Light modifier having complex lenses for LED luminaires

Patent metadata

Field	Value
Publication number	US-9562665-B2
Application number	US-201214131630-A
Country	US
Kind code	B2
Filing date	Jul 5, 2012
Priority date	Jul 8, 2011
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

Lens having a cavity defining a light entrance section of the lens, and a light exit surface opposite the light entrance section, and a beam splitting element formed on the light entrance section of the lens.

First claim

The invention claimed is:

1. A light modifier comprising:
at least one lens, each lens having a light-incident portion including a cavity, a light-exit face lying opposite to the light-incident portion, and a beam splitting element formed in the light-incident portion,
wherein the light-exit face of the lens is rectangular and the beam splitting element is configured to project an asymmetric light emission.

2. The light modifier as claimed in claim 1 , wherein the beam splitting element is formed by one or more notches on a surface of the cavity.

3. A luminaire comprising a plurality of substantially punctiform light sources arranged next to one another, and a light modifier as claimed in claim 1 coupled to the light sources.

4. The luminaire as claimed in claim 3 , wherein the substantially punctiform light sources are LEDs.

5. The light modifier as claimed in claim 1 , wherein the at least one lens is a plurality of lenses arranged next to one another and integrally connected.

6. The light modifier as claimed in claim 5 , wherein all lenses have a rectangular shape, and the light-exit faces having the same shape.

7. The light modifier as claimed in claim 5 , wherein the lenses have a substantially frustum shape, and lateral faces of the lenses have the same shape.

8. The light modifier as claimed in claim 5 , wherein the cavities of at least two of the lenses have different shapes.

9. A light modifier comprising:
at least one lens, each lens having a light-incident portion including a cavity, a light-exit face lying opposite to the light-incident portion, and a beam splitting element formed in the light-incident portion;
wherein,
the light-exit face of the lens is rectangular and the beam splitting means are configured to project an asymmetric light emission;
the at least one lens is a plurality of lenses arranged next to one another and integrally connected;
the cavities of at least two of the lenses have different shapes; and
each beam splitting element is formed by a notch, wherein the notches of different lenses are oriented differently with respect to one another.

10. A luminaire comprising a plurality of substantially punctiform light sources arranged next to one another, and a light modifier as claimed in claim 9 coupled to the light sources.

11. The luminaire as claimed in claim 10 , wherein the substantially punctiform light sources are LED's.

Assignees

• Ebner Stephan
• Zumtobel Lighting Gmbh

Inventors

• Ebner Stephan

Classifications

• F21V5/048 Primary

  the lens being a simple lens adapted to cooperate with a point-like source for emitting mainly in one direction and having an axis coincident with the main light transmission direction, e.g. convergent or divergent lenses, plano-concave or plano-convex lenses · CPC title

• B29D11/0048

  Moulds for lenses (moulds for plastic articles in general B29C33/00) · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• G02B19/0066

  in the form of an LED array · CPC title

• F21Y2103/10

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