DE9400896U1 - Radiation and receiving device - Google Patents
Radiation and receiving deviceInfo
- Publication number
- DE9400896U1 DE9400896U1 DE9400896U DE9400896U DE9400896U1 DE 9400896 U1 DE9400896 U1 DE 9400896U1 DE 9400896 U DE9400896 U DE 9400896U DE 9400896 U DE9400896 U DE 9400896U DE 9400896 U1 DE9400896 U1 DE 9400896U1
- Authority
- DE
- Germany
- Prior art keywords
- radiation
- fiber
- components
- photoelectric
- reception device
- 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 - Lifetime
Links
- 230000005855 radiation Effects 0.000 title claims description 17
- 239000000835 fiber Substances 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 239000013307 optical fiber Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 claims description 2
- 239000006223 plastic coating Substances 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
- G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/268—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light using optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/145—Beam splitting or combining systems operating by reflection only having sequential partially reflecting surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2817—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using reflective elements to split or combine optical signals
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4246—Bidirectionally operating package structures
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fire-Detection Mechanisms (AREA)
Description
Die Neuerung betrifft eine Strahlungs- und Empfangsvorrichtung für einen faseroptischen Sensor, welche die von einer lichtelektrischen Strahlungsquelle emittierte Strahlung in eine zu einem Sensorkopf gehende Faser leitet und die aus dieser Faser zurückkommende Strahlung auf einen lichtelektrischen Empfänger leitet, bestehend aus einem Filter mit wellenlängenabhängiger Transmission und Reflexion, sowie optischen Bauteilen zur Kollimierung oder Fokussierung, zur Weiterleitung und zur Strahlteilung oder -zusammenführung.The innovation concerns a radiation and reception device for a fiber optic sensor, which directs the radiation emitted by a photoelectric radiation source into a fiber going to a sensor head and directs the radiation returning from this fiber to a photoelectric receiver, consisting of a filter with wavelength-dependent transmission and reflection, as well as optical components for collimation or focusing, for forwarding and for beam splitting or merging.
Eine solche gattungsgemäße Strahlungs- und Empfangsvorrichtung ist aus DE 40 33 187 bekannt, deren Inhalt auch zur Offenbarung dieser Anmeldung gehört. Alle optischen Bauteile sind prismatische oder zylindrische Körper, wobei GRIN-Linsen und Faserstücke wegen ihres geringen Durchmessers in Schutzrohre eingebettet sind. Die Bauteile stoßen mit Planflächen aneinander. Herkömmlich wird die gesamte Vorrichtung auf einen präzise gefrästen Montagerahmen mit Klebverbindungen in einer Justiervorrichtung montiert, wobei die Montageplatte mit einem Deckel zusammen ein schützendes Gehäuse bildet.Such a generic radiation and reception device is known from DE 40 33 187, the content of which is also part of the disclosure of this application. All optical components are prismatic or cylindrical bodies, with GRIN lenses and fiber pieces being embedded in protective tubes due to their small diameter. The components abut one another with flat surfaces. Conventionally, the entire device is mounted on a precisely milled mounting frame with adhesive connections in an adjustment device, with the mounting plate forming a protective housing together with a cover.
Die Herstellung des Montagerahmens ist aufwendig und die komplette Vorrichtung mit Montageplatte und Deckel ist beträchtlich voluminöser als die eigentliche optische Vorrichtung.The production of the mounting frame is complex and the complete device with mounting plate and cover is considerably more voluminous than the actual optical device.
US 5 026 160 beschreibt ein Diodenzeilenspektrometer, bei dem alle Funktionsteile, Lichtleitfaser, Spiegel, Gitter, Photodiodenzeile mit einem Glasblock, in dem die LichtpfadeUS 5 026 160 describes a diode array spectrometer in which all functional parts, optical fiber, mirror, grating, photodiode array are connected to a glass block in which the light paths
verlaufen, verklebt sind und auf einen Montagerahmen verzichtet wird.run, are glued and a mounting frame is omitted.
US 5 101 465 beschreibt die Verwendung einer speziell ausgebildeten Leiterbahn-Platine zur Verbindung eines optoelektronischen Elements, z.B. LED, mit einer Lichtleitfaser, wobei auch die Integration einer Linse vorgesehen ist, sowie die Verkapselung der Einheit mit Kunststoff. Auf einen Komponententräger (submount) für die Optik wird ausdrücklich verzichtet.US 5 101 465 describes the use of a specially designed circuit board to connect an optoelectronic element, e.g. LED, to an optical fiber, whereby the integration of a lens is also provided for, as well as the encapsulation of the unit with plastic. A component carrier (submount) for the optics is expressly dispensed with.
Es ist die Aufgabe der Neuerung, eine gattungsgemäße Vorrichtung zu verkleinern, vereinfachen und verbilligen.The aim of the innovation is to make a generic device smaller, simpler and cheaper.
