Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Reexamination Certificate
2008-05-06
2008-05-06
Luu, Thanh X. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
C356S434000, C600S310000
Reexamination Certificate
active
07368694
ABSTRACT:
A device includes an element (7) for illuminating the sample (1), alternately emitting first and second radiation beams; device (9) for receiving and analyzing radiation derived from the sample (1) which converts the output radiation into control signal (S0); monitoring and controlling device (31) emitting first (S1) and second (S2) signals controlling the illuminating means (7), and a measuring signal (Sm); and device for calculating absorption characteristics of the sample (1), on the basis of the measuring signal (Sm). The monitoring and control elements (31) are adapted so that, after at least one period (Tp) of variation of the radiation beams, the amplitude of the control signal (S0), sensed on emitting phases, is equal to the amplitude of the control signal (S0), sensed on emission phases of the other radiation, and the measuring signal (Sm) represents at least one of the control signals (S1, S2).
REFERENCES:
patent: 3799672 (1974-03-01), Vurek
patent: 4863265 (1989-09-01), Flower et al.
patent: 4942877 (1990-07-01), Sakai et al.
patent: 5096294 (1992-03-01), Layzell et al.
patent: 5800348 (1998-09-01), Kaestle
patent: 35 18 527 (1986-11-01), None
patent: 0 502 717 (1992-09-01), None
patent: 00/75642 (2000-12-01), None
Cerovic Zoran
Goulas Yves
Moya Ismaël
Centre National de la Recherche Scientifique (C.N.R.S)
Luu Thanh X.
Yam Stephen
Young & Thompson
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