Focal plane infrared readout circuit

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6384413
SERIAL NO

09416964

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An infrared imager, such as a spectrometer, includes multiple infrared photodetectors and readout circuits for reading out signals from the photodetectors. Each readout circuit includes a buffered direct injection input circuit including a differential amplifier with active feedback provided through an injection transistor. The differential amplifier includes a pair of input transistors, a pair of cascode transistors and a current mirror load. Photocurrent from a photodetector can be injected onto an integration capacitor in the readout circuit with high injection efficiency at high speed. A high speed, low noise, wide dynamic range linear infrared multiplexer array for reading out infrared detectors with large capacitances can be achieved even when short exposure times are used. The effect of image lag can be reduced.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CALIFORNIA INSTITUTE OF TECHNOLOGYPASADENA, CA2349

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Pain, Bedabrata Los Angeles, CA 60 2253

Cited Art Landscape

Patent Info (Count) # Cites Year
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
* 5515003 Operational amplifier 24 1995
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
EM MICROELECTRONIC-MARIN SA (1)
* 6849845 Low power integrating circuit for use with a photodetector and optical sensor including such an integrating circuit 8 2002
 
Other [Check patent profile for assignment information] (1)
* 2015/0103,218 SOLID-STATE IMAGING DEVICE AND CAMERA SYSTEM 1 2014
 
SHARP KABUSHIKI KAISHA (4)
9123613 Image sensor and display 1 2007
8139055 Combined image sensor and display device 4 2007
* 2010/0238,135 IMAGE SENSOR AND DISPLAY 17 2007
* 2010/0231,562 COMBINED IMAGE SENSOR AND DISPLAY DEVICE 17 2007
 
NIKON CORPORATION (11)
8013927 Solid-state image sensors 1 2006
8013921 Solid-state imaging device, electronic camera 3 2008
* 2009/0219,423 Solid-state imaging device, electronic camera 5 2008
8174088 Solid state imaging device 0 2010
* 2010/0148,296 SOLID STATE IMAGING DEVICE 0 2010
8134622 Imaging device 3 2010
* 2010/0188,539 IMAGING DEVICE 2 2010
8269870 Imaging device for suppressing variations in electric potentials 0 2010
9337231 Solid state image sensor with plural overlapping photoelectric conversion units 0 2010
* 2011/0068,251 SOLID-STATE IMAGE SENSOR 3 2010
8710422 Imaging device 0 2013
 
L-3 COMMUNICATIONS CORPORATION (3)
7268607 Integrating capacitance circuitry for an integrating amplifier and related method 1 2005
* 2006/0125,544 Integrating capacitance circuitry for an integrating amplifier and related method 0 2005
8183513 In-cell current subtraction for infrared detectors 1 2009
 
SONY CORPORATION (7)
* 8149309 Solid-state imaging device and camera system 7 2008
* 8854516 Solid-state imaging device and camera system 1 2012
* 2012/0188,428 SOLID-STATE IMAGING DEVICE AND CAMERA SYSTEM 5 2012
* 8964078 Solid-state imaging device and camera system 1 2014
9131179 Solid-state imaging device and camera system 1 2015
* 9288417 Solid-state imaging device and camera system 1 2015
* 9503662 Solid-state imaging device and camera system 0 2015
 
SENSORS UNLIMITED, INC. (2)
* 9191586 Buffered direct injection pixel for infrared detector arrays 1 2013
* 9497402 Image lag mitigation for buffered direct injection readout with current mirror 0 2015
 
SOCIETE FRANCAISE DE DETECTEURS INFRAROUGES-SOFRADIR (2)
* 8283618 Method and device for reading electrical charges produced by a photo-detector, and detector comprising such devices 0 2009
* 2010/0090,091 METHOD AND DEVICE FOR READING ELECTRICAL CHARGES PRODUCED BY A PHOTO-DETECTOR, AND DETECTOR COMPRISING SUCH DEVICES 1 2009
 
Sony LSI Design Inc. (1)
* 2009/0128,676 SOLID-STATE IMAGING DEVICE AND CAMERA SYSTEM 10 2008
* Cited By Examiner