WO2007128311A1

WO2007128311A1 - Light system containing at least one light source

Info

Publication number: WO2007128311A1
Application number: PCT/DK2007/000214
Authority: WO
Inventors: Peter Langkilde
Original assignee: Peter Langkilde
Priority date: 2006-05-04
Filing date: 2007-05-03
Publication date: 2007-11-15
Also published as: CN101438095A; EP2021685A1

Abstract

The present invention concerns a light system that may be used in connection with most of the known suspended lamps. The light system includes at least one light source (2) surrounded by a first reflector (4) which may be disposed in a ceiling. The light system furthermore includes a second reflector (6) which receives and reflects concentrated light (9) from the first reflector (4). This second reflector (6), which may be designed as a parabolic reflector, may be placed in a position adjustable way in an arbitrary suspended lamp. Since the light source (2) is separate from the second reflec¬ tor (6) distributing the light (8), it is possible to suspend this second reflector (6) in connection with a suspended lamp which is not connected with any live wire. The sus¬ pended lamp may be suspended in such thin wires (12) that these wires only become visible within distances less than about 40 cm. The suspended lamp thus appears freely floating. Besides, the lighting may be adjusted to a greater degree than is the case with known light bulbs. This will means greater freedom to the development of lamps.

Description

Light system containing at least one light source

Field of the Invention

The present invention concerns a light system containing at least one light source, where the light source is surrounded by a first reflector, where the light of the light source is distributed by at least one other reflector, that the first reflector of the light source produces a first light beam directed against the second reflector, where the light is transmitted in the form of a light beam from the first to the second reflector.

Object of the Invention

It is the object of the invention to create a suspended lamp with a mainly invisible suspension, where the light source is not located in connection with the suspended lamp. An alternative object is to provide a light system where a light source is provided with spacing (at least about 45 cm) to reflection means distributing the light. A second pur- pose is to provide an arbitrary lamp without any light source where the light is transmitted from a light source to the lamp.

Description of the Invention

This may be achieved by a light system as specified in the preamble of the main claim, which is modified in that the first reflector is disposed above the second reflector, where the first reflector interacts with at least one thread or wire carrying at least the second reflector (6) and/or an arbitrary lamp or pendant.

By an advantageous embodiment of the invention, the second reflector is suspended in relation to the first reflector by means of one or more wires. Thereby it becomes possible to provide the uppermost reflector relatively highly in a room, possibly mounted in connection with a ceiling, while the second reflector can be provided substantially lower and provide for a proper light distribution in the room.

Hereby may be achieved that the light source is disposed at one location, while the other reflector is provided at another location. Thereby is becomes possible to provide a lamp which operates without the lamp having electric connection in the form of a cable, as the light source may be disposed at another location, and the light may be transmitted in a narrow but strong light beam from the first reflector to the second reflector. Thereby is produced freedom of design for designing existing and new lamps in a new way, as one is no longer limited to providing an electric cable with socket and light bulb for the source of light. The light source may e.g. be provided in a ceiling, while the reflector is provided in or under the ceiling, where the reflector then may spread the light in the room so that a chosen light distribution appears in a room, where the design of the reflector may advantageously be adapted to the actual use of the lamp.

The light source and the first reflector may be disposed in a housing, where the housing may contain at least two wire coils, where the coils contain wire carrying the second reflector and/or an arbitrary lamp or pendant, and where the wire length is adjusted by rotating the wire coils. Rolling-up mechanisms in the form of coils may be used with advantage to shorten the wires to the desired length. Hereby may be provided a light system with great flexibility, as the second reflector can be elevated and lowered in relation to the first reflector and the light source. The wire coils may advantageously be provided with friction locks, so that the wires are always held in the desired position, until the lower reflector is acted on in upwards or downwards direction.

A first minimum distance is defined between the first and the second reflectors, where the light beam has an extension perpendicular to the average direction of propagation of the light beam which is substantially less than the first minimum distance. The light beam itself may be produced by means of parabolic reflector surrounding the light source so that the diameter of the light beam is in the magnitude about 3-10 cm. It will also be possible to produce a suitable light beam by means of light diodes or laser technology. Thereby it will be possible to transmit light by means of the light beam over distances that may be up to 5 metres. If the light is to be transmitted over greater distances, this will be possible by a special embodiment of the second reflector which subsequently is to distribute the light.

Advantageously, the light beam may have an extension perpendicular to the direction of propagation of the light beam which is less than 10% of the first minimum distance. Hereby may be achieved that the light beam has limited extension, and in most cases the light beam will be substantially less than the 10% of the first distance.

The first reflector may interact with a mechanical connection with the second reflec- tor, where the connection does not conduct electric current. Hereby may be achieved the provision of a mechanical securing of the mutual disposition of the two reflectors. On the basis that the light system operates with a narrow light beam, it is optimal if the two reflectors are directed towards each other all the time. A mechanical stabilisation would thus be advantageous.

Besides, the second reflector will be designed with optical properties to reflect and spread the narrow light beam. Hereby may be achieved a desired distribution of light which the light beam has contained.

