WO1992020004A1 - Optical concentrator matrix, optical assembly containing same, and method for producing said matrix - Google Patents
Optical concentrator matrix, optical assembly containing same, and method for producing said matrix Download PDFInfo
- Publication number
- WO1992020004A1 WO1992020004A1 PCT/FR1992/000384 FR9200384W WO9220004A1 WO 1992020004 A1 WO1992020004 A1 WO 1992020004A1 FR 9200384 W FR9200384 W FR 9200384W WO 9220004 A1 WO9220004 A1 WO 9220004A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- matrix
- optical
- concentrators
- elements
- mold
- Prior art date
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0012—Arrays characterised by the manufacturing method
- G02B3/0031—Replication or moulding, e.g. hot embossing, UV-casting, injection moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
- B29C33/3857—Manufacturing moulds, e.g. shaping the mould surface by machining by making impressions of one or more parts of models, e.g. shaped articles and including possible subsequent assembly of the parts
- B29C33/3878—Manufacturing moulds, e.g. shaping the mould surface by machining by making impressions of one or more parts of models, e.g. shaped articles and including possible subsequent assembly of the parts used as masters for making successive impressions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0025—Applying surface layers, e.g. coatings, decorative layers, printed layers, to articles during shaping, e.g. in-mould printing
- B29C37/0028—In-mould coating, e.g. by introducing the coating material into the mould after forming the article
- B29C37/0032—In-mould coating, e.g. by introducing the coating material into the mould after forming the article the coating being applied upon the mould surface before introducing the moulding compound, e.g. applying a gelcoat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/0074—Production of other optical elements not provided for in B29D11/00009- B29D11/0073
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0009—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0038—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ambient light
- G02B19/0042—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ambient light for use with direct solar radiation
-
- 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
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
-
- 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
-
- 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
- G02B6/4249—Packages, e.g. shape, construction, internal or external details comprising arrays of active devices and fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/12—Light guides
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0012—Arrays characterised by the manufacturing method
- G02B3/0025—Machining, e.g. grinding, polishing, diamond turning, manufacturing of mould parts
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
- G02B3/0056—Arrays characterized by the distribution or form of lenses arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses
Definitions
- OPTICAL CONCENTRATOR MATRIX OPTICAL ASSEMBLY COMPRISING SUCH A MATRIX, AND METHOD OF MANUFACTURING THE MATRIX
- the invention relates to a linear or b di ensi onal matrix of optical concentrators, to an optical transmission or reception assembly comprising such a matrix.
- the invention also relates to a method of manufacturing such a matrix.
- the Applicant has encountered, in a completely different field since it is the transmission of light by optical fibers, the coupling of optical fibers to the end components.
- the end components can be either light sources (emitters) or receivers.
- a solution generally adopted and giving a result considered to date as the least bad, consists in placing the component directly at the end of the fiber. This supposes an acceptance of optical losses, namely loss of digital aperture at the input, attenuation in the ratio of the output surfaces. Conventional dioptric systems are rarely used because they generally have digital apertures that are too small compared to those of optical fibers.
- a solution has sometimes been used in the case, for example, of fibers read by a photomu Lt ip L i ca teu r multi-anode.
- a saphi r bile a material with a high optical index, is interposed between the two systems to improve coupling.
- this method presupposes the individual placement of links between the fibers and the receptors, which becomes complex or tedious as soon as the number is large.
- the first is that the digital aperture is reduced.
- the second is that there are generally no such size elements corresponding to a single fiber.
- tapping reduces not only the image of the end of a fiber, but also the entire pitch of the image of the fibers, and therefore imposes a very small step on the end components.
- Another example shows a coupling effort between optical fiber and avalanche photodiode.
- the component proposed in the trade uses an optical fiber element of 300 H in diameter to make the connection between the photodiode of the same diameter and the front face of the box which contains it.
- this device Compared to the simple positioning of the fiber against the window of the box, this device allows better coupling with the fiber of which one would like to measure the output signal, but remains penalizing due to a weak numerical aperture and a low ratio between The surfaces of the two fibers (9% for a 1 mm fiber).
