Optical instrument providing combined infrared and Ramen analysi

Details Optical instrument providing combined infrared and Ramen analysi Optical instrument providing combined infrared and Ramen analysi

1997-02-28

1998-11-24

Glick, Edward J.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

25033905, 25033907, 25033911, 356301, G01J 344, G01J 2165, G01J 2135

Patent

active

058411399

ABSTRACT:
Apparatus for IR and Raman analysis of a sample includes an optical train having a common path segment that includes the sample, and a mechanism for selectively or simultaneously) subjecting the sample to analytic radiation (such as IR) or Raman excitation radiation, and selectively (or simultaneously) detecting the analytic radiation from the sample or the Raman scattered light from the sample. In a specific embodiment, the apparatus includes a sample stage for holding the sample; an infrared source; an infrared detector; a source of Raman excitation light; a Raman spectrometer; infrared and visible (Raman) light objectives selectively positionable in the common path segment; an optical train disposed in the common path segment for transferring light between the sample and a particular location; and a mechanism for selectively (or simultaneously) (a) directing analytical radiation to the sample and analytical radiation from the sample to the infrared detector, or (b) directing Raman excitation light to the sample and Raman scattered light to the Raman spectrometer. The mechanism can be a movable mirror or a fixed dichroic beam splitter.

REFERENCES:
patent: 5251008 (1993-10-01), Masutani
patent: 5278413 (1994-01-01), Yamaguchi et al.
patent: 5351121 (1994-09-01), Baer et al.
patent: 5377003 (1994-12-01), Lewis et al.
patent: 5377004 (1994-12-01), Owen et al.
Raman Spectrometers HoloProbe VPT System.TM. (Kaiser Optical Systems, Inc.), 8-pages, Kaiser Optical Systems, Inc., P.O. Box 983, Ann Arbor, MI 84106.
The UMA 500 Microspectroscopy Accessory: Research Infrared Microscopy with Fingertip Control (Bio-Rad/Digilab), 6-pages, Bio-Rad Digilab, 237 Putnam Avenue, Cambridge, MA 02139.

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