Device, system and method for illuminating a target area

Patent metadata

Field	Value
Publication number	US-2016334631-A1
Application number	US-201615153974-A
Country	US
Kind code	A1
Filing date	May 13, 2016
Priority date	May 15, 2015
Publication date	Nov 17, 2016
Grant date	—

Abstract

An an illumination device ( 6 ) comprising a light source ( 8 ) producing a first cone of light ( 10 ) and a deflection unit ( 12 ) for the beam-shaping conversion of the first cone of light ( 10 ) into a second cone of light ( 14 a,b ) and to emit the latter towards the target area ( 4 a,b ), the deflection unit ( 12 ) can be varied in order to vary the form (Fa,b) and/or the intensity distribution (Ia,b) in the second cone of light.
An illumination system ( 2 ) contains the illumination device ( 6 ) and the target area ( 4 a,b ).
The illumination device ( 6 ) or the illumination system ( 2 ) is used to illuminate a surface of an interior of a vehicle as target area ( 4 a,b ).

First claim

What is claimed is:

1 . An illumination device for illuminating a target area with a light source which is designed in operation to emit a first cone of light towards a deflection unit, the deflection unit being designed to convert the first cone of light in a beam-shaping manner into a second cone of light and to emit the second cone of light towards the target area,
wherein the deflection unit is designed to be variable to the effect that the form of the second cone of light and/or the intensity distribution (Ia,b) in the second cone of light is variable with respect to a cross section (Qa,b) of the second cone of light, wherein the deflection unit is designed to be variable in such a way that, for a given target area, it is possible to achieve at least one form (Fa,b) according to which the target area can just be floodlit completely, and it is possible to achieve at least one intensity distribution (Ia,b) according to which the target area can be floodlit by the second cone of light with a homogenous brightness distribution in one or two dimensions (x,y), and wherein the deflection unit is designed to be variable in such a way that, for each of at least two different given target areas, it is possible to achieve respectively at least one form (Fa,b) according to which the respective target area can just be floodlit completely, and it is possible to achieve at least one intensity distribution (Ia,b) according to which the respective target area can be floodlit by the second cone of light with a homogenous brightness distribution in one or two dimensions (x,y).

2 . The illumination device according to claim 1 ,
wherein the deflection unit is a reflection unit reflecting the first cone of light in a beam-shaping manner.

3 . The illumination device according to claim 2 ,
wherein the deflection unit contains a reflection area which reflects the first cone of light in a beam-shaping manner and which is designed to be variable with regard to its reflection behaviour, in particular variable in form.

4 . The illumination device according to claim 1 ,
wherein the deflection unit contains at least two deflection elements, wherein each of the deflection elements is designed to deflect a true part of the first cone of light.

5 . The illumination device according to claim 4 ,
wherein at least one of the deflection elements, is designed to be movable with respect to the first cone of light ( 10 ) and/or to one another.

6 . The illumination device according to claim 4 ,
wherein all of the deflection elements are designed to be movable with respect to the first cone of light and/or to one another.

7 . The illumination device according to claim 4 ,
wherein at least one of the deflection elements, is designed to be intrinsically immovable.

8 . The illumination device according to claim 4 ,
wherein all of the deflection elements are designed to be intrinsically immovable.

9 . The illumination device according to claim 1 ,
wherein the light source is a point light source.

10 . The illumination device according to claim 9 ,
wherein said point light source is an individual LED or an LED arrangement.

11 . An illumination system comprising an illumination device according to claim 1 ,
wherein the illumination system contains the target area to be illuminated.

12 . The illumination system according to claim 8 ,
wherein the target area is a surface to be illuminated of an interior.

13 . The illumination system according to claim 12 ,
wherein said interior is of a cabin of a vehicle.

14 . The illumination system according to claim 13 ,
wherein said vehicle is an aircraft.

15 . A method for illuminating a target area, in which a light source in operation emits a first cone of light towards a deflection unit, the deflection unit converting the first cone of light in a beam-shaping manner into a second cone of light and emitting the second cone of light towards the target area,
wherein the deflection unit is varied to the effect that the form (Fa,b) of the second cone of light and/or the intensity distribution (Ia,b) in the second cone of light is varied with respect to a cross section (Qa,b) of the second cone of light.

16 . The method according to claim 15 ,
wherein a desired brightness distribution on the target area to be illuminated is predefined, and, the deflection unit is optionally varied in such a way that that intensity distribution (Ia,b) in the second cone of light according to which the target area is illuminated with the desired brightness distribution is achieved.

17 . A method for illuminating a target area comprising illuminating a surface of said target area with the illumination device according to claim 1 .

18 . A method for illuminating a target area comprising illuminating a surface of said target area found in the illumination system according to claim 11 .

Assignees

• Diehl Aerospace Gmbh

Inventors

• Schmid Frank
• Hammel Andreas
• Guenther Jan
• Renz Marc
• Schevardo Dirk-Achim

Classifications

• G02B19/0014

  at least one surface having optical power · CPC title

• G02B19/0028

  refractive and reflective surfaces, e.g. non-imaging catadioptric systems · CPC title

• G02B19/0061

  the light source comprising a LED · CPC title

• B64D11/00 Primary

  Passenger or crew accommodation; Flight-deck installations not otherwise provided for · CPC title

• B60Q3/43

  General lighting · CPC title