Wash light luminaire with special effects capabilities

Patent metadata

Field	Value
Publication number	US-10162105-B2
Application number	US-201615075191-A
Country	US
Kind code	B2
Filing date	Mar 20, 2016
Priority date	Mar 20, 2016
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

An automated luminaire includes a light engine having a multi-color LED array light source, a light guide which incompletely homogenizes such that colored light beams visibly retain separation and individual color, and a zoom lens system that projects the incompletely homogenized light beams in a spreading pattern that opens and closes as lenses are moved toward and away from the light guide.

First claim

What is claimed is:

1. An automated luminaire, comprising:
a light engine with a central light beam axis and with an LED array light source generating a plurality of colored light beams;
a light guide which incompletely homogenizes such that the colored light beams visibly retain separation and individual color;
a zoom lens system configured to receive light beams from the light guide and project the received light beams in a spreading pattern of beams that respectively opens and closes as lenses of the zoom lens system are moved toward and away from the light guide.

2. The automated luminaire of claim 1 where the light guide is articulated to rotate about the central light beam axis.

3. The automated luminaire of claim 1 where the zoom lens system is articulated to move along the central light beam axis, expanding and contracting the light beams as the zoom lens system is articulated.

4. The automated luminaire of claim 3 which further comprises an image multiplying optical modulator.

5. The automated luminaire of claim 4 wherein the image multiplying optical modulator is a multifaceted prism.

6. The automated luminaire of claim 4 where the image multiplying optical modulator is articulated to engage or disengage the light beams.

7. The automated luminaire of claim 4 where the image multiplying optical modulator is articulated to rotate about the central axis of the light beams.

8. The automated luminaire of claim 1 where the light guide has a cross sectional shape with an even number of opposing sides.

9. The automated luminaire of claim 8 where the light guide has a four-sided cross sectional shape.

10. The automated luminaire of claim 7 where the light guide has an entry port with a smaller area than an exit port.

11. The automated luminaire of claim 10 where the light guide exit port is polished.

12. The automated luminaire of claim 3 further comprising an articulated diffuser which can be articulated to engage or disengage the light beams.

13. The automated luminaire of claim 10 where the diffuser comprises a plurality of diffusers to select to change the level of diffusion.

14. The automated luminaire of claim 12 where the diffuser includes a masking pattern configured to change a cross-sectional profile of the light beams.

15. The automated luminaire of claim 14 where the masking pattern results in a light beam with a rounder cross-section.

16. An automated luminaire, comprising:
a light engine with a central light beam axis and with an LED array light source generating a plurality of colored light beams;
a light guide which
incompletely homogenizes such that the colored light beams visibly retain separation and individual color,
is articulated to rotate about the light beam axis,
has a four-sided cross sectional shape,
has an entry port with a smaller area than an exit port, and
the exit port has a polished surface;

a zoom lens system which
receives light from the light guide and projects it, and
is articulated to move along the light beam axis, expanding and contracting a pattern of light beams as lenses of the zoom lens system are moved relative to the light guide;

a multi-faceted prism image multiplying optical modulator which is
articulated to engage or disengage the light beams, and
articulated to rotate about the central light beam axis; and

an articulated diffuser which is articulated to engage or disengage the light beams, where the diffuser includes a masking pattern configured to change the cross sectional profile of the light beam to be rounder.

Assignees

• Robe Lighting Sro

Inventors

• Jurik Pavel
• Valchar Josef

Classifications

• F21V5/02

  of prismatic shape (F21V5/04 takes precedence) · CPC title

• F21V21/28

  adjustable in more than one plane · CPC title

• F21W2131/406

  for theatres, stages or film studios · CPC title

• G02B6/0008

  the light being emitted at the end of the fibre · CPC title

• F21V14/04

  by movement of reflectors {(in vehicle head lamps F21S41/675)} · CPC title