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 tissuesInfo
- 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
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims description 4
- 239000008280 blood Substances 0.000 title claims description 4
- 210000004369 blood Anatomy 0.000 title claims description 4
- 229910052760 oxygen Inorganic materials 0.000 title claims description 4
- 239000001301 oxygen Substances 0.000 title claims description 4
- 239000004744 fabric Substances 0.000 claims 1
- 206010034960 Photophobia Diseases 0.000 description 2
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 208000013469 light sensitivity Diseases 0.000 description 1
- 230000036211 photosensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
- G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
- G01J1/1626—Arrangements 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)
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 |
Family
ID=6923416
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 |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE961033C (en) |
Cited By (1)
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)
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 |
-
1952
- 1952-03-25 DE DEA15408A patent/DE961033C/en not_active Expired
Patent Citations (7)
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)
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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