EP1405116A1 - Kopplung an in leiterplatten eingebettete lichtleiter - Google Patents
Kopplung an in leiterplatten eingebettete lichtleiterInfo
- Publication number
- EP1405116A1 EP1405116A1 EP02752996A EP02752996A EP1405116A1 EP 1405116 A1 EP1405116 A1 EP 1405116A1 EP 02752996 A EP02752996 A EP 02752996A EP 02752996 A EP02752996 A EP 02752996A EP 1405116 A1 EP1405116 A1 EP 1405116A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- optical
- guide elements
- layer
- optical layer
- waveguides
- 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.)
- Withdrawn
Links
- 230000008878 coupling Effects 0.000 title claims description 13
- 238000010168 coupling process Methods 0.000 title claims description 13
- 238000005859 coupling reaction Methods 0.000 title claims description 13
- 230000003287 optical effect Effects 0.000 claims abstract description 72
- 238000004049 embossing Methods 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000005755 formation reaction Methods 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 239000004020 conductor Substances 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000013307 optical fiber Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004080 punching 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/4228—Passive alignment, i.e. without a detection of the degree of coupling or the position of the elements
- G02B6/423—Passive alignment, i.e. without a detection of the degree of coupling or the position of the elements using guiding surfaces for the alignment
-
- 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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/13—Integrated optical circuits characterised by the manufacturing method
- G02B6/138—Integrated optical circuits characterised by the manufacturing method by using polymerisation
-
- 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
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0274—Optical details, e.g. printed circuits comprising integral optical means
Definitions
- the invention relates to the coupling to light guides embedded in printed circuit boards.
- a central task in this technology is the coupling of the components with optical transmitters and receivers with the optical conductors, which, due to the small dimensions of the optical fibers, requires positioning accuracy that cannot be achieved with conventional placement machines.
- the correction of positioning errors caused by the surface tension of the solder in the soldering technology of the electrical connections is eliminated.
- the published patent application DE 19917554 describes a solution in which hollow bodies are embedded parallel to the surface and determine the position of optical couplers to which guide pins are attached.
- the optical couplers convert the signals into electrical signals or redirect the light to a converter located on the surface.
- the embedding of the hollow bodies and the subsequent milling out are still relatively complex.
- the present invention describes another solution that is less expensive.
- a circuit board in an optical layer of optical waveguides, which are produced by an embossing process and are coupled in and out vertically through beveled and mirrored ends.
- mechanical guide marks are produced with the stamping process, which preferably serve as guide holes for MT pins.
- Optical waveguides are used, the ends of which are provided with mirror surfaces at a 45 s angle. These are described, for example, in the article "Monomode Polymer Waveguides with Integrated Mirrors" by R. Wiesmann, S. Kalveram, A. Neyer; Proc. 22nd Europ. Conf. on Optical Communications (ECOC 96), vol. 2 pp.265-8, Oslo 1996 (ISBN 8242304181). Other angles are also possible in order to effect radiation at right angles to the optical position.
- a transparent carrier film 10 for example 200 ⁇ m thick, is used, in which channels 11 for the waveguides are produced by means of an embossing process. Bevels for mirrors 12 are provided at the ends of the channels. The bevels are metallized.
- the channels 11 are then filled, the filling, of course, also being transparent and having a higher refractive index than the embossed material. Thereafter, a transparent film with a smaller refractive index than the filling and of, for example, 100 ⁇ m thickness is applied as cover layer 13, so that the filled channels 11 can serve as waveguides.
- FIG. 2 shows a top view in the direction of the arrow A drawn in FIG. 1.
- the channels 11 can be tapered downwards in order to avoid undercuts when embossing; this effect is clearly shown.
- D denotes the grid spacing of the light guides, which is, for example, 250 ⁇ m with a width of the light guides of 100 ⁇ m, that is to say an approximately square cross section.
