Portable filter infrared spectrometer

Details Portable filter infrared spectrometer Portable filter infrared spectrometer

1994-09-08

1996-05-21

Willis, Davis L.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

25033911, 356 51, G01N 2125

Patent

active

055192190

ABSTRACT:
There is described within a portable, battery-powered multiple filter infrared spectrometer consisting of a highly efficient optical system employing an infrared source with a chopper, from which IR energy passes through compound parabolic concentrators (CPC's) and is directed by a beamsplitter to the external sample, where the beam intersects with the sample via reflection and is returned through the CPC and beamsplitter to a stationary filter assembly and discrete detector array where the energy is converted to an A.C. (alternating current) signal. This current energizes an LED bar graph display for spectral identification. This method and apparatus is used to determine IR spectra of solids, liquids on a mirror, and gases in a container with a mirror to reflect light.

REFERENCES:
patent: 3811781 (1974-05-01), Lowy
patent: 4527062 (1985-07-01), Novinson
patent: 4560275 (1985-12-01), Goetz
patent: 4629322 (1986-12-01), Pollard
patent: 4647777 (1987-03-01), Meyer
patent: 4825076 (1989-04-01), Shields
patent: 5036198 (1991-07-01), Spaeth
patent: 5134291 (1992-07-01), Ruhl, Jr. et al.
patent: 5166755 (1992-11-01), Gat

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