# US 2022/0035087 A1 · Communication system comprising an optical fiber assembly, a modulated light signal receiver and a telescope

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- Number: US 2022/0035087 A1
- Document ID: US20220035087A1
- Status: Published application
- Kind: A1
- Application number: 17/599,427
- Filed: 2020-03-24
- Published: 2022-02-03
- Earliest claimed: 2019-03-29
- Assignees: Oledcomm
- Applicants: Oledcomm
- Inventors: Juan Camillo VALENCIA-ESTRADA; Jorge GARCIA-MARQUEZ; Alejandro ESPINOZA-GARCIA
- Web page: https://patentgrep.com/patent/US20220035087A1

## CPC

- G02B 6/0008: {the light being emitted at the end of the fibre}
- G02B 6/262: {Optical details of coupling light into, or out of, or between fibre ends, e.g. special fibre end shapes or associated optical elements}
- G02B 6/43: Arrangements comprising a plurality of opto-electronic elements and associated optical interconnections
- G02B 19/0009: {having refractive surfaces only}
- G02B 19/0014: {at least one surface having optical power}
- H04B 10/116: Visible light communication
- H04B 10/25: Arrangements specific to fibre transmission
- H04B 10/50: Transmitters
- H04B 10/60: Receivers
- B60Q 3/44: Spotlighting, e.g. reading lamps
- B60Q 3/62: using light guides
- G02B 3/08: with discontinuous faces, e.g. Fresnel lens {(diffractive Fresnel lenses G02B5/1876)}
- G02B 6/29364: {Cascading by a light guide path between filters or filtering operations, e.g. fibre interconnected single filter modules}
- G02B 6/32: having lens focusing means {positioned between opposed fibre ends (with lens being an integral part of the single fibre end G02B6/262)}
- G02B 6/4246: {Bidirectionally operating package structures}
- G02B 6/4298: {coupling with non-coherent light sources and/or radiation detectors, e.g. lamps, incandescent bulbs, scintillation chambers}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- H04B: TRANSMISSION
- B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL

## Abstract

A system includes an optical fiber assembly, a receiver and a telescope, the receiver being positioned at a receiving end of the optical fiber assembly, the telescope being positioned at a collecting end, the receiver being arranged to receive uplink modulated light signals collected by the telescope and travelling through the optical fiber assembly, the telescope comprising an optical concentrator having an inlet face and an outlet face with a surface area smaller than that of the inlet face, the telescope further including a gradient-index lens dispose d coaxially with respect to the optical concentrator so that an inlet face of the gradient-index lens extends opposite the outlet face of the optical concentrator, the collecting end of the optical fiber assembly opening out opposite an outlet face of the gradient-index lens.

## Claims

### Claim 1

A communication system comprising an optical fiber assembly, a modulated light signal receiver and a telescope, the modulated light signal receiver being positioned at a receiving end of the optical fiber assembly, the telescope being positioned at a collecting end of the optical fiber assembly, the modulated light signal receiver being arranged to receive uplink modulated light signals collected by the telescope and travelling in the optical fiber assembly, the telescope comprising an optical concentrator having an inlet face and an outlet face with a surface area smaller than that of the inlet face, the telescope further comprising a gradient-index lens disposed with respect to the optical concentrator so that an inlet face of the gradient-index lens extends opposite the outlet face of the optical concentrator, the collecting end of the optical fiber assembly opening out opposite an outlet face of the gradient-index lens.

### Claim 2 (depends on 1)

The communication system according to claim 1, wherein the inlet face of the optical concentrator has a Fresnel surface.

### Claim 3 (depends on 2)

The communication system according to claim 2, wherein the Fresnel surface comprises a plurality of areas each having a surface defined by a Cartesian oval.

### Claim 4 (depends on 1)

The communication system according to claim 1, wherein the inlet face of the optical concentrator has a surface defined by a Cartesian oval.

### Claim 5 (depends on 1)

The communication system according to claim 1, wherein the optical concentrator is a compound elliptical concentrator.

### Claim 6 (depends on 1)

The communication system according to claim 1, wherein a lateral surface of the concentrator has one or more lateral facets of the prismatic type.

### Claim 7 (depends on 1)

The communication system according to claim 1, wherein the inlet face of the gradient-index lens is bonded to the outlet face of the optical concentrator.

### Claim 8 (depends on 1)

The communication system according to claim 1, comprising a visible light transmitter positioned at an illumination end of the optical fiber assembly, the visible light transmitter being arranged to generate visible light that propagates through the optical fiber assembly to open outwardly via the collecting end and the telescope.

### Claim 9 (depends on 1)

The communication system according to claim 1, comprising a modulated light signal transmitter positioned at a transmitting end of the optical fiber assembly, the modulated light signal transmitter being arranged to produce downlink modulated light signals which travel through the optical fiber assembly and are transmitted externally via the collecting end and the telescope.