Illumination device with light source emulation effect

Patent metadata

Field	Value
Publication number	US-11835219-B2
Application number	US-202217724838-A
Country	US
Kind code	B2
Filing date	Apr 20, 2022
Priority date	Apr 22, 2021
Publication date	Dec 5, 2023
Grant date	Dec 5, 2023

Abstract

An illumination device includes a plurality of light sources arranged in at least a first group of light sources having one or more light sources and a second group of light sources having one or more light sources and further includes one or more light collectors, each being arranged for collecting light from one or more light sources from the first group of light sources and for converting the collected light into one or more light beams. The first and second groups of light sources are each individually controllable. The first and second groups of light sources are both arranged for emitting light from a space on one side of the one or more light collectors. The illumination device is arranged so that light emitted from the second group of light sources through the one or more light collectors defines a pattern comprising one or more elongated elements.

First claim

What is claimed is:

1. An illumination device comprising:
a plurality of light sources arranged in at least:
i. one or more first light sources, and
ii. one or more second light sources comprising one or more light emitting strings, wherein the one or more first light sources and the one or more second light sources are each individually controllable; and

one or more light collectors, each being arranged for collecting light from a light source from the one or more first light sources and for converting the collected light into one or more light beams,

wherein:
the one or more first light sources and the one or more second light sources are both arranged for emitting light from a first side of the one or more light collectors,
the light emitting strings are visible through the one or more light collectors, and
the illumination device is arranged so that light emitted from the one or more second light sources through the one or more light collectors generates a pattern of one or more imageable or observable elongated elements outside the illumination device on a second side of the one or more light collectors, wherein the second side is opposite the first side of the one or more light collectors.

2. The illumination device of claim 1 , wherein the one or more light emitting strings comprise one or more light guides illuminated from one or more emitters within the one or more second light sources.

3. The illumination device of claim 1 , wherein the one or more light emitting strings are LED filament strings.

4. The illumination device of claim 1 , wherein:
the one or more first light sources comprise a plurality of first light sources;
the one or more second light sources comprise a plurality of second light sources; and
the one or more imageable or observable elongated elements are given by at least one of:
one or more coherent elongated elements, or
an arrangement of light sources within the plurality of second light sources, which arrangement forms a line,
wherein a center-to-center distance between neighboring light sources within the plurality of second light sources is less than half a minimum center-to-center distance between light sources within the plurality of first light sources.

5. The illumination device of claim 1 , wherein the illumination device is arranged so that each light source within the one or more first light sources is paired with a corresponding light collector of the one or more light collectors.

6. The illumination device of claim 1 , wherein the one or more light collectors are gathered in a lens assembly.

7. The illumination device of claim 1 , further comprising a backdrop arranged so that the one or more second light sources is placed between the one or more light collectors and the backdrop.

8. The illumination device of claim 7 , wherein the backdrop has variations in at least one of texture or optical properties.

9. The illumination device of claim 8 , wherein the backdrop is designed with circular V-grooves being concentrically arranged with respect to an optical axis of at least one light collector within the one or more light collectors.

10. The illumination device of claim 8 , wherein the illumination device further comprises one or more third light sources, the one or more third light sources being arranged for backlighting the backdrop.

11. The illumination device of claim 10 , wherein the backdrop is at least one of: (1) placed between the one or more third light sources and the one or more light collectors, or (2) is substantially translucent and diffuses the light.

12. The illumination device of claim 1 , wherein the illumination device is a moving head.

13. The illumination device of claim 1 , wherein the one or more light collectors comprise one or more lenses.

14. The illumination device of claim 1 , wherein the pattern comprising the one or more imageable or observable elongated elements is a line pattern.

15. A method for illumination using a lighting device comprising a plurality of light sources, the method comprising:
emitting light from at least one of one or more first light sources or one or more second light sources,
wherein:
the lighting device comprises:
the plurality of light sources arranged in at least:
i. the one or more first light sources, and
ii. the one or more second light sources comprising one or more light emitting strings, wherein the one or more first light sources and the one or more second light sources are each individually controllable; and

one or more light collectors, each being arranged for collecting light from a light source from the one or more first light sources and for converting the collected light into one or more light beams,

the one or more first light sources and the one or more second light sources are both arranged for emitting light from a first side of the one or more light collectors,
the light emitting strings are visible through the one or more light collectors, and
the lighting device is arranged so that light emitted from the one or more second light sources through the one or more light collectors generates a pattern of one or more imageable or observable elongated elements outside the lighting device on a second side of the one or more light collectors, wherein the second side is opposite the first side of the one or more light collectors.

16. The method of claim 15 , wherein the one or more light collectors comprise one or more lenses.

17. The method of claim 16 , wherein the pattern comprising the one or more imageable or observable elongated elements is a line pattern.

Assignees

• Harman Professional Denmark Aps

Inventors

• Rasmussen Niels Jørgen
• Hansen Claus Ellevang

Classifications

• F21Y2113/13

  comprising an assembly of point-like light sources · CPC title

• F21V5/007 Primary

  Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane (combination of two or more refractors F21V5/008) · CPC title

• F21S10/023

  by selectively switching fixed light sources · CPC title

• F21V5/04

  of lens shape · CPC title

• F21V11/08

  using diaphragms containing one or more apertures · CPC title