Wide dispersion source multiple path light direction system

• US 10,473,842 B2
• Filed: 10/04/2018
• Issued: 11/12/2019
• Est. Priority Date: 10/04/2017
• Status: Active Grant

• Current Assignee: Q Technology Limited
• Original Assignee: Q Technology Limited
• Inventors: Douglas, David
• Primary Examiner(s): Bowman, Mary Ellen
• Application Number:
  US16/152,407
• Publication Number:
  US 20190101682A1
• Time in Patent Office: 404 Days
• CPC Class Codes: F21K 9/66 Details of globes or covers forming part of the light source
• CPC Class Codes: F21K 9/68 Details of reflectors forming part of the light source
• CPC Class Codes: F21S 4/28 rigid, e.g. LED bars
• CPC Class Codes: F21V 3/02 characterised by the shape
• CPC Class Codes: F21V 7/0016 on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
• CPC Class Codes: F21V 7/05 plane
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G02B 19/0019 having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors)
• CPC Class Codes: G02B 19/0066 in the form of an LED array
• CPC Class Codes: G02B 26/0816 by means of one or more reflecting elements
• CPC Class Codes: G02B 6/0018 Redirecting means on the surface of the light guide

Abstract

A lighting system uses optics to redirect stray light from unlensed LEDs toward a desired region while avoiding hot spots. The optics involve essentially planar surfaces with both reflective and light transmissive characteristics. The lighting system may be used in display cases.

Claims

1. A lighting module comprising:

a lighting module shell,

a substrate affixed to said shell,

lighting elements mounted on said substrate,

a first optical adapter with a substantially planar cross section,

a second optical adapter with a substantially planar cross section,

wherein the first optical adapter is affixed to said shell substantially parallel to said substrate, and

wherein the second optical adapter is affixed to said shell, off center and at an angle to said first optical adapter, said first optical adapter and said second optical adapter making a substantially L-shaped cross section.

2. A lighting module as in claim 1, further comprising:

a reflective substantially planar element placed on the side of said second optical adapter distal to said lighting elements.