NL8104124A - Device for separating radiation beams emerging from an optical fiber. - Google Patents
Device for separating radiation beams emerging from an optical fiber. Download PDFInfo
- Publication number
- NL8104124A NL8104124A NL8104124A NL8104124A NL8104124A NL 8104124 A NL8104124 A NL 8104124A NL 8104124 A NL8104124 A NL 8104124A NL 8104124 A NL8104124 A NL 8104124A NL 8104124 A NL8104124 A NL 8104124A
- Authority
- NL
- Netherlands
- Prior art keywords
- wavelengths
- beams
- wavelength
- radiation
- separating
- Prior art date
Links
- 230000005855 radiation Effects 0.000 title claims description 26
- 239000013307 optical fiber Substances 0.000 title claims description 7
- 239000000835 fiber Substances 0.000 claims description 27
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000926 separation method Methods 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
- G02B6/29304—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 diffraction, e.g. grating
- G02B6/29305—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 diffraction, e.g. grating as bulk element, i.e. free space arrangement external to a light guide
- G02B6/2931—Diffractive element operating in reflection
-
- 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
- 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
- G02B6/29379—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 characterised by the function or use of the complete device
- G02B6/2938—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 characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM
- G02B6/29382—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 characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM including at least adding or dropping a signal, i.e. passing the majority of signals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Laser Beam Processing (AREA)
- Laser Surgery Devices (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Description
*' - *. ft phn 10.151 i N.V. Philips * Gloeilanpenfabrieken te Eindhoven.* '- *. ft phn 10.151 i N.V. Philips * Gloeilanpenfabrieken in Eindhoven.
Inrichting voor het scheiden van uit een cptische vezel tredende stralingsbundels.Device for separating radiation beams emerging from a optical fiber.
De uitvinding heeft betrekking op een inrichting voor het scheiden van uit een cptische vezel tredende stralingsbundels van ver-schillende golflengten met behulp van een ref lectietralie.The invention relates to a device for separating radiation beams of different wavelengths emerging from a fiber fiber using a reflection grating.
Een dergelijke inrichting is bekend, bijv. uit applied 5 Cptics, Vol. 18, no. 16, pag. 2835. In de bekende inrichting warden de uit de cptische vezel tredende stralingsbundels via een lenzen-stelsel cp het reflectietralie gericht. De hoek waaronder de stralingsbundels door het tralie warden gereflecteerd is afhankelijk van de golflengten van de bundels. De aldus gescheiden stralingsbundels 10 warden na doargang dear het lenzenstelsel aan een aantal cptische uitgangsvezels toegevoerd. Elk der uitgangsvezels correspondeert met de bundel net golflengte resp. 2/ *···λη die onder een hoek , resp. (X 2, ....C^n door het tralie wordt geref lecteerd.Such a device is known, e.g. from applied 5 Cptics, Vol. 18, No. 16, p. 2835. In the known device, the radiation beams emerging from the cptic fiber were directed via a lens system at the reflection grating. The angle at which the radiation beams are reflected by the grating depends on the wavelengths of the beams. The radiation beams 10 thus separated were fed after the passage through the lens system to a number of basic optical fibers. Each of the output fibers corresponds to the beam of wavelength resp. 2 / * ··· λη which is inclined at an angle, respectively. (X 2, .... C ^ n is reflected by the grating.
De bekende inrichting heeft als nadeel, dat alleen 15 stralingsbundels met golflengten die vrij dicht bij elkaar liggen gescheiden kunnen warden.The known device has the drawback that only 15 radiation beams with wavelengths which are quite close to each other can be separated.
De uitvinding beoogt een inrichting van bovengenoemde soort die oak geschikt is voor een of meer stralingsbundels waarvan de golflengte betrekkelijk ver van die van de andere stralingsbundels 20 afligt. Volgens βέη aspect heeft zij daartoe als kenmerk dat tussen de cptische vezel en het reflectietralie een golflengten-scheidings-spiegel is aangebracht, die de stralingsbundel (of stralingsbundels) met een golflengte (of golflengten) die betrekkelijk ver afligt (of afliggen) van die der stralingsbundels met vrij dicht bij elkaar 25 liggende golflengten reflecteert naar een uitgangsvezel en de stralingsbundels met vrij dicht bij elkaar liggende golflengten doorlaat naar het reflectietralie.The object of the invention is an apparatus of the above-mentioned type which is also suitable for one or more radiation beams whose wavelength is relatively far from that of the other radiation beams. According to βέη aspect, it is characterized in that for this purpose a wavelength-separating mirror is arranged between the cptic fiber and the reflection grating, which radiation beam (or beams) with a wavelength (or wavelengths) that is relatively far (or far away) from that of radiation beams with fairly close wavelengths reflect to an output fiber and transmit the radiation beams with fairly close wavelengths to the reflection grating.