- the present invention overcomes these problems. It firstly relates to a linear or two-dimensional matrix of concentrators capable of being connected to optical fibers, comprising a set of optical concentrators and mainly characterized in that the concentrators are optically independent reflectors, with symmetry of revolution, filled with an optical material transparent to Light with a refractive index n close to that of the core of the fibers.
- the transparent optical material is chosen so that the refractive index n is greater than 1.56.
- the concentrators are joined together to form the matrix, by a retaining material.
- the holding material is a polymerized resin.
- the concentrators also comprise a material reflecting which coats the internal wall of said concentrators and which forms an optical separation between the retaining material and the transparent optical material. According to another characteristic of
- the reflective material is constituted by a metallic layer.
- the concentrators have a shape with symmetry of revolution generated by a straight generator or curved line.
- the invention also relates to an optical transmission or detection assembly comprising a matrix of optical fibers, a matrix of transmitters or receivers, mainly characterized in that it further comprises means of optical coupling between the matrix of optical fibers and the matrix of transmitters or receivers, and in that these coupling means comprise a matrix of concentrators formed of optically independent retro-reflectors with symmetry of revolution, filled with an optical material transparent to Light, refractive index close to that of the core of optical fibers.
- the optical assembly further comprises an optical contact material of optical index suitable for reducing Fresnel reflections and avoiding total reflections on the exit face of the concentrators, this material being placed so as to ensure contact between the matrix of emitters or receivers and the matrix of concentrators, and between the matrix of concentrators and the matrix of optical fibers.
- the concentrators are joined together by a retaining material to form the matrix.
- the holding material is a polymerized resin.
- the concentrators further include a reflective material which coats the interior wall and which forms a separation between the retaining material and the transparent optical material.
- the invention also relates to a method for manufacturing a linear or two-dimensional matrix Le of optical concentrators intended to be coupled to a matrix of optical fibers, principally characterized in that it comprises the following steps: producing a base mold comprising a matrix arrangement of male elements with symmetry of revolution, - producing a counter-mold of the base mold to obtain a matrix arrangement of female elements of shape complementary to that of the male elements,
- the invention also relates to a method for manufacturing a linear or bi-monthly matrix of optical concentrators intended to be coupled to a matrix of optical fibers, mainly characterized in that it comprises the following steps: a base mold comprising a matrix arrangement of male elements, with symmetry of revolution, making a counter-mold of the base mold to obtain a matrix arrangement of female elements having a shape complementary to that of the male elements, pouring a material transparent optic with a refractive index n close to that of the core of the fibers in the counter-mold, leaving an additional thickness to obtain a matrix of optical elements, after hardening of the optical material and demolding, possibly depositing a material in a thin layer to ensuring the optical separation between the different elements, pouring a retaining material on the matrix obtained to ensure mechanical cohesion between the different optical elements,
- the material with a refractive index n is a polymerized optical resin whose index n is greater than 1.56.
- the holding material is a polymerized resin.
- the deposition in a thin layer consists in producing a metaL li sat ion.
- FIG. 1 represents the diagram of a bi di mensi matrix onnel Le of optical concentrators according to the invention
- FIG. 2 represents diagrams corresponding to the various stages of the manufacturing process of a matrix according to a first embodiment
- FIG. 3 represents diagrams corresponding to the various stages of realization of a second embodiment of the method for manufacturing the matrix in accordance with the invention
- FIG. 4 represents the diagram of an optical reception assembly in accordance with the invention
- FIG. 5 represents the diagram of an optical transmission assembly in accordance with the invention.
- FIG. 1 shows the diagram of a matrix of concentrators according to the invention. This diagram represents a bi di ensi onal matrix provided with a set of optical concentrators 1.
- concentrators are, in accordance with the invention, optically independent reflectors, with revolution symmetry.
- these reflectors have a shape such that they are generated by a generator. straight or curved line. They can therefore have a conical or paraboloid shape.
- the retro-reflectors are filled with a material with an optical 2 transparent to light, with a refractive index n close to that of the core of the optical fibers with which the matrix produced can be coupled.
