Photodetection circuit and confocal microscope that has it

Details Photodetection circuit and confocal microscope that has it Photodetection circuit and confocal microscope that has it

2007-11-20

2007-11-20

Epps, Georgia (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S2140AG

Reexamination Certificate

active

10990747

ABSTRACT:
A first amplification unit amplifies at a predetermined amplification rate an output signal from a photodetection unit for detecting an optical signal from a specimen and detecting it. An offset unit assigns offset to an output signal from the photodetection unit. A second amplification unit amplifies at an amplification rate smaller than the amplification rate of the first amplification unit an output signal from the photodetection unit assigned the offset by the offset unit. A rectification unit rectifies an output signal from the second amplification unit. An addition unit adds an output signal from the first amplification unit to an output signal from the rectification unit.

REFERENCES:
patent: 3611042 (1971-10-01), Boronkay
patent: 6104734 (2000-08-01), Ino et al.
patent: 6115163 (2000-09-01), Nobuhara
patent: 6191879 (2001-02-01), Yanagisawa
patent: 6-124192 (1994-05-01), None
patent: 7-212158 (1995-08-01), None

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