# US 2010/0166365 A1 · Apparatus for collection and trasmission of light

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- Number: US 2010/0166365 A1
- Document ID: US20100166365A1
- Status: Published application
- Kind: A1
- Application number: 12/451,591
- Filed: 2008-05-22
- Published: 2010-07-01
- Earliest claimed: 2007-06-22
- Inventors: Bengt Steneby
- Web page: https://patentgrep.com/patent/US20100166365A1

## CPC

- F21S 11/00: Non-electric lighting devices or systems using daylight {(hybrid lighting devices combining artificial and natural light F21S19/00; roofs with sky-light opening E04D13/03; sun blinds for windows with means for redirecting light onto ceiling of a room E06B9/00; solar heat collectors F24S)}
- G02B 6/0006: {Coupling light into the fibre (in general G02B6/4298)}
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

An apparatus is presented for capture and transfer of sunlight. The apparatus comprises a light capturing section, an optical fibre which comprises a first end, a second end and a light transferring section arranged between the ends, which light transferring section along its entire length has an essentially constant crosssectional area and which first end is connected to the light capturing section, and a body with essentially the same refractive index as the light transferring section. The second end of the optical fibre is connected to a first end of the body, the second end of the body, which is opposite the first end of the body, has a larger crosssectional area than the light transferring section and first and second ends of the body are essentially plane parallel.

## Claims

### Claim 1

An apparatus for capture and transfer of sunlight comprising:
a light capturing section,
an optical fiber which comprises a first end, a second end and a light transferring section arranged between the ends, which light transferring section along its entire length has an essentially constant cross-sectional area and which first end is connected to the light capturing section, and
a body with essentially the same refractive index as the light transferring section
characterised by
the second end of the optical fiber being connected to a first end of the body,
the second end of the body, which is opposite the first end of the body, has a larger cross-sectional area than the light transferring section and the first and second ends of the body are essentially plane parallel.

### Claim 2 (depends on 1)

The apparatus according to claim 1, wherein the body is cone shaped.

### Claim 3 (depends on 1)

The apparatus according to claim 1, wherein a side surface of the body is provided with an internally reflecting material.

### Claim 4 (depends on 1)

The apparatus according to claim 1, wherein the body is colored.

### Claim 5 (depends on 1)

The apparatus according to claim 1, wherein the body is a glass body.

### Claim 6 (depends on 1)

The apparatus according to claim 1, wherein the second end has a free anti-reflection treated surface.

### Claim 7 (depends on 1)

The apparatus according to claim 1, wherein the body is attached to the light transferring section by an attachment consisting of: a glue or a gel.

### Claim 8 (depends on 1)

The apparatus according to claim 1, comprising an inner socket which cohesively covers a part of the light transferring section.

### Claim 9 (depends on 8)

The apparatus according to claim 8, wherein the inner socket comprises material which is more heat conductive than the optical fiber.

### Claim 10 (depends on 1)

The apparatus according to claim 1, comprising an outer socket which cohesively covers a part of the light transferring section and at least a part of the body.

### Claim 11 (depends on 7)

The apparatus according to claim 7, comprising an outer socket which cohesively covers a part of the light transferring section and at least a part of the body wherein an inner socket is completely encased by the outer socket.

### Claim 12 (depends on 10)

The apparatus according to claim 10, wherein the outer socket comprises material which is more heat conductive than the optical fiber.

### Claim 13 (depends on 12)

The apparatus according to claim 12, wherein the outer socket has an area increasing outer surface.

### Claim 14 (depends on 13)

The apparatus according to claim 13, wherein the outer area increasing surface is at least partly in a form of threads.

### Claim 15 (depends on 8)

The apparatus according to claim 8, comprising an outer socket which cohesively covers a part of the light transferring section and at least a part of the body wherein the inner socket is completely encased by the outer socket.