- the concentrators are joined together by a material 3.
- the retaining material used 3 consists for example of a polymerized resin which may, depending on the case, be rigid or not.
- the matrix represented in FIG. 1 comprises a set of optically independent systems, these systems being the concentrators
- the size, number and pitch of which may be any, but will generally be chosen to be identical to those imposed by the matrix of end components or the matrix of optical fibers between which they will be coupled, as will be explained in the following.
- the internal wall of the concentrators providing the separation between the retaining material 3 and the transparent optical material 2 is coated with a reflective layer protected by the optical material filling the concentrators.
- This protection is similar to the protection provided by the low index coating constituted by the sheath of an optical fiber on which the total reflections of the light propagated for the heart of the fiber occur, the place in which the light.
- the hub matrix is an extension of the optical fiber.
- optical fibers comprise a core with a relatively high refractive index in which light propagates and a sheath surrounding this core with a lower refractive index, serving as a light guide and protecting the core of the fibers.
- the core of which is constituted by transparent materials of amorphous type, such as for example polymethyl methacrylate known under the abbreviation of PMMA
- the refractive index is relatively low and is found in La range from 1.48 to 1.50.
- the sheath with a low index polymer which is Le po Lyméthac rylate de 2,2,2 t ri f Luoréthy Le whose Refractive index is 1.41.
- the filling material of the concentrators may therefore be, according to this embodiment of the optical fibers, polymethyl methacrylate.
- polystyrene In the case of optical fibers comprising a core consisting of a polymer of a compound such as styrene whose refractive index is relatively high and of a sheath consisting for example of PMMA, of an acetate polymer vinyl or a fluorinated derivative of Vinyl acetate, the refractive index of which is relatively low, polystyrene is generally used as filling material, the refractive index of which is 1.58-1.62.
- the filling material of the concentrators may in this case be polystyrene.
- the filling material will be chosen such as its refractive index is close to that of the core fiber and will preferably be chosen a material whose index 'of refraction is greater than 1.56.
- FIG. 2 shows schematically the different stages of a process for manufacturing such a matrix, in accordance with the invention.
- Step _a_ of the process consists in making a basic mold.
- This mold comprises a matrix arrangement of male elements 11, with symmetry of revolution, which can end for example with a stud 12.
- these elements 11 is generated by a straight generator or curved line.
- these male forms of the concentrators can be produced in a metallic material or not with an optical quality of the surface. These shapes can be obtained by machining, polishing and duplicating.
- Step _b_ then consists in making a counter-mold 13 of the base mold by using for example a fluid resin, flexible after hardening and perfectly reproducing the shapes and the states of the surface of the mold.
- This resin can be a silicone resin, for example an RTV.
- This counter-mold will be used for the duplication of matrices but, by its very nature. will have a lifetime Limited by possible deterioration during work.
- step c which constitutes a matrix arrangement of female elements of hollow shape complementary to that of the male elements of the base mold 10.
- the method consists in carrying out step c.
- This step _ç_ consists of pouring a material into the counter mold to obtain a new male mold.
- the _d_ process step then consists in casting between the male elements 20 a holding material for ensuring a mechanical cohesion thereafter between the various optical elements q U e will constitute Concentrators.
- This step _d_ further comprises demolding after hardening of the material, so as to obtain a matrix 21 of female elements of hollow shape.
- Lement at step _ç_ q U i consists in depositing a material inside the hollow shapes of the matrix 21, this deposit making it possible to obtain a coating in a thin layer of the interior surface.
- Step _f_ of the process consists in pouring a transparent optical material of index n, chosen so as to be close to that of the core of the optical fibers with which the matrix of concentrators obtained will be coupled.
- This step _f_ therefore consists in pouring this material of index n over the thin separation layer, so as to fill the hollow shapes. of the matrix obtained after demolding and obtaining an additional thickness 24.
- Step _g_ of the method consists in machining the upper and lower faces of the matrix obtained in step _f_ so as to remove the pins 12 and the excess thickness 24 of the optical material of index n.
- This step _ç_ results in the production of a concentrator matrix as shown for example in FIG. 1.