Volgens een gunstig ander aspect heeft een inrichting volgens de uitvinding als kenmerk, dat tussen de optische vezel en het 30 reflectietralie een golflengten-scheidingsspiegel is aangebracht, die de bundels met vrij dicht bij elkaar liggende golflengten reflecteert naar het reflectietralie en de bundel (of bundels) met een golflengte (of golflengten) die betrekkelijk ver afligt (of afliggen) van 8104124 PHN 10.151 2 die der bundels met vrij dicht bij elkaar liggende golflengten, doorlaat.According to a favorable other aspect, a device according to the invention is characterized in that a wavelength separating mirror is arranged between the optical fiber and the reflection grating, which reflects the beams with fairly closely spaced wavelengths to the reflection grating and the beam (or beams ) having a wavelength (or wavelengths) that is relatively far (or far away) from 8104124 PHN 10.151 2 that passes through the bundles of fairly close wavelengths.
Volgens een verdere uitvoeringsvorm van de inrichting volgens de uitvinding is zowel in de weg van de door de scheidings-5 spiegel gereflecteerde ais in de weg van de door de scheidingsspiegel doorgelaten stralingsbundels een reflectietralie opgencmen.According to a further embodiment of the device according to the invention, a reflection grating is received both in the way of the reflection reflected by the separating mirror and in the way of the radiation beams transmitted through the separating mirror.
De uitvinding zal worden toegelicht aan de hand van de tekening die, bij wijze van voorbeeld, in fig. 1 een eerste uitvoe-ringsvom van de inrichting volgens de uitvinding. laat zien, in 10 fig. 2 een tweede uitvoeringsvorm toont en in fig. 3 een derde uitvoeringsvorm.The invention will be elucidated with reference to the drawing, which shows, by way of example, in Fig. 1 a first embodiment of the device according to the invention. shows, in Fig. 2 shows a second embodiment and in Fig. 3 a third embodiment.
In de uitvoeringsvorm .volgens fig. 1 treden uit de ingangs-vezel 10 bundels met golflengten A-j/ '/\2, ····· λΝ, Van deze-bundels liggen de golflengten }\ ^, ·*·*· r)N vrij dicht 15 bij elkaar en ligt de golflengte ^N+-| vrij ver verwijderd van de andere golflengten. Via de lens 11 vallen de, nu evenwijdige, bundels op de golflengten-scheidingsspiegel 12 die de bundels met golflengten y ^2' .....^ n ongehinderd doorlaat en de bundel met golflengte ^ reflecteert. Het dichroitische filter 14 laat deze 20 bundel, via de lens 15, door naar de uitgangsvezel 20. Het filter 14 onderdrukt de aan de spiegel 12 gereflecteerde reststraling van de golflengten A2, ..... )\Ν· De bundels met golflengten A2' ····· vallen, na doorlating door de spiegel 12, op het reflectietralie 13 in onder een hoek Θ. met de narmaal 21.In the embodiment according to Fig. 1, beams of wavelengths Aj / '/ \ 2, ····· λΝ, exit from the input fiber, the wavelengths are} \ ^, · * · * · r) N is quite close to each other and the wavelength is ^ N + - | quite far away from the other wavelengths. Via the lens 11, the now parallel beams fall on the wavelength separating mirror 12 which allows the beams of wavelengths y ^ 2 '..... n to pass unhindered and reflects the beam of wavelength. The dichroic filter 14 transmits this beam, via the lens 15, to the output fiber 20. The filter 14 suppresses the residual radiation of the wavelengths A2, .....) reflected on the mirror 12. The beams with wavelengths A2 '····· After transmission through the mirror 12, the reflection grating 13 falls at an angle Θ. with the refill 21.
25 De bundel met golflengte A ^ wordt gereflecteerd onder een hoek met de normaal 21, die met golflengte A2 onder een hoek θ2, enz.The beam of wavelength A ^ is reflected at an angle to the normal 21, that of wavelength A2 at an angle θ2, etc.
