Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1997-05-13
1999-11-02
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250343, 250345, 250575, 250373, 356433, 356436, 356437, G01N 2117
Patent
active
059775467
ABSTRACT:
Method and apparatus for measuring the quantity of sample materials which provides stable measurements for extended periods of time. A source beam containing measuring radiation and reference radiation is directed through a sample material. The measuring radiation consists of spectral energy that interacts substantially with the sample material. The reference radiation consists of spectral energy with substantially different interaction properties with the sample material. Radiation is directed along separate analyzing and normalizing information channels wherein the radiation has substantially different sample interaction. Analyzing and normalizing detectors provide responses to radiation in respective analyzing information channel or normalizing information channel. A measuring mode is established by inserting a first filter into the source beam to allow substantially only measuring radiation to propagate to the detectors, creating measuring responses. A normalizing mode is established by inserting a second filter into the source beam to allow substantially only reference radiation to propagate to the detectors, creating normalizing responses. The detector responses are used collectively with appropriate signal processing means to obtain a measurement of sample quantity which is substantially independent from variations in measuring radiation intensity, variations in reference radiation intensity, changes in optical collection efficiencies for both detectors, and changes in gain from the response signals from both detectors.
REFERENCES:
patent: 3562522 (1971-02-01), Cederstrand et al.
patent: 3745349 (1973-07-01), Liston
patent: 3807876 (1974-04-01), Nakahara et al.
patent: 3811776 (1974-05-01), Blau
patent: 3895233 (1975-07-01), Boll et al.
patent: 4057734 (1977-11-01), Barringer
patent: 4233513 (1980-11-01), Elder et al.
patent: 4300049 (1981-11-01), Sturm
patent: 4355234 (1982-10-01), Fertig et al.
patent: 4500207 (1985-02-01), Maiden
patent: 4525627 (1985-06-01), Krempl et al.
patent: 4598201 (1986-07-01), Fertig et al.
patent: 4648396 (1987-03-01), Raemer
patent: 4682031 (1987-07-01), Fabinski et al.
patent: 4975582 (1990-12-01), Mount et al.
patent: 5077469 (1991-12-01), Fabinski et al.
patent: 5153436 (1992-10-01), Apperson et al.
patent: 5239492 (1993-08-01), Hartwig et al.
patent: 5341214 (1994-08-01), Wong
patent: 5381010 (1995-01-01), Gordon
patent: 5517314 (1996-05-01), Wallin
patent: 5679955 (1997-10-01), Schmidt et al.
WO 95 25950 (Andros Inc.) Sep. 25, 1995.
Hannaher Constantine
Israel Andrew
Lacher Frederick K.
Louke Marcella R.
LandOfFree
Self normalizing radiant energy monitor and apparatus for gain i does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Self normalizing radiant energy monitor and apparatus for gain i, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self normalizing radiant energy monitor and apparatus for gain i will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2138560