- FIG. 3 illustrates the different stages of a manufacturing process according to the invention, according to a second embodiment.
- the first two steps __ and b_ are identical to the previous steps shown in FIG. 2.
- a basic mold is first produced in step _a_ comprising a support 10 and male elements 11 which can end, for example, with a stud 12.
- Step _b_ consists in making a counter-mold 13 made up of the set of female elements of hollow shape but complementary to the male elements.
- Step _ç_ in accordance with this embodiment, consists in pouring into the counter-mold obtained at the end of step _b_ a transparent optical material of index n close to that of the core of the fibers with which the matrix of concentrators to be carried out will be coupled.
- a transparent optical resin with a high optical index which is greater than 1.56 use will be made, for example, of a transparent optical resin with a high optical index which is greater than 1.56.
- Step __ which consists in depositing a material in a thin layer over the hollow shapes obtained after demolding, so as to ensure an optical separation between the different elements 30.
- the deposition of this layer can be carried out by deposition techniques used in integrated optics .
- Step _ ⁇ _ consists of pouring a retaining material 33 onto the matrix obtained after depositing
- the thin layer 32 This retaining material will make it possible to ensure mechanical cohesion between the different optical elements that will constitute the concentrators obtained.
- Step _f_ finally consists in machining the upper and lower faces of the matrix obtained at the end of step _e_ so as to remove the pins 12 and the additional thickness 31.
- This step _f_ thus makes it possible to obtain a matrix of concentrators 34 as shown in Figure 1.
- Step _ç_ actually consists of performing surface treatments allowing optical reflections on the internal surface of the concentrators.
- a thin layer deposit which will preferably be a metal deposit, a low index deposit, and which may further comprise mu lt idiéLect ri que s treatments or a combination of these various treatments .
- these deposits provide optical separation between the different elements, that is to say between the different concentrators, and make these concentrators optically independent.
- these various surface treatments can be eliminated. The objective to be reached is however to obtain a total reflection inside these different concentrators in order to avoid any risk of crosstalk between the different channels thus formed.
- the base molds may for example be metallic.
- the counter-mold could for example be an RTV resin in the case of the second embodiment and teflon in the case of the first embodiment.
- FIG. 4 illustrates the simplified diagram of an optical reflection assembly.
- this assembly only illustrates an optical fiber of a matrix assembly, not shown, coupled to a concentrator 40 of a matrix, as described with reference to FIG. 1, and d 'A receiver 60 belonging to a reception matrix not shown.
- the optical assembly therefore includes the optical coupling means between an optical fiber matrix represented by the optical fiber 50 and a reception matrix represented by the receiver 60.
- these coupling means comprise a matrix of concentrators represented by Concentrator 40, this concentrator being a reflector with symmetry of revolution generated by a straight generator or curved line and filled with an optical material transparent to light, with a refractive index close to that of the core 52 of the fiber 50.
- the filling material of the concentrator 40 bears the reference 41.
- the optical assembly further comprises an optical contact material 70 of optical index adapted to reduce Fresnel reflections and avoid total reflections from the exit surface of the concentrators.
- This material 70 is placed so as to ensure contact between the matrix of receptors and the matrix of concentrators.
- this material 70 is placed between the receiver 60 and a face which is the face of the smallest diameter of the cone of the concentrator 40.
- the optical assembly shown in this figure 4 further comprises an optical contact material 80 of suitable optical index of the same kind as the material bearing the reference 70 and ensuring the same function. This material 80 makes contact between the larger diameter face of the cone 40 and the end of the fiber 50.
- FIG. 5 there is shown an optical transmission assembly according to the invention.
- This diagram is a simplified diagram such as that which has been represented in FIG. 4.
- the transmitter 90 belongs to a matrix d emission, as well as
- the concentrator 40 belongs to a matrix of concentrators as shown in FIG. 1 and the fiber 50 can belong to a matrix of optical fibers.
- This diagram actually shows that
- the hub matrix can be used " completely symmetrically, either in reception as shown in FIG. 4, or in transmission as shown in FIG. 5 in an optical assembly.
