Illumination device with light source emulation effect

Patent metadata

Field	Value
Publication number	US-2022341565-A1
Application number	US-202217724838-A
Country	US
Kind code	A1
Filing date	Apr 20, 2022
Priority date	Apr 22, 2021
Publication date	Oct 27, 2022
Grant date	—

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. a first group of light sources, wherein the first group of light sources comprises one or more light sources, and
ii. a second group of light sources, wherein the second group of light sources comprises one or more light sources, wherein the first group of light sources and the second group of light sources are each individually controllable; and
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;
wherein:
the first group of light sources and the second group of light sources are both arranged for emitting light from a space on a first side of the one or more light collectors; and
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 being at least one of imageable or observable from a position outside the illumination device on a second side of the one or more light collectors with respect to the first side of the one or more light collectors.

2 . The illumination device of claim 1 , wherein the second group of light sources comprises:
one or more light emitting strings visible through the one or more light collectors.

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

4 . The illumination device of claim 3 , wherein the light emitting strings are LED filament strings.

5 . The illumination device of claim 1 , wherein the illumination device is arranged so that the light which defines the pattern is emitted from the second group of light sources through the one or more light collectors through which light from the first group of light sources is also emitted.

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

7 . The illumination device of claim 1 , wherein the illumination device is arranged so that each light source within the first group of light sources is in a pair with a light collector.

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

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

10 . The illumination device of claim 1 , wherein the backdrop has variations in at least one of texture or optical properties.

11 . The illumination device of claim 10 , 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.

12 . The illumination device of claim 10 , wherein the illumination device further comprises a third group of light sources, the third group of light sources being arranged for backlighting the backdrop.

13 . The illumination device of claim 12 , wherein the backdrop is at least one of placed between the third group of light sources and the one or more light collectors is substantially translucent and diffuses the light.

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

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

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

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

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 group of light sources and the second group of light sources are both arranged for emitting light from a space on a first side of the one or more light collectors; and
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, the pattern at least one of imageable or observable from a position outside the illumination device a second side of the one or more light collectors with respect to the first side of the one or more light collectors.

18 . The method of claim 17 , wherein the one more light collectors comprise one or more lenses.

19 . The method of claim 18 , wherein the pattern comprising the one or more elongated elements is a line pattern.

Assignees

• Harman Professional Denmark Aps

Inventors

• Rasmussen Niels Jørgen
• Hansen Claus Ellevang

Classifications

• F21V9/00

  Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters (coloured shades F21V1/00; elements characterised by cooling arrangements F21V29/502) · CPC title

• F21Y2103/00

  Elongate light sources, e.g. fluorescent tubes · CPC title

• H05B47/155

  Coordinated control of two or more light sources · CPC title

• F21W2131/107

  of the exterior of buildings · CPC title

• F21W2131/406

  for theatres, stages or film studios · CPC title