- reference marks 24 near the ends 12 of the optical conductors are now also embossed in addition to the channels 11 which make up the optical conductors after filling. Their position relative to the ends 12 of the optical conductor is determined by the high manufacturing accuracy of the embossing tool and can be produced with an accuracy that is significantly better than the diameter of an optical conductor.
- these reference marks are used to make vertical holes 22 of a predetermined diameter in the optical position.
- the diameter of 0.7 mm is preferably used by mechanical guide pins, which are known, for example, from MT plug connectors.
- Either the reference marks can be scanned optically, for example in the shape of a cross and with a V-shaped cross section, in order to provide a precise and optically recognizable center which positions a drill via an optical positioning system. You can choose from the direction of the top layer, i.e. the top, or be drilled from the bottom. It depends on the properties of the drilling system whether this reference mark is only embossed or also coated with the metallization used for the mirroring. When using a double-sided embossing tool, the reference mark can also be created from the underside of the carrier film 10 and then, for example in the form of a cone, can contribute to guiding the drill when drilling from below.
- Fig. 2 After the guide holes 22 have been made in the optical layer, this can be introduced into a printed circuit board by known methods. The result is shown in Fig. 2.
- the optical layer is applied to a lower layer 30 and is covered by an upper layer 31a, 31b.
- a gap 32 in the upper side, called an exemption, means that the optical position at the mirrored ends 12 of the optically see waveguides accessible.
- the clearance 32 is so large that the guide holes 22, which are only indicated in FIG. 3 by their walls 23a, 23b, are accessible.
- couplers that are inserted from above. 4 schematically shows the part of a coupler 40 to be inserted into the relief 32. Guide pins 41 are located on the underside 44 in the direction of insertion. Between these ends, light guides 42 terminate. One end of the light guides ends on the surface of the bottom 44, the other in transmit or receive transducers 43. These are then (not shown) connected via electrical connections to amplifier circuits and electrical contacts, which are generally in the form of solder contacts.
- the guide pins 41 of the couplers are at the same distance as the guide holes 22 in the optical position. Normally, both the ends of the optical conductors in the optical position and the ends of the optical conductors in the coupler lie symmetrically on the connecting line of the guide holes 22 or guide pins 41 and are at the same distance in the optical position and in the coupler. This is achieved, for example, by providing trenches in a molded part for both the optical conductors and the guide pins. After inserting the optical conductor, a second, usually the same, molded part is placed on top, and this part of the coupler is closed, usually by gluing. The surface in which the optical conductors emerge is then polished in order to reduce the transition losses. The guide pins are then inserted into the holes caused by the trenches.
- the hardness of the optical layer which consists of polycarbonate, for example, is sufficient to place the guide pins on the
- the guide pins preferably have only a length protruding from the underside, which corresponds to the thickness of the optical layer, that is to say 0.3 mm in the example. In this case, an exemption at the location of the guide holes in the lower layer 30 is not necessary. Alternatively, however, a relatively small clearance of, for example, 2 mm diameter can be provided in the lower layer 30 around each of the guide holes (not shown in FIG. 3). In this case, the guide pins in the coupler are made substantially longer than the thickness of the optical layer and are preferably provided with a clear chamfer at the end or are conical.
- the guide holes uses an embossing material, in which the guide holes, in particular cylindrical ones, are embossed through the entire material thickness. This process is also called “stamping".
- the cover layer 13 is now not completely continuous, but is also provided with holes by embossing or punching, which are at least as much larger than the guide holes as the positioning accuracy during the subsequent application of the cover layer. This is, for example, 0.1 mm, so that the holes in the cover layer have a diameter of 0.95 mm in order to safely release the embossed holes in the carrier film.
- the guide pins on the couplers 40 are designed as before and in this case are on the first third, i.e. the thickness corresponding to the top layer, not performed.
- the couplers are finally attached using other means.
- These can be screw or adhesive connections.
- the release can be filled with a self-polymerizing optical adhesive which at the same time penetrates into the transition layer between the underside of the coupler and the top of the optical layer and thus improves the coupling.