Überraschend wurde festgestellt, daß eine gattungsgemäße Vorrichtung ohne fest vorbundenen Montagerahmen gut mit den bekannten Verfahren des Richtkittens bzw. der Montage mit Lehren und abnehmbaren Halterungen montiert werden kann und daß diese allein durch die gegenseitige Verklebung der Bauteile zumindest für die stationäre Verwendung stabil genug ist.Surprisingly, it was found that a device of this type without a fixed mounting frame can be easily assembled using the known methods of aligning cement or assembly with gauges and removable brackets and that it is stable enough, at least for stationary use, simply by gluing the components together.
Gemäß der Neuerung ist daher die gesamte gattungsgemäße Vorrichtung einschließlich Faser ohne Montagerahmen und Gehäuse aufgebaut und die optischen und lichtelektrischen Bauteile sind lediglich miteinander verklebt.According to the innovation, the entire generic device, including fiber, is constructed without a mounting frame and housing and the optical and photoelectric components are simply glued together.
Die besonders dünnen Bauteile wie GRIN-Linsen und kurze Lichtleitfaserstücke sind wie auch bei der vorbekannten Vorrichtung vorteilhaft mit Schutz- und Tragstrukturen mit den ungefähren Querschnitten der anderen Bauteile, z.B. Prismen, versehen.As with the previously known device, the particularly thin components such as GRIN lenses and short pieces of optical fiber are advantageously provided with protective and supporting structures with the approximate cross-sections of the other components, e.g. prisms.
Einen zusätzlichen Schutz gegen Fremdlicht, chemische Einflüsse und mechanische Beanspruchung wird sehrAdditional protection against external light, chemical influences and mechanical stress is very
kostengünstig mit einem insbesondere durch Tauchen aufgebrachten Kunststoff-Überzug erreicht.This can be achieved cost-effectively using a plastic coating, particularly one applied by dipping.
In ein System integriert wird die Vorrichtung in vorteilhafter Weise durch Verbindung der elektrischen Anschlußdrähte der lichtelektrischen Bauteile mit einer Leiterplatte.The device is advantageously integrated into a system by connecting the electrical connecting wires of the photoelectric components to a circuit board.
Anhand der Zeichnung, welche ein Ausführungsbeispiel schematisch zeigt, wird die Neuerung erläutert.The innovation is explained using the drawing, which schematically shows an embodiment.
Die Zeichnung entspricht zunächst der Figur 1 aus der DE 40 33 187 und zeigt die gleichen optischen und lichtelektrischen Bauteile in gleicher Wirkverbindung, nämlich Strahlungsquellen (Laserdioden) (L1, L2)/ lichtelektrische Empfänger (D1, D2) , Filter (OF), GRIN-Linsen (Gl, G2, G3, G4), Strahlteiler (Tl, T2, T3, T4), Faser (FA) und Bauteile zur Weiterleitung. (FS, 14, 14t, 14z, 15t, 15z, 16, 17, 18, 19). Alle diese Bauteile sind aus transparenten Optik-Werkstoffen in bekannter Weise gefertigt und in bekannter Weise mit bekannten Klebstoffen in justierter Lage miteinander verklebt. Die Verklebung erfolgt z.B. mit dem bekannten Verfahren des Richtkittens.The drawing corresponds to Figure 1 from DE 40 33 187 and shows the same optical and photoelectric components in the same functional connection, namely radiation sources (laser diodes) (L 1 , L2)/photoelectric receivers (D 1 , D 2 ), filters (OF), GRIN lenses (Gl, G2, G3, G4), beam splitters (Tl, T2, T3, T4), fibers (FA) and components for transmission (FS, 14, 14t, 14z, 15t, 15z, 16, 17, 18, 19). All of these components are made from transparent optical materials in a known manner and are glued together in an adjusted position in a known manner using known adhesives. The bonding is carried out, for example, using the well-known method of aligning cement.
Beispielhaft ist die Klebestelle von GRIN-Linse (Gl) zu dem das Filter (DF) als Dünnschicht tragenden Prisma (14z) als Klebewulst (KW) dargestellt, der einen kompletten Ring oder nur einzelne Tropfen bilden kann, und der die Berührungsfläche der beiden Bauteile (Gl) und (14z), die allerdings einen Luftspalt aufweisen kann, frei läßt.As an example, the bonding point of the GRIN lens (Gl) to the prism (14z) carrying the filter (DF) as a thin film is shown as an adhesive bead (KW), which can form a complete ring or only individual drops, and which leaves the contact surface of the two components (Gl) and (14z), which can, however, have an air gap, free.
Eine andere Ausführung der Klebestelle ist beispielhaft an der Verbindung des Bauteils zur Weiterleitung (Zylinder oder Quader) (18) zum Strahlteilerwürfel (17) mit Strahlteiler-Schicht (T3) als den ganzen Querschnitt ausfüllende Kittschicht (KS) dargestellt. Hierbei muß der KleberAnother design of the bonding point is shown as an example in the connection of the component for forwarding (cylinder or cuboid) (18) to the beam splitter cube (17) with beam splitter layer (T3) as a putty layer (KS) filling the entire cross-section. In this case, the adhesive must
bestimmte Anforderungen an Absorption, Brechungsindex und Homogenität erfüllen, um die Lichttransmission nicht zu stören.meet certain requirements regarding absorption, refractive index and homogeneity in order not to disturb the light transmission.
