公开(公告)号：WO2011067566A1

公开(公告)日：2011-06-09

申请号：PCT/GB2010/002216

申请日：2010-12-03

Applicant: THE UNIVERSITY OF NOTTINGHAM ,  PITTER, Mark ,  SOMEKH, Michael ,  JOHNSTON, Nicholas ,  LIGHT, Roger

Inventor： PITTER, Mark ,  SOMEKH, Michael ,  JOHNSTON, Nicholas ,  LIGHT, Roger

IPC: G01J1/46 ,  H01L31/062

CPC classification number: G01J1/46 ,  H01L31/02005 ,  H01L31/102 ,  H04N5/3559

Abstract: A photo diode (12) is connected across a power supply (16,18) by a switch (19). A variable capacitance (14) is connected across the photo diode (12), through a switch (22). Accordingly, the capacitance (14) can be charged by closing the switches (19,22). Thereafter, the switch (19) is open, the photo diode (12) is exposed to illumination (24) and the switch (22) is closed for a measurement period. The degree to which the capacitance (14) discharges through the photo diode (12), during the measurement period, is a measure of the illumination intensity at the photo diode (12) and is output as a voltage at (26). The capacitance (14) is varied so that conversion gain of the apparatus can be increased as illumination intensity reduces, improving the contrast and signal-to-noise attributes of the output signal.

Abstract translation: 光电二极管（12）通过开关（19）跨越电源（16,18）连接。 可变电容（14）通过开关（22）跨越光电二极管（12）连接。 因此，可以通过闭合开关（19,22）来对电容（14）进行充电。 此后，开关（19）断开，光电二极管（12）暴露于照明（24），并且开关（22）在测量周期内闭合。 在测量周期期间，电容（14）通过光电二极管（12）放电的程度是光电二极管（12）处的照明强度的度量，并且在（26）处作为电压输出。 改变电容（14），使得随着照射强度的降低，可以提高装置的转换增益，改善输出信号的对比度和信噪比属性。

公开(公告)号：WO2013079960A1

公开(公告)日：2013-06-06

申请号：PCT/GB2012/052965

申请日：2012-11-30

Applicant: THE UNIVERSITY OF NOTTINGHAM

Inventor： SHARPLES, Stephen ,  LIGHT, Roger

IPC: G01N21/17 ,  G01H9/00 ,  H01L27/146

CPC classification number: G01N21/1702 ,  G01H9/00 ,  G01N2201/0612 ,  G01N2201/0675 ,  H01L27/14609

Abstract: An optical detector comprises a plurality of pixels, each pixel comprising a photodiode operable to detect light incident on that pixel and to generate a signal indicative of an intensity of that light. The plurality of pixels comprises a plurality of pixel pairs, and for each pixel pair, in a configuration mode, the detector is arranged to compare the signal generated by a first pixel of the pair with the signal generated by a second pixel of the pair. A method of optical detection is also described, as is a system incorporating the described optical detector.

Abstract translation: 光学检测器包括多个像素，每个像素包括可操作以检测入射在该像素上的光并产生指示该光强度的信号的光电二极管。 多个像素包括多个像素对，并且对于每个像素对，在配置模式中，检测器被布置为将由该对的第一像素生成的信号与由该对的第二像素生成的信号进行比较。 还描述了光学检测的方法，并且还包括结合所描述的光学检测器的系统。

公开(公告)号：EP2786123A1

公开(公告)日：2014-10-08

申请号：EP12821119.0

申请日：2012-11-30

Applicant: The University of Nottingham

Inventor： SHARPLES, Stephen ,  LIGHT, Roger

IPC: G01N21/17 ,  G01H9/00 ,  H01L27/146

CPC classification number: G01N21/1702 ,  G01H9/00 ,  G01N2201/0612 ,  G01N2201/0675 ,  H01L27/14609

Abstract: An optical detector comprises a plurality of pixels, each pixel comprising a photodiode operable to detect light incident on that pixel and to generate a signal indicative of an intensity of that light. The plurality of pixels comprises a plurality of pixel pairs, and for each pixel pair, in a configuration mode, the detector is arranged to compare the signal generated by a first pixel of the pair with the signal generated by a second pixel of the pair. A method of optical detection is also described, as is a system incorporating the described optical detector.

Abstract translation: 光学检测器包括多个像素，每个像素包括光电二极管，其可操作以检测入射在该像素上的光并产生指示该光强度的信号。 多个像素包括多个像素对，并且对于每个像素对，在配置模式下，检测器被布置为将由该对的第一像素生成的信号与由该对的第二像素生成的信号进行比较。 还描述了光学检测的方法，以及包含所描述的光学检测器的系统。