- an index-adjusted gel can also be used here and in the cases described below.
- the coupler can be connected to the circuit board via detachable contacts, the direction of insertion being perpendicular to the surface of the circuit board.
- the optical connections are aligned appropriately by the guide elements on the coupler or in the optical position.
- the couplers are either screwed, glued or otherwise permanently attached.
- the releasable electrical contact connection can be secured at the same time.
- a slight trapezoidal shape in cross-section ensures that the edges grip well when positioned.
- a trench with a triangular cross-section can also be useful if the materials are selected appropriately.
- two guide elements can be provided on each side, which in particular move together to form a cruciform structure with a rectangular, trapezoidal or triangular cross section of the legs. In the extreme, a structure is created in the form of a pyramid.
- the formation on the optical position and the recess in the coupler can also be provided without further notice.
- the latter has the advantage that polishing the surface with the optically active parts is much easier.
- the mechanical guide elements for the optical position, it is possible to provide the mechanical guide elements as formings as well as recesses. The latter are achieved by deepening the embossing stamp.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optical Integrated Circuits (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10132794A DE10132794A1 (de) | 2001-07-06 | 2001-07-06 | Kopplung an in Leiterplatten eingebettete Lichtleiter |
| DE10132794 | 2001-07-06 | ||
| PCT/DE2002/002507 WO2003005094A1 (de) | 2001-07-06 | 2002-07-08 | Kopplung an in leiterplatten eingebettete lichtleiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1405116A1 true EP1405116A1 (de) | 2004-04-07 |
Family
ID=7690832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02752996A Withdrawn EP1405116A1 (de) | 2001-07-06 | 2002-07-08 | Kopplung an in leiterplatten eingebettete lichtleiter |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20040258345A1 (de) |
| EP (1) | EP1405116A1 (de) |
| JP (1) | JP2004533024A (de) |
| CN (1) | CN1688912A (de) |
| CA (1) | CA2453045A1 (de) |
| DE (1) | DE10132794A1 (de) |
| WO (1) | WO2003005094A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT503585B1 (de) | 2006-05-08 | 2007-11-15 | Austria Tech & System Tech | Leiterplattenelement sowie verfahren zu dessen herstellung |
| TW201211606A (en) * | 2010-09-03 | 2012-03-16 | Univ Nat Central | Optical transmission module with optical waveguide structure |
| US8818144B2 (en) * | 2011-01-25 | 2014-08-26 | Tyco Electronics Corporation | Process for preparing an optical interposer for waveguides |
| CN104185799B (zh) | 2012-02-03 | 2017-06-30 | 梅卡雷斯系统有限责任公司 | 补偿线路板上的光学传感器 |
| FI20135200L (fi) * | 2013-03-01 | 2014-09-02 | Tellabs Oy | Sähkölaite |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19711121A1 (de) * | 1997-03-05 | 1998-10-01 | Siemens Ag | Verzweigende Lichtwellenleiteranordnung |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59306756D1 (de) * | 1992-03-07 | 1997-07-24 | Minnesota Mining & Mfg | Verfahren zum Herstellen von Bauelementen für Lichtwellenleiternetze und nach diesem Verfahren hergestellte Bauelemente |
| SE508763C2 (sv) * | 1995-11-29 | 1998-11-02 | Ericsson Telefon Ab L M | Förfarande och anordning för chipmontering |
| DE19709842C1 (de) * | 1997-02-28 | 1998-10-15 | Siemens Ag | Elektrooptische Koppelbaugruppe |