An allen Übergängen zwischen zwei Bauteilen können diese beiden oder andere Klebetechniken im Rahmen der Neuerung beliebig angewendet werden.These two or other bonding techniques can be used at any transition between two components within the scope of the innovation.
Die gesamte Vorrichtung ist ca. 4 cm lang und besteht aus 22 miteinander verklebten Bauteilen.The entire device is approximately 4 cm long and consists of 22 components glued together.
Vorteilhaft ist der dargestellte Überzug (C) mit einem Kunststoff, z.B. einer schwarzen Silikonmasse, der einfach durch Tauchen aufgebracht werden kann. Solche Überzüge sind in der Elektronikfertigung gängig. Damit kann Störlicht abgehalten werden, chemische Veränderungen der Klebestellen und der freien Bauteiloberflächen können verhindert werden und der gesamte Aufbau wird mechanisch verstärkt und bei entsprechender Elastizität des Überzugs (C) auch gegen mechanische Schocks gedämpft.The coating shown (C) with a plastic, e.g. a black silicone compound, which can be applied simply by dipping, is advantageous. Such coatings are common in electronics manufacturing. They can block out stray light, prevent chemical changes to the bonding points and the exposed component surfaces, and mechanically strengthen the entire structure and, if the coating (C) is sufficiently elastic, also cushion it against mechanical shocks.
Die Integration der Strahlungs- und Empfangsvorrichtung in ein elektrooptisches Gesamtsystem etwa eines Meßgeräts kann kostengünstig dadurch erfolgen, daß lediglich die elektrischen Anschlußdrählte der lichtelektrischen Bauteile (Li, L2/ Di) mit einer Leiterplatte (P) verlötet sind. Der lichtelektrische Empfänger (D2) ist im gezeigten Beispiel aus räumlichen Gründen auf andere Weise an die Schaltung des Meßgeräts angeschlossen.The integration of the radiation and reception device into an overall electro-optical system, such as a measuring device, can be carried out cost-effectively by simply soldering the electrical connecting wires of the photoelectric components (Li, L2/Di) to a circuit board (P). In the example shown, the photoelectric receiver (D2) is connected to the circuit of the measuring device in a different way for spatial reasons.
Natürlich kann auch die komplette Leiterplatte mit angeschlossener Vorrichtung in die Überzugsmasse eingetaucht werden.Of course, the entire circuit board with the connected device can also be immersed in the coating compound.
• ··
Die Neuerung betrifft nicht nur die beispielhaft gezeigte Ausführung, sondern alle gattungsgemäßen Strahlungs- und Empfangsvorrichtungen.The innovation affects not only the exemplary embodiment shown, but all radiation and reception devices of this type.
Claims (4)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9400896U DE9400896U1 (en) | 1994-01-20 | 1994-01-20 | Radiation and receiving device |
| DE29500373U DE29500373U1 (en) | 1994-01-20 | 1995-01-11 | Radiation and receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9400896U DE9400896U1 (en) | 1994-01-20 | 1994-01-20 | Radiation and receiving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE9400896U1 true DE9400896U1 (en) | 1994-03-03 |
Family
ID=6903446
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE9400896U Expired - Lifetime DE9400896U1 (en) | 1994-01-20 | 1994-01-20 | Radiation and receiving device |
| DE29500373U Expired - Lifetime DE29500373U1 (en) | 1994-01-20 | 1995-01-11 | Radiation and receiving device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE29500373U Expired - Lifetime DE29500373U1 (en) | 1994-01-20 | 1995-01-11 | Radiation and receiving device |
Country Status (1)
| Country | Link |
|---|---|
| DE (2) | DE9400896U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19640423C1 (en) * | 1996-09-30 | 1998-03-26 | Siemens Ag | Optoelectronic module for bidirectional optical data transmission |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2775774B1 (en) | 1998-03-06 | 2000-04-14 | Schneider Electric Ind Sa | MEASURING PROBE INCLUDING AT LEAST ONE OPTICAL FIBER, MEASURING DEVICE AND INSTALLATION INCLUDING AT LEAST ONE SUCH PROBE |
-
1994
- 1994-01-20 DE DE9400896U patent/DE9400896U1/en not_active Expired - Lifetime
-
1995
- 1995-01-11 DE DE29500373U patent/DE29500373U1/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19640423C1 (en) * | 1996-09-30 | 1998-03-26 | Siemens Ag | Optoelectronic module for bidirectional optical data transmission |
| EP0833175A2 (en) * | 1996-09-30 | 1998-04-01 | Siemens Aktiengesellschaft | Opto-electronic module for bidirectional optical transmission |
| EP0833175A3 (en) * | 1996-09-30 | 1999-02-03 | Siemens Aktiengesellschaft | Opto-electronic module for bidirectional optical transmission |
| US6021238A (en) * | 1996-09-30 | 2000-02-01 | Simens Aktiengesellschaft | Optoelectronic module for bidirectional optical data transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| DE29500373U1 (en) | 1995-03-02 |
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