De aldus naar golflengte ruimtelijk gescheiden bundels gaan nagenoeg · ongehinderd door de spiegel 12 en worden door de lens 11 op ver-schillende plaatsen in zijn brandvlak gefocusseerd. Op deze plaatsen 30 zijn de uitgangsvezels 1, 2, ..... N aangebracht. De onderlinge scheiding van de bundels met golflengten A-j, .....A N is zodoende gerealiseerd.The beams thus spatially separated by wavelength pass through the mirror 12 practically unhindered and are focused by the lens 11 at different places in its focal plane. The starting fibers 1, 2, ..... N are provided at these locations. The mutual separation of the beams with wavelengths A-j, ..... A N is thus realized.
In een uitvoeringsvoorbeeld waren de vezels 10 en 20 identiek en hadden een kemdiameter van 50ytim. Uit de vezel 10 35 traden bundels met golflengten van resp. 817 nm, 844 nm en 1325 nm. De bundel met een golflengte van 1325 nm trad in de vezel 20, die met een golflengte A ^ = 817 nm in de vezel 1, die met een golflengte A2 = 844 nm In de vezel 2. De vezels 1 en 2 hadden een kemdiameter 8104124 5** H3N 10.151 3 van lOOyim. Cmdat de vezels 10 en 20 identiek xraren, is er de mogelijkbeid zcoder extra verliezen de bundel net een golflengte van 1325 ran van richting te laten cmkeren, dus uit de vezel 20 te laten uittreden en in de vezel 10 te laten intreden.In an exemplary embodiment, the fibers 10 and 20 were identical and had a core diameter of 50 µm. Beams with wavelengths of resp. 817 nm, 844 nm and 1325 nm. The beam with a wavelength of 1325 nm entered the fiber 20, that with a wavelength A ^ = 817 nm in the fiber 1, that with a wavelength A2 = 844 nm In the fiber 2. The fibers 1 and 2 had a core diameter 8104124 5 ** H3N 10,151 3 from lOOyim. Since fibers 10 and 20 are identical, there is the possibility of causing additional losses to cause the beam to reverse in direction of a wavelength of 1325, so to exit from fiber 20 and enter fiber 10.
5 In de uitvoeringsvorm volgens fig. 2 treden uit de ingangs- vezel 30 bundels met golflengten X2, λN+1. Van deze bundels liggen de golflengten t/m ϊ^Ν vrij dicht bij elkaar en ligt de golflengte /\N+1 ver verwijderd van de andere golflengten. Via de lens 31 vallen de, nu evenwijdige, bundels op de golflengten-10 scheidingsspiegel 32, die de bundel met golflengte X N+1 nagenoeg ongehinderd (voor 90 a 95%) doorlaat en de bundels met golflengten X 1 t/m vrijwel gebeel (voor 99,9%) reflecteert. De doorgelaten bundel w^rdt door de lens 33 gefocusseerd in zijn brandvlak waar de uit-gangsvezel 34 is aangebracht. De gereflecteerde bundels vallen op het 15 reflectietralie 35 en zijn na reflectie aan dat tralie ruimfcelijk gescheiden. Vervolgens warden deze gereflecteerde bundels weer gereflecteerd door de spiegel 32, en. door de lens 31 gefocusseerd op de carrespcnderende uitgangsvezels 1 t/m N. Het in de uitvoeringsvorm volgens fig. 1 qpgencmen filter 14 ontbreekt hier. limners, de in 20 de aan de spiegel 32 gereflecteerde aanwezige stralingscxarponent met golflengte X N+1 (5 a 10% van de op de spiegel 32 vallende straling met golflengte X N+1) wordt door het reflectietralie 35 onder een zodanige hoek gereflecteerd, en via de spiegel 32 en de lens 31 afge-beeld, dat de afbeelding ver buiten het intreevlak van de vezels 1 t/m N 25 valt. Er is dus, ock zander het filter 14, geen overspraak van straling met golflengte X in de vezels 1 t/m N.In the embodiment according to Fig. 2, beams of wavelengths X2, λN + 1 emerge from the input fiber. The wavelengths up to ϊ ^ Ν of these beams are quite close to each other and the wavelength / \ N + 1 is far away from the other wavelengths. Via the lens 31, the now parallel beams fall on the wavelengths-separating mirror 32, which transmits the beam with wavelength X N + 1 almost unimpeded (for 90 to 95%) and the beams with wavelengths X 1 up to almost image (99.9%) reflects. The transmitted beam is focused through the lens 33 into its focal plane where the output fiber 34 is disposed. The reflected beams fall on the reflection grating 35 and are spatially separated after reflection on that grating. Then, these reflected beams were again reflected by the mirror 32, and. Focused by the lens 31 on the corresponding output fibers 1 to N. The filter 14 in the embodiment according to FIG. 1 is missing here. limners, the radiation component present in the mirror 32 with wavelength X N + 1 (5 to 10% of the radiation incident on the mirror 32 with wavelength X N + 1) reflected in the mirror 32 is reflected at such an angle by the reflection grating 35, and displayed via mirror 32 and lens 31, that the image falls far outside the entry plane of fibers 1 to N 25. Thus, even if the filter 14 does not, there is no crosstalk of radiation of wavelength X in the fibers 1 to N.
