DE961033C - Photometric measuring device for the examination of oxygen in the blood in human tissues - Google Patents

Photometric measuring device for the examination of oxygen in the blood in human tissues

Info

Publication number
DE961033C
DE961033C DEA15408A DEA0015408A DE961033C DE 961033 C DE961033 C DE 961033C DE A15408 A DEA15408 A DE A15408A DE A0015408 A DEA0015408 A DE A0015408A DE 961033 C DE961033 C DE 961033C
Authority
DE
Germany
Prior art keywords
cells
infrared
blood
measuring device
cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEA15408A
Other languages
German (de)
Inventor
Johannes Dorsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Atlas Werke AG
Original Assignee
Atlas Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Atlas Werke AG filed Critical Atlas Werke AG
Priority to DEA15408A priority Critical patent/DE961033C/en
Application granted granted Critical
Publication of DE961033C publication Critical patent/DE961033C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00Photometry, e.g. photographic exposure meter
    • G01J1/10Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/16Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
    • G01J1/1626Arrangements with two photodetectors, the signals of which are compared

Description

Die Erfindung bezieht sich auf ein photometrisches Meßgerät mit zwei hintereinander angeordneten, verschieden spektralempfindlichen lichtelektrischen Zellen zur Sauerstoffuntersuchung des Blutes in menschlichen Geweben mit Rot- und Infrarotlicht. The invention relates to a photometric measuring device with two one behind the other, differently spectrally sensitive photoelectric Cells for oxygen analysis of the blood in human tissues with red and Infrared light.

Der Erfindung liegt der Gedanke zugrunde, daß zur Untersuchung von- Geweben eine möglichst feine Unterteilung der Untersuchungsfelder erforderlich ist, um die Auswirkung von Inhomogenitäten zu vermeiden. Um dies zu erreichen, sind erfindungsgemäß die beiden hintereinandergeschalteten lichtelektrischen Zellen gitterförmig gestaltet und so gegeneinander verschie.bbar angeordnet, daß die infrarotempfindliche Zelle die hellrotempfindliche ganz oder teilweise abdeckt. Dadurch wird erreicht, daß Hell- und Infrarotzellen miteinander abwechseln und daß für die Hellrot- und Infrarotzelle im wesentlichen der gleiche Lichtpfad wirksam ist. The invention is based on the idea that for the investigation of Tissues, the finest possible subdivision of the examination fields is necessary, to avoid the effects of inhomogeneities. To achieve this are according to the invention the two photoelectric cells connected in series are designed in a grid-like manner and arranged so that they can be displaced from one another in such a way that the infrared-sensitive cell completely or partially covers the light red sensitive. It is thereby achieved that Alternate bright and infrared cells and that for the bright red and infrared cells essentially the same light path is effective.

Die Erfindung sei an mehreren Ausführungsbei spielen veranschaulicht. The invention is illustrated by several exemplary embodiments.

Abb. I zeigt in schematischer Darstellung eine hell- und infrarotempfindliche Lichtzellenanordnung nach der Erfin.dung, Abb. 2 eine Anordnung mit gitterförmiger Ausbildung der Zellen, wobei die Zellen der Anschaulichkeit halber nebeneinander gezeichnet sind; Abb. 3 zeigt die beiden Zellen der Abb. 2 in teilweiser Ubereinan.derdeckung, Abb. 4 eine weitere Ausführungsform in. gleicher Darstellung wie Abb. 3. Fig. I shows a schematic representation of a light and infrared sensitive Light cell arrangement according to the Erfin.dung, Fig. 2 an arrangement with a lattice Formation of the cells, the cells side by side for the sake of clarity are drawn; Fig. 3 shows the two cells of Fig. 2 in partial overlap, Fig. 4 shows another embodiment in the same representation as Fig. 3.