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4509827A JPH06507027A (en) | 1991-04-29 | 1992-04-29 | Concentrator matrices, optical arrays incorporating such matrices and methods of manufacturing matrices |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR91/05254 | 1991-04-29 | ||
FR9105254A FR2675910B1 (en) | 1991-04-29 | 1991-04-29 | MATRIX OF OPTICAL CONCENTRATORS, OPTICAL ASSEMBLY COMPRISING SUCH A MATRIX, AND METHOD OF MANUFACTURING THE MATRIX. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992020004A1 true WO1992020004A1 (en) | 1992-11-12 |
Family
ID=9412352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1992/000384 WO1992020004A1 (en) | 1991-04-29 | 1992-04-29 | Optical concentrator matrix, optical assembly containing same, and method for producing said matrix |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0582640A1 (en) |
JP (1) | JPH06507027A (en) |
FR (1) | FR2675910B1 (en) |
WO (1) | WO1992020004A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015118131A1 (en) * | 2014-02-07 | 2015-08-13 | Cnam - Conservatoire National Des Arts Et Metiers | Method for manufacturing vertical optical coupling structures |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SG96617A1 (en) * | 2000-04-27 | 2003-06-16 | Sony Corp | Optical device, optical system, method of production of same, and mold for production of same |
DE10065197A1 (en) * | 2000-12-20 | 2002-07-11 | Euromicron Werkzeuge Gmbh | imaging optics |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2203985A1 (en) * | 1972-10-20 | 1974-05-17 | Thomson Csf | |
DE2916741A1 (en) * | 1979-04-25 | 1980-11-06 | Doering Geb Thurnhofer Karolin | Reflector system for solar cell generator - uses hollow reflectors with smaller and larger parts connected by neck to deliver parallel beam |
US4483311A (en) * | 1981-09-21 | 1984-11-20 | Whitaker Ranald O | Solar power system utilizing optical fibers, each fiber fed by a respective lens |
DE3934301A1 (en) * | 1988-10-14 | 1990-04-19 | Corning Inc | ONE-PIECE OPTICAL ELEMENT AND METHOD FOR THE PRODUCTION THEREOF |
-
1991
- 1991-04-29 FR FR9105254A patent/FR2675910B1/en not_active Expired - Fee Related
-
1992
- 1992-04-29 EP EP92910879A patent/EP0582640A1/en not_active Withdrawn
- 1992-04-29 WO PCT/FR1992/000384 patent/WO1992020004A1/en not_active Application Discontinuation
- 1992-04-29 JP JP4509827A patent/JPH06507027A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2203985A1 (en) * | 1972-10-20 | 1974-05-17 | Thomson Csf | |
DE2916741A1 (en) * | 1979-04-25 | 1980-11-06 | Doering Geb Thurnhofer Karolin | Reflector system for solar cell generator - uses hollow reflectors with smaller and larger parts connected by neck to deliver parallel beam |
US4483311A (en) * | 1981-09-21 | 1984-11-20 | Whitaker Ranald O | Solar power system utilizing optical fibers, each fiber fed by a respective lens |
DE3934301A1 (en) * | 1988-10-14 | 1990-04-19 | Corning Inc | ONE-PIECE OPTICAL ELEMENT AND METHOD FOR THE PRODUCTION THEREOF |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015118131A1 (en) * | 2014-02-07 | 2015-08-13 | Cnam - Conservatoire National Des Arts Et Metiers | Method for manufacturing vertical optical coupling structures |
CN106461881A (en) * | 2014-02-07 | 2017-02-22 | 法国国立工艺学院 | Method for manufacturing vertical optical coupling structures |
US10073228B2 (en) | 2014-02-07 | 2018-09-11 | CNAM—Conservatoire National des Arts Et Metiers | Process for manufacturing vertical optical coupling structures |
Also Published As
Publication number | Publication date |
---|---|
FR2675910B1 (en) | 1993-07-16 |
JPH06507027A (en) | 1994-08-04 |
EP0582640A1 (en) | 1994-02-16 |
FR2675910A1 (en) | 1992-10-30 |
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