In de uitvoeringsvorm volgens fig. 3 warden twee reflectie-tralies toegepast. Van de uit de ingangsvezel 40 tredende stralingsbundels met golflengten X ^ t/m X liggen de golflengten 30 ^ N+1 ^ n+m vecwij<aer<a van de golflengten λ ^ t/mIn the embodiment according to Fig. 3, two reflection bars were used. Of the radiation beams emerging from the input fiber 40 with wavelengths X ^ to X, the wavelengths are 30 ^ N + 1 ^ n + m V <aer <a of the wavelengths λ ^ to
Via de lens 41 vallen de, nu evenwijdige, bundels met golflengten X t/m cp de golflengten-scheidingsspiegel 42 die de bundels met golflengten t/m nagenoeg ongehinderd (voor 90 a 95%) doorlaat en de bundels met golflengten λ N+1 t/m bijna geheel 35 reflecteert (voor ongeveer 99,9%). De doorgelaten bundels warden aan het reflectietralie 43 gereflecteerd en ruimtelijk gescheiden. Na doarlating door de spiegel 42 warden ze door de lens 41 gefocusseerd in de intreevlakken van de uitgangsvezels 1 t/m N.The now parallel beams with wavelengths X through cp fall through the lens 41 into the wavelength separating mirror 42 which transmits the beams with wavelengths up to and including virtually unimpeded (90 to 95%) and the beams with wavelengths λ N + 1 to almost completely reflects 35 (for about 99.9%). The transmitted beams were reflected at the reflection grating 43 and spatially separated. After passing through the mirror 42, they were focused through the lens 41 into the entry surfaces of the output fibers 1 to N.
8104124 PHN 10.151 48104124 PHN 10.151 4
De aan de golflengten-scheidingsspiegel 42 gereflecteerde bundels met golf lengten )\ N+1 t/m warden aan bet reflectietralie 44 gereflecteerd en ruimtelijk gescbeiden. Na reflectie aan de spiegel 42 worden ze door de lens 41 gefocusseerd in de intreevlakken van de 5 uitgangsvezels N+1 t/m N+M. Het spreekt vanzelf dat, net als in de uitvoeringsvorm volgens fig. 2, ook in de uitvoeringsvorm volgens fig. 3 het filter 14 van fig. 1 ontbreekt.The beams of wavelengths N + 1 to 1 reflected at the wavelength separating mirror 42 were reflected at the reflection grating 44 and spatially spaced. After reflection at the mirror 42, they are focused by the lens 41 into the entry surfaces of the 5 output fibers N + 1 to N + M. It goes without saying that, as in the embodiment according to Figure 2, the filter 14 of Figure 1 is also missing in the embodiment according to Figure 3.
