[54] INSTRUMENT FOR SPECTRAL
MEASUREMENT IN THE BLOODSTREAM
[75] Inventors: Meinrad Machler; Sibylle Machler, both of Ellwangen; Richard Sachse, Konigsbronn, all of Fed. Rep. of Germany
[73] Assignee: Carl-Zeiss-Stiftung, Heidenheim on the Brenz, Fed. Rep. of Germany
[21] Appl. No.: 733,942
[22] Filed: May 14,1985
Related U.S. Application Data
[63] Continuation of Ser. No. 488,189, Apr. 25, 1983, abandoned.
[30] Foreign Application Priority Data
Apr. 29, 1982 [DE] Fed. Rep. of Germany 3215879
[51] Int. Q." A61B 5/00
[52] U.S. a 128/634; 350/96.2;
356/41; 356/326
[58] Field of Search 251/149.2; 128/633,
128/634, 664, 665; 350/96.2, 96.23; 356/41,
326, 328
[56] References Cited
U.S. PATENT DOCUMENTS
3,068,742 12/1962 Hicks, Jr. et al 356/41
3,136,310 6/1964 Meltzer 356/41
3,580,414 5/1971 Ginsburgh et al 251/149.2
3,754,564 8/1973 Naumburg et al 251/149.2
3,847,483 11/1974 Shaw et al. 356/41
3,911,977 10/1975 Berger 251/149.2
4,012,147 3/1977 Walrafen 356/301
4,050,450 9/1977 Polanyi et al 128/634
4,171,868 10/1979 Hensel et al 350/96.23
4,213,462 7/1980 Sato 128/634
4,214,729 7/1980 Narfgren 251/149.2
4,247,164 1/1981 Mannschke 350/96.2
4,285,596 8/1981 Landa 356/328
4,289,295 9/1981 Allread 251/149.2
4,295,470 10/1981 Shaw et al 128/634
4,330,209 5/1982 Hashimoto et al 356/328
4,357,105 11/1982 Loretz 356/41
4,423,736 1/1984 De Witt et al 128/633
4,445,753 5/1984 Collignon 350/96.2
4,453,218 6/1984 Sperinde et al 128/634
4,461,537 7/1984 Raymer, II et al 350/96.2
4,469,398 9/1984 De Baets et al 350/96.2
Primary Examiner—Kyle L. Howell
Assistant Examiner—Ruth S. Smith
Attorney, Agent, or Firm—Stonebraker, Shepard &
Stephens
[57] ABSTRACT
In an instrument for spectral measurement in the bloodstream, the light-guide probe is developed with a diameter of, at most, 0.5 mm. By plug connections with precisely defined positions of the light guides, the light guide probe is connected to an illuminating device having a xenon lamp and to a diode line spectrometer. The diode line spectrometer has an aperture ratio which includes the aperture of the light guide without trimming or vignetting.
3 Claims, 10 Drawing Figures