Die in. Abb. I dargestellte Anordn.ung besteht aus zwei quadratischen Lichtzellen, und zwar einer hellrotempfindlichen Zelle I und einer infrarotempfindlichen Zelle 2. Die Infrarotzelle 2 besteht aus fünf gleichen Teilzellen, die elektrisch hintereinandergeschaltet sind. Die Zelle 2 dient als Lichtblende für die darunterliegende Hellrotzelle I und kann in Pfeilrichtung verschoben werden, um das Verhältnis der bei den Lichtempfindlichkeiten variabel zu gestalten. Die Zahl der Teilzellen der Infrarotzelle wird zweckmäßig so gewählt, daß die Lichtempfin dl:ichkeiten für Hellrot und Infrarot sich nahe kommen.. Die beiden Zellen werden gegeneinandergeschaltet und belastungsfrei ausgewertet. The arrangement shown in Fig. I consists of two square Light cells, namely a bright red-sensitive cell I and an infrared-sensitive cell Cell 2. The infrared cell 2 consists of five equal sub-cells, which are electrical are connected in series. The cell 2 serves as a light screen for the one below Bright red cell I and can be moved in the direction of the arrow to the ratio of to make the photosensitivities variable. The number of sub-cells of the The infrared cell is expediently chosen so that the light sensitivity is bright red and infrared come close. The two cells are switched against each other and evaluated stress-free.

Um zu erreichen, daß für die beiden Zellen im wesentlichen der gleiche Lichtpfad wirksam wird, was in.sbeson.dere bei der Sauerstoffmessung von Blut eine Rolle spielt, sind, wie in Abb. 2 bis 4 dargestellt, die Zellen gitterförmig ausgebildet, so daß immer eine Lichtzone für Hellrot mit einer Lichtzone für Infrarot abwechselt. Die Anordnung in Abb. 2 und 3 zeigt eine Aufteilung der Zellen in zueinander parallele Streifen gleicher Breite, die den gleichen Abstand voneinander haben. Die Hellrotzelle ist zur Bildung des Gitters mit Abdeckungsstreifen 3 versehen, während die Infrarotzelle aus z. B. drei Teilzellen4, 5, 6 gebildet ist. To achieve that for the two cells essentially the same Light path becomes effective, which is particularly important when measuring blood oxygen levels Plays a role, as shown in Fig. 2 to 4, the cells are grid-shaped, so that a light zone for bright red always alternates with a light zone for infrared. The arrangement in Fig. 2 and 3 shows a division of the cells into mutually parallel Strips of the same width that are equidistant from one another. The bright red cell is provided with cover strips 3 to form the grid, while the infrared cell from z. B. three sub-cells 4, 5, 6 is formed.

Wie in, Abb. 3 veranschaulicht, können die beiden Zellen so miteinander zur Deckung gebracht werden, daß durch die Teilzellen der Infrarotzelle die Zonen der gitterförmigen Hellrotzelle ganz oder zum Teil verdeckt werden. Durch die Parallelverschiebung der Zellen. gegeneinander entsteht eine jalousieartige Abblen.dung.As illustrated in, Fig. 3, the two cells can so with each other be brought to cover that the zones through the sub-cells of the infrared cell the lattice-shaped bright red cell are completely or partially covered. Due to the parallel shift of cells. A blind-like screen is created against each other.

Abb. 4 zeigt eine Ausführungsform, in der abgerundete Zellen gegeneinander verdrehbar sind. Fig. 4 shows an embodiment in which rounded cells face each other are rotatable.

Dabei wird eineVeränderbarkeit der Lichtempfindlichkeiten bis zu 50°/o ermöglicht. Auch in diesem Fall werden die Hellrot- und Infrarotzellen zur Erzielung einer Kompensation gegeneinandergeschaltet und die Teilzellen der Infrarotzelle in Serie gelegt.The light sensitivities can be varied by up to 50% enables. In this case too, the bright red and infrared cells are used to achieve a compensation switched against each other and the sub-cells of the infrared cell laid in series.

Die Erfindung ist nicht auf die dargestellten Beispiele beschränkt, insbesondere kann die Unterteilung der Infrarotzelle in anderer Weise erfolgen. The invention is not limited to the examples shown, in particular, the subdivision of the infrared cell can take place in a different way.

Auch die Abdeckung der Hellrotzelle kann durch Aufteilung in mehrere Einzelzellen ersetzt werden. die unter sich parallel geschaltet sind. Schließlich kann die Erfindung auch sinngemäß zur T;ntersuchung anderer Stoffe und mit anderen Lichtbändern Anwendung finden.The light red cell can also be covered by dividing it into several Single cells are replaced. which are connected in parallel among themselves. In the end The invention can also be used analogously to examine other substances and with others Light bands are used.

