Optically stabilized infrared energy detector

Details Optically stabilized infrared energy detector Optically stabilized infrared energy detector

1990-05-11

1992-01-21

Howell, Kyle L.

Surgery

Truss

Pad

128633, 128664, 250339, A61B 500

Patent

active

050819984

ABSTRACT:
Improved infrared detectors for use in device such as capnographs are provided. A preferred embodiment of an infrared detector of the invention is comprised of paired thermopiles, connect in opposed relation to each other, which are preceded by an analytical or reference filter for passing a desired wavelength and a neutral density filter in the optical path of one of the thermopiles in the pair. The difference between the outputs can be used to eliminate the effects of background thermal noise, thereby improving performance of the detector. Preferably, a reference channel and an analytical channel are provided so that the respective differences between the detectors in each pair can be used to further cancel the effects of background thermal noise.

REFERENCES:
patent: Re19564 (1935-05-01), Quereau
patent: 3539804 (1970-11-01), Billetdeaux et al.
patent: 3745349 (1973-07-01), Liston
patent: 3987303 (1976-10-01), Stoft et al.
patent: 4423739 (1984-01-01), Passaro et al.
patent: 4648396 (1987-03-01), Raemer
patent: 4722612 (1988-02-01), Junkert et al.
patent: 4727886 (1988-03-01), Conrardy et al.
patent: 4772790 (1988-09-01), Aldridge
patent: 4817013 (1989-03-01), Corenman et al.
patent: 4829183 (1989-06-01), McClatchie et al.
patent: 4859859 (1989-08-01), Knodle et al.
patent: 4914719 (1990-04-01), Conlon et al.
"A Reliable, Accurate CO.sub.2 Analyzer For Medical Use", Rodney J. Solomon, Hewlett-Packard Journal, Sep. 1981, pp. 3-21.
Model DR46 Dual Element Thermopile Detector, Technical Description, Dexter Research Center, Mar. 1985.

Affiliated with

Also associated with

Rating

Optically stabilized infrared energy detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optically stabilized infrared energy detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optically stabilized infrared energy detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-110469