| US5929728A (en) * | 1997-06-25 | 1999-07-27 | Hewlett-Packard Company | Imbedded waveguide structures for a microwave circuit package |
| GB2333853B (en) * | 1998-01-31 | 2002-03-27 | Mitel Semiconductor Ab | Fiber optic module |
| GB2334592B (en) * | 1998-02-19 | 2002-11-13 | Mitel Semiconductor Ab | Adapter for coupling optical and electronic circuits |
| JP3326390B2 (ja) * | 1998-07-07 | 2002-09-24 | 日本電信電話株式会社 | 再生専用多重ホログラムカード |
| DE19838519A1 (de) * | 1998-08-25 | 2000-03-02 | Bosch Gmbh Robert | Leiterplatte und Verfahren zur Herstellung |
| US6236793B1 (en) * | 1998-09-23 | 2001-05-22 | Molecular Optoelectronics Corporation | Optical channel waveguide amplifier |
| TW460717B (en) * | 1999-03-30 | 2001-10-21 | Toppan Printing Co Ltd | Optical wiring layer, optoelectric wiring substrate mounted substrate, and methods for manufacturing the same |
| TW451084B (en) * | 1999-06-25 | 2001-08-21 | Toppan Printing Co Ltd | Optical-electro wiring board, mounted board, and manufacturing method of optical-electro wiring board |
| JP3750444B2 (ja) * | 1999-10-22 | 2006-03-01 | セイコーエプソン株式会社 | 半導体装置の製造方法 |
| US20010028771A1 (en) * | 2000-03-02 | 2001-10-11 | Claes Johansson | Protective cover for an optical transceiver |
| DE10037902C2 (de) * | 2000-08-03 | 2002-08-01 | Infineon Technologies Ag | Optisches bidirektionales Sende- und Empfangsmodul mit einem Stiftkörper mit integriertem WDM-Filter |
| JP3764640B2 (ja) * | 2000-09-26 | 2006-04-12 | 京セラ株式会社 | 光モジュール及びその製造方法 |
| WO2002075785A2 (en) * | 2001-03-16 | 2002-09-26 | Peregrine Semiconductor Corporation | Coupled optical and optoelectronic devices, and method of making the same |
-
2001
- 2001-07-06 DE DE10132794A patent/DE10132794A1/de not_active Withdrawn
-
2002
- 2002-07-08 WO PCT/DE2002/002507 patent/WO2003005094A1/de not_active Ceased
- 2002-07-08 CA CA002453045A patent/CA2453045A1/en not_active Abandoned
- 2002-07-08 JP JP2003511014A patent/JP2004533024A/ja not_active Withdrawn
- 2002-07-08 CN CN02813613.6A patent/CN1688912A/zh active Pending
- 2002-07-08 EP EP02752996A patent/EP1405116A1/de not_active Withdrawn
- 2002-07-08 US US10/493,389 patent/US20040258345A1/en not_active Abandoned
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19711121A1 (de) * | 1997-03-05 | 1998-10-01 | Siemens Ag | Verzweigende Lichtwellenleiteranordnung |
Non-Patent Citations (2)
| Title |
|---|
| See also references of WO03005094A1 * |
| STEFAN KALVERAM AND ANDREAS NEYER: "Precision moulding techniques for optical waveguide devices", PROCEEDINGS OF THE SPIE, PRECISION PLASTIC OPTICS FRO OPTICAL STORAGE, DISPLAYS, IMAGING, AND COMMUNICATIONS, vol. 3135, 30 July 1997 (1997-07-30), pages 2 - 11, XP009013511 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004533024A (ja) | 2004-10-28 |
| WO2003005094A1 (de) | 2003-01-16 |
| DE10132794A1 (de) | 2003-01-30 |
| CN1688912A (zh) | 2005-10-26 |
| US20040258345A1 (en) | 2004-12-23 |
| CA2453045A1 (en) | 2003-01-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| 17Q | First examination report despatched |
Effective date: 20040414 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ILFA GMBH Owner name: INFINEON TECHNOLOGIES AG Owner name: SIEMENS AKTIENGESELLSCHAFT |
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| 17Q | First examination report despatched |
Effective date: 20040414 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ILFA GMBH Owner name: SIEMENS AKTIENGESELLSCHAFT |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20101019 |