Lighting systems and devices with central silicone module

Patent metadata

Field	Value
Publication number	US-11041609-B2
Application number	US-201916400854-A
Country	US
Kind code	B2
Filing date	May 1, 2019
Priority date	May 1, 2018
Publication date	Jun 22, 2021
Grant date	Jun 22, 2021

Abstract

Lighting systems that include an LED and a silicone module designed to contain a lens are described herein.

First claim

What is claimed is:

1. A lighting system comprising:
a circuit board;
a light emitting diode (LED) mounted on a side of the circuit board and configured to emit light;
a lens being located in a position over the LED, the lens having a bottom surface facing the side of the circuit board, and having a top surface opposite the bottom surface, and having a lateral surface spanning a distance between the top and bottom surfaces; and
a central silicone module including silicone and being disposed on the side of the circuit board and being configured for holding the lens in the position over the LED, the central silicone module having a module surface facing toward the lateral surface of the lens, a first portion of the module surface spanning a first portion of the distance and being spaced apart away from the lateral surface for the first portion of the distance to form a gap, and a second portion of the module surface spanning a second portion of the distance and being received into contact with the lateral surface for the second portion of the distance, the second portion of the module surface being located between the side of the circuit board and the first portion of the module surface.

2. The lighting system of claim 1 , wherein the central silicone module includes a cup forming the module surface, and wherein the second portion of the module surface of the cup is shaped for receiving into contact, and for holding in the position over the LED, the lateral surface of the lens for the second portion of the distance.

3. The lighting system of claim 2 , wherein the first portion of the module surface of the cup is shaped for receiving and forming the gap together with the lateral surface of the lens for the first portion of the distance.

4. The lighting system of claim 1 , wherein the gap is an air gap.

5. The lighting system of claim 1 , wherein the gap is at least partially filled with a visible-light—transmissive material.

6. The lighting system of claim 5 , wherein the visible-light—transmissive material has a lower refractive index than another refractive index of the lens.

7. The lighting system of claim 1 , further including a reflector located in the gap, the reflector having a reflective surface facing toward the lateral surface of the lens.

8. The lighting system of claim 7 , wherein the reflective surface is configured to reflect at least some light toward the lateral surface of the lens and back into the lens.

9. The lighting system of claim 1 , further including a potting material, wherein the central silicone module is located between the potting material and the lateral surface of the lens.

10. The lighting system of claim 9 , wherein the potting material includes an elastomer.

11. The lighting system of claim 1 , wherein the LED is a phosphor converted LED that emits light with an angular correlated color temperature (CCT) deviation.

12. The lighting system of claim 11 , wherein the lens is configured to receive the light emitted from the phosphor converted LED and to reduce the angular CCT deviation of the light received from the phosphor converted LED.

13. A lighting system, comprising:
a circuit board;
a lens assembly including a lens having a light output surface being spaced apart along a central axis from a light input surface, the lens further having a lateral surface being spaced apart around the central axis and having a frusto-conical shape spanning a distance between the light input and output surfaces of the lens, the lens being configured for causing some light passing into the lens through the light input surface to be diverted toward the lateral surface;
a light source being located on a side of the circuit board, the lens being located with the light input surface as being located in a position over the light source, the light source including a light emitting diode (LED) and being configured for generating light being directed through the light input surface into the lens;
a central silicone module including silicone and being disposed on the side of the circuit board and being configured for holding the lens with the light input surface as being in the position over the light source, the central silicone module having a module surface facing toward the lateral surface of the lens, a first portion of the module surface spanning a first portion of the distance and being spaced apart away from the lateral surface for the first portion of the distance to form a gap, and a second portion of the module surface spanning a second portion of the distance and being received into contact with the lateral surface for the second portion of the distance, the second portion of the module surface being located between the side of the circuit board and the first portion of the module surface.

14. The lighting system of claim 13 , wherein the central silicone module includes a cup forming the module surface, and wherein the second portion of the module surface of the cup is shaped for receiving into contact, and for holding in the position over the LED, the lateral surface of the lens for the second portion of the distance.

15. The lighting system of claim 14 , wherein the first portion of the module surface of the cup is shaped for receiving and forming the gap together with the lateral surface of the lens for the first portion of the distance.

16. The lighting system of claim 13 , further including a reflector located in the gap, the reflector having another frusto-conical shape, the reflector being spaced apart around the central axis and spanning a portion of the distance between the light input and output surfaces of the lens, the reflector having a reflective surface facing toward the lateral surface of the lens.

17. A lighting process, comprising:
providing a lighting system that includes a circuit board, a lens assembly, a light source, and a central silicone module, the lens assembly including a lens having a light output surface being spaced apart along a central axis from a light input surface, the lens further having a lateral surface being spaced apart around the central axis and having a frusto-conical shape spanning a distance between the light input and output surfaces of the lens, the light source being located on a side of the circuit board, the lens being located with the light input surface as being in a position over the light source, the light source including a light emitting diode (LED), the central silicone module including silicone and being disposed on the side of the circuit board and being configured for holding the lens with the light input surface as being in the position over the light source, the central silicone module having a module surface facing toward the lateral surface of the lens, a first portion of the module surface spanning a first portion of the distance and being spaced apart away from the lateral surface for the first portion of the distance to form a gap, and a second portion of the module surface spanning a second portion of the distance and being received into contact with the lateral surface for the second portion of the distance, the second portion of the module surface being located between the side of the circuit board and the first portion of the module surface;
causing the light source to generate light being directed through the light input surface into the lens;
causing the lens to divert, to the lateral surface, some light after passing into the lens through the light input surface; and
causing some light after being diverted to the lateral surface to then be further diverted into the lens thereby reducing an an

Assignees

• Ecosense Lighting Inc

Inventors

• Aviram Itzik
• Meir Ariel
• Meir Noam

Classifications

• H10H20/855

  Optical field-shaping means, e.g. lenses · CPC title

• F21V5/04

  of lens shape · CPC title

• H05K2201/10106

  Light emitting diode [LED] · CPC title

• F21V17/08 Primary

  onto the supporting or suspending arrangements of the lighting device, e.g. power cords, standards · CPC title

• F21Y2103/10

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