Automatic calibration of electron multiplying CCDs

Details Automatic calibration of electron multiplying CCDs Automatic calibration of electron multiplying CCDs

2006-01-19

2009-10-27

Hannett, James M (Department: 2622)

Television

Camera, system and detail

Solid-state image sensor

C348S294000, C348S300000, C348S301000

Reexamination Certificate

active

07609311

ABSTRACT:
A method of determining the gain of an electron multiplier, especially in an Electron Multiplying Charge Coupled Device (EMCCD). The electron multiplier multiplies, in use, signals received from a device, typically a CCD, comprising photodetectors. A test signal is input to the electron multiplier from the device, and the gain of the electron multiplier is determined from the output of the electron multiplier. The test signal comprises, or is derived from, electrical charge generated by the photodetectors other than as a result of the incidence of an electromagnetic signal on the photodetectors. The test signal comprises, or is derived from, dark current, or clock induced charge.

REFERENCES:
patent: 3898452 (1975-08-01), Hertel
patent: 6444968 (2002-09-01), Burt et al.
patent: 7420605 (2008-09-01), Pool et al.
patent: 2002/0093288 (2002-07-01), Spencer et al.
patent: 2003/0042400 (2003-03-01), Hynecek
patent: 2005/0056771 (2005-03-01), Atlas et al.

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