LED strobe light with visual effects

Patent metadata

Field	Value
Publication number	US-9995456-B2
Application number	US-201615092526-A
Country	US
Kind code	B2
Filing date	Apr 6, 2016
Priority date	Apr 14, 2015
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

The various embodiments relate to a LED strobe lighting fixture comprising a plurality of LEDs arranged in a linear array and which is configured to generate a strobe light effect. The light fixture comprises a central illumination LED array arranged between a first optical reflector and a second optical reflector. At a least one LED pixel array is configured to illuminate at least one of said first optical reflector and said second optical reflector. In one embodiment the LED pixels are configured to illuminate different parts of said first optical reflector or of said second optical reflector.

First claim

We claim:

1. A light fixture, comprising:
a central illumination light emitting diode (LED) array;
at least one LED pixel array; and
a first optical reflector and a second optical reflector arranged in a housing, wherein said central illumination LED array comprises a plurality of LEDs and is arranged such that light generated by said central illumination LED array is projected in a forward direction in relation to said light fixture,
wherein said central illumination LED array is arranged between said first optical reflector and said second optical reflector,
wherein said least one LED pixel array comprises a plurality of individual controllable LED pixels, each of said LED pixels comprising a plurality of light emitters emitting light of different colors, and said LED pixels are configured to illuminate different parts of said first optical reflector or of said second optical reflector, and
wherein the first optical reflector and the second optical reflector are visible from outside a front side of the light fixture in the forward direction.

2. The light fixture according to claim 1 , wherein said first optical reflector or said second optical reflector comprises a plurality of individual specular reflectors.

3. The light fixture according to claim 2 , wherein said plurality of individual specular reflectors are formed as a plurality of faceted specular surfaces.

4. The light fixture according to claim 2 wherein said plurality of individual specular reflectors are formed as a plurality of specular ripples.

5. The light fixture according to claim 4 , wherein one or more of said specular ripples are formed as specular dimples.

6. The light fixture according to claim 4 , wherein one or more of said specular ripples are formed specular humps.

7. The light fixture according to claim 2 , wherein said plurality of individual specular reflectors are arranged in a regular pattern.

8. The light fixture according to claim 1 , further comprising a central light collector configured to collect light from said central illumination LED array and configured to convert the collected light into a light beam and redirect said light beam in a direction away from said first and said second optical reflector.

9. The light fixture according to claim 1 , wherein said first optical reflector and said second optical reflector are arranged such that substantially no light from said central illumination LED array illuminates said first optical reflector or said second optical reflector.

10. The light fixture according to claim 1 , wherein said LEDs of said central illumination LED array are arranged in a linear array, the length of said linear array is at least twice the width of said linear array, and said first optical reflector and said second optical reflector are arranged at opposite sides along the longitudinal direction of said linear array.

11. The light fixture according to claim 1 , wherein at least one end reflection surface is arranged adjacent to at least one of said first optical reflector and said second optical reflector, and said end reflection surface is configured to receive at least a portion of light illuminating at least one of said first optical reflector and said second optical reflector and is arranged at a position visible from a front side of said light fixture.

12. The light fixture according to claim 11 , wherein two end reflection surfaces are arranged at opposite sides of at least one of said first optical reflector and said second optical reflector, and said two end reflector surfaces are configured to face each other.

13. The light fixture according to claim 11 , wherein said end reflection surface comprises a plane reflection surface.

14. A method of generating light effects, comprising:
generating a light beam using a linear illumination light emitting diode (LED) array that comprises a plurality of LEDs arranged in a linear array, wherein the light beam is projected in a forward direction in relation to a light fixture that includes the linear illumination LED array; and
illuminating an optical reflector arranged along said linear illumination LED array using a linear pixel array that comprises a plurality of individual controllable LED pixels, wherein each of said LED pixels comprises a plurality of light emitters that emit light of different colors,
wherein illuminating said optical reflector comprises illuminating different parts of said optical reflector with different colored light using different LED pixels, and
wherein the optical reflector is visible from outside a front side of the light fixture in the forward direction.

15. The method according to claim 14 , further comprising generating light effects by dynamically controlling said LED pixels.

Assignees

• Martin Professional Aps

Inventors

• Hansen Claus Ellevang
• Jensen Frank Kjaer

Classifications

• F21W2131/406

  for theatres, stages or film studios · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21Y2103/10

  comprising a linear array of point-like light-generating elements · CPC title

• F21W2121/00

  Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00 · CPC title

• F21V7/048

  with facets structure · CPC title