Claims (1)

PATENTANSPRUCH: Photometrisches Meßgerät mit zwei hintereinander angeordneten, verschieden spektralempfindlichen lichtelektrischen Zellen zur Sauerstoffuntersuchung des Blutes in menschlichen. Geweben mit Rot- und Infrarotlicht, dadurch gekennzeichnet, daß beide Zellen gitterförmig gestaltet und so gegeneinander verschiebbar angeordnet sind, daß die infra.rotempfindliche Zelle die hellrotempfindliche ganz oder teilweise abdeckt. PATENT CLAIM: Photometric measuring device with two in a row arranged, differently spectrally sensitive photoelectric cells for oxygen analysis of blood in human. Fabrics with red and infrared light, characterized that both cells are lattice-shaped and so arranged so that they can be moved relative to one another are that the infrared-sensitive cell completely or partially the bright red-sensitive covers. In Betracht gezogene Druckschriften.: Deutsche Patentschriften Nr.6t 64I 081, 723 139, so2 723; österreichische Patentschrift Nr. I34 943; schweizerische Patentschrift Nr. 149 750; britische Patentschrift Nr. 479 662; USA.-Patentsclirift Nr. 2 382 220. Publications considered: German Patent Specifications No. 6t 64I 081, 723 139, so2 723; Austrian patent specification No. 134 943; Swiss U.S. Patent No. 149,750; British Patent No. 479,662; USA. Patent Clirift No. 2,382,220.
DEA15408A 1952-03-25 1952-03-25 Photometric measuring device for the examination of oxygen in the blood in human tissues Expired DE961033C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA15408A DE961033C (en) 1952-03-25 1952-03-25 Photometric measuring device for the examination of oxygen in the blood in human tissues

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA15408A DE961033C (en) 1952-03-25 1952-03-25 Photometric measuring device for the examination of oxygen in the blood in human tissues

Publications (1)

Publication Number Publication Date
DE961033C true DE961033C (en) 1957-03-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEA15408A Expired DE961033C (en) 1952-03-25 1952-03-25 Photometric measuring device for the examination of oxygen in the blood in human tissues

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DE (1) DE961033C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1108459B (en) * 1955-09-16 1961-06-08 Mudr Otakar Ruuzicka Photocolorimetric light pick-up for oximeters

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH149750A (en) * 1929-10-28 1931-09-30 Sheldon Electric Corp Apparatus for comparing light and color intensities.
AT134943B (en) * 1932-07-14 1933-10-10 Horst Ing Kottas Photoelectric batteries.
DE641081C (en) * 1934-08-14 1937-01-20 Ernst Presser Process for the production of a photoelectric cell consisting of several sub-cells connected in series
GB479662A (en) * 1936-07-11 1938-02-09 Gas Accumulator Company United Improvements in or relating to devices for measuring and/or indicating the diffusion of light in, or the turbidity of fluids and other transparent media
DE723139C (en) * 1939-03-28 1942-07-29 Aeg Device to compensate for fluctuations in brightness of the light source of a photoelectric photometer
US2382220A (en) * 1942-04-16 1945-08-14 Weston Electrical Instr Corp Photocell and filter combination
DE812723C (en) * 1950-06-10 1951-09-03 Gossen & Co G M B H P Measuring device for determining the color character of lighting

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH149750A (en) * 1929-10-28 1931-09-30 Sheldon Electric Corp Apparatus for comparing light and color intensities.
AT134943B (en) * 1932-07-14 1933-10-10 Horst Ing Kottas Photoelectric batteries.
DE641081C (en) * 1934-08-14 1937-01-20 Ernst Presser Process for the production of a photoelectric cell consisting of several sub-cells connected in series
GB479662A (en) * 1936-07-11 1938-02-09 Gas Accumulator Company United Improvements in or relating to devices for measuring and/or indicating the diffusion of light in, or the turbidity of fluids and other transparent media
DE723139C (en) * 1939-03-28 1942-07-29 Aeg Device to compensate for fluctuations in brightness of the light source of a photoelectric photometer
US2382220A (en) * 1942-04-16 1945-08-14 Weston Electrical Instr Corp Photocell and filter combination
DE812723C (en) * 1950-06-10 1951-09-03 Gossen & Co G M B H P Measuring device for determining the color character of lighting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1108459B (en) * 1955-09-16 1961-06-08 Mudr Otakar Ruuzicka Photocolorimetric light pick-up for oximeters

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