The second reflector may interact with at least one lampshade and/or an arbitrary lamp or pendant, where the lampshade and or an arbitrary lamp or pendant partly surrounds the second reflector. Hereby it becomes possible to enlighten a lampshade and/or an arbitrary lamp or pendant very efficiently by means of the other reflector. The second reflector may in principle be disposed about the same place where normally the bulb in a normal lamp would be placed. Thus one or more lampshades will be lit up exactly as with an incandescent bulb, the only difference being that there is no need for socket and light bulb because the light source is provided at some distance away.

The first reflector may interact with at least one convex lens for focusing the light beam. Advantageously, there maybe used a convex lens for concentrating the light beam if the light beam is to go across a long distance.

The second reflector may interact with at least one lens, where the lens concentrates the light beam before the light beam is reflected on the second reflector. Also, the sec- ond reflector will interact with a lens so that the incoming light from the light beam is concentrated on a reflector having limited extension. The lenses mentioned earlier may e.g. be designed as Fresnel lenses. Description of the Drawing

Fig. 1 shows a possible embodiment of light system with light source according to the invention. On the Figure appears a light source 2 which interacts with a first reflector 4 transmitting a light beam 8 against a second reflector 6. The light beam 2 and the first reflector 4 are provided in a housing 10, where the housing 10 is designed with wires 12 for suspending the second reflector 6 and a shade 16. Where the wire 12 is rolled up on coils 14 so that a lampshade 16 together with the second reflector 6 are displaceable in height in relation to the housing 10. A first distance 20 is shown between housing 10 and shade 16. The light beam 8 has an extension 22 in a direction perpendicular to the direction of propagation of the light 24.

As it appears from the Figure, the lampshade 16 will be lit up without any light source in the proximity of the lampshade 16 itself. Light is transmitted through a relatively narrow light beam 8, whereby it becomes possible to have a lamp, e.g. suspended un- der a ceiling, hanging in very narrow and very thin wires 12, so that the suspension becomes almost invisible, while from the second reflector 6, a lighting occurs internally of the lampshade 16, so that a desired light distribution appears on an area below the lampshade 16. Of course, it is implied that a lampshade as shown on the figure with the number 16 does not need to be the actual embodiment, as it may be envisaged with a large number of pendants, each interacting with the second reflector 6 for further transmission of the light, so that the propagation of the light will be as desired. It appears from Fig. 1 that the first distance 20 is much greater than the extension of the light beam 22.

Fig. 2 shows an alternative embodiment, which in principle only differs from Fig. 1 in that there is a lens 18 which is disposed in connection with the first reflector 4.

Hereby may be attained that the light beam 8 is concentrated so that the area impinging on the second reflector 6 is reduced, so that there may be utilised a relatively small second reflector, after which there may be provided a more compact lampshade around the reflector 6. The application of lens 18 is advantageous at the same time, if one desires to increase the distance between the first and the second reflectors. By using a lens 18, or possibly a further lens provided in connection with the second reflector, it will be possible to increase the distance between light source and the second reflector up to at least 4 metres, and conditioned on the possible use of the lens both at the top and at the bottom, it may be envisaged that this distance can be considerably increased.

Claims

1. A light system containing at least one light source (2), where the light source (2) is surrounded by a first reflector (4), where the light of the light source (2) is distributed by at least one other reflector (6), that the first reflector (4) of the light source (2) pro- duces a first light beam (8) directed against the second reflector (6), where the light is transmitted in the form of a light beam (8) from the first (4) to the second reflector (6), characterised in that the first reflector (4) is disposed above the second reflector (6), where the first reflector (4) interacts with at least one thread or wire (12) carrying at least the second reflector (6) and/or an arbitrary lamp or pendant.

2. Light system according to claim 1, characterised in that the light source (2) and the first reflector (4) are disposed in a housing (10), where the housing (10) contains at least two thread or wire coils (14), where the coils (14) contain wire (12) carrying the second reflector (6) and/or an arbitrary lamp or pendant, and where the wire length is adjusted by rotating the wire coils (14).

3. Light system according to claim 1 or 2, characterised in that a first minimum distance (20) is defined between the first (4) and the second reflector (6), where the light beam has an extension (22) perpendicularly to the average direction of propagation (24) of the light beam which is substantially less than the first minimum distance (20).

4. Light system according to claim 3, characterised in that the light beam (8) has an extension (22) perpendicularly to the direction of propagation (24) of the light beam which is less than 10% of the first minimum distance (20).

5. Light system according to one of claims 1 -5, characterised in that the first reflector (4) interacts with a mechanical connection with the second reflector (6), where the connection does not conduct electric current,.

6. Light system according to claim 5, characterised in that the second reflector (6) interacts with at least one lampshade (16) and/or an arbitrary lamp or pendant, where the lampshade (16) partly surrounds the second reflector.

7. Light system according to one of claims 1 -6, characterised in that the first reflector (4) interacts with at least one lens (18) for focusing the light beam (8).

8. Light system according to one of claims 1 -7, characterised in that the second reflector (6) interacts with at least one lens, where the lens concentrates the light beam before the light beam is reflected on the second reflector (6).

9. Light system according to one of claims 1 -8, characterised in that the first dis- tance (20) is greater than 0.5 m.