7):H01J40/14 |
主分类号 |
G01J1/42 |
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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