10 15 20 25 30 35 810412410 15 20 25 30 35 8 104 124
Claims (3)
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8104124A NL8104124A (en) | 1981-09-07 | 1981-09-07 | Device for separating radiation beams emerging from an optical fiber. |
| DE19823232493 DE3232493A1 (en) | 1981-09-07 | 1982-09-01 | DEVICE FOR SEPARATING A BEAM OF OPTICAL FIBERS |
| CA000410671A CA1188552A (en) | 1981-09-07 | 1982-09-02 | Device for separating radiation beams which emerge from an optical fibre |
| SE8205021A SE8205021L (en) | 1981-09-07 | 1982-09-03 | DEVICE FOR SEPARATING THE RADIATOR FROM A OPTICAL FIBER |
| FR8215064A FR2512560B1 (en) | 1981-09-07 | 1982-09-03 | DEVICE FOR SEPARATING RADIATION BEAMS OUT OF OPTICAL FIBER |
| AU87984/82A AU552527B2 (en) | 1981-09-07 | 1982-09-03 | Beam splitting for optical fibre |
| IT23119/82A IT1152528B (en) | 1981-09-07 | 1982-09-03 | DIM SEPARATION DEVICE BEAMS OF EMERGING RADIATIONS FROM AN OPTICAL FIBER |
| GB08225190A GB2105489B (en) | 1981-09-07 | 1982-09-03 | Device for separating radiation beam components which issue from an optical fibre |
| JP57154755A JPS5860721A (en) | 1981-09-07 | 1982-09-07 | Apparatus for separating radiation beam emitted from optical fiber |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8104124 | 1981-09-07 | ||
| NL8104124A NL8104124A (en) | 1981-09-07 | 1981-09-07 | Device for separating radiation beams emerging from an optical fiber. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL8104124A true NL8104124A (en) | 1983-04-05 |
Family
ID=19838024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL8104124A NL8104124A (en) | 1981-09-07 | 1981-09-07 | Device for separating radiation beams emerging from an optical fiber. |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5860721A (en) |
| AU (1) | AU552527B2 (en) |
| CA (1) | CA1188552A (en) |
| DE (1) | DE3232493A1 (en) |
| FR (1) | FR2512560B1 (en) |
| GB (1) | GB2105489B (en) |
| IT (1) | IT1152528B (en) |
| NL (1) | NL8104124A (en) |
| SE (1) | SE8205021L (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3213839A1 (en) * | 1982-04-15 | 1983-10-27 | Philips Patentverwaltung Gmbh, 2000 Hamburg | OPTICAL WAVELENGTH MULTIPLEX OR -DEMULTIPLEX ARRANGEMENT |
| US4671603A (en) * | 1983-11-17 | 1987-06-09 | Pilkington P.E. Limited | Optical filters and multiplexing-demultiplexing devices using the same |
| CA1280921C (en) * | 1986-01-30 | 1991-03-05 | Masataka Shirasaki | Optical wavelength compounding/dividing device |
| US4736360A (en) * | 1986-07-21 | 1988-04-05 | Polaroid Corporation | Bulk optic echelon multi/demultiplexer |
| GB8718560D0 (en) * | 1987-08-05 | 1987-09-09 | Gec Avionics | Nuclear pulse simulation |
| GB2228799A (en) * | 1989-03-02 | 1990-09-05 | British Telecomm | Optical star coupler |
| US5457573A (en) * | 1993-03-10 | 1995-10-10 | Matsushita Electric Industrial Co., Ltd. | Diffraction element and an optical multiplexing/demultiplexing device incorporating the same |
| US20020191913A1 (en) * | 2001-06-08 | 2002-12-19 | Honeywell International Inc. | Apparatus and method for processing light |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5640802A (en) * | 1979-09-11 | 1981-04-17 | Delta Kogyo Kk | Remote operating device of back mirror |
| JPS5640804A (en) * | 1979-09-13 | 1981-04-17 | Nippon Telegr & Teleph Corp <Ntt> | Optical branching filter |
| DE3037712A1 (en) * | 1980-10-06 | 1982-05-13 | Siemens AG, 1000 Berlin und 8000 München | OPTICAL WAVELENGTH MULTIPLEX SYSTEM |
-
1981
- 1981-09-07 NL NL8104124A patent/NL8104124A/en not_active Application Discontinuation
-
1982
- 1982-09-01 DE DE19823232493 patent/DE3232493A1/en not_active Ceased
- 1982-09-02 CA CA000410671A patent/CA1188552A/en not_active Expired
- 1982-09-03 SE SE8205021A patent/SE8205021L/en unknown
- 1982-09-03 FR FR8215064A patent/FR2512560B1/en not_active Expired
- 1982-09-03 AU AU87984/82A patent/AU552527B2/en not_active Ceased
- 1982-09-03 GB GB08225190A patent/GB2105489B/en not_active Expired
- 1982-09-03 IT IT23119/82A patent/IT1152528B/en active
- 1982-09-07 JP JP57154755A patent/JPS5860721A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| SE8205021D0 (en) | 1982-09-03 |
| DE3232493A1 (en) | 1983-03-24 |
| AU8798482A (en) | 1983-03-17 |
| IT8223119A0 (en) | 1982-09-03 |
| CA1188552A (en) | 1985-06-11 |
| FR2512560B1 (en) | 1986-08-29 |
| IT1152528B (en) | 1987-01-07 |
| JPS5860721A (en) | 1983-04-11 |
| GB2105489A (en) | 1983-03-23 |
| SE8205021L (en) | 1983-03-08 |
| FR2512560A1 (en) | 1983-03-11 |
| AU552527B2 (en) | 1986-06-05 |
| GB2105489B (en) | 1985-09-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A1B | A search report has been drawn up | ||
| A85 | Still pending on 85-01-01 | ||
| BV | The patent application has lapsed |